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Qian, Ximei; El-Ashker, A.; Kottke, Ingrid; Oberwinkler, Franz

doi:10.1023/a:1004276121413

Cited by 8 publications

(1 citation statement)

References 17 publications

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“…The most abundant species was Oidiodendron maius in the phylum Ascomycota, which is known both as a root symbiont of Ericaceae (e.g., on Vaccinium myrtillus L. and Calluna vulgaris (L.) Hull), and as an endophyte of non-ericaceous woody plants such as Betula, Picea and Abies in boreal forests [68]. Interestingly, Oidiodendron maius enhanced the plant growth of Betula pendula [69] and was found to inhibit in vitro Heterobasidium annosum [70], a well-known root pathogen of B. aetnensis [10]. Other Helotiales ERM fungi detected in B. aetnensis were Meliniomyces, Gyoerffyella, and Acephala.…”

Section: Discussionmentioning

confidence: 99%

The Root Mycobiota of Betula aetnensis Raf., an Endemic Tree Species Colonizing the Lavas of Mt. Etna (Italy)

Badalamenti

Catania

Sofia

et al. 2021

Forests

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Betula aetnensis is an endemic tree of high conservation value, which thrives on the nutrient-poor volcanic soils of Mount Etna. Since plant–microbe interactions could play a crucial role in plant growth, resource uptake, and resistance to abiotic stresses, we aimed to characterize the root and rhizosphere microbial communities. Individuals from natural habitat (NAT) and forest nursery (NURS) were surveyed through microscopy observations and molecular tools: bacterial and fungal automated ribosomal intergenic spacer analysis (ARISA), fungal denaturing gradient gel electrophoresis (DGGE). B. aetnensis was found to be simultaneously colonized by arbuscular (AM), ectomycorrhizal (ECM), ericoid (ERM) fungi, and dark septate endophytes (DSE). A high diversity of the bacterial community was observed whilst the root fungal assemblage of NAT plants was richer than that of NURS. Root and rhizosphere fungal communities from NAT plants were characterized by Illumina MiSeq sequencing. Most of the identified sequences were affiliated to Helotiales, Pezizales, and Malasseziales. Ascomycota and Basidiomycota dominated roots and rhizosphere but differed in community structure and composition. ECM in the roots mainly belonged to Tylospora and Leccinum, while Rhizopogon was abundant in the rhizosphere. The Helotiales, including ERM (mostly Oidiodendron) and DSE (mostly Phialocephala), appeared the dominant component of the fungal community. B. aetnensis harbors an extraordinarily wide array of root-associated soil microorganisms, which are likely to be involved in the adaptation and resistance mechanisms to the extreme environmental conditions in volcano Etna. We argue that nursery-produced seedlings could lack the necessary microbiota for growth and development in natural conditions.

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Section: Discussionmentioning

confidence: 99%