Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695, USA.
Cold Spring Harb Perspect Biol. 2021 Oct 1;13(10):a039990. doi: 10.1101/cshperspect.a039990.
Auxin is a crucial growth regulator that governs plant development and responses to environmental perturbations. It functions at the heart of many developmental processes, from embryogenesis to organ senescence, and is key to plant interactions with the environment, including responses to biotic and abiotic stimuli. As remarkable as auxin is, it does not act alone, but rather solicits the help of, or is solicited by, other endogenous signals, including the plant hormones abscisic acid, brassinosteroids, cytokinins, ethylene, gibberellic acid, jasmonates, salicylic acid, and strigolactones. The interactions between auxin and other hormones occur at multiple levels: hormones regulate one another's synthesis, transport, and/or response; hormone-specific transcriptional regulators for different pathways physically interact and/or converge on common target genes; etc. However, our understanding of this crosstalk is still fragmentary, with only a few pieces of the gigantic puzzle firmly established. In this review, we provide a glimpse into the complexity of hormone interactions that involve auxin, underscoring how patchy our current understanding is.
生长素是一种关键的生长调节剂，它控制着植物的发育和对环境干扰的反应。它在许多发育过程中起着核心作用，从胚胎发生到器官衰老，并且是植物与环境相互作用的关键，包括对生物和非生物刺激的反应。尽管生长素非常重要，但它并不是单独起作用的，而是会寻求其他内源性信号（包括植物激素脱落酸、油菜素内酯、细胞分裂素、乙烯、赤霉素、茉莉酸、水杨酸和独脚金内酯）的帮助，或者被这些信号所寻求。生长素和其他激素之间的相互作用发生在多个层次上：激素调节彼此的合成、运输和/或反应；不同途径的激素特异性转录调节剂相互作用，并/或集中在共同的靶基因上；等等。然而，我们对这种串扰的理解仍然是零碎的，只有少数几块拼图是确定无疑的。在这篇综述中，我们简要介绍了涉及生长素的激素相互作用的复杂性，强调了我们目前的理解是多么不完整。
