Host plant phylogeny and geographic distance strongly structure Betulaceae-associated ectomycorrhizal fungal communities in Chinese secondary forest ecosystems.
Host plant phylogeny and geographic distance strongly structure Betulaceae-associated ectomycorrhizal fungal communities in Chinese secondary forest ecosystems.
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DOI：
10.1093/femsec/fiz037
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发表时间：
2019-04
影响因子：
4.2
通讯作者：
Yonglong Wang;Cheng Gao;Liang Chen;Niuniu Ji;Binwei Wu;Xing-Chun Li;Pengpeng Lü;Yong Zheng
中科院分区：
文献类型：
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作者：
Yonglong Wang;Cheng Gao;Liang Chen;Niuniu Ji;Binwei Wu;Xing-Chun Li;Pengpeng Lü;Yong Zheng
环境过滤和扩散限制是生态系统中群落聚集的两个主要驱动力，但它们对与大范围白桦科分类群相关的外生菌根(EM)真菌群落的影响鲜有文献报道。本研究利用Illumina MiSeq测序技术，对中国次生林生态系统中桦木科4属23种EM真菌群落进行了研究。探讨了寄主植物系统发育、土壤、气候和地理距离对EM真菌群落的影响。总共，我们在97%的序列相似性水平上区分了1738个EM真菌操作分类单位(OTU)。赤杨EM真菌群落的OTU丰富度显著低于其他3个属。EM真菌OTU丰富度受地理距离、寄主植物系统发育、土壤和气候的显著影响。EM真菌群落组成受寄主植物系统发育(解释EM真菌群落变异的12.1%)、地理距离(7.7%)、土壤(4.6%)和气候(1.1%)的显著影响。这一发现突显了与寄主植物系统发育和扩散限制有关的环境过滤对中国次生林生态系统中桦科植物相关的EM真菌群落的强烈影响。
Environmental filtering and dispersal limitation are two of the primary drivers of community assembly in ecosystems, but their effects on ectomycorrhizal (EM) fungal communities associated with wide ranges of Betulaceae taxa at a large scale are poorly documented. In this study, we examined EM fungal communities associated with 23 species from four genera (Alnus, Betula, Carpinus and Corylus) of Betulaceae in Chinese secondary forest ecosystems, using Illumina MiSeq sequencing of the ITS2 region. Effects of host plant phylogeny, soil, climate and geographic distance on EM fungal community were explored. In total, we distinguished 1738 EM fungal operational taxonomic units (OTUs) at a 97% sequence similarity level. The EM fungal communities of Alnus had significantly lower OTU richness than those associated with the other three plant genera. The EM fungal OTU richness was significantly affected by geographic distance, host plant phylogeny, soil and climate. The EM fungal community composition was significantly influenced by host plant phylogeny (12.1% of variation explained in EM fungal community), geographic distance (7.7%), soil (4.6%) and climate (1.1%). This finding highlights that environmental filtering linked to host plant phylogeny and dispersal limitation strongly influence EM fungal communities associated with Betulaceae plants in Chinese secondary forest ecosystems.