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Wang D, Luo WZ, Zhang DD, Li R, Kong ZQ, Song J, Dai XF, Alkan N, Chen JY. Insights into the Biocontrol Function of a Burkholderia gladioli Strain against Botrytis cinerea. Microbiol Spectr 2023; 11:e0480522. [PMID: 36861984 PMCID: PMC10101029 DOI: 10.1128/spectrum.04805-22] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/10/2023] [Indexed: 03/03/2023] Open
Abstract
Pathogenic fungi are the main cause of yield loss and postharvest loss of crops. In recent years, some antifungal microorganisms have been exploited and applied to prevent and control pathogenic fungi. In this study, an antagonistic bacteria KRS027 isolated from the soil rhizosphere of a healthy cotton plant from an infected field was identified as Burkholderia gladioli by morphological identification, multilocus sequence analysis, and typing (MLSA-MLST) and physiobiochemical examinations. KRS027 showed broad spectrum antifungal activity against various phytopathogenic fungi by secreting soluble and volatile compounds. KRS027 also has the characteristics of plant growth promotion (PGP) including nitrogen fixation, phosphate, and potassium solubilization, production of siderophores, and various enzymes. KRS027 is not only proven safe by inoculation of tobacco leaves and hemolysis test but also could effectively protect tobacco and table grapes against gray mold disease caused by Botrytis cinerea. Furthermore, KRS027 can trigger plant immunity by inducing systemic resistance (ISR) activated by salicylic acid- (SA), jasmonic acid- (JA), and ethylene (ET)-dependent signaling pathways. The extracellular metabolites and volatile organic compounds (VOCs) of KRS027 affected the colony extension and hyphal development by downregulation of melanin biosynthesis and upregulation of vesicle transport, G protein subunit 1, mitochondrial oxidative phosphorylation, disturbance of autophagy process, and degrading the cell wall of B. cinerea. These results demonstrated that B. gladioli KRS027 would likely become a promising biocontrol and biofertilizer agent against fungal diseases, including B. cinerea, and would promote plant growth. IMPORTANCE Searching the economical, eco-friendly and efficient biological control measures is the key to protecting crops from pathogenic fungi. The species of Burkholderia genus are widespread in the natural environment, of which nonpathogenic members have been reported to have great potential for biological control agents and biofertilizers for agricultural application. Burkholderia gladioli strains, however, need more study and application in the control of pathogenic fungi, plant growth promotion, and induced systemic resistance (ISR). In this study, we found that a B. gladioli strain KRS027 has broad spectrum antifungal activity, especially in suppressing the incidence of gray mold disease caused by Botrytis cinerea, and can stimulate plant immunity response via ISR activated by salicylic acid- (SA), jasmonic acid- (JA), and ethylene (ET)-dependent signaling pathways. These results indicate that B. gladioli KRS027 may be a promising biocontrol and biofertilizer microorganism resource in agricultural applications.
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Affiliation(s)
- Dan Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Wan-Zhen Luo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agronomy, Xinjiang Agricultural University, Urumqi, China
| | - Dan-Dan Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ran Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Zhi-Qiang Kong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jian Song
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiao-Feng Dai
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
| | - Noam Alkan
- Department of Postharvest Science, Agricultural Research Organization, Volcani Institute, Rishon LeZion, Israel
| | - Jie-Yin Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, China
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Shen S, Li W, Wang J. Inhibitory activity of Halobacillus trueperi S61 and its active extracts on potato dry rot. Bioengineered 2022; 13:3852-3867. [PMID: 35164641 PMCID: PMC8973691 DOI: 10.1080/21655979.2021.2024375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This study investigated the inhibitory activity of Halobacillus trueperi S61 and its active extract on potato dry rot pathogens and aimed at contributing to biocontrol agent development during potato storage. Three kinds of pathogens were isolated as target pathogenic fungi from dry rot tubers and determined as Fusarium acuminatum (Qing 9A-2), Fusarium equisetai (Qing 9A-5-8) and Fusarium tricinctum (Qing 9A-1-1) by morphological and molecular identification. The strain Halobacillus trueperi S61 and its extract exhibited a higher inhibitory rate on both three pathogens (56.32–65.75 and 1.67–51.11%), notably the best suppression efficiency is presented in Halobacillus trueperi S61 and 40 mg/mL ethyl acetate extract. In terms of in vivo effects, both Halobacillus trueperi S61 and its ethyl acetate extract effectively reduced the decayed fruit and weight loss rate (0–20% and 7.59–16.56%) and enhanced the defensive enzymatic activities to improve resistance. In addition, strain S61 could be colonized on potato tubers, especially the highest amount of 1.55 × 107 CFU/mL on fifth day for variety Xiazhai 65. Overall, Halobacillus trueperi S61 and its ethyl acetate extract could be considered as potential approach for biocontrol potato dry rot.
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Affiliation(s)
- Shuo Shen
- Academy of Agriculture and Forestry, Qinghai University, Xining, Qinghai 810016 China.,Key Laboratory of Potato Breeding in Qinghai Province, Xining, Qinghai 810016 China.,State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai 810016 China.,Key Laboratory of Qinghai Tibet Plateau Biotechnology, Ministry of Education Xining, Qinghai 810016 China.,Northwest Potato Engineering Research Center, Ministry of Education, Xining, Qinghai 810016 China
| | - Wei Li
- Academy of Agriculture and Forestry, Qinghai University, Xining, Qinghai 810016 China.,Key Laboratory of Potato Breeding in Qinghai Province, Xining, Qinghai 810016 China.,State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai 810016 China.,Key Laboratory of Qinghai Tibet Plateau Biotechnology, Ministry of Education Xining, Qinghai 810016 China.,Northwest Potato Engineering Research Center, Ministry of Education, Xining, Qinghai 810016 China
| | - Jian Wang
- Academy of Agriculture and Forestry, Qinghai University, Xining, Qinghai 810016 China.,Key Laboratory of Potato Breeding in Qinghai Province, Xining, Qinghai 810016 China.,State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai 810016 China.,Key Laboratory of Qinghai Tibet Plateau Biotechnology, Ministry of Education Xining, Qinghai 810016 China.,Northwest Potato Engineering Research Center, Ministry of Education, Xining, Qinghai 810016 China
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Ma G, Gao X, Nan J, Zhang T, Xie X, Cai Q. Fungicides alter the distribution and diversity of bacterial and fungal communities in ginseng fields. Bioengineered 2021; 12:8043-8056. [PMID: 34595989 PMCID: PMC8806933 DOI: 10.1080/21655979.2021.1982277] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The present study was focused on comparison of four typical fungicides in ginseng field to evaluate the impact of the different fungicides on the soil bacterial and fungal communities’ composition and diversity by using high-throughput sequencing. Five treatments were designed comprising carbendazim (D), dimethyl disulfide (E), dazomet (M), calcium cyanamide (S), and control (C). The application of fungicide obviously altered the distribution of dominant fungal and bacterial communities and remarkably decreased the diversity (1099-763 and 6457-2245). The most abundant Proteobacteria obviously degenerate in fungicide-treated soil and minimum in E (0.09%) compared to control (25.72%). The relative abundance of Acidobacteria was reduced from 27.76 (C) to 7.14% after applying fungicide and minimum in E. The phylum Actinobacteria are both decomposers of organic matter and enemies of soil-borne pathogens, elevated from 11.62 to 51.54% and are high in E. The fungi community mainly distributed into Ascomycota that enriched from 66.09 to 88.21% and highin M and E (88.21 and 85.10%), and Basidiomycota reduced from 21.13 to 3.23% and low in M and E (5.27 and 3.23%). Overall, environmentally related fungicides decreased the diversity and altered the composition of bacterial and fungal communities, highest sensitivity present in dimethyl disulfide-treated soil.
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Affiliation(s)
- Guilong Ma
- College of Plant Protection, Jilin Agricultural University, Changchun, China
| | - Xinxin Gao
- College of Plant Protection, Jilin Agricultural University, Changchun, China
| | - Jie Nan
- College of Plant Protection, Jilin Agricultural University, Changchun, China
| | - Tingting Zhang
- College of Plant Protection, Jilin Agricultural University, Changchun, China
| | - Xiaobao Xie
- College of Plant Protection, Jilin Agricultural University, Changchun, China
| | - Qi Cai
- College of Plant Protection, Jilin Agricultural University, Changchun, China
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