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Publication Type J
Authors Pereira, E., B. R. V. de Aldana, L. San Emeterio and I. Zabalgogeazcoa
Title A Survey of Culturable Fungal Endophytes From Festuca rubra subsp. pruinosa, a Grass From Marine Cliffs, Reveals a Core Microbiome
Source Frontiers in Microbiology
Language English
Author Keywords mycobiome Diaporthe Fusarium oxysporum Epichloe salinity halophyte grass barley hordeum-brevisubulatum epichloe-festucae stress tolerance neotyphodium endophytes piriformospora-indica salt-stress tall fescue infection plants penicillium Microbiology
Abstract Festuca rubra subsp. pruinosa is a perennial grass that inhabits sea cliffs of the Atlantic coasts of Europe. In this unhospitable environment plants grow in rock crevices and are exposed to abiotic stress factors such as low nutrient availability, wind, and salinity. Festuca rubra subsp. pruinosa is a host of the fungal endophyte Epichloe festucae, which colonizes aerial organs, but its root mycobiota is unknown. The culturable endophytic mycobiota of FRP roots was surveyed in a set of 105 plants sampled at five populations in marine cliffs from the northern coast of Spain. In total, 135 different fungal taxa were identified, 17 of them occurred in more than 10% of plants and in two or more populations. Seven taxa belonging to Fusarium, Diaporthe, Helotiales, Drechslera, Slopeiomyces, and Penicillium appeared to be constituents of the core microbiome of Festuca rubra subsp. pruinosa roots because they occurred in more than 20% of the plants analyzed, and at three or more populations. Most fungal strains analyzed (71.8%) were halotolerant. The presence of Epichloe festucae in aboveground tissue was detected in 65.7% of the plants, but its presence did not seem to significantly affect the structure of the core or other root microbiota, when compared to that of plants free of this endophyte. When plants of the grass Lolium perenne were inoculated with fungal strains obtained from Festuca rubra subsp. pruinosa roots, a Diaporthe strain significantly promoted leaf biomass production under normal and saline (200 mM NaCI) watering regimes. These results suggest that the core mycobiome of Festuca rubra subsp. pruinosa could have a role in host plant adaptation, and might be useful for the improvement of agricultural grasses.
Author Address [Pereira, Eric; Vazquez de Aldana, Beatriz R.; Zabalgogeazcoa, Inigo] CSIC, Inst Nat Resources & Agrobiol Salamanca, IRNASA, Salamanca, Spain. [San Emeterio, Leticia] Univ Publ Navarra, Res Inst Innovat & Sustainable Dev Food Chain ISF, Pamplona 8, Spain. Zabalgogeazcoa, I (reprint author), CSIC, Inst Nat Resources & Agrobiol Salamanca, IRNASA, Salamanca, Spain. i.zabalgo@irnasa.csic.es
ISSN 1664-302X
ISBN 1664-302X
29-Character Source Abbreviation Front. Microbiol.
Publication Date Jan
Year Published 2019
Volume 9
Beginning Page 14
Digital Object Identifier (DOI) 10.3389/fmicb.2018.03321
Unique Article Identifier WOS:000455791800001
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