Common mycorrhizal networks(CMNs)that connect individual plants of the same or different species together play important roles in nutrient and signal transportation,and plant community organization.However,about 10％of land plants are non-mycorrhizal species with roots that do not form any well-recognized types of mycorrhizas;and each mycorrhizal fungus can only colonize a limited number of plant species,resulting in numerous non-host plants that could not establish typical mycorrhizal sym-biosis with a specific mycorrhizal fungus.If and how non-mycorrhizal or non-host plants are able to involve in CMNs remains unclear.Here we summarize studies focusing on mycorrhizal-mediated host and non-host plant interaction.Evidence has showed that some host-supported both arbuscular mycorrhizal(AM)and ectomycorrhizal(EM)hyphae can access to non-host plant roots without forming typical mycorrhizal structures,while such non-typical mycorrhizal colonization often inhibits the growth but enhances the induced system resistance of non-host plants.Meanwhile,the host growth is also differentially affected,depending on plant and fungi species.Molecular analyses suggested that the AMF colonization to non-hosts is different from pathogenic and endophytic fungi colonization,and the hy-phae in non-host roots may be alive and have some unknown functions.Thus we propose that non-host plants are also important CMNs players.Using non-mycorrhizal model species Arabidopsis,tripartite culture system and new technologies such as nanoscale secondary ion mass spectrometry and multi-omics,to study nutrient and signal transportation between host and non-host plants via CMNs may provide new insights into the mechanisms underlying benefits of intercropping and agro-forestry sys-tems,as well as plant community establishment and stability.

Yanliang Wang;Xinhua He;Fuqiang Yu

The Germplasm Bank of Wild Species,Yunnan Key Laboratory for Fungal Diversity and Green Development,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,Yunnan,650201,China;Department of Land,Air and Water Resources,University of California at Davis,Davis,CA,95616,USA;School of Biological Sciences,University of Western Australia,Perth,WA,6009,Australia

植物多样性（英文）

[1]Yanliang Wang;Xinhua He;Fuqiang Yu-.Non-host plants:Are they mycorrhizal networks players?)[J].植物多样性（英文）,2022(02):127-134

CMNs,phae

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