Cellular Phosphorylation Signaling and Gene Expression in Drought Stress Responses: ABA-Dependent and ABA-Independent Regulatory Systems.
Cellular Phosphorylation Signaling and Gene Expression in Drought Stress Responses: ABA-Dependent and ABA-Independent Regulatory Systems.
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干旱应激反应中的细胞磷酸化信号传导和基因表达：依赖ABA和ABA独立的调节系统。
DOI：
10.3390/plants10040756
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发表时间：
2021-04-13
期刊：
影响因子：
--
通讯作者：
Shinozaki K
中科院分区：
文献类型：
--
作者：
Soma F;Takahashi F;Yamaguchi-Shinozaki K;Shinozaki K
干旱是一种严重而复杂的非生物胁迫，对植物生长和作物产量产生负面影响。干旱胁迫诱导了许多具有不同功能的基因获得抗旱能力。植物激素脱落酸（ABA）在干旱胁迫下主要在叶片中积累，进而激活III类snf1相关蛋白激酶2 (SnRK2s)，这是ABA信号通路的关键磷酸化调节因子。ABA通过应激应答转录因子介导多种基因表达过程，包括ABA应答元件结合蛋白(AREBs)/ abre结合因子（ABFs）和其他转录因子。种子植物还有另一类SnRK2s，即aba不响应的I类SnRK2s，它们通过mRNA衰变途径介导基因表达的稳定性，以aba不依赖的方式调节干旱胁迫下植物的生长。最近的研究已经阐明了SnRK2s的上游调控因子，raf样蛋白激酶，参与对干旱胁迫的早期反应。aba不依赖转录调控系统和aba响应调控在干旱响应基因表达中的作用。脱水反应元件（DRE）是aba非依赖性转录过程中一个重要的顺式作用元件，而aba反应元件（ABRE）是aba响应性转录过程中一个重要的顺式作用元件。本文综述了近年来拟南芥和作物对干旱胁迫的细胞和分子反应的研究进展，并重点介绍了磷酸化信号和转录网络的研究进展。我们还强调了通过aba依赖性和aba非依赖性两种主要调控途径进行转录调控的基因网络，这两种途径分别由aba应答的III类SnRK2s和aba不应答的I类SnRK2s介导。我们还讨论了干旱胁迫下这些调控系统中的串扰。
Drought is a severe and complex abiotic stress that negatively affects plant growth and crop yields. Numerous genes with various functions are induced in response to drought stress to acquire drought stress tolerance. The phytohormone abscisic acid (ABA) accumulates mainly in the leaves in response to drought stress and then activates subclass III SNF1-related protein kinases 2 (SnRK2s), which are key phosphoregulators of ABA signaling. ABA mediates a wide variety of gene expression processes through stress-responsive transcription factors, including ABA-RESPONSIVE ELEMENT BINDING PROTEINS (AREBs)/ABRE-BINDING FACTORS (ABFs) and several other transcription factors. Seed plants have another type of SnRK2s, ABA-unresponsive subclass I SnRK2s, that mediates the stability of gene expression through the mRNA decay pathway and plant growth under drought stress in an ABA-independent manner. Recent research has elucidated the upstream regulators of SnRK2s, RAF-like protein kinases, involved in early responses to drought stress. ABA-independent transcriptional regulatory systems and ABA-responsive regulation function in drought-responsive gene expression. DEHYDRATION RESPONSIVE ELEMENT (DRE) is an important cis-acting element in ABA-independent transcription, whereas ABA-RESPONSIVE ELEMENT (ABRE) cis-acting element functions in ABA-responsive transcription. In this review article, we summarize recent advances in research on cellular and molecular drought stress responses and focus on phosphorylation signaling and transcription networks in Arabidopsis and crops. We also highlight gene networks of transcriptional regulation through two major regulatory pathways, ABA-dependent and ABA-independent pathways, that ABA-responsive subclass III SnRK2s and ABA-unresponsive subclass I SnRK2s mediate, respectively. We also discuss crosstalk in these regulatory systems under drought stress.
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DOI：
10.1073/pnas.1908677116
发表时间：
2019-07-30
影响因子：
11.1
作者：
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通讯作者：
Rodriguez, Pedro L.
DOI：
10.1073/pnas.0505667103
发表时间：
2006-02-07
影响因子：
11.1
作者：
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通讯作者：
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影响因子：
5.1
作者：
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影响因子：
4.5
作者：
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影响因子：
1.2
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