Influence of Citrus Scion/Rootstock Genotypes on Arbuscular Mycorrhizal Community Composition under Controlled Environment Condition
文献类型： 外文期刊
作者： Song, Fang 1 ; Bai, Fuxi 1 ; Wang, Juanjuan 2 ; Wu, Liming 1 ; Jiang, Yingchun 1 ; Pan, Zhiyong 3 ;
作者机构： 1.Hubei Acad Agr Sci, Inst Fruit & Tea, Wuhan 430064, Peoples R China
2.Minist Agr, Inst Natl Agrotech Extens & Serv Ctr NATESC, Beijing 100000, Peoples R China
3.Huazhong Agr Univ, Coll Hort & Forestry Sci, Wuhan 430070, Peoples R China
关键词： AMF community composition; citrus; scion; rootstock genotype; Illumina Miseq sequencing; PCoA
期刊名称：PLANTS-BASEL （ 影响因子：3.935； ）
ISSN：
年卷期： 2020 年 9 卷 7 期
页码：
收录情况： SCI
摘要： Citrus is vegetatively propagated by grafting for commercial production, and most rootstock cultivars of citrus have scarce root hairs, thus heavily relying on mutualistic symbiosis with arbuscular mycorrhizal fungi (AMF) for mineral nutrient uptake. However, the AMF community composition, and its differences under different citrus scion/rootstock genotypes, were largely unknown. In this study, we investigated the citrus root-associated AMF diversity and richness, and assessed the influence of citrus scion/rootstock genotypes on the AMF community composition in a controlled condition, in order to exclude interferences from environmental factors and agricultural practices. As a result, a total of 613,408 Glomeromycota tags were detected in the citrus roots, and 46 AMF species were annotated against the MAARJAM database. Of these, 39 species belonged toGlomus, indicating a dominant role of theGlomusAMF in the symbiosis with citrus. PCoA analysis indicated that the AMF community's composition was significantly impacted by both citrus scion and rootstock genotypes, but total samples were clustered according to rootstock genotype rather than scion genotype. In addition, AMF alpha diversity was significantly affected merely by rootstock genotype. Thus, rootstock genotype might exert a greater impact on the AMF community than scion genotype. Taken together, this study provides a comprehensive insight into the AMF community in juvenile citrus plants, and reveals the important effects of citrus genotype on AMF community composition.
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