中国科技核心期刊
CN:31-1600/Q
ISSN:1004-0374
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《生命科学》 2014, 26(4): 407-413
植物生长素响应基因SAUR的研究进展
朱宇斌1,2,孔莹莹1,2,王君晖2*
(1 浙江大学医学院附属邵逸夫医院生物医学研究中心,杭州 310016;2 浙江大学生命科学学院遗传学研究所,杭州 310058)
植物激素生长素在植物生长和发育过程中起重要的调节作用,它能够诱导一系列生长素早期响应基因的表达,包括Aux/IAA、GH3 和SAUR。对拟南芥、水稻、高粱和茄科进行生物信息学分析后显示:大部分SAURs 基因没有内含子,并且成簇坐落在染色体上;它们有特定的保守区,包含生长素响应元件AuxREs 和促使mRNA 降解的下游元件DST 等。近年来,许多研究人员通过对SAUR 蛋白功能的研究,发现它们主要参与调节生长素的合成和运输,从而影响细胞的膨大,但相关的机制并不明确,有待进一步的研究。从生物信息学和功能两方面综述了植物SAUR 基因家族的研究进展,并对未来的研究方向做了展望。
 
Research advances in auxin-responsive SAUR genes
ZHU Yu-Bin1,2, KONG Ying-Ying1,2, WANG Jun-Hui2*
(1 Biomedical Research Center, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou 310016, China; 2 Institute of Genetics, College of Life Sciences, Zhejiang University, Hangzhou 310058, China)
The plant hormone auxin, critical for plant growth and development processes, plays its regulatory role mainly by inducing expression of early auxin response genes including Aux/IAA, GH3 and SAUR. As is shown by analysis on genomic information of Arabidopsis, rice, sorghum and solanceae species, most of the SAURs contain no intron, cluster on the chromosomes, include conserved specific domain in the core region, and contain auxinresponsive elements (AuxREs) as well as mRNA-destabilizing downstream element (DST) in the corresponding regions. Recently, many researchers have devoted to illustrate the functions of SAUR proteins to find that they are capable to modulate auxin synthesis and transport, and that they affect cell expansion by an unknown mechanism. In this review, we summarize recent progresses regarding biological information and the functions, and provide prospective views in the end.
 
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