School of Plant Science, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia.
Physiol Plant. 2011 Apr;141(4):299-309. doi: 10.1111/j.1399-3054.2011.01444.x. Epub 2011 Feb 6.
Models describing plant hormone interactions are often complex and web-like. Here we assess several suggested interactions within one experimental system, elongating pea internodes. Results from this system indicate that at least some suggested interactions between auxin, gibberellins (GAs), brassinosteroids (BRs), abscisic acid (ABA) and ethylene do not occur in this system or occur in the reverse direction to that suggested. Furthermore, some of the interactions are relatively weak and may be of little physiological relevance. This is especially true if plant hormones are assumed to show a log-linear response curve as many empirical results suggest. Although there is strong evidence to support some interactions between hormones (e.g. auxin stimulating ethylene and bioactive GA levels), at least some of the web-like complexities do not appear to be justified or are overstated. Simpler and more targeted models may be developed by dissecting out key interactions with major physiological effects.
描述植物激素相互作用的模型通常较为复杂，呈网状。在这里，我们评估了一个实验系统中几种被提议的相互作用，该系统可使豌豆节间伸长。该系统的结果表明，至少有一些在生长素、赤霉素（GA）、油菜素内酯（BR）、脱落酸（ABA）和乙烯之间被提议的相互作用在该系统中并未发生，或者与所提议的方向相反。此外，一些相互作用相对较弱，可能对生理相关性不大。如果像许多经验结果所表明的那样，植物激素的表现出对数线性响应曲线，那么这一点尤其正确。尽管有强有力的证据支持激素之间的某些相互作用（例如，生长素刺激乙烯和生物活性 GA 水平），但至少一些网状复杂性似乎没有得到证实或被夸大了。通过分离出具有主要生理效应的关键相互作用，可以开发出更简单和更有针对性的模型。
