生长素：植物发育变化的触发因素。

Auxin: a trigger for change in plant development.

作者信息

Vanneste Steffen, Friml Jirí

机构信息

Department of Plant Systems Biology, VIB, Ghent University, Gent, Belgium.

出版信息

Cell. 2009 Mar 20;136(6):1005-16. doi: 10.1016/j.cell.2009.03.001.

DOI:10.1016/j.cell.2009.03.001

PMID:19303845

Abstract

The dynamic, differential distribution of the hormone auxin within plant tissues controls an impressive variety of developmental processes, which tailor plant growth and morphology to environmental conditions. Various environmental and endogenous signals can be integrated into changes in auxin distribution through their effects on local auxin biosynthesis and intercellular auxin transport. Individual cells interpret auxin largely by a nuclear signaling pathway that involves the F box protein TIR1 acting as an auxin receptor. Auxin-dependent TIR1 activity leads to ubiquitination-based degradation of transcriptional repressors and complex transcriptional reprogramming. Thus, auxin appears to be a versatile trigger of preprogrammed developmental changes in plant cells.

摘要

植物组织内生长素的动态、差异分布控制着各种各样令人印象深刻的发育过程，这些过程使植物的生长和形态适应环境条件。各种环境和内源信号可通过影响局部生长素生物合成和细胞间生长素运输，整合到生长素分布的变化中。单个细胞主要通过一种核信号通路来解读生长素，该通路涉及作为生长素受体的F盒蛋白TIR1。生长素依赖的TIR1活性导致转录抑制因子基于泛素化的降解和复杂的转录重编程。因此，生长素似乎是植物细胞中预编程发育变化的一种通用触发因素。