The ecological role of bacterial seed endophytes associated with wild cabbage in the United Kingdom

Endophytic bacteria are known for their ability in promoting plant growth and defense against biotic and abiotic stress. However, very little is known about the microbial endophytes living in the spermosphere. Here, we i
Endophytic bacteria are known for their ability in promoting plant growth and defense against biotic and abiotic stress. However, very little is known about the microbial endophytes living in the spermosphere. Here, we isolated bacteria from the seeds of five different populations of wild cabbage (Brassica oleracea L) that grow within 15 km of each other along the Dorset coast in the UK. The seeds of each plant population contained a unique microbiome. Sequencing of the 16S rRNA genes revealed that these bacteria belong to three different phyla (Actinobacteria, Firmicutes, and Proteobacteria). Isolated endophytic bacteria were grown in monocultures or mixtures and the effects of bacterial volatile organic compounds (VOCs) on the growth and development on B. oleracea and on resistance against a insect herbivore was evaluated. Our results reveal that the VOCs emitted by the endophytic bacteria had a profound effect on plant development but only a minor effect on resistance against an herbivore of B. oleracea. Plants exposed to bacterial VOCs showed faster seed germination and seedling development. Furthermore, seed endophytic bacteria exhibited activity via volatiles against the plant pathogen F. culmorum. Hence, our results illustrate the ecological importance of the bacterial seed microbiome for host plant health and development.
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Author:Olaf Tyc, Rocky Putra, Rieta Gols, Jeffrey A. Harvey, Paolina Garbeva
URN:urn:nbn:de:hebis:30:3-533232
DOI:http://dx.doi.org/10.1002/mbo3.954
ISSN:2045-8827
Pubmed Id:http://www.ncbi.nlm.nih.gov/pubmed?term=31721471
Parent Title (English):MicrobiologyOpen
Publisher:Wiley
Place of publication:Malden, Mass.
Document Type:Article
Language:English
Year of Completion:2019
Date of first Publication:2019/11/13
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2020/03/25
Tag:bacteria; endophytes; fungal pathogens; insect herbivory; plant growth; plant resistance; plant-insect interactions; seed germination
Volume:9
Issue:1, e954
Pagenumber:19
First Page:1
Last Page:19
Note:
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Institutes:Medizin
Dewey Decimal Classification:610 Medizin und Gesundheit
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0

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