共查询到20条相似文献，搜索用时 15 毫秒
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Xu Feng Peng Feng Huilin Yu Xingyu Yu Qi Sun Siyu Liu Thuy Nguyen Minh Jun Chen Di Wang Qing Zhang Lei Cao Changmei Zhou Qiang Li Jialei Xiao Shihua Zhong Aoxue Wang Lijuan Wang Hongyu Pan Xiaodong Ding 《Plant, cell & environment》2020,43(5):1192-1211
Although the function and regulation of SnRK1 have been studied in various plants, its molecular mechanisms in response to abiotic stresses are still elusive. In this work, we identified an AP2/ERF domain-containing protein (designated GsERF7) interacting with GsSnRK1 from a wild soybean cDNA library. GsERF7 gene expressed dominantly in wild soybean roots and was responsive to ethylene, salt, and alkaline. GsERF7 bound GCC cis-acting element and could be phosphorylated on S36 by GsSnRK1. GsERF7 phosphorylation facilitated its translocation from cytoplasm to nucleus and enhanced its transactivation activity. When coexpressed in the hairy roots of soybean seedlings, GsSnRK1(wt) and GsERF7(wt) promoted plants to generate higher tolerance to salt and alkaline stresses than their mutated species, suggesting that GsSnRK1 may function as a biochemical and genetic upstream kinase of GsERF7 to regulate plant adaptation to environmental stresses. Furthermore, the altered expression patterns of representative abiotic stress-responsive and hormone-synthetic genes were determined in transgenic soybean hairy roots after stress treatments. These results will aid our understanding of molecular mechanism of how SnRK1 kinase plays a cardinal role in regulating plant stress resistances through activating the biological functions of downstream factors. 相似文献
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Tanaka H Osakabe Y Katsura S Mizuno S Maruyama K Kusakabe K Mizoi J Shinozaki K Yamaguchi-Shinozaki K 《The Plant journal : for cell and molecular biology》2012,70(4):599-613
Membrane-anchored receptor-like protein kinases (RLKs) recognize extracellular signals at the cell surface and activate the downstream signaling pathway by phosphorylating specific target proteins. We analyzed a receptor-like cytosolic kinase (RLCK) gene, ARCK1, whose expression was induced by abiotic stress. ARCK1 belongs to the cysteine-rich repeat (CRR) RLK sub-family and encodes a cytosolic protein kinase. The arck1 mutant showed higher sensitivity than the wild-type to ABA and osmotic stress during the post-germinative growth phase. CRK36, an abiotic stress-inducible RLK belonging to the CRR RLK sub-family, was screened as a potential interacting factor with ARCK1 by co-expression analyses and a yeast two-hybrid system. CRK36 physically interacted with ARCK1 in plant cells, and the kinase domain of CRK36 phosphorylated ARCK1 in vitro. We generated CRK36 RNAi transgenic plants, and found that transgenic plants with suppressed CRK36 expression showed higher sensitivity than arck1-2 to ABA and osmotic stress during the post-germinative growth phase. Microarray analysis using CRK36 RNAi plants revealed that suppression of CRK36 up-regulates several ABA-responsive genes, such as LEA genes, oleosin, ABI4 and ABI5. These results suggest that CRK36 and ARCK1 form a complex and negatively control ABA and osmotic stress signal transduction. 相似文献
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Ying Li Liang Zhang Dekuan Li Zhibin Liu Jianmei Wang Xufeng Li Yi Yang 《Plant, cell & environment》2016,39(3):571-582
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一个编码1，3，4—三磷酸肌醇5／6激酶类似物的拟南芥基因的克隆及其在胁迫条件下的表达分析 总被引：3，自引：0，他引：3
以对照和盐处理的拟南芥幼苗为材料,利用mRNA差异显示技术筛选得到一个受盐诱导的3′端cDNA部分序列。其相应的基因AtITL1编码1,3,4-三磷酸肌醇5/6-激酶类似物。Northem blot分析表明,该基因除受盐诱导外,还受低温诱导,但几乎不受干旱和ABA诱导,分析AtITL1基因的5′区发现存在对渗透及低温胁迫起反应而对ABA不起反应的DRE/CRT顺式作用元件。这些研究表明,编码1,3,4-三磷酸肌醇5/6-激酶类似物的拟南芥基因可能参与了ABA不依赖的胁迫信号传递途径。 相似文献
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干旱、高盐、高温和低温等非生物胁迫及各种病虫害等生物胁迫严重影响植物的生长发育和作物产量.蛋白激酶主要通过激活不同的磷酸化途径介导外界环境信号的感知和传递,调控下游抗逆基因的转录表达,启动相应的生理生化等适应性反应来降低或消除危害.该文对近年来国内外有关与非生物胁迫和生物胁迫信号传导相关的受体蛋白激酶、促分裂原活化蛋白激酶、钙依赖而钙调素不依赖的蛋白激酶、蔗糖不发酵相关蛋白激酶和其它胁迫相关的植物蛋白激酶的研究进展进行综述,探索蛋白激酶介导的不同磷酸化途径应对逆境胁迫的信号传递网络,为进一步了解植物逆境分子应答机制提供依据. 相似文献
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以抗旱玉米自交系旱21为材料,克隆获得玉米分子伴侣基因Zm Bi P1,通过荧光定量PCR技术研究Zm Bi P1基因的表达模式,并将Zm Bi P1基因转入拟南芥中研究其功能。荧光定量PCR结果表明,Zm Bi P1基因在玉米自交系旱21的不同组织器官中均有表达,且在子房中表达量最高。Zm Bi P1基因受甘露醇胁迫诱导上调表达,受盐胁迫诱导下调表达。转基因拟南芥功能验证结果表明,过表达Zm Bi P1基因导致拟南芥在种子萌发时期对盐和甘露醇胁迫的耐受能力减弱。这些结果表明Zm Bi P1基因可能是逆境反应信号传递途径的负调节因子。 相似文献
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干旱、盐碱、高温等非生物逆境胁迫严重影响作物生长发育、产量和品质。在遭受非生物逆境的威胁时,植物通过信号受体,可感知、转导胁迫信号,启动一系列抗逆相关基因的表达,最终缓解或抵御非生物逆境胁迫对植物造成的危害。其中,蛋白激酶和蛋白磷酸酯酶的磷酸化/去磷酸化作用在植物感受外界胁迫信号的分子传递过程中起到开关的作用。正常情况下,蛋白激酶磷酸化开启信号转导途径,启动相应的抗逆基因表达反应;当信号消失后,蛋白激酶去磷酸化将信号转导途径关闭,达到调控植物正常生长的目的。因此,蛋白激酶在调控感受胁迫信号、启动各种非生物逆境胁迫响应中起到了极其重要的作用。近年来,对植物蛋白激酶参与非生物胁迫响应的研究倍受关注。本文阐述了不同类型蛋白激酶在改良作物非生物胁迫抗性上的应用,为进一步研究提供资料。 相似文献
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Hua‐Shan Huang Takahiko Inoue Kiyoshi Ito Tadashi Yoshimoto 《Acta Crystallographica. Section D, Structural Biology》2001,57(7):1030-1031
Glycerol kinase (GlpK) is an important enzyme which catalyzes the rate‐limiting step in a central biochemical pathway involving glycerol metabolism. GlpK from the thermophile Thermus aquaticus has been overexpressed in glpK‐deficient Escherichia coli and crystallized by the hanging‐drop method. The crystal belongs to the cubic space group I23, with unit‐cell parameters a = b = c = 163.94 (3) Å. Native data were collected to 2.87 Å resolution on a Cu Kα rotating‐anode X‐ray source. 相似文献
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González Besteiro MA Bartels S Albert A Ulm R 《The Plant journal : for cell and molecular biology》2011,68(4):727-737
Plants perceive UV-B radiation as an informational signal by a pathway involving UVR8 as UV-B photoreceptor, activating photomorphogenic and acclimation responses. In contrast, the response to UV-B as an environmental stress involves mitogen-activated protein kinase (MAPK) signalling cascades. Whereas the perception pathway is plant specific, the UV-B stress pathway is more broadly conserved. Knowledge of the UV-B stress-activated MAPK signalling pathway in plants is limited, and its potential interplay with the UVR8-mediated pathway has not been defined. Here, we show that loss of MAP kinase phosphatase 1 in the mutant mkp1 results in hypersensitivity to acute UV-B stress, but without impairing UV-B acclimation. The MKP1-interacting proteins MPK3 and MPK6 are activated by UV-B stress and are hyperactivated in mkp1. Moreover, mutants mpk3 and mpk6 exhibit elevated UV-B tolerance and partially suppress the UV-B hypersensitivity of mkp1. We show further that the MKP1-regulated stress-response MAPK pathway is independent of the UVR8 photoreceptor, but that MKP1 also contributes to survival under simulated sunlight. We conclude that, whereas UVR8-mediated acclimation in plants promotes UV-B-induced defence measures, MKP1-regulated stress signalling results when UV-B protection and repair are insufficient and damage occurs. The combined activity of these two mechanisms is crucial to UV-B tolerance in plants. 相似文献
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Tamar Avin‐Wittenberg 《Plant, cell & environment》2019,42(3):1045-1053
Being unable to move, plants are regularly exposed to changing environmental conditions, among which various types of abiotic stress, such as heat, drought, salt, and so forth. These might have deleterious effects on plant performance and yield. Plants thus need to adapt using appropriate stress responses. One of the outcomes of abiotic stress is the need to degrade and recycle damaged proteins and organelles. Autophagy is a conserved eukaryotic mechanism functioning in the degradation of proteins, protein aggregates, and whole organelles. It was previously shown to have a role in plant abiotic stress. This review will describe the current knowledge regarding the involvement of autophagy in plant abiotic stress response, mechanisms functioning in autophagy induction during stress, and possible direction for future research. 相似文献
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Penny J Tricker Carlos M Rodríguez López P Hadley C Wagstaff Mike J Wilkinson 《Plant signaling & behavior》2013,8(10)
Epigenetic modification of the genome via cytosine methylation is a dynamic process that responds to changes in the growing environment. This modification can also be heritable. The combination of both properties means that there is the potential for the life experiences of the parental generation to modify the methylation profiles of their offspring and so potentially to “pre-condition” them to better accommodate abiotic conditions encountered by their parents. We recently identified high vapor pressure deficit (vpd)-induced DNA methylation at 2 gene loci in the stomatal development pathway and an associated reduction in leaf stomatal frequency.1 Here, we test whether this epigenetic modification pre-conditioned parents and their offspring to the more severe water stress of periodic drought. We found that 3 generations of high vpd-grown plants were better able to withstand periodic drought stress over 2 generations. This resistance was not directly associated with de novo methylation of the target stomata genes, but was associated with the cmt3 mutant’s inability to maintain asymmetric sequence context methylation. If our finding applies widely, it could have significant implications for evolutionary biology and breeding for stressful environments. 相似文献
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《Bioscience, biotechnology, and biochemistry》2013,77(6):1642-1645
Arabidopsis Cor15am is a late embryogenesis abundant (LEA) related protein that has been shown to exhibit cryoprotective activity in vitro. In this study, we further investigated the mechanisms by which Cor15am protects substrates from inactivation. Although Cor15am did not exhibit refolding activity, it showed protective activity against various stresses in vitro. This might be attributable to the activity of Cor15am in attenuating the aggregation of the substrates. Our data indicate that Cor15am functions as a protectant against various stresses by preventing protein aggregation. 相似文献