共查询到20条相似文献,搜索用时 15 毫秒
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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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Identification of cold-inducible downstream genes of the Arabidopsis DREB1A/CBF3 transcriptional factor using two microarray systems 总被引:20,自引:0,他引:20
Maruyama K Sakuma Y Kasuga M Ito Y Seki M Goda H Shimada Y Yoshida S Shinozaki K Yamaguchi-Shinozaki K 《The Plant journal : for cell and molecular biology》2004,38(6):982-993
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OsDREB genes in rice,Oryza sativa L., encode transcription activators that function in drought-, high-salt- and cold-responsive gene expression 总被引:49,自引:0,他引:49
Dubouzet JG Sakuma Y Ito Y Kasuga M Dubouzet EG Miura S Seki M Shinozaki K Yamaguchi-Shinozaki K 《The Plant journal : for cell and molecular biology》2003,33(4):751-763
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Ectopic expression of a cold-inducible transcription factor, CBF1/DREB1b, in transgenic rice (Oryza sativa L.) 总被引:2,自引:0,他引:2
The gene encoding C-repeat/dehydration-responsive element binding factor 1 (CBF1/DREB1b) of Arabidopsis was introduced into rice (Oryza sativa L.) under the control of the maize ubiquitin promoter. Its incorporation and expression in transgenic rice plants were confirmed by DNA and RNA gel-blot analyses. Cold tolerance in the transgenics was not significantly different from that of the wild-type plants, as determined by ion leakage, chlorophyll fluorescence, and survival rates. However, the cold-responsive genes lip5, lip9, and OsDhn1 were up-regulated in the transgenic plants, suggesting that the cold signal transduction pathway involving CBF1 is partially conserved in this cold-labile plant. 相似文献
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DEAR1, a transcriptional repressor of DREB protein that mediates plant defense and freezing stress responses in Arabidopsis 总被引:3,自引:0,他引:3
Tomokazu Tsutsui Wataru Kato Yutaka Asada Kaori Sako Takeo Sato Yutaka Sonoda Satoshi Kidokoro Kazuko Yamaguchi-Shinozaki Masanori Tamaoki Keita Arakawa Takanari Ichikawa Miki Nakazawa Motoaki Seki Kazuo Shinozaki Minami Matsui Akira Ikeda Junji Yamaguchi 《Journal of plant research》2009,122(6):633-643
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Components of the Arabidopsis C-Repeat/Dehydration-Responsive Element Binding Factor Cold-Response Pathway Are Conserved in Brassica napus and Other Plant Species 总被引:53,自引:0,他引:53
Kirsten R. Jaglo Susanne Kleff Keenan L. Amundsen Xin Zhang Volker Haake James Z. Zhang Thomas Deits Michael F. Thomashow 《Plant physiology》2001,127(3):910-917
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