Taxonomic, functional, and phylogenetic diversity of fungi in a forest-tundra ecotone in Qu?bec
Taxonomic, functional, and phylogenetic diversity of fungi in a forest-tundra ecotone in Qu?bec
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魁北克森林苔原交错带真菌的分类学、功能和系统发育多样性
DOI：
10.1016/j.polar.2020.100594
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发表时间：
2021
期刊：
影响因子：
1.8
通讯作者：
Uchida Masaki
中科院分区：
文献类型：
--
作者：
Matsuoka Shunsuke;Doi Hideyuki;Masumoto Shota;Kitagawa Ryo;Nishizawa Keita;Tanaka Kaho;Hasegawa Motohiro;Hobara Satoru;Osono Takashi;Mori Akira S.;Uchida Masaki
我们量化了加拿大魁北克亚北极地区森林苔原交错带中与死亡苔藓组织和针叶树针有关的真菌的分类学、功能和系统发育多样性。我们通过对核核糖体 DNA 的内部转录间隔区 1 (ITS1) 区域进行元条形码编码，检测到 84 个科的真菌总共 615 个可操作分类单位，序列相似度为 97%。腐生菌是占主导地位的功能群。结果表明寄主植物种类和当地环境异质性对寒地真菌多样性的影响。苔藓中真菌群落的分类学和系统发育多样性指数显着高于针叶树。苔藓中更大的系统发育多样性主要归因于毛霉菌门中科的存在，而针叶树中存在相对密切相关的 Dikarya 科。分类多样性还与植被和土壤性质的局部变化有关，这表明植被的局部殖民和建立以及土壤的随之发展有助于真菌的分类多样性。相比之下，功能多样性并未受到寄主、植被或土壤性质的显着影响，表明真菌群落成员在评估的功能性状方面相对冗余。
We quantified the taxonomic, functional, and phylogenetic diversity of fungi associated with dead moss tissues and conifer needles in a forest-tundra ecotone in a sub-Arctic region, Quebec, Canada. We detected 615 operational taxonomic units, in total, of fungi in 84 families with 97% sequence similarity by metabarcoding the internal transcribed spacer 1 (ITS1) region of nuclear ribosomal DNA. Saprotrophs were the dominant functional guild. The results indicated the effects of host plant species and local environmental heterogeneity on fungal diversity in the cold region. Taxonomic and phylogenetic diversity indices of fungal communities were significantly greater in moss than in conifers. The greater phylogenetic diversity in moss was mainly attributable to the presence of families in Mucoromycota, compared to those in conifers, in which relatively closely related families of Dikarya were present. The taxonomic diversity was also related to local variations in vegetation and soil properties, suggesting that the local colonization and establishment of vegetation and the concomitant development of soil contributed to the taxonomic diversity of fungi. In contrast, functional diversity was not significantly affected by the host, vegetation, or soil properties, indicating that the fungal community members were relatively redundant in terms of the evaluated functional traits.