在Arabidopsis中,APL调节了血管组织的身份
Martin Bonke1, Siripong Thitamadee, Ari Pekka Mähönen
1Plant Molecular Biology Laboratory, Institute of Biotechnology, POB 56, FIN-00014, University of Helsinki, Finland.
Nature
|November 14, 2003
概括
研究人员确定了ALTERED PHLOEM DEVELOPMENT (APL) 基因,该基因对Arabidopsis.的花身份至关重要. 这种基因促进了叶膜分化,同时抑制了叶膜发育,澄清了血管组织的模式.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 发育生物学是发展生物学.
背景情况:
- 血管植物利用花和树进行长距离的运输.
- 体由体元素和伴侣细胞组成;体包括化气管元素.
- 体-体模式的遗传控制在很大程度上是未知的.
研究的目的:
- 为了识别控制Arabidopsis中体-体模式的基因.
- 为了阐明ALTERED PHLOEM DEVELOPMENT (APL) 基因的功能.
主要方法:
- 对Arabidopsis突变种的遗传分析.
- APL的基因表达概况.
- 对子宫外APL表达的分析.
主要成果:
- 改变花发育 (APL) 基因对于花身份至关重要.
- 一个衰退的APL突变破坏了花发育,导致花位置的体样细胞.
- APL的表达局部化到发育中的叶囊.
- 宫外APL表达抑制了树皮细胞的发育.
结论:
- APL充当调节血管发育的MYB转录因子.
- APL促进了体分化,抑制了体分化.
- 在建立体-体模式方面,APL起着双重作用.
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