Involvement of nitric oxide-mediated alternative pathway in tolerance of wheat to drought stress by optimizing photosynthesis
文献类型：期刊论文
| 作者 | Wang, Huahua1; Huang, Junjun1; Li, Yan1; Li, Changan2; Hou, Junjie1; Liang, Weihong1 |
| 刊名 | PLANT CELL REPORTS
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 35期号:10页码:2033-2044 |
| 关键词 | Alternative pathway Drought tolerance Nitric oxide Oxidative damage Photosynthesis Wheat |
| ISSN号 | 0721-7714 |
| DOI | 10.1007/s00299-016-2014-y |
| 通讯作者 | Wang, Huahua(hhwang04@163.com) |
| 英文摘要 | NO-mediated alternative pathway plays an important role in protecting wheat seedlings against drought stress through dissipating excessive reducing equivalents generated by photosynthesis. Alternative pathway (AP) has been proven to be involved in responses to various stresses. However, the mechanisms of AP in defense response to drought stress are still lacking. The aims of this work are to investigate the role of AP in drought tolerance and how AP is induced under drought stress using two wheat cultivars with different drought tolerance. Our results showed that Longchun22 cultivar is more tolerant to drought than 98SN146 cultivar. Seedlings exposed to drought led to a significant increase in AP, and it increased more in Longchun22. Furthermore, chlorophyll fluorescence parameters (Fv/Fm, I broken vertical bar PSII, qP) decreased significantly in drought-treated seedlings, especially in 98SN146, indicating that photoinhibition occurred under drought stress. Pretreatment with SHAM, the malate-oxaloacetate shuttle activity and photosynthetic efficiency were further inhibited in drought-treated seedlings, resulting in more serious oxidative damage as indicated by higher levels of malondialdehyde and hydrogen peroxide. Moreover, NO modulated AP under drought stress by increasing AOX1a expression and pyruvate content. Taken together, these results indicate that NO-mediated AP is involved in optimizing photosynthesis under drought stress by avoiding the over-reduction of photosynthetic electron transport chain, thus reducing reactive oxygen species production and oxidative damage in wheat leaves. |
| 收录类别 | SCI |
| WOS关键词 | ELECTRON-TRANSPORT ; HYDROGEN-PEROXIDE ; RESPIRATORY PATHWAY ; MESOPHYLL PROTOPLASTS ; ARABIDOPSIS-THALIANA ; CARBON ASSIMILATION ; MOLECULAR-BIOLOGY ; UP-REGULATION ; EXCESS LIGHT ; LEAVES |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000383708500003 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557536 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, Huahua |
| 作者单位 | 1.Henan Normal Univ, Coll Life Sci, Xinxiang 453007, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Huahua,Huang, Junjun,Li, Yan,et al. Involvement of nitric oxide-mediated alternative pathway in tolerance of wheat to drought stress by optimizing photosynthesis[J]. PLANT CELL REPORTS,2016,35(10):2033-2044. |
| APA | Wang, Huahua,Huang, Junjun,Li, Yan,Li, Changan,Hou, Junjie,&Liang, Weihong.(2016).Involvement of nitric oxide-mediated alternative pathway in tolerance of wheat to drought stress by optimizing photosynthesis.PLANT CELL REPORTS,35(10),2033-2044. |
| MLA | Wang, Huahua,et al."Involvement of nitric oxide-mediated alternative pathway in tolerance of wheat to drought stress by optimizing photosynthesis".PLANT CELL REPORTS 35.10(2016):2033-2044. |
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来源：寒区旱区环境与工程研究所
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