Endophytic biofungicide Bacillus subtilis (NBRI-W9) reshapes the metabolic homeostasis disrupted by the chemical fungicide, propiconazole in tomato plants to provide sustainable immunity against non-target bacterial pathogens

Yadav, Udit; Anand, Vandana; Kumar, Sanjeev; Srivastava, Suchi; Mishra, Shashank K.; Chauhan, Puneet Singh; Singh, Poonam C.

doi:10.1016/j.envpol.2023.123144

Environmental Pollution

2024

DOI: 10.1016/j.envpol.2023.123144

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Endophytic biofungicide Bacillus subtilis (NBRI-W9) reshapes the metabolic homeostasis disrupted by the chemical fungicide, propiconazole in tomato plants to provide sustainable immunity against non-target bacterial pathogens

Udit Yadav,

Vandana Anand,

Sanjeev Kumar

et al.

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2024

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Cited by 2 publications

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Optimization of cultivation system for Bacillus Siamese strain and its biocontrol effect on postharvest Colletotrichum gloeosporioides

Hu,

Zhao,

Wang

et al. 2024

Postharvest Biology and Technology

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Optimization of cultivation system for Bacillus Siamese strain and its biocontrol effect on postharvest Colletotrichum gloeosporioides

Hu,

Zhao,

Wang

et al. 2024

Postharvest Biology and Technology

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Bacillus subtilis NBRI-W9 simultaneously activates SAR and ISR against Fusarium chlamydosporum NBRI-FOL7 to increase wilt resistance in tomato

Yadav,

Anand,

Kumar

et al. 2024

Journal of Applied Microbiology

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Aims The study aimed to determine the pathogenicity of Fusarium species currently prevalent in tomato fields having history of chemical fungicide applications and determine the bio-efficacy of Bacillus subtilis NBRI-W9 as a potent biological control agent. Methods and results Fusarium fungus was isolated from surface-sterilized infected tomato plants collected from fields. Pathogenicity of 30 Fusarium isolates was determined by in vitro and in vivo assays. Following Koch's postulates, F. chlamydosporum (FOL7) was identified as a virulent pathogen. The biological control of FOL 7 by B. subtilis NBRI-W9 (W9) and colonization potential of W9 was established using spontaneous rifampicin-resistant mutants. W9 showed 82% inhibition of FOL7 on dual-culture plate and colonization levels in tomato plants of ̴ 5.5, ̴ 3.3, and ̴ 2.2 log10 CFU/g in root, stem, and leaf tissue respectively. Antagonistic activity was shown by SEM and cell-wall degradative enzymes. W9 reduced FOL7 infection in net-house and field experiments by 60% and 41%, respectively. Biochemical investigation, defense enzymes, defense gene expression analysis, SEM, and field studies provide evidence of hyper-parasitism and induced resistance as the mode of biological control. The study also demonstrates that potent biocontrol agent W9, isolated from Piper, can colonize tomato plants, control fungal disease by inducing ISR and SAR simultaneously, and increase crop yield by 21.58% under field conditions. Conclusions This study concludes that F. chlamydosporum (NBRI-FOL7) is a potent, fungicide-resistant pathogen causing wilt in tomatoes. NBRI-W9 controlled FOL7 through mycoparasitism and simultaneously activated ISR and SAR in plants, providing an attractive tool for disease control that acts at multiple levels.

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Endophytic biofungicide Bacillus subtilis (NBRI-W9) reshapes the metabolic homeostasis disrupted by the chemical fungicide, propiconazole in tomato plants to provide sustainable immunity against non-target bacterial pathogens

Cited by 2 publications

References 59 publications

Optimization of cultivation system for Bacillus Siamese strain and its biocontrol effect on postharvest Colletotrichum gloeosporioides

Optimization of cultivation system for Bacillus Siamese strain and its biocontrol effect on postharvest Colletotrichum gloeosporioides

Bacillus subtilis NBRI-W9 simultaneously activates SAR and ISR against Fusarium chlamydosporum NBRI-FOL7 to increase wilt resistance in tomato

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