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Bacillus velezensis strain MBY2, a potential agent for the management of crown gall disease
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Bacillus velezensis strain MBY2, a potential agent for the management of crown gall disease
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Journal Article
Bacillus velezensis strain MBY2, a potential agent for the management of crown gall disease
2021
Overview
The reduction of the use chemical pesticides in agriculture is gaining importance as an objective of decision-makers in both politics and economics. Consequently, the development of technically efficient and economically affordable alternatives as, e.g., biological control agents or practices is highly solicited. Crown gall disease of dicotyledonous plants is caused by ubiquitous soil borne pathogenic bacteria of the Agrobacterium tumefaciens species complex, that comprises the species Agrobacterium fabrum and represents a globally relevant plant protection problem. Within the framework of a screening program for bacterial Agrobacterium antagonists a total of 14 strains were isolated from Tunisian soil samples and assayed for antagonistic activity against pathogenic agrobacteria. One particularly promising isolate, termed strain MBY2, was studied more in depth. Using a Multilocus Sequence Analysis (MLSA) approach, the isolate was assigned to the taxonomic species Bacillus velezensis . Strain MBY2 was shown to display antagonistic effects against the pathogenic A . fabrum strain C58 in vitro and to significantly decrease pathogen populations under sterile and non-sterile soil conditions as well as in the rhizosphere of maize and, to a lower extent, tomato plants. Moreover, the ability of B . velezensis MBY2 to reduce C58-induced gall development has been demonstrated in vivo on stems of tomato and almond plants. The present study describes B . velezensis MBY2 as a newly discovered strain holding potential as a biological agent for crown gall disease management.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Bacteria
/ Biology
/ Computer and Information Sciences
/ DNA
/ Ecology and Environmental Sciences
/ Editing
/ Funding
/ Gall
/ Galls
/ Genes
/ Genetics
/ Genomes
/ Genomics
/ Medicine and Health Sciences
/ Pests
/ Research and Analysis Methods
/ Reviews
/ rRNA 16S
/ Taxonomy
