地对空信号的地对空信号
1Gene Expression Laboratory, Ecology Institute, University of Lausanne, Switzerland. edwardelliston.farmer@ie-bpv.unil.ch
Nature
|July 19, 2001
概括
植物从叶子中释放挥发性化合物,以调节基因表达和防御. 这些空中传递的信号可以阻止食草动物,吸引捕食者,并可能调解植物内部和植物之间的长距离通信.
科学领域:
- 植物生物学 植物生物学
- 化学生态化学生态学
- 分子生物学分子生物学
背景情况:
- 挥发性有机化合物 (VOC) 是生物系统中空气中的关键信号.
- 植物对包括叶子在内的各种组织中产生和释放VOC的复杂控制.
- 这些植物排放的挥发性物质在花和水果香味之外发挥作用,影响防御和发展.
研究的目的:
- 探索植物衍生的挥发性信号的多方面的作用.
- 研究挥发性物质在植物对草食动物的防御机制中的参与.
- 检查挥发性物质在调节基因表达和调解植物内部和植物间通信方面的潜力.
主要方法:
- 从植物组织中排放挥发性有机化合物的分析.
- 关于植物-食草动物相互作用和相关挥发性物质释放的研究.
- 对挥发性线索的反应中的基因表达分析.
- 研究涉及挥发性化合物的信号通路.
主要成果:
- 植物从植物组织中释放复杂的挥发性物质束,特别是压力下的叶子.
- 草食动物的攻击会触发特定的挥发性排放,可以阻止草食动物或吸引自然敌人.
- 植物挥发物会影响与防御和发育有关的基因表达.
- 有证据表明,挥发性物质可能作为植物内部和植物之间的长距离信号.
结论:
- 植物挥发物是基因表达和生态相互作用的强有力的调节剂.
- 植物中挥发物介导的通信扩展到防御,发展和潜在的远程信号传输.
- 需要进一步的研究,以充分阐明植物中挥发性信号的机制和范围.
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