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拟南芥根生长发育与应答外源谷氨酸机理中第一个遗传因子的发现

发表时间:2010-04-15  浏览量:1534  下载量:761
全部作者: 巩元勇,瞿小青,刘来华
作者单位: 中国农业大学资源与环境学院
摘 要: 拟南芥根系能够感应外源L-谷氨酸(L-glutamate,L-Glu)信号并改变其生长和形态结构,但是,该生物学事件的分子遗传学基础尚未知。在5 mmol/L L-Glu处理下,通过对T-DNA插入的20个谷氨酸受体基因的(AtGLRs)突变体(atglr)生长表型的筛选,与野生型相比,仅发现atglr2.5的根系生长明显失去对L-Glu的敏感性反应。由此推知:atglr2.5很可能作为一个重要的遗传因子参与L-Glu调控根系生长发育的分子机理。
关 键 词: 分子生物学;L-谷氨酸;拟南芥;atglr2.5;根系形态构成
Title: Identification of a first genetic component required for root growth and development of Arabidopsis in response to external L-glutamate
Author: GONG Yuanyong, QU Xiaoqing, LIU Laihua
Organization: College of Resources and Environmental Sciences, China Agricultural University
Abstract: Arabidopsis roots are able to sense external L-glutamate (L-Glu) as a signal to consequently alter their growth pattern and architecture, but a molecular genetics underlying this biological process remains absolutely unknown. By growth phenotyping of Arabidopsis T-DNA insertion mutants defective in 20 individual glutamate receptor genes (AtGLRs) under 5 mmol/L L-Glu, this research revealed that only atglr2.5 mutant lines greatly lost their root-sensitivity to L-Glu compared to the wild type plants. This leads to a suggestion that atglr2.5 would be a crucial genetic component involved in the molecular mechanism of root growth and development in response to L-Glu.
Key words: molecular biology; L-glutamate; Arabidopsis thaliana; atglr2.5; root architecture
发表期数: 2010年4月第7期
引用格式: 巩元勇,瞿小青,刘来华. 拟南芥根生长发育与应答外源谷氨酸机理中第一个遗传因子的发现[J]. 中国科技论文在线精品论文,2010,3(7):660-664.
 
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