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

被引:0
|
作者
da Fonseca, Jennifer Salgado [1 ]
Sousa, Thiago Fernandes [1 ]
de Almeida, Suene Vanessa Reis [2 ]
Silva, Carina Nascimento [2 ]
Castro, Gleucinei dos Santos [3 ]
Yamagishi, Michel Eduardo Beleza [4 ]
Koolen, Hector Henrique Ferreira [3 ]
Hanada, Rogerio Eiji [2 ]
da Silva, Gilvan Ferreira [5 ]
机构
[1] Univ Fed Amazonas, Grad Program Biotechnol, BR-69080005 Manaus, AM, Brazil
[2] Natl Amazon Res Inst, Grad Program Agr Humid Trop, BR-69060062 Manaus, AM, Brazil
[3] State Univ Amazonas, Grad Program Biodivers & Biotechnol, BR-69065001 Manaus, AM, Brazil
[4] Embrapa Agr Digital, BR-13083970 Campinas, SP, Brazil
[5] Embrapa Amazonia Ocidental, BR-69010960 Manaus, AM, Brazil
关键词
actinomycetes; phylogenomic identification; dDDH; ANI; bioactive metabolites; bioprospecting; TOMATO PROGENIES; DIVERSITY; STRAINS; KITASATOSPORA; WILT; RESISTANCE; SELECTION; SUBTILIS; SP;
D O I
10.3390/microorganisms12071364
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Bacterial wilt, caused by Ralstonia solanacearum, 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 Solim & otilde;es and Negro rivers for the biocontrol of this disease. From 36 bacteria selected through in vitro antibiosis, three promising isolates were identified: Priestia aryabhattai RN 11, Streptomyces sp. RN 24, and Kitasatospora 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, P. aryabhattai RN 11 reduced disease incidence by 40% and 90%, respectively, while promoting the growth of infected plants. Streptomyces sp. RN 24 and Kitasatospora 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.
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页数:16
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