编程细胞死亡,线粒体和植物过敏反应.
1Biotechnology Center for Agriculture and the Environment, Rutgers University, New Brunswick, New Jersey 08901-8520, USA. Lam@aesop.rutgers.edu
Nature
|July 19, 2001
概括
植物利用编程细胞死亡 (PCD) 通过过敏反应对抗微生物病原体. 虽然动物使用线粒体来调节PCD,但植物可能使用不同的分子调节剂,因为许多已知的动物调节剂在Arabidopsis中缺席.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 植物表现出过敏反应 (HR),包括在感染部位的快速细胞死亡,以限制病原体的生长.
- 这种HR是一种编程细胞死亡 (PCD) 的形式,是跨王国保存的过程.
- 线粒体在动物中启动PCD途径中起着关键作用,新出现的证据表明植物中也有类似的参与.
研究的目的:
- 在植物病原体相互作用中研究编程细胞死亡 (PCD) 的保存调节机制.
- 将植物PCD的分子调节剂与动物系统中发现的分子调节剂进行比较.
- 为了确定PCD的潜在植物特异性调节剂.
主要方法:
- 药理学研究研究细胞应激反应.
- 分子研究分析基因表达和蛋白质功能.
- 比较基因组学以确定植物和动物之间的保存和分离的细胞死亡调节剂.
主要成果:
- 证据表明,在植物和动物中,病原体反应和PCD激活的基本调节机制得到保护.
- 线粒体似乎参与调节植物中的PCD,类似于它们在动物中的作用.
- 许多特征性的动物细胞死亡调节器在Arabidopsis基因组中不存在.
结论:
- 植物和动物在病原体攻击期间共享一些编程细胞死亡 (PCD) 调节的基本机制.
- 线粒体很可能参与植物PCD.
- 与动物相比,Arabidopsis利用了与动物相比的PCD不同的分子调节剂,突出了植物特异性适应.
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