西西里岛马多尼山自然环境中与黑毛黄芪有关的真菌群的形态和分子研究

Francesco Venice, P. Colasuonno, E. Lombardo, E. Lumini, V. Bianciotto, M. Gargano, G. Venturella, G. Domina, A. Mello
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引用次数: 1

摘要

摘要虽然黄芪具有重要的生态作用,但与该物种相关的菌根真菌从未在自然生境中进行过研究。考虑到嗜真菌性灌木物种对土壤微生物群的积极影响,我们的目的是在自然生境中检测黑桫椤根系中丛枝菌根真菌(AMF)的存在和发生,并筛选周围土壤中真菌的多样性。形态分析是进行A nebrodensis根样本Madonie山脉(西西里、意大利),进行了高通量测序在A nebrodensis根和土壤有关。对黑荆根的观察显示出典型的AMF结构。测序结果显示,根和土壤样品中子囊菌门含量最多,担子菌门次之,毛霉门次之。与土壤相比,荆芥根系真菌群落丰富度较低,特定类群的丰富度在根系和土壤之间存在差异。本文首次报道了在自然生境中发现的内菌根共生现象。两种基质(土壤和根)之间的真菌多样性支持了一种专门的和完善的根微生物组的概念,使其能够在恶劣环境的压力条件下生存。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
First morphological and molecular investigation of the mycobiota associated with Astragalus nebrodensis in its natural environment (Madonie mountains, Sicily)
Abstract Although Astragalus nebrodensis plays a fundamental ecological role, mycorrhizal fungi associated with this species have never been investigated in natural habitats. Our aim was to check the presence and occurrence of Arbuscular Mycorrhizal Fungi (AMF) in roots of A. nebrodensis in a natural habitat and to screen the fungal diversity in the surrounding soil, considering the positive influence of mycotrophic shrub species on soil microbiota. A morphological analysis was performed on A. nebrodensis roots samples from the Madonie mountains (Sicily, Italy), while high-throughput-sequencing was carried out in A. nebrodensis roots and in the associated soil. Observations of A. nebrodensis roots revealed typical structures of AMF. Sequencing revealed that Ascomycota was the most abundant phylum in both roots and soil samples, followed by Basidiomycota and Mucoromycota. A. nebrodensis roots host a fungal community with lower richness as compared to soil and specific taxa were differentially abundant between roots and soil. The endomycorrhizal symbiosis in A. nebrodensis from a natural habitat is reported here for the first time. The fungal diversity between the two matrices (soil vs roots) supports the notion of a specialised and well-established root microbiome in A. nebrodensis enabling it to survive the stressful conditions of its harsh environment.
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