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园艺学报 ›› 2012, Vol. 39 ›› Issue (7): 1253-.

• 果树 • 上一篇    下一篇

‘短柄樱桃’花芽休眠解除过程中差异表达基因的研究

李永强,赵腮宝,倪开诚,陈文荣,辛德东,郭卫东   

  1. 浙江师范大学化学与生命科学学院,浙江金华 321004
  • 出版日期:2012-07-25 发布日期:2012-07-25

Studies on Differentially Expressed Genes in Flower Bud During DormancyRelease in Prunus pseudocerasus Lindl.‘Duanbing’

LI  Yong-Qiang, ZHAO  Sai-Bao, NI  Kai-Cheng, CHEN  Wen-Rong, XIN  De-Dong, GUO  Wei-Dong   

  1. College of Chemistry and Life Science,Zhejiang Normal University,Jinhua,Zhejiang 321004,China
  • Online:2012-07-25 Published:2012-07-25

摘要: 以中国樱桃的优良品种‘短柄樱桃’(Prunus pseudocerasus Lindl.‘Duanbing’)的花芽为材料,采用mRNA 差异显示技术,分析休眠解除的过程中相关差异表达基因。共克隆获得79 个差异cDNA片段;通过半定量RT-PCR 验证,确定18 个阳性差异cDNA 片段为休眠解除相关候选基因;休眠解除过程中上调的基因片段11 个,下调的7 个。测序及同源性比对结果显示:差异表达基因主要参与糖代谢、信号转导、跨膜转运及氧化还原等反应过程。这些基因在‘短柄樱桃’休眠解除阶段可能起到直接或间接的作用。

关键词: 中国樱桃, 休眠, 基因, mRNA 差异显示技术, 半定量RT-PCR

Abstract: The mRNA differential display technique(DDRT)was used to identify the differentially expressed cDNA fragments during chilling-induced release of dormancy in buds of Prunus pseudocerasus Lindl.‘Duanbing’. Seventy-nine differentially expressed fragments were initially identified by DDRT, and among which,18 of them were confirmed as true differentially expressed genes using semiquantitative RT-PCR. Out of these 18 differentially expressed genes,11 were up-regulated and 7 were down-regulated,respectively,during the release of dormancy. Gene ontology analysis indicated that the differentially expressed genes are mostly involved in the processes of glycometabolism , signal transduction,trans-membrane transport,and oxidation-reduction reactions. The results suggest that these genes may somehow contribute to the release of dormancy,either directly or indirectly,in Prunus pseudocerasus Lindl.‘Duanbing’.

Key words: Prunus pseudocerasus, dormancy, gene, mRNA differential display, semi-quantitative RT-PCR

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