外生菌根共生对林木氮素吸收的促进作用

编号 lyqk009494

中文标题 外生菌根共生对林木氮素吸收的促进作用

作者 王倩  李振双  杨富成  梁俊峰  陆俊锟 

作者单位 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

期刊名称 世界林业研究 

年份 2021 

卷号 34

期号 3

栏目名称 专题论述 

中文摘要 外生菌根真菌能与某些树木形成稳定的菌植共生体——外生菌根。外生菌根能吸收土壤中植物难以吸收的无机或有机形式营养物质，并传递至宿主植物为其所利用。由于这种养分传递的生态重要性，外生菌根真菌介导的“菌植”N传递关系受到研究人员的广泛关注。文中综述了外生菌根真菌的可利用N形式及其促进宿主植物N营养吸收的机理，主要归纳为：1）菌根增加了养分吸收面积，促进N吸收；2）外生菌根真菌编码利用N源所必需的一套酶和转运体，协助宿主对难吸收的硝酸盐和有机N的利用。在全球N沉降日益加剧的背景下，本综述将有助于了解外生菌根在当前和未来气候情景下的生态作用。

关键词 外生菌根真菌  氮营养  宿主植物 

基金项目 中央级公益性科研院所基本科研业务费专项基金“南方珍贵用材树种多重‘菌植’共生体的形成与作用机制”（CAFYBB2017ZB001）；国家自然科学基金“珍贵用材树种生理特性基础研究”（31722012）

英文标题 Nitrogen Uptake Promoting Mechanism of Trees in Ectomycorrhizal Symbioses

作者英文名 Wang Qian, Li Zhenshuang, Yang Fucheng, Liang Junfeng, Lu Junkun

单位英文名 Research Institute of Tropical Forestry, Chinese Academy of Forestry; Key Laboratory of National Forestry and Grassland Administration on Tropical Forestry Research, Guangzhou 510520, China

英文摘要 Ectomycorrhizal fungi can form a stable symbiont with certain trees, namely ectomycorrhiza. Ectomycorrhiza can absorb nutrients in inorganic or organic form in the soil that are hard to be absorbed by plants and transfer them to the host plants. Due to the ecological importance of this nutrient delivery, it is necessary to better understand the relationship of nitrogen delivery between fungi in ectomycorrhizal symbioses and host plants. This paper reviews the available nitrogen forms of ectomycorrhizal fungi and their mechanisms for promoting nitrogen uptake by host plants, which are summarized as follows: 1) Mycorrhizal colonization increases plant root nutrient uptake area and promotes N uptake; and 2) Ectomycorrhizal fungi encode a set of enzymes and transporters necessary for N source to assist the host plant in absorbing hard-to-use nitrate and organic nitrogen. This review can help better understand the ecological effects of ectomycorrhizal symbiosis in current and future climate scenarios under the background of increasing global nitrogen deposition.

英文关键词 Ectomycorrhizal fungi;nitrogen;host plant

起始页码 19

截止页码 24

投稿时间 2020/10/15

最后修改时间 2020/12/23

作者简介 王倩，女，硕士研究生，研究方向为林木微生物资源利用，E-mail：qianwang117@163.com

通讯作者介绍 陆俊锟，男，研究员，研究方向为林木营养与微生物应用，E-mail：junkunlu@caf.ac.cn

E-mail qianwang117@163.com;junkunlu@caf.ac.cn

分类号 S718.43

DOI 10.13348/j.cnki.sjlyyj.2020.0133.y

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发布日期 2020-12-28

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