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Your search keyword '"Zhong, Zheke"' showing total 121 results
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121 results on '"Zhong, Zheke"'

13. Integrated Genomics and Transcriptomics Provide Insights into Salt Stress Response in Bacillus subtilis ACP81 from Moso Bamboo Shoot (Phyllostachys praecox) Processing Waste.

Author

Li, Qiaoling, Huang, Zhiyuan, Zhong, Zheke, Bian, Fangyuan, and Zhang, Xiaoping

Subjects
BACILLUS subtilis, BAMBOO shoots, TRANSCRIPTOMES, HYDROLASES, GENOMICS, AMYLOLYSIS, CELLULASE, DIGESTIVE enzymes
Abstract

Salt stress is detrimental to the survival of microorganisms, and only a few bacterial species produce hydrolytic enzymes. In this study, we investigated the expression of salt stress-related genes in the salt-tolerant bacterial strain Bacillus subtilis ACP81, isolated from bamboo shoot processing waste, at the transcription level. The results indicate that the strain could grow in 20% NaCl, and the sub-lethal concentration was 6% NaCl. Less neutral protease and higher cellulase and β-amylase activities were observed for B. subtilis ACP81 under sub-lethal concentrations than under the control concentration (0% NaCl). Transcriptome analysis showed that the strain adapted to high-salt conditions by upregulating the expression of genes involved in cellular processes (membrane synthesis) and defense systems (flagellar assembly, compatible solute transport, glucose metabolism, and the phosphotransferase system). Interestingly, genes encoding cellulase and β-amylase-related (malL, celB, and celC) were significantly upregulated and were involved in starch and sucrose metabolic pathways, and the accumulated glucose was effective in mitigating salt stress. RT-qPCR was performed to confirm the sequencing data. This study emphasizes that, under salt stress conditions, ACP81 exhibits enhanced cellulase and β-amylase activities, providing an important germplasm resource for saline soil reclamation and enzyme development. [ABSTRACT FROM AUTHOR]

Published
2024
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46. PCR-DGGE analysis of soil bacterium community diversity in farmland influenced by biochar

Author

何莉莉 He Lili, 钟哲科 Zhong Zheke, 杨慧敏 Yang Huimin, 公丕涛 Gong Pitao, 吕豪豪 Lü Haohao, 刘玉学 Liu Yuxue, and 杨生茂 Yang Shengmao

Subjects
Ecology, biology, Agronomy, Community diversity, Biochar, Environmental science, biology.organism_classification, Ecology, Evolution, Behavior and Systematics, Bacteria, Pcr dgge
Published
2014

48. Effects of key growth conditions on endogenous hormone content in tillering stem bases, germination of lateral buds, and biomass allocation in Indocalamus decorus.

Author

Gao, Guibin, Zhong, Hao, Wu, Zhizhuang, Li, Neng, Zhong, Zheke, Pan, Yanhong, and Wu, Liangru

Abstract

Physiological responses and changes in growth of Indocalamus decorus Q.H.Dai under different ecological conditions are essential for further understanding growth regulation and adaptive mechanisms and establishing an evidence-based management system for optimal growth. In this study, the endogenous hormone content in tillering stem bases, germination of lateral buds, and biomass allocation of this bamboo species in different growth environments were investigated. Among the endogenous hormones in the basal stems of tillers, indole-3-pyruvic acid and zeatin riboside were highly correlated with lateral buds that germinated to form shoots, while gibberellic acid was highly correlated with lateral buds that germinated to form rhizomes. The best lateral bud germination characteristics were achieved with full sun, a density of six plantlets per pot, and watering every 6 days. I. decorus plantlets used different resource allocation strategies depending on treatment. Different ecological factors influenced endogenous hormones in the bamboo stem base, which affected lateral bud germination and biomass allocation. [ABSTRACT FROM AUTHOR]

Published
2018
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49. Comparison of heavy metal phytoremediation in monoculture and intercropping systems of <italic>Phyllostachys praecox</italic> and <italic>Sedum plumbizincicola</italic> in polluted soil.

Author

Bian, Fangyuan, Zhong, Zheke, Wu, Shengchun, Zhang, Xiaoping, Yang, Chuanbao, and Xiong, Xiaoyi

Subjects
*PHYLLOSTACHYS, *MONOCULTURE agriculture, *PHYTOREMEDIATION, *INTERCROPPING, *SOIL composition, *HEAVY metals
Abstract

A bamboo species (Phyllostachys praecox) and a Cd/Zn hyperaccumulator (Sedum plumbizincicola) were tested under different planting systems to compare their heavy metal phytoremediation ability. P. praecox (MP), S. plumbizincicola (MS) and P. praecox × S. plumbizincicola (IPS) plantations were established in Cu, Zn, and Cd-contaminated soil. Soil properties and heavy metal contents in plants were determined and compared after four years of plantation establishment. The rankings of available and total metal contents in soil layers were MP > MS > IPS (0-20 cm) and MP > IPS > MS (20-40 cm, except for Cu), respectively. The Cu and Zn contents in mature bamboo tissues were significantly lower, but the Cd contents in bamboo tissues (except for leaves) higher, in the IPS than in the MP. The bioconcentration and the translocation factors in most of bamboo tissues showed an increasing trend from the MP to the IPS. Heavy metal distribution in plants is greatly affected by the planting patterns. The tested intercropping system of two plant species showed higher biomass productivity, implying more heavy metals can be removed from the soil through the harvesting of plants. Therefore, the IPS leads to significant improvement of soil phytoremediation. [ABSTRACT FROM AUTHOR]

Published
2018
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50. Intensive management increases soil acidification and phytotoxic Al content in Phyllostachys praecox stands in Southeast China.

Author

Gui, Renyi, Wu, Wei, Zhuang, Shunyao, and Zhong, Zheke

Subjects
SOIL acidification, MULCHING, PHYLLOSTACHYS, SOIL acidity, PHYTOTOXICITY, SOIL management
Abstract

Intensive management with an organic matter mulching technique on Phyllostachys praecox aims to promote economic profit, but causes severe soil acidification, which can increase soil phytotoxic Al content and induce bamboo-stand deterioration. In this work, the relationships among soil acidity, soil phytotoxic Al content, and total Al content in bamboo bodies were evaluated using the organic matter mulching technique. Results demonstrated that soil pH dramatically decreased from 6.53 to 3.60 after 16 years in P. praecox stands that developed from the former paddy field. During the bamboo-cultivation period, both phytotoxic Al content (extracted by 8-hydroxyquionline) in soils and Al content in bamboo roots increased significantly from 48.25 to 108.0 mg kg−1 and 594.2 to 1073 mg kg−1, respectively. Phytotoxic Al in soil and Al in bamboo were positively related to the cultivation duration with organic matter mulching technique. The current intensive management was mainly responsible for the bamboo deterioration due to dramatic acidification and increased phytotoxic Al. Therefore, an improved management should be adopted for sustainable bamboo production in the future. [ABSTRACT FROM AUTHOR]

Published
2018
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