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Dehydration responsive element (DRE)-binding proteins comprise a family of proteins that have important roles in abiotic stress processes. The present study aimed at elucidating the molecular basis of the stress tolerance mechanism in poplar. We isolated a gene, PeDREB2L, from the desert tree Populus euphratica Oliva. PeDREB2L contains a conserved AP2/ERF domain, a nuclear localization signal at the N-terminus and a serine-rich region at the C-terminus. PeDREB2L binds specifically to DRE elements and is expressed ubiquitously in all tissues, including roots, stems, and leaves. Expression of PeDREB2L in leaves increased under dehydration, salt, and abscisic acid stress treatments. Furthermore, PeDREB2L-GFP ectopically expressed in Arabidopsis gave strong green fluorescent protein signals in the nucleus of transgenic Arabidopsis under unstressed conditions and resulted in an improved tolerance against drought and freezing under stress conditions, while the Arabidopsis protein gene DREB2A-GFP used as a control only gave a weak fluorescent. We expected that the PeDREB2L might be useful in improving abiotic stress tolerance in transgenic plants. 相似文献
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The low oxygen,oxidative and osmotic stress responses synergistically act through the ethylene response factor VII genes RAP2.12, RAP2.2 and RAP2.3
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Csaba Papdi Imma Pérez‐Salamó Mary Prathiba Joseph Beatrice Giuntoli László Bögre Csaba Koncz László Szabados 《The Plant journal : for cell and molecular biology》2015,82(5):772-784
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拟南芥非生物胁迫应答基因表达的调节子研究概况 总被引:3,自引:0,他引:3
分子生物学研究表明,植物中由诸如干旱、高盐和低温等环境胁迫因子诱导的几个基因具有多种功能。大多数干旱应答基因是由植物激素脱落酸(ABA)诱导的,但也有少数基因例外。对模式植物拟南芥基因表达中的干旱应答基因的分析表明,至少存在4个独立调节系统(调节子)。对典型胁迫诱导表达的一些基因中启动子的顺势作用元件和影响这些基因表达的转录子也已进行了分析。已经分离出与脱水效应元件/C重复序列(DRE/CRT)顺势作用元件结合的转录因子,并命名为DRE结合蛋白1/C重复序列结合因子(DREB1/CBF)和DRE结合蛋白2(DREB2)。在转基因拟南芥植株中,DREB1/CBF过量表达可增加其抗寒、抗旱和抗盐碱的能力。DREB1/CBF基因已成功地在许多不同作物中得到应用,从而提高作物对非生物胁迫的耐受性。与胁迫反应相关的其他转录因子的研究也正在取得进展。 相似文献
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DREB转录因子研究进展 总被引:9,自引:1,他引:8
DREB转录因子即干旱应答元件结合蛋白质,它能特异结合启动子中含有 DRE/CRT 顺式元件,激活许多逆境诱导基因的表达,增强植物对逆境的忍耐力。介绍DREB转录因子与DRE顺式作用元件的关系,DREB 转录因子与 DRE 元件的结合特异性,DREB 的结构特点和功能,DREB 转录因子的表达调控,DREB 转录因子的克隆及鉴定等方面的研究进展,简述 DREB 转录因子对调控逆境诱导基因的表达具有非常重要的作用,在提高植物综合抗逆性方面将有巨大的应用前景。同时,指出 DREB 转录因子在信号转导、作用机理及基因表达等方面的复杂性。
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Soybean DREB1/CBF‐type transcription factors function in heat and drought as well as cold stress‐responsive gene expression
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Satoshi Kidokoro Keitaro Watanabe Teppei Ohori Takashi Moriwaki Kyonoshin Maruyama Junya Mizoi Nang Myint Phyu Sin Htwe Yasunari Fujita Sachiko Sekita Kazuo Shinozaki Kazuko Yamaguchi‐Shinozaki 《The Plant journal : for cell and molecular biology》2015,81(3):505-518
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DNA-binding specificity of the ERF/AP2 domain of Arabidopsis DREBs, transcription factors involved in dehydration- and cold-inducible gene expression. 总被引:58,自引:0,他引:58
Yoh Sakuma Qiang Liu Joseph G Dubouzet Hiroshi Abe Kazuo Shinozaki Kazuko Yamaguchi-Shinozaki 《Biochemical and biophysical research communications》2002,290(3):998-1009
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Arabidopsis DREB2A-interacting proteins function as RING E3 ligases and negatively regulate plant drought stress-responsive gene expression 总被引:3,自引:0,他引:3
Qin F Sakuma Y Tran LS Maruyama K Kidokoro S Fujita Y Fujita M Umezawa T Sawano Y Miyazono K Tanokura M Shinozaki K Yamaguchi-Shinozaki K 《The Plant cell》2008,20(6):1693-1707
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