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作物学报 ›› 2014, Vol. 40 ›› Issue (12): 2059-2069.doi: 10.3724/SP.J.1006.2014.02059

• 作物遗传育种·种质资源·分子遗传学 •    下一篇

粗山羊草全基因组Aux/IAA基因家族的分离、染色体定位及序列分析

乔麟轶1,4,**,李欣1,**,畅志坚1,张晓军1,詹海仙1,郭慧娟1,李建波4,常建忠3,*,郑军2,*   

  1. 1山西省农业科学院作物科学研究所 / 农业部黄土高原作物基因资源与种质创制重点实验室, 山西太原030031; 2山西省农业科学院小麦研究所, 山西临汾 041000; 3山西省农业科学院旱地农业研究中心, 山西太原030006; 4山西大学研究生院, 山西太原 030006
  • 收稿日期:2014-05-23 修回日期:2014-09-16 出版日期:2014-12-12 网络出版日期:2014-10-20
  • 通讯作者: 常建忠, E-mail: cjzyfx@163.com; 郑军, E-mail: zjsaas@126.com
  • 基金资助:

    本研究由山西省国际科技合作计划项目(2013081007), 山西省青年科学基金项目(2011021031-3), 山西省农业科学院科技攻关项目(2013gg30), 山西省农业科学院博士研究基金(YBSJJ1407)项目和山西省农业科学院重点项目(YZD1401)资助。

Whole-Genome Sequence Isolation, Chromosome Location and Characterization of Primary Auxin-Responsive Aux/IAA Gene Family in Aegilops tauschii

QIAO Lin-Yi1,4,**,LI Xin1,**,CHANG Zhi-Jian1,ZHANG Xiao-Jun1,ZHAN Hai-Xian1,GUO Hui-Juan1,LI Jian-Bo4,CHANG Jian-Zhong3,*,ZHENG Jun2,*   

  1. 1Institute of Crop Science, Shanxi Academy of Agricultural Sciences / Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan 030031, China; 2 Wheat Research Institute, Shanxi Academy of Agricultural Sciences, Linfen 041000, China; 3 Research Center of Dryland Farming, Shanxi Academy of Agricultural Sciences, Taiyuan 030006, China; 4Graduate School of Shanxi University, Taiyuan 030006, China
  • Received:2014-05-23 Revised:2014-09-16 Published:2014-12-12 Published online:2014-10-20
  • Contact: 常建忠, E-mail: cjzyfx@163.com; 郑军, E-mail: zjsaas@126.com

摘要:

生长素是植物生长发育过程中的关键激素之一,Aux/IAA家族基因是重要的生长素原初响应基因。通过生物信息学方法从粗山羊草(Aegilops tauschii)全基因组中分离出28个Aux/IAA基因,其中20个粗山羊草Aux/IAA蛋白具有4个保守结构域;28个Aux/IAA基因分布于全部7对染色体上,5个基因分别具有位于同一位点的已知标记。粗山羊草IAA3、IAA11和IAA26的表达具有组织特异性,分别在雌蕊、种子和根中特异表达。系统发育显示,11对粗山羊草-乌拉尔图小麦Aux/IAA蛋白、5对粗山羊草-大麦Aux/IAA蛋白直系同源。共线性分析表明,粗山羊草Aux/IAA基因与短柄草、水稻中同源基因具有很好的共线性。本研究分离的相关基因不仅可用于小麦的遗传改良,也为深入研究小麦Aux/IAA基因提供了信息。

关键词: 粗山羊草, 生长素, Aux/IAA基因家族, 染色体定位, 生物信息学

Abstract:

Auxin, as one of the most important hormones, plays a key role in many processes of plant development. The Aux/IAA family contains important early auxin response genes. A genome-wide research of Aux/IAA genes in Aegilops tauschii was carried out using bioinformatic method. In this study, 28 Aux/IAA genes were identified in Ae. tauschii, which were distributed on seven chromosomes of Ae. tauschii genome. Twenty Aux/IAA genes share four conserved amino acid sequence motifs and five were mapped on the same locus with known markers. AetIAA3, AetIAA11, and AetIAA26 were specifically expressed in pistil, seed and root of Ae. tauschii, respectively. Eleven pairs of Ae. tauschii–Triticum urartu and five pairs of Ae. tauschii–Hordeum vulgare Aux/IAA proteins were orthologous in the phylogenetic tree. Collinearity analysis indicated Aux/IAA genes showed a higher synteny between Ae. tauschii and two other species (Brachypodium distachyon and Oryza stativa). The Aux/IAA genes isolated can not only be applied in genetic improvement of common wheat but also provide basic information in further research of Aux/IAA genes in wheat.

Key words: Aegilops tauschii, Auxin, Aux/IAA gene family, Chromosome location, Bioinformatics

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