生长中的玉米根内的内源脱落酸：光照效应

Endogenous ABA in Growing Maize Roots: Light Effects.

作者信息

Saugy M, Mayor G, Pilet P E

机构信息

Institute of Plant Biology and Physiology of the University, Batiment de Biologie, 1015 Lausanne, Switzerland.

出版信息

Plant Physiol. 1989 Feb;89(2):622-7. doi: 10.1104/pp.89.2.622.

DOI:10.1104/pp.89.2.622

PMID:16666592

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1055891/

Abstract

The growth of intact maize (Zea mays L.) roots and the abscisic acid (ABA) content (measured by gas chromatography-mass spectrometry of the root tip were analyzed after a white-light treatment. The decrease of the elongation rate due to the illumination corresponded to a concomitant increase in the ABA found in the root. When selecting roots, on the basis of their growth rate, it was possible to show that the relation between growth and ABA content, previously reported in darkness was conserved after light treatments. Therefore, light decreased the root growth rate while it simultaneously increased the ABA content in the roots. This increase was higher than expected, demonstrating the complexity of the involvement of ABA on root growth.

摘要

对完整玉米（Zea mays L.）根系生长及脱落酸（ABA）含量（通过对根尖进行气相色谱 - 质谱分析测定）进行白光处理后分析。光照导致的伸长率降低与根中ABA含量的相应增加相对应。当根据根的生长速率选择根系时，可以表明先前在黑暗中报道的生长与ABA含量之间的关系在光照处理后仍然存在。因此，光照降低了根的生长速率，同时增加了根中ABA的含量。这种增加高于预期，表明ABA参与根生长的复杂性。