Leaf senescence induced by EGY1 defection was partially restored by glucose in Arabidopsis thaliana
文献类型：期刊论文
| 作者 | Chen, Cuiyun; Wang, Jin; Zhao, Xin |
| 刊名 | BOTANICAL STUDIES
 |
| 出版日期 | 2016-02-03 |
| 卷号 | 57页码:9 |
| 关键词 | egy1 Leaf senescence Glucose Senescence-associated genes |
| ISSN号 | 1999-3110 |
| DOI | 10.1186/s40529-016-0120-3 |
| 通讯作者 | Chen, Cuiyun(chency@lzb.ac.cn) |
| 英文摘要 | Background: Ethylene-dependent gravitropism-deficient and yellow-green 1 (EGY1) protein is required for chloroplast development and photosynthesis conduction. The egy1 deletion mutants have a yellow-green phenotype and reduced granal thylakoids. Furthermore, the yellow-green phenotype of egy1 mutants is more obvious than that of wild-type (WT) plants with increasing leaf age, suggesting an early senescence in the egy1 mutants. However, the relationship between EGY1 functions and leaf senescence still remains poorly understood. Results: We observed that egy1 mutant leaves were more yellow than those of WT (the same age) in Arabidopsis thaliana. In accompany with this phenotype, leaf survival, chlorophyll content, Fv/Fm and soluble protein content decreased, and ion leakage increased significantly in egy1 mutants compared to WT plants. At molecular level, the expressions of senescence-associated genes increased, and photosynthesis genes decreased significantly in the mutants compared to those in WT plants. Furthermore, after darkness treatment, the yellow-green phenotype of egy1 mutants was more obvious than that of WT. These results indicate that the loss-of-function of egy1 gene induces leaf senescence in A. thaliana. In addition, our results showed that the yellow-green phenotype, chlorophyll content and ion leakage of egy1 mutants was partially restored after exogenously applied glucose for 5 weeks. At the same time, the expression of hexokinase 1 (HXK1) and/or senescence-associated gene 12 (SAG12) in egy1 mutants growing on 2 % glucose was lower than that in egy1 mutants without glucose. Conclusion: EGY1-defection induced leaf senescence and this senescence was partially restored by glucose in A. thaliana. |
| 收录类别 | SCI |
| WOS关键词 | GENE-EXPRESSION ; LEAVES ; PHOTOSYNTHESIS ; METABOLISM ; JASMONATE ; REFLECTANCE ; HEXOKINASE ; RESPONSES ; PLANTS ; ONSET |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000369754800001 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557103 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Chen, Cuiyun |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Stress Physiol & Ecol Lab, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Cuiyun,Wang, Jin,Zhao, Xin. Leaf senescence induced by EGY1 defection was partially restored by glucose in Arabidopsis thaliana[J]. BOTANICAL STUDIES,2016,57:9. |
| APA | Chen, Cuiyun,Wang, Jin,&Zhao, Xin.(2016).Leaf senescence induced by EGY1 defection was partially restored by glucose in Arabidopsis thaliana.BOTANICAL STUDIES,57,9. |
| MLA | Chen, Cuiyun,et al."Leaf senescence induced by EGY1 defection was partially restored by glucose in Arabidopsis thaliana".BOTANICAL STUDIES 57(2016):9. |
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来源：寒区旱区环境与工程研究所
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