文献类型：期刊文献

中文题名：外生菌根缓解植物酸雨胁迫的机理研究进展

英文题名：Ectomycorrhizae-induced mitigation mechanisms against the damages of acid rain on plants:A review

作者：张慰[1] 陈展[2] 邓仕槐[1] 尚鹤[2]

第一作者：张慰

机构：[1]四川农业大学资源环境学院,四川雅安625014;[2]中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京100091

年份：2012

卷号：31

期号：1

起止页码：200-206

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(30901149);中央级公益性科研院所基本科研业务费专项资金项目(CAFRIFEEP2008004)资助

语种：中文

中文关键词：外生菌根真菌;酸雨;胁迫;抗性

外文关键词：ectomycorrhizal fungi ; acid rain ; stress ; resistance.

分类号：Q945

摘要：森林作为陆地生态系统的主体,是酸雨污染的主要受体,酸雨对生态系统产生着巨大的影响。菌根是菌根真菌与植物营养根的共生体。外生菌根真菌与宿主植物间互惠互利,在森林生态系统中,外生菌根在维持生态系统的养分平衡和改善树木营养等方面有重要的作用。本文综述了国内外关于菌根和酸雨关系的研究,酸雨能抑制外生菌根的形成,降低其活力;但另一方面,外生菌根能够缓解酸雨造成的植物危害,提高植株对酸雨的耐受力。外生菌根主要通过以下几方面缓解酸雨胁迫:(1)菌根形态结构的物理屏蔽作用;(2)增加养分吸收,增加御酸能力;(3)增强酶活性,提高植物生存能力;(4)产生有机酸或其他物质。
As a main body of terrestrial ecosystem, forest is a major receptor of acid rain pollution. Acid rain has severe impact on forest ecosystem. Ectomycorrhizal fungi symbiose with plant roots, and protect their hosts against various aggressions, including that from acid rain. Many of the macrofungi form symbiotic ectomycorrhizae with forest trees, playing an important role in maintaining the nutrient balance of the trees and protecting the trees against pathogens. This paper reviewed the research advances in the relationships between mycorrhizae and acid rain. Acid rain can inhibit and reduce ectomycorrhizal formation and vitality, whereas ectomycorrhizae can alleviate the damage of acid rain to host plants and improve the hosts’ tolerance against acid rain. The ectomycorrhizae-induced mitigation mechanisms against the acid rain stress on plants are： 1） physical shielding effect of ectomycorrhizal morphological structure, 2） promoting host plant nutrient uptake and increasing host plant acid-defense capability, 3） improving host plant enzyme activities and host plant viability, and 4） secreting organic acids or other substances.