Bacillus amyloliquefaciens Strain W19 can Promote Growth and Yield and Suppress Fusarium Wilt in Banana Under Greenhouse and Field Conditions

Wang, Beibei; Shen, Zongzhuan; Zhang, Fengge; Raza, Waseem; Yuan, Jim; Huang, Rongshao; Ruan, Yunze; Li, Rong; Shen, Qirong

doi:10.1016/s1002-0160(15)60083-2

Cited by 71 publications

(33 citation statements)

References 50 publications

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“…to organic fertilizer can effectively reduce Fusarium pathogens and thereby control plant disease [28,36]. Although B. amyloliquefaciens W19 and indigenous Bacillus could not be separately quantified in our experiments, the higher population densities of Bacillus in bio-organic fertilizers treatments (sterilized or non-sterilized organic fertilizer inoculated with B. amyloliquefaciens W19) suggests that the inputs of the biological control agent are involved in enhanced disease suppression ability via direct antagonistic effects on the plant pathogen [39,70].…”

Section: Relative Importance Of Different Components Of Bio-organic Fmentioning

confidence: 85%

Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Tao

Xiong

et al. 2020

Preprint

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Background: Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms (i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least in part due to impacts on the structure and function of the resident soil microbiome. However, it remains unclear whether such improvements are driven by the specific action of microbial inoculants, microbial populations naturally resident to the organic fertilizer or the physical-chemical properties of the compost substrate. The aim of this study was to seek the ecological mechanisms involved in the disease suppressive activity of bio-organic fertilizers.Results: To disentangle the mechanism of bio-organic fertilizer action, we conducted an experiment tracking Fusarium wilt disease of banana and changes in soil microbial communities over three growth seasons in response to the following four treatments: bio-organic fertilizer (containing Bacillus amyloliquefaciens W19), organic fertilizer, sterilized organic fertilizer and sterilized organic fertilizer supplemented with B. amyloliquefaciens W19. We found that sterilized bioorganic fertilizer to which Bacillus was re-inoculated provided a similar degree of disease suppression as the non-sterilized bioorganic fertilizer. We further observed that disease suppression in these treatments could be linked to impacts on the resident soil microbial communities, with noted increases in specific Pseudomonas spp.. The link between Bacillus amendment and indigenous Pseudomonas spp. was further examined using pot experiments and biofilm assays. Conclusion: Together we demonstrate that the action of bioorganic fertilizer is a product of the biocontrol inoculum within the organic amendment and its impact on the resident soil microbiome. This knowledge should help in the design of more efficient biofertilizers designed to promote soil function.

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Section: Relative Importance Of Different Components Of Bio-organic Fmentioning

confidence: 85%

Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Tao

Xiong

et al. 2020

Preprint

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“…Most previous studies on the effects of chemical fungicides and biofungicides have focused on the prevention rate of Fusarium wilt and on yield and yield-related parameters [28], but very few are known about the effect of chemical fungicide or biofungicide application on soil enzymatic activity and diversity of rhizosphere soil microbiota. The large-scale use of chemical fungicides on ornamental plants has resulted in a series of soil problems, including soil pollution, biodiversity decrease, and pathogen resistance [19].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Soil-Applied Chemical Fungicide and Biofungicide for Control of the Fusarium Wilt of Chrysanthemum and Their Effects on Rhizosphere Soil Microbiota

et al. 2018

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Chemical fungicides are a frequently used intervention for the control of the Fusarium wilt of chrysanthemum, but are no longer considered environmentally friendly. However, the biofungicides offer one of the best alternatives to reduce the use of chemical fungicides. In this study, a series of two-year greenhouse experiments were conducted to evaluate the soil-applied chemical fungicide (dazomet, DZ) and biofungicide (biocontrol agent combined with B. subtilis NCD-2, BF) for controlling the Fusarium wilt of chrysanthemum and its effects on rhizosphere soil microbiota. The results indicated that DZ and BF showed good control efficacy of Fusarium wilt of chrysanthemum in the two-year application evaluation. However, the DZ treatment significantly decreased the soil catalase and urease activities compared with the control, while BF showed a significant increase in bacterium/fungus ratios (B/F), soil urease and acid phosphatase activities. Abundances of potential plant pathogens F. oxysporum, Rhizoctonia zeae and Rhizoctonia solani were also lower, while potential plant-growth-promoting micro-organisms like the Rhizobiales bacterium and Mariniflexile sp. were higher in the BF treatment than in the control. Our findings suggested that the overall effect of the soil biota on chrysanthemum growth was more positive and stronger in the BF treatment than in the DZ treatment.

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“…to organic fertilizer can effectively reduce Fusarium pathogens and thereby control plant disease [28,36]. Although B. amyloliquefaciens W19 and indigenous Bacillus could not be separately quanti ed in our experiments, the higher population densities of Bacillus in bio-organic fertilizers treatments (sterilized or non-sterilized organic fertilizer inoculated with B. amyloliquefaciens W19) suggests that the inputs of the biological control agent are involved in enhanced disease suppression ability via direct antagonistic effects on the plant pathogen [39,70].…”

Section: Discussionmentioning

confidence: 78%

Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Tao

Xiong

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Background: Plant diseases caused by fungal pathogen result in a substantial economic impact on the global food and fruit industry. Application of organic fertilizers supplemented with biocontrol microorganisms ( i.e. bioorganic fertilizers) has been shown to improve resistance against plant pathogens at least in part due to impacts on the structure and function of the resident soil microbiome. However, it remains unclear whether such improvements are driven by the specific action of microbial inoculants, microbial populations naturally resident to the organic fertilizer or the physical-chemical properties of the compost substrate. The aim of this study was to seek the ecological mechanisms involved in the disease suppressive activity of bio-organic fertilizers. Results: To disentangle the mechanism of bio-organic fertilizer action, we conducted an experiment tracking Fusarium wilt disease of banana and changes in soil microbial communities over three growth seasons in response to the following four treatments: bio-organic fertilizer (containing Bacillus amyloliquefaciens W19), organic fertilizer, sterilized organic fertilizer and sterilized organic fertilizer supplemented with B. amyloliquefaciens W19. We found that sterilized bioorganic fertilizer to which Bacillus was re-inoculated provided a similar degree of disease suppression as the non-sterilized bioorganic fertilizer across cropping seasons. We further observed that disease suppression in these treatments is linked to impacts on the resident soil microbial communities, specifically by leading to increases in specific Pseudomonas spp.. Observed correlations between Bacillus amendment and indigenous Pseudomonas spp. that might underlie pathogen suppression were further studied in laboratory and pot experiments. These studies revealed that specific bacterial taxa synergistically increase biofilm formation and likely acted as a plant-beneficial consortium against the pathogen. Conclusion: Together we demonstrate that the action of bioorganic fertilizer is a product of the biocontrol inoculum within the organic amendment and its impact on the resident soil microbiome. This knowledge should help in the design of more efficient biofertilizers designed to promote soil function.

show abstract

Bacillus amyloliquefaciens Strain W19 can Promote Growth and Yield and Suppress Fusarium Wilt in Banana Under Greenhouse and Field Conditions

Cited by 71 publications

References 50 publications

Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

Evaluation of Soil-Applied Chemical Fungicide and Biofungicide for Control of the Fusarium Wilt of Chrysanthemum and Their Effects on Rhizosphere Soil Microbiota

Bio-organic fertilizers stimulate indigenous soil Pseudomonas populations to enhance plant disease suppression

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