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Your search keyword '"Zhang, Yi-Yue"' showing total 24 results
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24 results on '"Zhang, Yi-Yue"'

20. DRD1-Pol V-dependent self-silencing of an exogenous silencer restricts non-cell-autonomous silencing of an endogenous target gene

Author

Dong, Li, Liu, Meng, Fang, Yuan-Yuan, Zhao, Jian-Hua, He, Xiang-Feng, Ying, Xiao-Bao, Zhang, Yi-Yue, Xie, Qi, Chua, Nam-Hai, and Guo, Hui-Shan

Subjects
Arabidopsis Proteins, Sequence Analysis, RNA, fungi, Arabidopsis, food and beverages, DNA-Directed RNA Polymerases, DNA Methylation, Plants, Genetically Modified, Article, Gene Expression Regulation, Plant, RNA, Plant, Mutation, Gene Silencing, RNA, Small Interfering, RNA, Double-Stranded
Abstract

In plants, the exogenous transgene transcribing inverted-repeat (exo-IR) sequences produces double-stranded RNAs that are processed by DCL4. The 21-nt small interfering RNAs generated function as mobile signals to trigger non-cell autonomous silencing of target endogenes in the neighboring 10-15 cells. The potential involvement of nuclear silencing pathway components in signal spreading or sensing in target cells is not clear. Here, we demonstrate that the exo-IR silencer (exo-Pdsi) is negatively autoregulated through methylation spreading, which acts in cis to reinforce the self-silencing of the silencer. Mutations affecting nuclear proteins DRD1 and Pol V (NRPE1 or NRPD2) relieved exo-Pdsi self-silencing, resulting in higher levels of Pdsi transcripts, which increased the non-cell autonomous silencing of endo-PDS. Our results suggest that in an experimental silencing pathway, methylation spreading on a silencer transgene may not have a direct endogenous plant counterpart when the protein-encoding gene is the target. DRD1-Pol V-dependent de novo methylation, by acting in cis to reinforce self-silencing of exo-IR, may play a role in restraining the inappropriate silencing of active protein-coding genes in plants.

Published
2011

21. ArabidopsisSDIR1 Enhances Drought Tolerance in Crop Plants

Author

ZHANG, Yi-yue, primary, LI, Yin, additional, GAO, Ting, additional, ZHU, Hui, additional, WANG, Dong-jiang, additional, ZHANG, Hua-wei, additional, NING, Yue-se, additional, LIU, Li-jing, additional, WU, Yao-rong, additional, CHU, Cheng-cai, additional, GUO, Hui-shan, additional, and XIE, Qi, additional

Published
2008
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23. Arabidopsis SDIR1 Enhances Drought Tolerance in Crop Plants.

Author

Zhang, Yi-yue, Li, Yin, Gao, Ting, Zhu, Hui, Wang, Dong-jiang, Zhang, Hua-wei, Ning, Yue-se, Liu, Li-jing, Wu, Yao-rong, Chu, Cheng-cai, Guo, Hui-shan, and Xie, Qi

Subjects
*DROUGHT-tolerant plants, *DROUGHT tolerance, *TRANSGENIC plants, *TOBACCO, *RICE
Abstract

The article presents a study on measuring the drought-tolerance ability of transgenic tobacco and rice plants using salt-and drought-induced ring-finger 1 (SDIR1). Screening of independent transgenic lines, determination of the expression levels, RNA gel blot analysis and water loss assay are performed to the crop plants. It was found out that overexpressions of SDIR1 improves the drought tolerance ability and regulates the stress-related genes of transgenic tobacco and rice.

Published
2008
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24. [Characteristics of gut microbiome communities in the invasive African giant snail under urbanization gradient].

Author

Xie J, Zhang YY, Tang ZH, and Sun X

Subjects
Humans, Animals, Urbanization, RNA, Ribosomal, 16S genetics, Snails genetics, Snails microbiology, Soil chemistry, Gastrointestinal Microbiome genetics, Microbiota
Abstract

To investigate the diversity and community structure of gut microbiome of the invasive species, Achatina fulica , along an urbanization gradient, we collected 30 A. fulica samples from five parks in the urban, suburban, and rural areas of Xiamen City. Using full-length 16S rRNA gene sequencing performed by the third generation PacBio sequencing platform, we analyzed the community characteristics of gut microbiome and soil microbiome in different habitats. We found a significant disparity between the composition of gut microbiome of A. fulica and that of the soil microbiome in their habitats. Furthermore, the gut microbiome of A. fulica were more sensitive to urbanization. The microbial α-diversity indices (Sobs, Chao, Shannon indices) in the soil of A. fulica habitats were consistently higher than those within their guts. Despite the similar β-diversity indices of microbial communities in urban, suburban, and rural soils, we found a significant discrepancy in gut microbiome composition. Urbanization significantly influenced A. fulica gut microbiome composition. Gut microbiome of A. fulica in urban and suburban regions primarily consisted of Enterobacteriaceae, Xanthomonadaceae, and Mycoplasmataceae, while that in rural areas chiefly composed of Streptococcaceae and Paenibacillaceae. The diversity and abundance of potential human pathogenic bacteria within the gut microbiome of A. fulica significantly increased in urban environments, suggesting that urbanization escalated the risk of A. fulica transmitting potential pathogens.

Published
2023
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