College of Life Sciences, Northwest A&F University Yangling, China.
Front Plant Sci. 2011 Nov 1;2:74. doi: 10.3389/fpls.2011.00074. eCollection 2011.
The phytohormone auxin has been known to be a regulator of plant growth and development ever since its discovery. Recent studies on plant-pathogen interactions identify auxin as a key character in pathogenesis and plant defense. Like plants, diverse pathogens possess the capacity to synthesize indole-3-acetic acid (IAA), the major form of auxin in plants. The emerging knowledge on auxin-signaling components, auxin metabolic processes, and indole-derived phytoalexins in plant responses to pathogen invasion has provided putative mechanisms of IAA in plant susceptibility and resistance to non-gall- or tumor-inducing pathogens.
植物激素生长素自发现以来，一直被认为是植物生长和发育的调节剂。最近对植物-病原体相互作用的研究表明，生长素是发病机制和植物防御的关键特征。与植物一样，各种病原体都具有合成吲哚-3-乙酸（IAA）的能力，IAA 是植物中生长素的主要形式。生长素信号成分、生长素代谢过程和吲哚衍生的植物抗毒素在植物对非菌瘿或肿瘤诱导病原体的入侵反应中的新知识，为 IAA 在植物易感性和对非菌瘿或肿瘤诱导病原体的抗性中的作用提供了可能的机制。
