Fungal volatiles emitted by members of the microbiome of desert plants are diverse and capable of promoting plant growth

Fungal volatiles emitted by members of the microbiome of desert plants are diverse and capable of promoting plant growth

Summary Fungi represent a group of eukaryotic microorganisms that are an important part of the plant microbiome. They produce a vast array of metabolites, including fungal volatile organic compounds (fVOCs). However, the diversity and biological activities of fVOCs emitted by the mycobiota of plants...

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Bibliographic Details
Published in:Environmental microbiology Vol. 23; no. 4; pp. 2215 - 2229
Main Authors: Camarena‐Pozos, D. A., Flores‐Núñez, V. M., López, M. G., Partida‐Martínez, L. P.
Format: Journal Article
Language:English
Published: Hoboken, USA John Wiley & Sons, Inc 01-04-2021
Wiley Subscription Services, Inc
Subjects:
Alcohols
Aliphatic compounds
Allelochemicals
Arid environments
Arid zones
Aridity
Benzoates
Benzoic acid
Benzyl alcohol
Biodiversity
Butanol
Cacti
Camphene
Desert plants
Deserts
Fungi
Host plants
Metabolites
Microbiomes
Microorganisms
Organic compounds
Phenylethyl alcohol
Plant growth
Solid phase methods
Terpenes
VOCs
Volatile compounds
Volatile organic compounds
Volatiles
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Summary:Summary Fungi represent a group of eukaryotic microorganisms that are an important part of the plant microbiome. They produce a vast array of metabolites, including fungal volatile organic compounds (fVOCs). However, the diversity and biological activities of fVOCs emitted by the mycobiota of plants native to arid and semi‐arid environments remain under‐explored. We characterized the chemical diversity of fVOCs produced by 22 representative members of the microbiome of agaves and cacti using SPME‐GC–MS. We further tested the effects of pure compounds on the growth and development of Arabidopsis thaliana and host plants. Members of the Sordariomycetes (nine strains), Eurotiomycetes (three), Dothideomycetes (eight), Saccharomycetes (one) and Mucoromycetes (one) were included in our study. We identified 94 fungal organic volatiles classified into nine chemical classes. Terpenes showed the greatest chemical diversity, followed by alcohols and aliphatic compounds. We discovered that camphene and benzyl benzoate, together with the widely distributed and already tested benzyl alcohol, 2‐phenylethyl alcohol and 3‐methyl‐1‐butanol, improved plant growth and development of A. thaliana, Agave tequilana and Agave salmiana. Our studies on the fungal VOCs from desert plants underscore an untapped chemical diversity with promising biotechnological applications.
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ISSN:1462-2912
1462-2920
DOI:10.1111/1462-2920.15395