38 results on '"Hongmiao Song"'
Search Results
2. Chilling injury of tomato fruit was alleviated under low-temperature storage by silencing Sly-miR171e with short tandem target mimic technology
- Author
-
Keyan Zhao, Rulong Chen, Wenhui Duan, Lanhuan Meng, Hongmiao Song, Qing Wang, Jiangkuo Li, and Xiangbin Xu
- Subjects
microRNA ,tomato fruit ,chilling injury ,GRAS ,GA ,Nutrition. Foods and food supply ,TX341-641 - Abstract
In this study, the role of Sly-miR171e on post-harvest cold tolerance of tomato fruit was researched. The results showed that overexpression of Sly-miR171e (miR171e-OE) promoted postharvest chilling injury (CI) of tomato fruit at the mature red (MR) and mature green (MG) stage. Contrasted with the wild type (WT) and miR171e-OE fruit, the knockdown of Sly-miR171e (miR171e-STTM) showed a lower CI index, lower hydrogen peroxide (H2O2) content, and higher fruit firmness after harvest. In the fruit of miR171e-STTM, the expression level of GRAS24, CBF1, GA2ox1, and COR, and the GA3 content were ascended, while the expression levels of GA20ox1 and GA3ox1 were descended. The research demonstrated that CI in tomato fruit was alleviated at low temperature storage by silencing Sly-miR171e with short tandem target mimic (STTM) technology. Furthermore, it also provided helpful information for genetic modification of miR171e and control of CI in the postharvest fruit.
- Published
- 2022
- Full Text
- View/download PDF
3. Knockdown of Sly-miR164a Enhanced Plant Salt Tolerance and Improved Preharvest and Postharvest Fruit Nutrition of Tomato
- Author
-
Xue Wan, Zhiqiang Wang, Wenhui Duan, Taishan Huang, Hongmiao Song, and Xiangbin Xu
- Subjects
tomato ,miR164a ,salt tolerance ,fruit nutrition ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Salinity stress is a serious limitation to tomato growth and development. The aim of this study was to investigate the effects of Sly-miR164a on tomato growth and fruit nutritional quality under salt stress. The results showed that the root length, fresh weight, plant height, stem diameter and ABA content of miR164a#STTM (knockdown of Sly-miR164a) lines were higher than those of WT and miR164a#OE (overexpression of Sly-miR164a) lines under salt stress. Compared with WT, miR164a#STTM tomato lines exhibited lower ROS accumulation under salt stress. In addition, the fruits of miR164a#STTM tomato lines had higher soluble solids, lycopene, ascorbic acid (ASA) and carotenoid content compared with WT. The study indicated that tomato plants were more sensitive to salt when Sly-miR164a was overexpressed, while knockdown of Sly-miR164a enhanced plant salt tolerance and improved fruit nutritional value.
- Published
- 2023
- Full Text
- View/download PDF
4. Deep sequencing identifies tissue-specific microRNAs and their target genes involving in the biosynthesis of tanshinones in Salvia miltiorrhiza.
- Author
-
Xiangbin Xu, Qinghua Jiang, Xiuyan Ma, Qicai Ying, Bo Shen, Yongsheng Qian, Hongmiao Song, and Huizhong Wang
- Subjects
Medicine ,Science - Abstract
Salvia miltiorrhiza is one of the most popular traditional medicinal herbs in Asian nations. Its dried root contains a number of tanshinones, protocatechuic aldehyde, salvianolic acid B and rosmarinic, and is used for the treatment of various diseases. The finding of microRNAs (miRNAs) and their target genes will help understand their biological role on the biosynthesis of tanshinones in S. miltiorrhiza. In the present study, a total of 452 known miRNAs corresponding to 589 precursor miRNAs (pre-miRNAs), and 40 novel miRNAs corresponding to 24 pre-miRNAs were identified in different tissues of S. miltiorrhiza by high-throughput sequencing, respectively. Among them, 62 miRNAs express only in root, 95 miRNAs express only in stem, 19 miRNAs express only in leaf, and 71 miRNAs express only in flower, respectively. By the degradome analysis, 69 targets potentially cleaved by 25 miRNAs were identified. Among them, acetyl-CoA C-acetyltransferase was cleaved by miR5072, and involved in the biosynthesis of tanshinones. This study provided valuable information for understanding the tissue-specific expression patterns of miRNAs in S. miltiorrhiza, and offered a foundation for future studies of the miRNA-mediated biosynthesis of tanshinones.
- Published
- 2014
- Full Text
- View/download PDF
5. High-throughput sequencing and degradome analysis identify miRNAs and their targets involved in fruit senescence of Fragaria ananassa.
- Author
-
Xiangbin Xu, Lili Yin, Qicai Ying, Hongmiao Song, Dawei Xue, Tongfei Lai, Maojun Xu, Bo Shen, Huizhong Wang, and Xuequn Shi
- Subjects
Medicine ,Science - Abstract
In non-climacteric fruits, the respiratory increase is absent and no phytohormone is appearing to be critical for their ripening process. They must remain on the parent plant to enable full ripening and be picked at or near the fully ripe stage to obtain the best eating quality. However, huge losses often occur for their quick post-harvest senescence. To understanding the complex mechanism of non-climacteric fruits post-harvest senescence, we constructed two small RNA libraries and one degradome from strawberry fruit stored at 20°C for 0 and 24 h. A total of 88 known and 1224 new candidate miRNAs, and 103 targets cleaved by 19 known miRNAs families and 55 new candidatemiRNAs were obtained. These targets were associated with development, metabolism, defense response, signaling transduction and transcriptional regulation. Among them, 14 targets, including NAC transcription factor, Auxin response factors (ARF) and Myb transcription factors, cleaved by 6 known miRNA families and 6 predicted candidates, were found to be involved in regulating fruit senescence. The present study provided valuable information for understanding the quick senescence of strawberry fruit, and offered a foundation for studying the miRNA-mediated senescence of non-climacteric fruits.
- Published
- 2013
- Full Text
- View/download PDF
6. Knockdown of Sly-miR160a using short tandem target mimic (STTM) enhanced expression of auxin signaling genes and delayed postharvest ripening of tomato fruit
- Author
-
Francine Ngaffo Mekontso, Shuhui Wu, Ruizuo Fu, Wen Li, Lanhuan Meng, Qing Wang, Jiangkuo Li, Hongmiao Song, and Xiangbin Xu
- Subjects
Horticulture ,Agronomy and Crop Science ,Food Science - Published
- 2023
7. Melatonin maintained higher contents of unsaturated fatty acid and cell membrane structure integrity in banana peel and alleviated postharvest chilling injury
- Author
-
Zhiqiang Wang, Lin Zhang, Wenhui Duan, Wen Li, Qing Wang, Jiangkuo Li, Hongmiao Song, and Xiangbin Xu
- Subjects
Food Storage ,Fruit ,Fatty Acids, Unsaturated ,Musa ,General Medicine ,Reactive Oxygen Species ,Cell Membrane Structures ,Antioxidants ,Food Science ,Analytical Chemistry ,Melatonin - Abstract
Exogenous melatonin confers the chilling tolerance of banana fruit by promoting reactive oxygen species (ROS) scavenging system and inducing the unsaturated fatty acid synthesis. The results showed that melatonin treatment increased the contents of phospholipids, promoted the ROS scavenging enzyme, and restrained the activities of lipoxygenase (LOX), and thus reduced the lipid peroxidation of banana peel. In addition, melatonin treatment increased the flavonoids and proline contents, which was conducive to antioxidant capacity. Interestingly, the enhanced antioxidant capacity is conducive to the stability of unsaturated fatty acids and reduce the enzymatic browning reaction. Moreover, melatonin treatment induced the expression of omega-3/6 fatty acid desaturase and triggered the fatty acid metabolism activity, by which maintained higher contents of unsaturated fatty acid in banana peel. Moreover, melatonin treatment stimulated the accumulation of fatty acids in banana peel, and was involved in alleviating fruit chilling injury.
- Published
- 2022
8. Overexpression of Sly-miR164a in tomato decreases expression of NAC and delays pre- and postharvest ripening of fruit
- Author
-
Zhiqiang Wang, Qing Wang, Wenhui Duan, Lanhuan Meng, Jiangkuo Li, Hongmiao Song, and Xiangbin Xu
- Subjects
Horticulture ,Agronomy and Crop Science ,Food Science - Published
- 2023
9. 1‐Methylcyclopropene suppressed the growth of Penicillium digitatum and inhibited the green mould in citrus fruit
- Author
-
Guofeng Yuan, Shuangshuang Shan, Zhiqiang Wang, Hongmiao Song, Huili Pu, Xiangbin Xu, and Zhengke Zhang
- Subjects
chemistry.chemical_compound ,Penicillium digitatum ,Horticulture ,Ethylene ,chemistry ,Physiology ,Genetics ,Plant Science ,Biology ,1-Methylcyclopropene ,biology.organism_classification ,Agronomy and Crop Science ,Citrus fruit - Published
- 2020
10. DNA Methylation Changes Were Involved in Inhibiting Ethylene Signaling and Delaying Senescence of Tomato Fruit Under Low Temperature
- Author
-
Wenhui Duan, Shiyin Xie, and Hongmiao Song
- Abstract
Objectives To comprehend the epigenetic mechanism of low temperature in delaying senescence of fruit, the changes of DNA methylation patterns of genes related to ethylene biosynthesis and signaling were analyzed in tomato fruit. Results In the present results, the expression level of LeEIN3, SlERF-A1 and LeERT10 decreased, and the expression level of LeCTR1 increased in tomato fruit stored at the low temperature of 11 oC. Meanwhile, the DNA methylation level of CpG island of LeEIN3, SlERF-A1 and LeERT10 increased, and the DNA methylation level of CpG island of LeCTR1 decreased in tomato fruit, respectively. The low temperature suppressed ethylene signaling via changing DNA methylation and gene expression, and delayed senescence of tomato fruit. Conclusions The present study offered valuable information for understanding the role of DNA methylation in senescence of fruit, and provided a foundation for genetic modifying the epigenetic target sites and controlling fruit senescence.
- Published
- 2021
11. Knockdown of Sly-miR164a by short tandem target mimic (STTM) enhanced postharvest chilling tolerance of tomato fruit under low temperature storage
- Author
-
Keyan Zhao, Hongmiao Song, Zhiqiang Wang, Zengting Xing, Jixin Tian, Qing Wang, Lanhuan Meng, and Xiangbin Xu
- Subjects
Horticulture ,Agronomy and Crop Science ,Food Science - Published
- 2022
12. Author response for '1‐Methylcyclopropene suppressed the growth of Penicillium digitatum and inhibited the green mould in citrus fruit'
- Author
-
Hongmiao Song, Huili Pu, Zhengke Zhang, Shuangshuang Shan, Zhiqiang Wang, Xiangbin Xu, and Guofeng Yuan
- Subjects
Penicillium digitatum ,Horticulture ,chemistry.chemical_compound ,biology ,Chemistry ,biology.organism_classification ,1-Methylcyclopropene ,Citrus fruit - Published
- 2020
13. Dynamic Changes of DNA Methylation Induced by Heat Treatment Were Involved in Ethylene Signal Transmission and Delayed the Postharvest Ripening of Tomato Fruit
- Author
-
Shuangshuang Shan, Xiangbin Xu, Zhiqiang Wang, Huili Pu, Jixin Tian, Jiangkuo Li, Lin Zhang, Wenhui Duan, and Hongmiao Song
- Subjects
0106 biological sciences ,Methyltransferase ,Ethylene ,Hot Temperature ,01 natural sciences ,chemistry.chemical_compound ,Solanum lycopersicum ,Plant Growth Regulators ,Gene Expression Regulation, Plant ,Plant Proteins ,biology ,010401 analytical chemistry ,food and beverages ,Ripening ,General Chemistry ,Methylation ,DNA Methylation ,Ethylenes ,0104 chemical sciences ,Horticulture ,chemistry ,Fruit ,DNA methylation ,Postharvest ,biology.protein ,Demethylase ,General Agricultural and Biological Sciences ,DNA ,010606 plant biology & botany - Abstract
Deoxyribonucleic acid (DNA) methylation plays an important role in fruit ripening and senescence. Here, the role of DNA methylation of the CpG island of SlACS10, LeCTR1, LeEIN3, LeERT10, and SlERF-A1 genes induced by heat treatment (37 °C) in postharvest ripening of tomato fruit was studied. After heat treatment, the firmness and vitamin C content showed higher levels, the loss of aldehydes in volatile components was delayed, and the activities of methylase and demethylase decreased in tomato fruit. Moreover, in heat-treated fruit, significant changes in DNA methylation of SlACS10, LeCTR1, LeEIN3, LeERT10, and SlERF-A1 were induced, the expression of LeERT10 and LeEIN3 was inhibited, the expression of SlERF-A1 was increased, by which ethylene signal transmission might be suppressed and the postharvest ripening of tomato fruit was delayed. The present study provided valuable information for understanding the essential role of DNA methylation in the postharvest ripening of tomato fruit.
- Published
- 2020
14. Melatonin enhanced chilling tolerance and alleviated peel browning of banana fruit under low temperature storage
- Author
-
Shuangshuang Shan, Huili Pu, Jiangkuo Li, Xiangbin Xu, Zhiqiang Wang, Hongmiao Song, and Zhang Peng
- Subjects
chemistry.chemical_classification ,endocrine system ,Reactive oxygen species ,Chemistry ,food and beverages ,Melatonin treatment ,Horticulture ,Melatonin ,Enzyme ,Polyphenol ,medicine ,Browning ,Food science ,Chilling injury ,Agronomy and Crop Science ,Unsaturated fatty acid ,Food Science ,medicine.drug - Abstract
The effect of melatonin on chilling injury of banana fruit was investigated. Results showed that melatonin treatment delayed chilling injury and alleviated peel browning. Melatonin treatment increased the contents of phospholipids and unsaturated fatty acid, induced the reactive oxygen species (ROS) scavenging enzyme activities, and reduced the contents of H2O2, O2– of banana fruit. It also induced the miR528 expression, resulting in the down expression of the potential target genes of MaPPO1, MaPPO2 and MaPPO3, and inhibited the PPO activities. Moreover, the phenolic compounds in melatonin treated banana fruit peel were quantitatively analyzed by liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The results indicated that melatonin treatment changed the contents of 63 polyphenolics in banana fruit, and by which involved in delaying chilling injury and alleviating peel browning. In conclusion, melatonin treatment is a potential technique in alleviating chilling injury of banana fruit under low temperature storage.
- Published
- 2021
15. MiR164 is involved in delaying senescence of strawberry (Fragaria ananassa) fruit by negatively regulating NAC transcription factor genes under low temperature
- Author
-
Hongmiao Song, Xiangbin Xu, Tongfei Lai, and Jiangkuo Li
- Subjects
0106 biological sciences ,0301 basic medicine ,Senescence ,Plant physiology ,Plant Science ,Biology ,Fragaria ,01 natural sciences ,Cell biology ,03 medical and health sciences ,030104 developmental biology ,Biochemistry ,Transcription (biology) ,Transcriptional regulation ,Transcription Factor Gene ,Gene ,Transcription factor ,010606 plant biology & botany - Abstract
The miRNAs and their targets involved in senescence of strawberry fruit (Fragaria ananassa L. cv. Zhangji) were analyzed in the present study. In the previous work, three members of miR164 family, mdmmiR164d_ 1ss21AC, mdm-miR164e and mdm-miR164f_1ss21TA, and three of their targets, NAC domain transcriptional regulator superfamily protein, NAC domain containing protein 38 and NAC domain containing protein 87 had been identified by high-throughput sequencing and degradome analysis. In the process of fruit senescence from 0 to 48 h at 4°C storage, the relative levels of mdm-miR164e and mdmmiR164d_1ss21AC expression were significantly increased resulting in decreased expression of NAC genes, and delayed senescence of strawberry fruits. These results suggested that miR164 was involved in strawberry fruit senescence by negatively mediating the expression of NAC transcription factors.
- Published
- 2017
16. 1-methylcyclopropene (1-MCP) suppressed postharvest blue mold of apple fruit by inhibiting the growth of Penicillium expansum
- Author
-
Huanhuan Lei, Hongmiao Song, Jiangkuo Li, Tongfei Lai, Xuequn Shi, and Xiangbin Xu
- Subjects
0106 biological sciences ,biology ,Chemistry ,fungi ,Blue mold ,food and beverages ,04 agricultural and veterinary sciences ,Horticulture ,biology.organism_classification ,1-Methylcyclopropene ,01 natural sciences ,040501 horticulture ,Spore ,Microbiology ,chemistry.chemical_compound ,Germination ,Postharvest ,Spore germination ,Penicillium expansum ,0405 other agricultural sciences ,Agronomy and Crop Science ,Mycelium ,010606 plant biology & botany ,Food Science - Abstract
The effect of 1-methylcyclopropene (1-MCP) on inhibiting postharvest blue mold of apple fruit caused by Penicillium expansum and suppressing the growth of P. expansum in vitro was investigated. The treatment of 5 μL L −1 1-MCP significantly decreased disease severity of apple fruit caused by P. expansum and suppressed the mycelial growth and spore germination of P. expansum . After treatment with 1-MCP, lower integrity of plasma membrane in the spores of P. expansum was detected, higher levels of reactive oxygen species (ROS) in the spores and malondialdehyde (MDA) in the mycelium was observed, indicating that 1-MCP treatment enhanced oxidative damage to P. expansum and destroyed the integrity of plasma membrane of spores. This study for the first time demonstrated that 1-MCP suppressed postharvest blue mold of apple fruit by inhibiting the growth of P. expansum .
- Published
- 2017
17. Antifungal activity of 1-methylcyclopropene (1-MCP) against anthracnose ( Colletotrichum gloeosporioides ) in postharvest mango fruit and its possible mechanisms of action
- Author
-
Xiangbin Xu, Xiuyan Ma, Jiangkuo Li, Hongmiao Song, Xuequn Shi, Huanhuan Lei, and Tongfei Lai
- Subjects
Cyclopropanes ,0106 biological sciences ,Antifungal ,Antifungal Agents ,medicine.drug_class ,Biology ,1-Methylcyclopropene ,01 natural sciences ,Microbiology ,040501 horticulture ,chemistry.chemical_compound ,Colletotrichum gloeosporioides ,Botany ,Colletotrichum ,medicine ,Spore germination ,Mango fruit ,Mycelium ,Plant Diseases ,Mangifera ,Cell Membrane ,fungi ,04 agricultural and veterinary sciences ,General Medicine ,Mitochondria ,Spore ,chemistry ,Fruit ,Food Microbiology ,Postharvest ,Reactive Oxygen Species ,0405 other agricultural sciences ,010606 plant biology & botany ,Food Science - Abstract
Anthracnose caused by Colletotrichum gloeosporioides is one of the most important postharvest diseases in mango fruit, often causing huge economic losses. In this study, the effect of 1-methylcyclopropene (1-MCP) against anthracnose in postharvest mango fruit and the mechanisms involved were investigated. 1-MCP induced reactive oxygen species (ROS) generation, damaged the mitochondria and destroyed the integrity of plasma membrane of spores of C. gloeosporioides, significantly suppressing spore germination and mycelial growth of C. gloeosporioides. 1-MCP also decreased the decay incidence and lesion expansion of mango fruit caused by C. gloeosporioides. For the first time this study demonstrated that 1-MCP suppressed anthracnose of postharvest mango fruit by directly inhibiting spore germination and mycelial growth of C. gloeosporioides, thus providing a promising strategy for disease control.
- Published
- 2017
18. MicroRNAs play an important role in the regulation of strawberry fruit senescence in low temperature
- Author
-
Hongmiao Song, Xiuyan Ma, Huanhuan Lei, Xuequn Shi, Xiangbin Xu, and Lili Yin
- Subjects
chemistry.chemical_classification ,Senescence ,Small RNA ,Jasmonic acid ,food and beverages ,Horticulture ,Biology ,chemistry.chemical_compound ,chemistry ,Biochemistry ,Auxin ,Transcription (biology) ,Postharvest ,Agronomy and Crop Science ,Abscisic acid ,Transcription factor ,Food Science - Abstract
To understand the microRNAs (miRNAs)-mediated mechanism of low temperature delaying non-climacteric strawberry fruit senescence during postharvest period, two small RNA (sRNA) libraries from strawberry fruit stored at low temperature for 24 and 48 h were constructed. A total of 88 known and 1224 novel potential candidate miRNAs were obtained and analyzed. Compared with the expression of miRNAs in strawberry fruit stored for 0 h, 108 miRNAs were up-regulated and 113 were down-regulated in fruit stored at 24 h, and 139 miRNAs were up-regulated and 114 were down-regulated in fruit stored at 48 h. In the process of fruit storage under low temperature, PC-5p-176409_20 repressed abscisic acid (ABA) signaling transduction via the PYR1/PYL1-PP2C-SnRK2 network, miR167 reduced the jasmonic acid (JA) biosynthesis by targeting auxin response factor 8(ARF8), and by which they were involved in delaying fruit senescence. MiR164, miR172, PC-5p-67794_53 and PC-5p-1004_3092 up- or down-regulated the expression of their target genes, NAC transcription factors, APETALA2.7 (AP2.7) transcription factor, alpha/beta-hydrolases superfamily protein and glycosyl hydrolase 9B1, respectively, and also involved in delaying fruit senescence under low temperature. These results give valuable information for understanding the role of miRNA in mediating the fruit senescence at low temperature.
- Published
- 2015
19. Overexpression of DnWRKY29 in tobacco impaired plants tolerance to salt and drought stresses
- Author
-
C. Wang, Y. Pan, Huizhong Wang, Xiuyan Ma, Qicai Ying, Xiangbin Xu, and Hongmiao Song
- Subjects
biology ,Transgene ,food and beverages ,Plant physiology ,Plant Science ,biology.organism_classification ,Malondialdehyde ,Dendrobium ,Superoxide dismutase ,chemistry.chemical_compound ,chemistry ,Catalase ,Seedling ,Germination ,Botany ,biology.protein - Abstract
One novel transcription factor gene DnWRKY29 was isolated from Dendrobium officinale, and its functions were identified by its overexpression in tobacco. Compared to the wild type (WT), the DnWRKY29 transgenic tobacco seeds and seedlings showed more sensitivity to salt and drought stresses. The seed germination rate, seedling root length, and fresh weight of transgenic tobacco were lower than in WT. The activities of peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) in transgenic tobacco were decreased, and the content of malondialdehyde (MDA) in transgenic tobacco was increased. Moreover, the expression of DnWRKY29 was up-regulated in Dendrobium seedlings under salt and drought stresses, which was consistent with the function identified by its overexpression in tobacco, indicating that the up-regulation or overexpression of DnWRKY29 impaired plant tolerance to salt and drought stresses. These results provided a new insight to the low tolerance of Dendrobium seedlings to environmental change.
- Published
- 2015
20. Overexpression of DnWRKY11 enhanced salt and drought stress tolerance of transgenic tobacco
- Author
-
Chun-Ling Wang, Qicai Ying, Xiangbin Xu, Huizhong Wang, Yuan-Yuan Pan, and Hongmiao Song
- Subjects
biology ,Abiotic stress ,Wild type ,Cell Biology ,Plant Science ,biology.organism_classification ,Biochemistry ,Dendrobium nobile ,WRKY protein domain ,Dendrobium ,Superoxide dismutase ,Catalase ,Germination ,Botany ,Genetics ,biology.protein ,Animal Science and Zoology ,Molecular Biology ,Ecology, Evolution, Behavior and Systematics - Abstract
Dendrobium seedlings showed low survival rate when they were transferred from in vitro conditions to greenhouse or field environment. One of the major reasons is their low tolerance to environmental changes. WRKY transcription factors are one of the largest families of transcriptional regulators in plants. They are involved in various biotic and abiotic stress responses. One DnWRKY11 gene was isolated from Dendrobium nobile. To explore the function of DnWRKY11 in Dendrobium defense responses to abiotic stress, it was overexpressed in tobacco. Under salt and drought stresses, the DnWRKY11 transgenic tobacco showed higher germination rate, longer root length, higher fresh weight, higher activities of catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), and lower content of malonidialdehyde (MDA) than the wild type. These results proved the important roles of DnWRKY11 in plant response to drought and salt stresses, and provided a potential gene for improving environmental stress tolerance of Dendrobium seedlings.
- Published
- 2014
21. Dynamic Changes of DNA Methylation Induced by Heat Treatment Were Involved in Ethylene Signal Transmission and Delayed the Postharvest Ripening of Tomato Fruit.
- Author
-
Huili Pu, Shuangshuang Shan, Zhiqiang Wang, Wenhui Duan, Jixin Tian, Lin Zhang, Jiangkuo Li, Hongmiao Song, and Xiangbin Xu
- Published
- 2020
- Full Text
- View/download PDF
22. Protein carbonylation in barley seedling roots caused by aluminum and proton toxicity is suppressed by salicylic acid
- Author
-
Y. Tao, Xiangbin Xu, Huizhong Wang, and Hongmiao Song
- Subjects
Antioxidant ,medicine.medical_treatment ,Protein Carbonylation ,Plant physiology ,Plant Science ,Biology ,biology.organism_classification ,medicine.disease ,chemistry.chemical_compound ,Horticulture ,Biochemistry ,chemistry ,Seedling ,Toxicity ,medicine ,Hordeum vulgare ,Cell damage ,Salicylic acid - Abstract
Proton (H+) and aluminum (Al3+) toxicities are major factors limiting crop production on acid soils. To study whether salicylic acid (SA) is functional in alleviating protein damage caused by H+ and Al3+ toxicities, an investigation of the antioxidant defense response regulated by SA was carried out on barley (Hordeum vulgare L.) seedlings under H+, Al3+, and combined stresses. It was found that the relative root elongation of seedlings, which grew in the solutions supplemented with SA, was significantly higher than that of seedlings without SA treatment after 24-h treatments with H+, Al3+, and combined stresses. The lesser amount of carbonylated proteins with molecular weights ranging from 14.4 to 97 kD, was accumulated in seedlings treated with SA than that in the seedlings without SA treatment. The higher activities of antioxidant enzymes and lesser content of MDA were observed in seedlings treated with SA compared with the seedlings without SA treatment. Moreover, the nitroblue tetrazolium staining of roots showed that ROS accumulation was decreased by SA treatments. This study suggested that SA could alleviate cell damage caused by H+ and Al3+ toxicities on acid soils by both activating antioxidant defense responses and reducing the contents of carbonylated proteins caused by ROS in barley seedlings.
- Published
- 2011
23. Expression of five AtHsp90 genes in Saccharomyces cerevisiae reveals functional differences of AtHsp90s under abiotic stresses
- Author
-
Rongmin Zhao, Hongmiao Song, Yinxin Li, Pengxiang Fan, and Wuliang Shi
- Subjects
Genetics ,Arabidopsis Proteins ,Physiology ,Endoplasmic reticulum ,Mutant ,Saccharomyces cerevisiae ,Plant Science ,Biology ,biology.organism_classification ,Hsp90 ,Yeast ,Cell biology ,Two-Hybrid System Techniques ,Chaperone (protein) ,Heat shock protein ,biology.protein ,HSP70 Heat-Shock Proteins ,HSP90 Heat-Shock Proteins ,Agronomy and Crop Science ,Gene ,Protein Binding - Abstract
The genome of Arabidopsis thaliana contains seven Hsp90 family genes. Three organellar and two cytosolic AtHsp90 isoforms were characterized by functionally expressing them in a temperature-sensitive Hsp90 mutant and a conditional Hsp90-null mutant of Saccharomyces cerevisiae. The cytosolic AtHsp90-1 and AtHsp90-2 showed function similar to that of yeast in chaperoning roles; they could support the growth of yeast mutants at both permissive and non-permissive temperature. Neither the full-length nor mature forms of chloroplast-located AtHsp90-5, mitochondria-located AtHsp90-6 and endoplasmic reticulum (ER)-located AtHsp90-7 could complement the yeast Hsp90 proteins. The cytosolic AtHsp90s could stabilize the biomembrane of the temperature-sensitive Hsp90 mutant strains under stress conditions, while the organellar AtHsp90s could not protect the biomembrane of the temperature-sensitive Hsp90 mutant strains. Yeast two-hybrid results showed that either pre-protein or mature forms of organellar AtHsp90s could interact with cofactors cpHsp70, Hsp70, Hsp70t-2, Cyp40, p23 and a substrate protein of NOS, while cytosolic AtHsp90s could not interact with them. These results suggest that organellar and cytosolic AtHsp90s possibly work through different molecular mechanisms in forming chaperone complexes and performing their functional roles.
- Published
- 2010
24. Exogenous γ-aminobutyric acid alleviates oxidative damage caused by aluminium and proton stresses on barley seedlings
- Author
-
Huizhong Wang, Hongmiao Song, Xiangbin Xu, Hua Wang, and Yuezhi Tao
- Subjects
Time Factors ,Antioxidant ,medicine.medical_treatment ,medicine.disease_cause ,Plant Roots ,Aminobutyric acid ,Antioxidants ,gamma-Aminobutyric acid ,Protein Carbonylation ,chemistry.chemical_compound ,Malondialdehyde ,medicine ,gamma-Aminobutyric Acid ,chemistry.chemical_classification ,Reactive oxygen species ,Nutrition and Dietetics ,biology ,Superoxide Dismutase ,Nitroblue Tetrazolium ,food and beverages ,Hordeum ,Catalase ,Enzyme assay ,Oxidative Stress ,Peroxidases ,chemistry ,Biochemistry ,Seedlings ,biology.protein ,Hordeum vulgare ,Protons ,Reactive Oxygen Species ,Agronomy and Crop Science ,Oxidative stress ,Aluminum ,Food Science ,Biotechnology ,medicine.drug - Abstract
BACKGROUND: Proton (H+) and aluminium (Al3+) toxicities are major factors limiting crop production on acid soils, while γ-aminobutyric acid (GABA) is a non-protein amino acid involved in various stress tolerances in plants. In this study, to determine whether exogenous GABA is functional in alleviating oxidative stress induced by H+ and Al3+ toxicities, the antioxidant defence response regulated by GABA was investigated in barley (Hordeum vulgare L.). RESULTS: After 24 h treatments of seedlings under H+, Al3+ and combined stresses with and without GABA, morphological and biochemical assays were conducted. It was observed that the inhibition of seedling root elongation caused by Al3+ and H+ toxicities was significantly mitigated by GABA. The amount of carbonylated proteins with molecular masses of 14.4–97 kDa was decreased. The activities of antioxidant enzymes were enhanced, the content of malondialdehyde was reduced and the accumulation of reactive oxygen species (ROS), as shown by staining roots with nitroblue tetrazolium, declined in GABA-treated seedlings. CONCLUSION: GABA can alleviate oxidative damage caused by H+ and Al3+ toxicities in barley seedlings by activating antioxidant defence responses and reducing the elevated levels of carbonylated proteins caused by ROS. Copyright © 2010 Society of Chemical Industry
- Published
- 2010
25. Flower-specific expression of Arabidopsis PCS1 driven by AGAMOUS second intron in tobacco decreases the fertility of transgenic plants
- Author
-
Yuezhi Tao, Hongmiao Song, Xiangbin Xu, Songbai Liu, Nongnong Shi, Huizhong Wang, and Jufang Bian
- Subjects
Genetics ,biology ,Agamous ,Sterility ,Transgene ,Stamen ,Plant Science ,Genetically modified crops ,biology.organism_classification ,Arabidopsis ,Arabidopsis thaliana ,Agronomy and Crop Science ,Molecular Biology ,Gene ,Biotechnology - Abstract
The PROMOTION OF CELL SURVIVAL 1 (PCS1) gene, encoding an aspartic protease, has an important role in determining the fate of cells in embryonic development and reproduction processes in Arabidopsis. To explore the potential function of the PCS1 gene in generating reproductive sterility, we placed the PCS1 gene under the control of an 1,869-bp nucleotide sequence from the 3′ end of the second intron (AG-I) of Arabidopsis AGAMOUS and CaMV 35S (–60) minimal promoter [AG-I-35S (–60)::PCS1], and introduced it into tobacco. RT–PCR results demonstrated that the PCS1 gene driven by AG-I-35S (–60) chimeric promoter was expressed only in anthers and carpels in the reproductive tissues of transgenic tobacco. Compared to wild-type plants, all AG-I-35S (–60) and AG-I-35S (–60)::PCS1 transgenic lines showed a normal phenotype throughout the vegetative growth phase. However, during the reproductive stage, most AG-I-35S (–60)::PCS1 transgenic plant anthers displayed delayed dehiscence, failed dehiscence, petalody and hypoplasia, and the pollen grains had different shapes and sizes with a distorted, shrunken, or collapsed morphology. Moreover, three transgenic lines, PCS1-1, PCS1-3 and PCS1-4, showed higher sterility than wild-type and AG-I-35S (–60) transgenic plants, respectively. These results showed that the construct of AG-I-35S (–60)::PCS1 was partially effective at preventing seed set and provided a novel sterility strategy.
- Published
- 2010
26. Overexpression of Organellar and Cytosolic AtHSP90 in Arabidopsis thaliana Impairs Plant Tolerance to Oxidative Stress
- Author
-
Yinxin Li, Pengxiang Fan, and Hongmiao Song
- Subjects
biology ,Endoplasmic reticulum ,Plant Science ,biology.organism_classification ,medicine.disease_cause ,Malondialdehyde ,Superoxide dismutase ,chemistry.chemical_compound ,Biochemistry ,chemistry ,Catalase ,Arabidopsis ,biology.protein ,medicine ,Arabidopsis thaliana ,Molecular Biology ,Cellular compartment ,Oxidative stress - Abstract
Three AtHSP90 isoforms, cytosol-localized AtHSP90.2, chloroplast-localized AtHSP90.5, and endoplasmic reticulum (ER)-localized AtHSP90.7 genes, were constitutively overexpressed in Arabidopsis thaliana to study their functional mechanisms under oxidative stress. Overexpression of AtHSP90 genes reduced germination of transgenic seeds under oxidative stress. When exposed to 10 mM H2O2, AtHSP90 transgenic seedlings displayed lower activities of superoxide dismutase, catalase, and peroxidase; higher content of malondialdehyde; and higher levels of protein damage than detected in the wild type. This indicated that overexpression of AtHSP90.2, AtHSP90.5, and AtHSP90.7 in Arabidopsis impaired plant tolerance to oxidative stress. Moreover, overexpression of chloroplast- and ER-localized AtHSP90 resulted in lower resistance to oxidative stress than that of cytosolic AtHSP90. This suggested that HSP90.2, HSP90.5, and HSP90.7 localized in different cellular compartments were involved in different functional mechanisms during oxidative stress.
- Published
- 2009
27. Overexpression of AtHsp90.2, AtHsp90.5 and AtHsp90.7 in Arabidopsis thaliana enhances plant sensitivity to salt and drought stresses
- Author
-
Xuchu Wang, Rongmin Zhao, Hongmiao Song, Xianyang Chen, Yinxin Li, and Pengxiang Fan
- Subjects
Immunoblotting ,Arabidopsis ,Plant Science ,Sodium Chloride ,Calcium Chloride ,Gene Expression Regulation, Plant ,Heat shock protein ,Cellular stress response ,Botany ,Gene expression ,Genetics ,Protein Isoforms ,Arabidopsis thaliana ,Mannitol ,HSP90 Heat-Shock Proteins ,biology ,Arabidopsis Proteins ,Reverse Transcriptase Polymerase Chain Reaction ,Endoplasmic reticulum ,fungi ,Wild type ,food and beverages ,Salt Tolerance ,Blotting, Northern ,Plants, Genetically Modified ,biology.organism_classification ,Hsp90 ,Droughts ,Cell biology ,biology.protein ,Electrophoresis, Polyacrylamide Gel - Abstract
Three AtHsp90 isoforms, cytosolic AtHsp90.2, chloroplast-located AtHsp90.5, and endoplasmic reticulum (ER)-located AtHsp90.7, were characterized by constitutive overexpressing their genes in Arabidopsis thaliana. Both types of the transgenic plants overexpressing cytosolic and organellar AtHsp90s showed reduced tolerance to salt and drought stresses with lower germination rates and fresh weights, but improved tolerance to high concentration of Ca(2+) comparing with the wild type plants. Transcriptional analysis of ABA-responsive genes, RD29A, RD22 and KIN2 under salt and drought stresses, indicated that the induction expression of these genes was delayed by constitutive overexpression of cytosolic AtHsp90.2, but was hardly affected by that of organellar AtHsp90.5 and AtHsp90.7. These results implied that Arabidopsis different cellular compartments-located Hsp90s in Arabidopsis might be involved in abiotic stresses by different functional mechanisms, probably through ABA-dependent or Ca(2+) pathways, and proper homeostasis of Hsp90 was critical for cellular stress response and/or tolerance in plants.
- Published
- 2009
28. Proteomic analysis reveals the mechanisms of Mycena dendrobii promoting transplantation survival and growth of tissue culture seedlings of Dendrobium officinale
- Author
-
Xiangbin Xu, Xiuyan Ma, Qicai Ying, Hongmiao Song, H.H. Lei, Maojun Xu, Huizhong Wang, and Songbai Liu
- Subjects
Proteomics ,biology ,General Medicine ,biology.organism_classification ,Applied Microbiology and Biotechnology ,Plant Roots ,Dendrobium ,Transplantation ,Dendrobium officinale ,Tissue culture ,Seedling ,Seedlings ,Botany ,Medicinal herbs ,Mycena dendrobii ,Mycorrhiza ,Agaricales ,Biotechnology ,Plant Proteins - Abstract
Aims Dendrobium officinale is an important traditional Chinese medicinal herb. Its seedlings generally show low survival and growth when transferred from in vitro tissue culture to a greenhouse or field environment. In this study, the effect of Mycena dendrobii on the survival and growth of D. officinale tissue culture seedlings and the mechanisms involved was explored. Methods and results Mycena dendrobii were applied underneath the roots of D. officinale tissue culture seedlings. The seedling survival and growth were analysed. The root proteins induced by M. dendrobii were identified using two-dimensional (2-D) electrophoresis and matrix-assisted laser desorption/ionization time-of-flight MS (MALDI-TOF-MS). Mycena dendrobii treatment significantly enhanced survival and growth of D. officinale seedlings. Forty-one proteins induced by M. dendrobii were identified. Among them, 10 were involved in defence and stress response, two were involved in the formation of root or mycorrhizae, and three were related to the biosynthesis of bioactive constituents. Conclusions These results suggest that enhancing stress tolerance and promoting new root formation induced by M. dendrobii may improve the survival and growth of D. officinale tissue culture seedlings. Significance and impact of the study This study provides a foundation for future use of M. dendrobii in the large-scale cultivation of Dendrobiums.
- Published
- 2014
29. Deep Sequencing Identifies Tissue-Specific MicroRNAs and Their Target Genes Involving in the Biosynthesis of Tanshinones in Salvia miltiorrhiza
- Author
-
Xiuyan Ma, Qicai Ying, Bo Shen, Hongmiao Song, Huizhong Wang, Qinghua Jiang, Yongsheng Qian, and Xiangbin Xu
- Subjects
Agricultural Biotechnology ,lcsh:Medicine ,Datasets as Topic ,Salvia miltiorrhiza ,Computational biology ,Biology ,Deep sequencing ,chemistry.chemical_compound ,Biosynthesis ,Gene Expression Regulation, Plant ,Plant Products ,microRNA ,Genetics ,Tissue specific ,Cluster Analysis ,RNA, Messenger ,lcsh:Science ,Gene ,Gene Library ,Multidisciplinary ,Gene Expression Profiling ,lcsh:R ,Biology and Life Sciences ,Computational Biology ,High-Throughput Nucleotide Sequencing ,Agriculture ,Molecular biology ,Agronomy ,MicroRNAs ,chemistry ,Organ Specificity ,Abietanes ,Protocatechuic aldehyde ,lcsh:Q ,RNA Interference ,RNA extraction ,Research Article ,Biotechnology - Abstract
Salvia miltiorrhiza is one of the most popular traditional medicinal herbs in Asian nations. Its dried root contains a number of tanshinones, protocatechuic aldehyde, salvianolic acid B and rosmarinic, and is used for the treatment of various diseases. The finding of microRNAs (miRNAs) and their target genes will help understand their biological role on the biosynthesis of tanshinones in S. miltiorrhiza. In the present study, a total of 452 known miRNAs corresponding to 589 precursor miRNAs (pre-miRNAs), and 40 novel miRNAs corresponding to 24 pre-miRNAs were identified in different tissues of S. miltiorrhiza by high-throughput sequencing, respectively. Among them, 62 miRNAs express only in root, 95 miRNAs express only in stem, 19 miRNAs express only in leaf, and 71 miRNAs express only in flower, respectively. By the degradome analysis, 69 targets potentially cleaved by 25 miRNAs were identified. Among them, acetyl-CoA C-acetyltransferase was cleaved by miR5072, and involved in the biosynthesis of tanshinones. This study provided valuable information for understanding the tissue-specific expression patterns of miRNAs in S. miltiorrhiza, and offered a foundation for future studies of the miRNA-mediated biosynthesis of tanshinones.
- Published
- 2014
30. Overexpression of AtHsp90.3 in Arabidopsis thaliana impairs plant tolerance to heavy metal stress
- Author
-
Huizhong Wang, Hongmiao Song, and Xiangbin Xu
- Subjects
biology ,Saccharomyces cerevisiae ,Plant Science ,Glutathione ,Horticulture ,biology.organism_classification ,Hsp90 ,Superoxide dismutase ,chemistry.chemical_compound ,Biochemistry ,chemistry ,Catalase ,Arabidopsis ,Heat shock protein ,biology.protein ,Arabidopsis thaliana - Abstract
The functions of cytosolic heat shock protein AtHsp90.3 in response to heavy metal stress were characterized by using expression of AtHsp90.3 gene in yeast and Arabidopsis thaliana. AtHsp90.3 supported the Saccharomyces cerevisiae Hsp90 knockout strain R0005 growth and maintaining cells membrane integrity under cadmium and arsenic stresses, which was compatible with the components of ScHsc82 machinery. However, constitutive overexpression of AtHsp90.3 in Arabidopsis impaired plant tolerance to Cd stress with lower germination rate and shorter root length, decreased contents of phytochelatins (PCs) and glutathione (GSH), inhibited activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD), and increased content of malondialdehyde (MDA). These results suggested that proper homeostasis of Hsp90 was critical for cellular response and/or tolerance to heavy metal stress in plants.
- Published
- 2012
31. High-throughput sequencing and degradome analysis identify miRNAs and their targets involved in fruit senescence of Fragaria ananassa
- Author
-
Qicai Ying, Dawei Xue, Hongmiao Song, Xuequn Shi, Lili Yin, Huizhong Wang, Bo Shen, Tongfei Lai, Xiangbin Xu, and Maojun Xu
- Subjects
Senescence ,Small RNA ,Time Factors ,Transcription, Genetic ,lcsh:Medicine ,Crops ,Biology ,Real-Time Polymerase Chain Reaction ,Fragaria ,Fruits ,Molecular Genetics ,RNA interference ,Auxin ,Gene Expression Regulation, Plant ,Genome Analysis Tools ,Vegetables ,Transcriptional regulation ,Genetics ,MYB ,Gene Regulation ,Genome Sequencing ,lcsh:Science ,Transcription factor ,Gene Library ,chemistry.chemical_classification ,Multidisciplinary ,lcsh:R ,Temperature ,food and beverages ,High-Throughput Nucleotide Sequencing ,Computational Biology ,Ripening ,Agriculture ,Genomics ,MicroRNAs ,chemistry ,RNA, Plant ,Fruit ,lcsh:Q ,Gene expression ,Sequence Analysis ,Genome, Plant ,Signal Transduction ,Transcription Factors ,Research Article - Abstract
In non-climacteric fruits, the respiratory increase is absent and no phytohormone is appearing to be critical for their ripening process. They must remain on the parent plant to enable full ripening and be picked at or near the fully ripe stage to obtain the best eating quality. However, huge losses often occur for their quick post-harvest senescence. To understanding the complex mechanism of non-climacteric fruits post-harvest senescence, we constructed two small RNA libraries and one degradome from strawberry fruit stored at 20°C for 0 and 24 h. A total of 88 known and 1224 new candidate miRNAs, and 103 targets cleaved by 19 known miRNAs families and 55 new candidatemiRNAs were obtained. These targets were associated with development, metabolism, defense response, signaling transduction and transcriptional regulation. Among them, 14 targets, including NAC transcription factor, Auxin response factors (ARF) and Myb transcription factors, cleaved by 6 known miRNA families and 6 predicted candidates, were found to be involved in regulating fruit senescence. The present study provided valuable information for understanding the quick senescence of strawberry fruit, and offered a foundation for studying the miRNA-mediated senescence of non-climacteric fruits.
- Published
- 2013
32. Seed size is determined by the combinations of the genes controlling different seed characteristics in rice
- Author
-
Changjie Yan, Hongmiao Song, Heqin Liu, Sujuan Li, Peng Guo, Guowei Zhai, Hua Wang, Song Yan, Guihua Zou, and Yuezhi Tao
- Subjects
Breeding program ,Genotype ,Transcription, Genetic ,Sequence analysis ,Biology ,Polymerase Chain Reaction ,Chromosomes, Plant ,Gene Expression Regulation, Plant ,Genetics ,Transgenes ,Allele ,Gene ,Alleles ,Regulation of gene expression ,Models, Genetic ,business.industry ,Gene Expression Profiling ,food and beverages ,Oryza ,General Medicine ,Sequence Analysis, DNA ,Plants ,Phenotype ,Biotechnology ,Gene expression profiling ,Natural population growth ,Seeds ,RNA Interference ,business ,Agronomy and Crop Science - Abstract
Rice seed size is an important agronomic trait in determining the yield potential, and four seed size related genes (GS3, GW2, qSW5/GW5 and GIF1) have been cloned in rice so far. However, the relationship among these four genes is still unclear, which will impede the process of gene pyramiding breeding program to some extent. To shade light on the relationship of above four genes, gene expression analysis was performed with GS3-RNAi, GW2-RNAi lines and CSSL of qSW5 at the transcriptional level. The results clearly showed that qSW5 and GW2 positively regulate the expression of GS3. Meanwhile, qSW5 can be down-regulated by repression of GW2 transcription. Additionally, GIF1 expression was found to be positively regulated by qSW5 but negatively by GW2 and GS3. Moreover, the allelic effects of qSW5 and GS3 were detailedly characterized based on a natural population consisting of 180 rice cultivars. It was indicated that mutual interactions exist between the two genes, in which, qSW5 affecting seed length is masked by GS3 alleles, and GS3 affecting seed width is masked by qSW5 alleles. These findings provide more insights into the molecular mechanisms underlying seed size development in rice and are likely to be useful for improving rice grain yield.
- Published
- 2011
33. A 796 bp PsPR10 gene promoter fragment increased root-specific expression of the GUS reporter gene under the abiotic stresses and signal molecules in tobacco
- Author
-
Xiangbin Xu, Sai Guo, Longbiao Guo, Jun-Jun Liu, Qian Qian, Hongmiao Song, Kai Chen, and Huizhong Wang
- Subjects
DNA, Plant ,Transgene ,Molecular Sequence Data ,Bioengineering ,GUS reporter system ,Genetically modified crops ,Biology ,Applied Microbiology and Biotechnology ,Plant Roots ,chemistry.chemical_compound ,Stress, Physiological ,Tobacco ,Promoter Regions, Genetic ,Abscisic acid ,Glucuronidase ,Sequence Deletion ,Genetics ,Reporter gene ,Jasmonic acid ,fungi ,food and beverages ,Promoter ,General Medicine ,Sequence Analysis, DNA ,Pinus ,Plants, Genetically Modified ,Molecular biology ,Recombinant Proteins ,Artificial Gene Fusion ,chemistry ,Salicylic acid ,Biotechnology - Abstract
A 1681 bp PsPR10 promoter was isolated from Pinus strobus and a series of 5′-deletions were fused to the β-glucuronidase (GUS) reporter gene and introduced into tobacco. GUS activity in P796 (−796 to +69) construct transgenic plant roots was similar with that of P1681 and higher than those of the P513 (−513 to +69) and P323 (−323 to +69) transgenic plants. Moreover, the abiotic stresses of NaCl, PEG 6000 and mannitol, and salicylic acid (SA), abscisic acid (ABA) and jasmonic acid (JA) induced higher GUS activity in the roots of P796 transgenic tobacco. This study provides a potential inducible root-specific promoter for transgenic plants.
- Published
- 2010
34. Comparative proteomic analysis of differentially expressed proteins in shoots of Salicornia europaea under different salinity
- Author
-
Yinxin Li, Xiaofang Li, Xianyang Chen, Pengxiang Fan, Hongmiao Song, and Xuchu Wang
- Subjects
Proteomics ,Soil salinity ,Salicornia europaea ,Proteome ,Chenopodiaceae ,Sodium Chloride ,Photosynthesis ,Biochemistry ,Models, Biological ,Botany ,Cluster Analysis ,Electrophoresis, Gel, Two-Dimensional ,Ions ,biology ,Abiotic stress ,Gene Expression Profiling ,Salt-Tolerant Plants ,General Chemistry ,biology.organism_classification ,Salinity ,Ion homeostasis ,Gene Expression Regulation ,Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ,Shoot ,Salts ,Plant Shoots - Abstract
Soil salinity is a major abiotic stress that limits agriculture productivity worldwide. Salicornia europaea is a succulent annual euhalophyte and one of the most salt tolerant plant species. The elucidation of its salt tolerance mechanism is of significance for generating salt-tolerant crops. In this study, we provided high resolution of proteome reference maps of S. europaea shoot and obtained evidence on the salt tolerance mechanism by analyzing the proteomic responses of this plant to high salinity. Our results demonstrated significant variations existed in 196 out of 1880 protein spots detected on CBB stained 2-DE gels. Of these, 111 proteins were identified by mass spectrometry. Among them, the majority was energy production and conversion related proteins, followed by photosynthesis and carbohydrate metabolism associated enzymes. Analysis of protein expression patters revealed that energy production and ion homeostasis associated proteins played important roles for this plant salt tolerance ability. Hierarchical clustering results revealed many proteins were involved in S. europaea salt tolerance mechanism as a dynamic network. Finally, based on our proteomic results, we brought forward a possible schematic representation of mechanism associated with the systematic salt tolerance phenotype in S. europaea.
- Published
- 2009
35. Functional characterization of AtHsp90.3 in Saccharomyces cerevisiae and Arabidopsis thaliana under heat stress.
- Author
-
Xiangbin Xu, Hongmiao Song, Zhenhua Zhou, Nongnong Shi, Qicai Ying, and Huizhong Wang
- Subjects
ARABIDOPSIS thaliana ,SACCHAROMYCES cerevisiae ,TRANSGENIC plants ,TRANSCRIPTION factors ,HOMEOSTASIS - Abstract
The function of cytosolic AtHsp90.3 was characterized by complementing the Saccharomyces cerevisiae endogenous Hsp90 genes and overexpressing it in Arabidopsis thaliana. Though AtHsp90.3 supported the yeast growth under heat stress, in Arabidopsis, compared to the wild type, the transgenic plants overexpressing cytosolic AtHsp90.3 were more sensitive to heat stress with a lower germination rate and higher mortality but and more tolerant to high Ca
2+ . Transcriptional expression of heat stress transcription factors, AtHsfA1d, AtHsfA7a and AtHsfB1, and two Hsps, AtHsp101 and AtHsp17, was delayed by constitutive overexpression of cytosolic AtHsp90.3 under heat stress. These results indicate that overexpressing AtHsp90.3 impaired plant tolerance to heat stress and proper homeostasis of Hsp90 was critical for cellular stress response and/or tolerance in plants. [ABSTRACT FROM AUTHOR]- Published
- 2010
- Full Text
- View/download PDF
36. Overexpression of Organellar and Cytosolic AtHSP90 in Arabidopsis thaliana Impairs Plant Tolerance to Oxidative Stress.
- Author
-
Hongmiao Song, Pengxiang Fan, and Yinxin Li
- Subjects
- *
PLANT genetics , *DISEASE resistance of plants , *MOLECULAR biology , *ARABIDOPSIS thaliana , *OXIDATIVE stress , *OXIDATION-reduction reaction , *HEAT shock proteins - Abstract
Three AtHSP90 isoforms, cytosol-localized AtHSP90.2, chloroplast-localized AtHSP90.5, and endoplasmic reticulum (ER)-localized AtHSP90.7 genes, were constitutively overexpressed in Arabidopsis thaliana to study their functional mechanisms under oxidative stress. Overexpression of AtHSP90 genes reduced germination of transgenic seeds under oxidative stress. When exposed to 10 mM H2O2, AtHSP90 transgenic seedlings displayed lower activities of superoxide dismutase, catalase, and peroxidase; higher content of malondialdehyde; and higher levels of protein damage than detected in the wild type. This indicated that overexpression of AtHSP90.2, AtHSP90.5, and AtHSP90.7 in Arabidopsis impaired plant tolerance to oxidative stress. Moreover, overexpression of chloroplast- and ER-localized AtHSP90 resulted in lower resistance to oxidative stress than that of cytosolic AtHSP90. This suggested that HSP90.2, HSP90.5, and HSP90.7 localized in different cellular compartments were involved in different functional mechanisms during oxidative stress. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
37. Comparative Proteomic Analysis of Differentially Expressed Proteins in Shoots of Salicornia europaeaunder Different Salinity.
- Author
-
Xuchu Wang, Pengxiang Fan, Hongmiao Song, Xianyang Chen, Xiaofang Li, and Yinxin Li
- Published
- 2009
- Full Text
- View/download PDF
38. Overexpression of AtHsp90.2, AtHsp90.5 and AtHsp90.7 in Arabidopsis thaliana enhances plant sensitivity to salt and drought stresses.
- Author
-
Hongmiao Song, Rongmin Zhao, Pengxiang Fan, Xuchu Wang, Xianyang Chen, and Yinxin Li
- Subjects
ARABIDOPSIS thaliana ,DROUGHTS ,WATER shortages ,PLANT genetic engineering ,SEED viability ,TRANSGENIC plants ,PLANT physiology ,GERMINATION ,PLANT embryology - Abstract
Three AtHsp90 isoforms, cytosolic AtHsp90.2, chloroplast-located AtHsp90.5, and endoplasmic reticulum (ER)-located AtHsp90.7, were characterized by constitutive overexpressing their genes in Arabidopsis thaliana. Both types of the transgenic plants overexpressing cytosolic and organellar AtHsp90s showed reduced tolerance to salt and drought stresses with lower germination rates and fresh weights, but improved tolerance to high concentration of Ca
2+ comparing with the wild type plants. Transcriptional analysis of ABA-responsive genes, RD29A, RD22 and KIN2 under salt and drought stresses, indicated that the induction expression of these genes was delayed by constitutive overexpression of cytosolic AtHsp90.2, but was hardly affected by that of organellar AtHsp90.5 and AtHsp90.7. These results implied that Arabidopsis different cellular compartments-located Hsp90s in Arabidopsis might be involved in abiotic stresses by different functional mechanisms, probably through ABA-dependent or Ca2+ pathways, and proper homeostasis of Hsp90 was critical for cellular stress response and/or tolerance in plants. [ABSTRACT FROM AUTHOR]- Published
- 2008
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.