切根对栓皮栎幼苗形态特征及内源激素水平的影响

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Ruoyi Ni, Hao Dou, Shuwen Bi, Tiantian Wang, Jin’e Quan, Xitian Yang
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引用次数: 0

摘要

本研究旨在研究断根胁迫对栓皮栎根系内源激素含量及生长特性动态变化的影响,探讨内源激素在短期内调控根冠相互作用中的生理作用。采用液相色谱法结合质谱法测定了不同水平、不同发育阶段正常根(未切根,CK)和切根(切主根长度的1/3,RP)的形态特征和内源激素含量。结果表明,RP组的根系生长指标和根系内源激素均优于CK组。通过对内源激素的综合分析,发现IAA、JA、ABA和SA的串扰可以激活根的生长防御。断根处理后,栓皮栎幼苗根系生长可以通过促进侧根生长来补偿主根生长受到的抑制。补偿性侧根的生长发育有助于增加植株的总根长,从而促进水分和养分的吸收。推测植物激素可能是影响其发育的关键因素,但这不仅与单一激素含量有关,更重要的是各种激素之间的相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Root Cutting on Morphological Characteristics and Endogenous Hormone Levels of Quercus variabilis Seedlings
The objective of this study was to investigate the effects of root cutting stress on the dynamic changes of endogenous hormone content and growth characteristics of Quercus variabilis roots, and to explore the physiological role of endogenous hormones in regulating root-crown interactions in the short term. The morphological characteristics and endogenous hormone contents of normal roots (no root cutting, CK) and cut roots (cut by 1/3 of the length of the main root, RP) were determined by liquid chromatography, which was combined with mass spectrometry at different levels of different developmental stages. The results showed that the root growth indexes and root endogenous hormones in the RP group were superior to those in the CK group. Through comprehensive analysis of endogenous hormones, it was found that the crosstalk of IAA, JA, ABA and SA could activate the root growth defense. After the root cutting treatment, the root growth of Quercus variabilis seedlings could compensate for the inhibition of taproot growth by promoting lateral root growth. The growth and development of compensatory lateral roots contribute to the increase the total root length of plants, thus promoting the absorption of water and nutrients. It is speculated that plant hormones may be the key factors affecting their development, but this is not only related to the content of a single hormone, but more importantly, it is the interaction between various hormones.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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