Institute of Science and Technology Austria (ISTA), 3400, Klosterneuburg, Austria.
Institute of Science and Technology Austria (ISTA), 3400, Klosterneuburg, Austria.
Curr Opin Plant Biol. 2023 Oct;75:102443. doi: 10.1016/j.pbi.2023.102443. Epub 2023 Sep 2.
To respond to auxin, the chief orchestrator of their multicellularity, plants evolved multiple receptor systems and signal transduction cascades. Despite decades of research, however, we are still lacking a satisfactory synthesis of various auxin signaling mechanisms. The chief discrepancy and historical controversy of the field is that of rapid and slow auxin effects on plant physiology and development. How is it possible that ions begin to trickle across the plasma membrane as soon as auxin enters the cell, even though the best-characterized transcriptional auxin pathway can take effect only after tens of minutes? Recently, unexpected progress has been made in understanding this and other unknowns of auxin signaling. We provide a perspective on these exciting developments and concepts whose general applicability might have ramifications beyond auxin signaling.
为了响应生长素这一细胞多型性的主要调控者，植物进化出了多种受体系统和信号转导级联。然而，尽管经过了几十年的研究，我们仍然缺乏对各种生长素信号机制的令人满意的综合理解。该领域的主要差异和历史争议在于生长素对植物生理学和发育的快速和缓慢作用。尽管经过几十年的研究，生长素进入细胞后，离子就开始跨膜流动，但是，最好描述的转录生长素途径只能在几十分钟后才生效，这怎么可能呢？最近，在理解这一点和生长素信号的其他未知方面取得了意想不到的进展。我们提供了对这些令人兴奋的发展和概念的看法，其普遍适用性可能超出了生长素信号的范围。
