title: Biological Potential of Bioorganic Fertilizer Fortified with Bacterial Antagonist for the Control of Tomato Bacterial Wilt and the Promotion of Crop Yields.
abstract: The application ofBacillussp. in the biological control of plant soilborne diseases has been shown to be an environmentally friendly alternative to the use of chemical fungicides. In this study, the effects of bioorganic fertilizer (BOF) fortified withBacillus amyloliquefaciensSQY 162 on the suppression of tomato bacterial wilt were investigated in pot experiments. The disease incidence of tomato wilt after the application of BOF was 65.18% and 41.62% lower at 10 and 20 days after transplantation, respectively, than in the control condition. BOF also promoted the plant growth. The SQY 162 populations efficiently colonized the tomato rhizosphere, which directly suppressed the number ofRalstonia solanacearumin the tomato rhizosphere soil. In the presence of BOF, the activities of defense-related enzymes in tomato were lower than in the presence of the control treatment, but the expression levels of the defense-related genes of the plants in the salicylic acid and jasmonic acid pathways were enhanced. It was also found that strain SQY 162 could secrete antibiotic surfactin, but not volatile organic compounds, to suppressRalstonia. The strain could also produce plant growth promotion compounds such as siderophores and indole-3-acetic acid. Thus, owing to its innate multiple-functional traits and its broad biocontrol activities, we found that this antagonistic strain isolated from the tobacco rhizosphere could establish itself successfully in the tomato rhizosphere to control soilborne diseases.
authors.affiliation: National Engineering Research Center for Organic-based Fertilizers, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China.|Key Engineering Research Center of Ministry of Education for Sustainable Development and Utilization of Biomass Energy, College of Energy and Environmental Sciences, Yunnan Normal University, Yunnan 650500, P.R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Wu
authors.affiliation: National Engineering Research Center for Organic-based Fertilizers, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China.
authors.forename: Zhiying
authors.initials: Z
authors.lastname: Fang
authors.affiliation: Ningbo Academy of Agricultural Science, Zhejiang 315040, P.R. China.
authors.forename: Lili
authors.initials: L
authors.lastname: Wang
authors.affiliation: National Engineering Research Center for Organic-based Fertilizers, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China.
authors.forename: Saifei
authors.initials: S
authors.lastname: Yuan
authors.affiliation: National Engineering Research Center for Organic-based Fertilizers, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China.
authors.forename: Rong
authors.initials: R
authors.lastname: Guo
authors.affiliation: National Engineering Research Center for Organic-based Fertilizers, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China.
authors.forename: Biao
authors.initials: B
authors.lastname: Shen
authors.affiliation: National Engineering Research Center for Organic-based Fertilizers, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P.R. China.
authors.forename: Qirong
authors.initials: Q
authors.lastname: Shen
mesh_terms: D001407:Bacillus / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D005308:Fertilizers; D018551:Solanum lycopersicum / Q000382:microbiology*; D010572:Pest Control, Biological / Q000379:methods*; D010935:Plant Diseases / Q000382:microbiology / Q000517:prevention & control; D043368:Ralstonia solanacearum / Q000187:drug effects*; D058441:Rhizosphere; D012988:Soil Microbiology
chemical_list: D005308:Fertilizers
keywords: Bacillus amyloliquefaciens; Ralstonia; biocontrol; bioorganic fertilizer; tomato bacterial wilt