Transcription Factor NAC075 Delays Leaf Senescence by Deterring Reactive Oxygen Species Accumulation in Arabidopsis.
Transcription Factor NAC075 Delays Leaf Senescence by Deterring Reactive Oxygen Species Accumulation in Arabidopsis.
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转录因子 NAC075 通过阻止拟南芥中活性氧的积累来延迟叶片衰老
DOI:
10.3389/fpls.2021.634040
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发表时间:
2021
影响因子:
5.6
通讯作者:
Li Z
中科院分区:
文献类型:
--
作者:
Kan C;Zhang Y;Wang HL;Shen Y;Xia X;Guo H;Li Z
Leaf senescence is a highly complex genetic process that is finely tuned by multiple layers of regulation. Among them, transcriptional regulation plays a critical role in controlling the initiation and progression of leaf senescence. Here, we found that the NAC transcription factor NAC075 functions as a novel negative regulator of leaf senescence. Loss of function of NAC075 promotes leaf senescence in an age-dependent manner, whereas constitutive overexpression of NAC075 delays senescence in Arabidopsis. Transcriptome analysis revealed that transcript levels of antioxidant enzymes such as catalase (CAT), ascorbate peroxidase (APX), and superoxide dismutase (SOD) are significantly suppressed in nac075 mutants compared with wild-type plants. Electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) analyses revealed that NAC075 directly binds the promoter of catalase 2 (CAT2). Moreover, genetic analysis showed that overexpression of CAT2 suppresses the overproduction of reactive oxygen species (ROS) and the early senescence phenotypes of nac075 mutants, suggesting that CAT2 acts downstream of NAC075 to delay leaf senescence by repressing ROS accumulation. Collectively, our findings provide a new regulatory module involving NAC075-CAT2-ROS in controlling leaf senescence in Arabidopsis.
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DOI:
10.1073/pnas.1721523115
发表时间:
2018-05-22
影响因子:
11.1
作者:
Kim HJ;Park JH;Kim J;Kim JJ;Hong S;Kim J;Kim JH;Woo HR;Hyeon C;Lim PO;Nam HG;Hwang D
通讯作者:
Hwang D
DOI:
10.1073/pnas.97.7.3718
发表时间:
2000-03-28
影响因子:
11.1
作者:
Cutler, SR;Ehrhardt, DW;Somerville, CR
通讯作者:
Somerville, CR
影响因子:
14.9
作者:
Lindemose S;Jensen MK;Van de Velde J;O'Shea C;Heyndrickx KS;Workman CT;Vandepoele K;Skriver K;De Masi F
通讯作者:
De Masi F
影响因子:
7.2
作者:
Clough, SJ;Bent, AF
通讯作者:
Bent, AF
影响因子:
56.9
作者:
Kim, Jin Hee;Woo, Hye Ryun;Nam, Hong Gil
通讯作者:
Nam, Hong Gil