Versatile Antagonistic Activities of Soil-Borne Bacillus spp. and Pseudomonas spp. against Phytophthora infestans and Other Potato Pathogens

Frontiers in Microbiology
Simon CaulierClaude Bragard

Abstract

The world potato is facing major economic losses due to disease pressure and environmental concerns regarding pesticides use. This work aims at addressing these two issues by isolating indigenous bacteria that can be integrated into pest management strategies. More than 2,800 strains of Bacillus-like and Pseudomonas-like were isolated from several soils and substrates associated with potato agro-systems in Belgium. Screenings for antagonistic activities against the potato pathogens Alternaria solani, Fusarium solani (BCCM-MUCL 5492), Pectobacterium carotovorum (ATCC 15713), Phytophthora infestans (CRA-W10022) and Rhizoctonia solani (BCCM-MUCL 51929) were performed, allowing the selection of 52 Bacillus spp. and eight Pseudomonas spp. displaying growth inhibition of at least 50% under in vitro conditions, particularly against P. infestans. All 60 bacterial isolates were identified based on 16S rRNA gene sequencing and further characterized for the production of potential bio-active secondary metabolites. The antagonistic activities displayed by the selected strains indicated that versatile metabolites can be produced by the strains. For instance, the detection of genes involved bacilysin biosynthesis was correlated with the stro...Continue Reading

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Citations

Mar 16, 2019·Frontiers in Microbiology·Simon CaulierJacques Mahillon
Jul 19, 2020·Current Microbiology·Pottekkat Sidharthan PanchamiSubburamu Karthikeyan
Aug 28, 2020·Frontiers in Bioengineering and Biotechnology·Ankita ChopraSurekha Satpute
Sep 2, 2020·Journal of Natural Products·Hui-Xiang YangJi-Kai Liu
May 18, 2021·Pesticide Biochemistry and Physiology·Zhihua WuHuirong Liu
Aug 28, 2021·Biomolecules·Miguel BaltazarBerta Gonçalves
Dec 12, 2021·Journal of Basic Microbiology·Muhammad Saqib MalikMuhammad Anees

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Datasets Mentioned

BETA
MF062580
MF062639

Methods Mentioned

BETA
PCR
electrophoresis
PCA

Software Mentioned

BLAST
MEGA
Image J®
corrplot
BLASTn
CARAH

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