水保所知识产出(1956---)知识库

丛枝菌根(AM)是球囊菌门(Glomeromycota)真菌与植物根系形成的互惠共生体。AM真菌与植物之间的
养分转运、代谢、利用与调控是两者建立共生体的基础, 也是两者互惠互利的重要生理机制。关于菌根共生
体中碳氮养分转运与代谢特点已有较多报道, 而关于丛枝菌根养分转运、代谢、利用与调控研究最新进展尚
缺乏全面、系统的论述。本文旨在介绍AM真菌与寄主植物间养分交换的种类与时空特征的基础上, 探讨AM
共生体的养分转运、代谢和利用特点及其调控机制; 分析当前研究存在的主要问题与研究动向和展望, 以期为
加强该领域研究、阐明AM真菌与寄主植物共生的生理机制, 为生物共生学研究和发展提供可借鉴的思路。

Arbuscular mycorrhizas (AM) are mutualistic associations between Glomeromycota fungi and host
plant roots. The processes involving transportation, metabolism, utilization and regulation of both inorganic and
organic nutrients are the foundation of the symbionts, which are the critical physiological mechanisms of the
mutual relationship between the AM fungi and host plants. The characteristics of the transportation and metabo-
lism of nitrogen or carbon have been well documented in the literature. However, the latest progress on compre-
hensive and systematic review in relation to the studies of nutrient transfer, metabolism, utilization and regula-
tion in AM associations remain unavailable. This review aims to introduce the nutrient-exchange forms and
spatiotemporal characteristics between AM fungi and host plants, and summarize the characteristics of nutrient
transport, metabolism and utilization and their regulatory mechanism in AM associations. The advances and
prospects of the studies in this research topic are discussed. This study may enhance our understanding of the
physiological mechanisms of the mutualisms between AM fungi and host plants, and promote future study in
this research area.