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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (13): 267-271.

• 林学 园艺 园林 • 上一篇    下一篇

MicroRNA参与植物花发育调控的研究进展

侍婷 高志红 章 镇 庄维兵   

  • 收稿日期:2010-02-05 修回日期:2010-03-25 出版日期:2010-07-05 发布日期:2010-07-05
  • 基金资助:

    国家自然科学基金

Flower Development Contolled by MicroRNA

  • Received:2010-02-05 Revised:2010-03-25 Online:2010-07-05 Published:2010-07-05

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摘要：

摘 要：MicroRNA(miRNA)是一类20到24nt的非编码小RNA，通过与靶mRNA序列的互补配对产生特异性，抑制了mRNA的表达或使其降解，从而调控靶基因的表达。本文主要综述了三类调控开花时间的miRNA家族成员：miR172，miR159 / miR319和miR156。其中，miR156主要调控植物生长周期转变；miR172通过调控AP2类基因，控制开花时间和花器官的形成；miR159和miR319的过量表达均会引起一些花发育障碍，如花期延迟。此外，还介绍了其它一些与花发育相关的miRNA，并对miRNA在花形成和发育中的研究方向进行了展望。

关键词: 天津, 天津, 农业高校, 沿海都市型现代农业, 路径

Abstract:

Abstract：MicroRNAs are 20 to 24 nt, small noncoding RNAs. Specificity is provided by base pairing of the miRNA to miRNA target sequence, leading to translational repression or degradation of mRNA. Three miRNA families (miR172, miR159/miR319 and miR156) involved in flowering time regulation has recently been reviewed. miR156 is a master regulator in the phase changing from vegetative phase to reproductive phase; miR172 is involved in the regulation of ?owering time and ?oral organ identity in Arabidopsis thaliana through regulation of expression of APETALA2 (AP2)-like genes. The over expression of miR319 and miR159 results in several developmental defects, included a delay in flowering. In addition, we demonstrate some other miRNAs related to floral development. Finally, some perspectives are discussed.