马宗桓;陈佰鸿;李文芳;毛娟;

• 1:甘肃农业大学园艺学院

摘要(Abstract)：

【目的】通过分析葡萄(Vitis vinifera L.)PYL基因在非生物胁迫条件下的响应情况,丰富PYR/PYL/RCAR(Pyrabactin Resistance/Pyr1-Like/Regulatory Components of ABA Receptor)在ABA信号和启动信号转导中的功能。【方法】利用生物信息学方法,筛选葡萄中的PYL基因,并对其进行生物信息学及非生物胁迫下的响应分析。【结果】从葡萄基因组中共鉴定出6个PYL基因,Vv PYL家族无染色体偏好性,Vv PYL5无内含子结构;除Vv PYL4外均富含酸性氨基酸,该家族成员主要定位于细胞质中,并有多个保守位点。10%(ω)PEG和100μmol·L^(-1)ABA处理6 h后,Vv PYL1和Vv PYL2表达水平与对照相比差异显著,分别为对照的1.3(-1)ABA处理6 h后,Vv PYL1和Vv PYL2表达水平与对照相比差异显著,分别为对照的1.3¹.8倍。50μmol·L1.8倍。50μmol·L^(-1)ABA处理6 h后,Vv PYL1表达水平与对照差异显著,为对照的1.5倍;400 mmol·L(-1)ABA处理6 h后,Vv PYL1表达水平与对照差异显著,为对照的1.5倍;400 mmol·L^(-1)Na Cl、10%PEG、50μmol·L(-1)Na Cl、10%PEG、50μmol·L^(-1)ABA和100μmol·L(-1)ABA和100μmol·L^(-1)ABA处理24 h后,Vv PYL1和Vv PYL2的表达水平显著高于对照,为对照的1.2(-1)ABA处理24 h后,Vv PYL1和Vv PYL2的表达水平显著高于对照,为对照的1.2².2倍,400 mmol·L2.2倍,400 mmol·L^(-1)Na Cl处理24 h后,Vv PYL6的表达水平显著高于对照,为对照的1.6倍。【结论】克隆得到葡萄的6个PYL基因,高度保守,分为3个亚组;能够响应不同非生物胁迫。本研究为葡萄PYL基因在逆境应答中的功能研究提供了基础。

关键词(KeyWords)： 葡萄;PYR/PYL/RCAR家族;生物信息学;实时荧光定量PCR

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31460500)

作者(Authors): 马宗桓;陈佰鸿;李文芳;毛娟;

DOI: 10.13925/j.cnki.gsxb.20170413

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