干旱胁迫响应中的调控代谢网络。

Regulatory metabolic networks in drought stress responses.

作者信息

Seki Motoaki, Umezawa Taishi, Urano Kaoru, Shinozaki Kazuo

机构信息

Plant Genomic Network Research Team, Plant Functional Genomics Research Group, RIKEN Plant Science Center (PSC), RIKEN Yokohama Institute, Yokohama 230-0045, Japan.

出版信息

Curr Opin Plant Biol. 2007 Jun;10(3):296-302. doi: 10.1016/j.pbi.2007.04.014. Epub 2007 Apr 30.

DOI:10.1016/j.pbi.2007.04.014

PMID:17468040

Abstract

Plants must adapt to drought stress to survive. The phytohormone abscisic acid (ABA) is produced under drought stress conditions and is essential for the response to drought stress. The ABA level plays an important role in the response, and several enzymes for ABA biosynthesis and catabolism have been identified. Physiological studies have shown that several metabolites accumulate and function as osmolytes under drought stress conditions. Many drought-inducible genes with various functions have been identified, and transgenic plants that harbor these genes have shown increased tolerance to drought.

摘要

植物必须适应干旱胁迫才能生存。植物激素脱落酸（ABA）在干旱胁迫条件下产生，对干旱胁迫响应至关重要。ABA水平在该响应中起重要作用，并且已鉴定出几种参与ABA生物合成和分解代谢的酶。生理学研究表明，在干旱胁迫条件下，几种代谢产物会积累并作为渗透调节剂发挥作用。已鉴定出许多具有各种功能的干旱诱导基因，携带这些基因的转基因植物对干旱的耐受性有所提高。