Amazonian Bacteria from River Sediments as a Biocontrol Solution against Ralstonia solanacearum

Bacterial wilt, caused by , is one of the main challenges for sustainable tomato production in the Amazon region. This study evaluated the potential of bacteria isolated from sediments of the Solimões and Negro rivers for the biocontrol of this disease. From 36 bacteria selected through in vitro ant...

Full description

Saved in:
Bibliographic Details
Published in:Microorganisms (Basel) 2024-07, Vol.12 (7), p.1364
Main Authors: Fonseca, Jennifer Salgado da, Sousa, Thiago Fernandes, Almeida, Suene Vanessa Reis de, Silva, Carina Nascimento, Castro, Gleucinei Dos Santos, Yamagishi, Michel Eduardo Beleza, Koolen, Hector Henrique Ferreira, Hanada, Rogério Eiji, Silva, Gilvan Ferreira da
Format: Article
Language:English
Subjects:
Acetic acid
actinomycetes
Ammonia
ANI
Antibiosis
Bacteria
bioactive metabolites
Biological control
bioprospecting
Cultivars
dDDH
Disease
Extracellular enzymes
Fluvial sediments
Genomes
Humidity
Indoleacetic acid
Pathogens
phylogenomic identification
Plant bacterial diseases
Plant growth
Plant resistance
Rainy season
Ralstonia solanacearum
Rivers
Sediments
Soil bacteria
Soil microorganisms
Streptomyces
Survival
Sustainability management
Sustainable development
Tomatoes
Wilt
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bacterial wilt, caused by , is one of the main challenges for sustainable tomato production in the Amazon region. This study evaluated the potential of bacteria isolated from sediments of the Solimões and Negro rivers for the biocontrol of this disease. From 36 bacteria selected through in vitro antibiosis, three promising isolates were identified: RN 11, sp. RN 24, and sp. SOL 195, which inhibited the growth of the phytopathogen by 100%, 87.62%, and 100%, respectively. These isolates also demonstrated the ability to produce extracellular enzymes and plant growth-promoting compounds, such as indole-3-acetic acid (IAA), siderophore, and ammonia. In plant assays, during both dry and rainy seasons, RN 11 reduced disease incidence by 40% and 90%, respectively, while promoting the growth of infected plants. sp. RN 24 and sp. SOL 195 exhibited high survival rates (85-90%) and pathogen suppression in the soil (>90%), demonstrating their potential as biocontrol agents. This study highlights the potential of Amazonian bacteria as biocontrol agents against bacterial wilt, contributing to the development of sustainable management strategies for this important disease.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms12071364