Ectomycorrhizal fungal communities associated with Larix gemelinii Rupr. in the Great Khingan Mountains, China

PeerJ

article

Yonglong Wang¹  Yanling Zhao¹  Ying Xu¹  Jianjun Ma²  Busayo Joshua Babalola³  Yongjun Fan¹ 

[1] Faculty of Biological Science and Technology, Baotou Teacher’s College;College of Life Science, Langfang Normal University;State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences

关键词: Fungal diversity;    Lineage composition;    Community assembly;    Mean annualtemperature;    Geographic distance;    Fungal occurrence;   

DOI  :  10.7717/peerj.11230

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Larix gemelinii is an important tree species in the Great Khingan Mountains in Northeast China with a high economic and ecological value for its role in carbon sequestration and as a source of lumber and nuts. However, the ectomycorrhizal (EM) fungal diversity and community composition of this tree remain largely undefined. We examined EM fungal communities associated with L. gemelinii from three sites in the Great Khingan Mountains using Illumina Miseq to sequence the rDNA ITS2 region and evaluated the impact of spatial, soil, and climatic variables on the EM fungal community. A total of 122 EM fungal operational taxonomic units (OTUs) were identified from 21 pooled-root samples, and the dominant EM fungal lineages were /tricholoma, /tomentella-thelephora, /suillus-rhizopogon, and /piloderma. A high proportion of unique EM fungal OTUs were present; some abundant OTUs largely restricted to specific sites. EM fungal richness and community assembly were significantly correlated with spatial distance and climatic and soil variables, with mean annual temperature being the most important predictor for fungal richness and geographic distance as the largest determinant for community turnover. Our findings indicate that L. gemelinii has a rich and distinctive EM fungal community contributing to our understanding of the montane EM fungal community structure from the perspective of a single host plant that has not been previously reported.

【 授权许可】

CC BY