文献类型：期刊文献

中文题名：干旱胁迫影响下的植物个体响应与种间关系变化——以寄生植物为例

英文题名：Individual Plant Response and Interspecific Relationship Changes Under Drought Stress:Exemplified by Parasitic Plants

作者：余俊瑞[1] 杨富成[1] 覃方锉[1] 孟森[1] 陆俊锟[1]

第一作者：余俊瑞

机构：[1]中国林业科学研究院热带林业研究所/热带林业研究国家林业和草原局重点实验室,广州510520

年份：2025

卷号：38

期号：2

起止页码：9-16

中文期刊名：世界林业研究

外文期刊名：World Forestry Research

收录：;北大核心:【北大核心2023】；

基金：中国林科院基本科研业务费专项资金项目“檀香—降香黄檀寄生体系响应干旱胁迫的生理生态机制”(CAFYBB2024QG006);国家自然科学基金“珍贵用材树种生理特性基础研究”(31722012)。

语种：中文

中文关键词：干旱胁迫;植物干旱响应;种间关系;寄生植物;寄主植物

外文关键词：drought stress;plant drought response;interspecific relationship;parasitic plant;host plant

分类号：S718.43;S718.521.2

摘要：随着全球升温进程持续,影响水分循环和降雨格局,日益频发的干旱事件将成为植物面临的主要胁迫。干旱导致的水分短缺严重影响植物的生长发育,容易引起植物个体衰退甚至死亡。深入解析干旱影响后果以及植物的响应机制,是理解和预测不同植物类群变化的关键科学问题。寄生植物是借助寄生器官从寄主植物中获取水分和营养物质的特殊类群。由于形成具有物理连接的共同体,干旱胁迫既会引起各自的个体调控响应,也会改变两者的种间关系,其中的具体过程与生理意义值得进一步挖掘。此外,寄生植物类群中同时存在危害农林业生产的物种以及具有优良利用价值的物种,因此对该类群的干旱响应研究有助于开展针对性的防治或培育工作。文中主要介绍干旱胁迫对植物个体的水力光合系统、生理生化过程、形态结构等多方面的影响及其相关的响应过程,以及植物种间相互作用中促进效应和竞争效应对干旱胁迫的不同调节机制;重点阐述干旱胁迫影响下寄生关系的各种变化过程,包括寄生植物对干旱胁迫负面效应的放大以及干旱胁迫下寄主状况的改善2种情况,以期为加深干旱影响背景下的寄生植物生理过程和种间关系研究提供参考。
As the water cycle and rainfall patterns have been affected by the continuing global warming,the frequent drought events will become a major stress challenging plant communities.Drought-induced water scarcity severely affects plant growth and development,and can easily cause individual plant decline or even death.In-depth analysis of the consequences of drought impacts and the response mechanisms of plants is a key scientific issue for understanding and predicting changes in different plant groups.Parasitic plants are special groups that use their haustorium to extract water and nutrients from host plants.Due to the formation of a physically connected system,drought stress can trigger individual regulatory responses and change interspecific interactions between the parasitic and host plants.Therefor,it is worthwhile to further explore the specific processes and physiological significance.Additionally,parasitic plant groups include both the species that are harmful to agricultural and forestry production and the species that have excellent utilization value,so the study of the drought response of this group is conducive to targeted their control or cultivation.This paper mainly introduces the effects of drought stress on the hydrological and photosynthetic systems,physiological and biochemical processes,morphology and structure of individual plants and their response strategies,and also examines the different regulation mechanisms against drought stress by the facilitative and competitive effects in interspecific interactions of plants.The focus is put on the changes in parasitism relationship under drought stress,including the amplification of the negative effects of drought stress and the improvement of the host condition under drought stress.This paper intends to provide a reference for deepening the study of physiological processes and interspecific relationships of parasitic plants under drought impacts.