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Chen L, Bian L, Ma Q, Li Y, Wang X, Liu Y. Defensive alteration of root exudate composition by grafting Prunus sp. onto resistant rootstock contributes to reducing crown gall disease. HORTICULTURE RESEARCH 2024; 11:uhae049. [PMID: 38645683 PMCID: PMC11031412 DOI: 10.1093/hr/uhae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 02/14/2024] [Indexed: 04/23/2024]
Abstract
Grafting is a traditional and significant strategy to suppress soil-borne diseases, such as the crown gall disease caused by tumorigenic Agrobacterium and Rhizobium. Root exudates and the rhizosphere microbiome play critical roles in controlling crown gall disease, but their roles in suppressing crown gall disease in grafted plants remain unclear. Here, disease-susceptible cherry rootstock 'Gisela 6' and disease-resistant cherry rootstock 'Haiying 1' were grafted onto each other or self-grafted. The effect of their root exudates on the soil microbiome composition and the abundance of pathogenic Agrobacterium were studied. Grafting onto the disease-resistant rootstock helped to reduce the abundance of pathogenic Agrobacterium, accompanied by altering root exudation, enriching potential beneficial bacteria, and changing soil function. Then, the composition of the root exudates from grafted plants was analyzed and the potential compounds responsible for decreasing pathogenic Agrobacterium abundance were identified. Based on quantitative measurement of the concentrations of the compounds and testing the impacts of supplied pure chemicals on abundance and chemotaxis of pathogenic Agrobacterium and potential beneficial bacteria, the decreased valine in root exudates of the plant grafted onto resistant rootstock was found to contribute to decreasing Agrobacterium abundance, enriching some potential beneficial bacteria and suppressing crown gall disease. This study provides insights into the mechanism whereby grafted plants suppress soil-borne disease.
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Affiliation(s)
- Lin Chen
- National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain, Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Lusen Bian
- National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain, Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Qinghua Ma
- National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain, Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Ying Li
- National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain, Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Xinghong Wang
- National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain, Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Yunpeng Liu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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2
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Petit C, Caudal F, Taupin L, Dufour A, Le Ker C, Giudicelli F, Rodrigues S, Bazire A. Antibiofilm Activity of the Marine Probiotic Bacillus subtilis C3 Against the Aquaculture-Relevant Pathogen Vibrio harveyi. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10229-z. [PMID: 38329698 DOI: 10.1007/s12602-024-10229-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
V. harveyi is a well-known pathogen-inducing vibriosis, especially for shrimp, fish, and invertebrates. Its virulence is related to biofilm formation and this negatively impacts the aquaculture industry. Therapeutic strategies such as the utilization of probiotic bacteria may slow down Vibrio infections. In this study, we investigated the potential antibiofilm activity of the probiotic Bacillus subtilis C3 for aquaculture. First, B. subtilis C3 biofilm was characterized by confocal laser scanning microscopy (CLSM) before testing its bioactivities. We demonstrated antibiofilm activity of B. subtilis C3 culture supernatant, which is mainly composed-among other molecules-of lipopeptidic surfactants belonging to the surfactin family as identified by ultra-high-performance liquid chromatography (UHPLC)-MS/MS. Their antibiofilm activity was confirmed on V. harveyi ORM4 (pFD086) biofilm by CLSM. These findings suggest that the marine probiotic B. subtilis C3 might inhibit or reduce Vibrio colonization and thus decrease the associated animal mortalities.
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Affiliation(s)
- Coraline Petit
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, IUEM, EMR 6076, 56100, Lorient, France
- Marine Akwa, 1 rue René Cassin, 22100, Dinan, France
| | - Flore Caudal
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, IUEM, EMR 6076, 56100, Lorient, France
| | - Laure Taupin
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, IUEM, EMR 6076, 56100, Lorient, France
| | - Alain Dufour
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, IUEM, EMR 6076, 56100, Lorient, France
| | - Carine Le Ker
- Marine Akwa, 1 rue René Cassin, 22100, Dinan, France
| | | | - Sophie Rodrigues
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, IUEM, EMR 6076, 56100, Lorient, France
| | - Alexis Bazire
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, IUEM, EMR 6076, 56100, Lorient, France.
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3
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Nihorimbere G, Korangi Alleluya V, Nimbeshaho F, Nihorimbere V, Legrève A, Ongena M. Bacillus-based biocontrol beyond chemical control in central Africa: the challenge of turning myth into reality. FRONTIERS IN PLANT SCIENCE 2024; 15:1349357. [PMID: 38379944 PMCID: PMC10877027 DOI: 10.3389/fpls.2024.1349357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/08/2024] [Indexed: 02/22/2024]
Abstract
Agricultural productivity in the Great Lakes Countries of Central Africa, including Burundi, Rwanda, and the Democratic Republic of Congo, is affected by a wide range of diseases and pests which are mainly controlled by chemical pesticides. However, more than 30% of the pesticides used in the region are banned in European Union due to their high toxicity. Globally available safe and eco-friendly biological alternatives to chemicals are virtually non-existent in the region. Bacillus PGPR-based biocontrol products are the most dominant in the market and have proven their efficacy in controlling major plant diseases reported in the region. With this review, we present the current situation of disease and pest management and urge the need to utilize Bacillus-based control as a possible sustainable alternative to chemical pesticides. A repertoire of strains from the Bacillus subtilis group that have shown great potential to antagonize local pathogens is provided, and efforts to promote their use, as well as the search for indigenous and more adapted Bacillus strains to local agro-ecological conditions, should be undertaken to make sustainable agriculture a reality in the region.
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Affiliation(s)
- Gaspard Nihorimbere
- Phytopathology- Applied Microbiology, Earth, and Life Institute, UCLouvain, Louvain-la-neuve, Belgium
- Unité de défense des végétaux, Institut des Sciences Agronomiques du Burundi, Bujumbura, Burundi
| | - Virginie Korangi Alleluya
- Microbial Processes and Interactions, TERRA Teaching and Research Center, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- Chemical and Agricultural Industries, Faculty of Agricultural Sciences, University of Kinshasa, Kinshasa, Democratic Republic of Congo
| | - François Nimbeshaho
- Microbial Processes and Interactions, TERRA Teaching and Research Center, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
- Laboratoire de Nutrition-Phytochimie, d’Ecologie et d’Environnement Appliquée, Centre Universitaire de Recherche et de Pédagogie Appliquées aux Sciences, Institut de Pédagogie Appliquée, Université du Burundi, Bujumbura, Burundi
| | - Venant Nihorimbere
- Département des Sciences et Technologie des Aliments, Faculté de Bio-Ingénierie, Université du Burundi, Bujumbura, Burundi
| | - Anne Legrève
- Phytopathology- Applied Microbiology, Earth, and Life Institute, UCLouvain, Louvain-la-neuve, Belgium
| | - Marc Ongena
- Microbial Processes and Interactions, TERRA Teaching and Research Center, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
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4
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Ye C, Liu D, Huang K, Li D, Ma X, Jin Y, Xiong H. Isolation of starch and protein degrading strain Bacillus subtilis FYZ1-3 from tobacco waste and genomic analysis of its tolerance to nicotine and inhibition of fungal growth. Front Microbiol 2023; 14:1260149. [PMID: 38033584 PMCID: PMC10687635 DOI: 10.3389/fmicb.2023.1260149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/24/2023] [Indexed: 12/02/2023] Open
Abstract
Aerobic fermentation is an effective technique for the large-scale processing of tobacco waste. However, the specificity of the structure and composition of tobacco-derived organic matter and the toxic alkaloids in the material make it currently difficult to directly use microbial agents. In this study, a functional strain FYZ1-3 was isolated and screened from thermophilic phase samples of tobacco waste composting. This strain could withstand temperatures as high as 80°C and grow normally at 0.6% nicotine content. Furthermore, it had a strong decomposition capacity of tobacco-derived starch and protein, with amylase activity of 122.3 U/mL and protease activity and 52.3 U/mL, respectively. To further understand the mechanism of the metabolic transformation of the target, whole genome sequencing was used and the secondary metabolite gene cluster was predicted. The inhibitory effect of the strain on common tobacco fungi was verified using the plate confrontation and agar column methods. The results showed that the strain FYZ1-3 was Bacillus subtilis, with a genome size of 4.17 Mb and GC content of 43.68%; 4,338 coding genes were predicted. The genome was annotated and analyzed using multiple databases to determine its ability to efficiently degrade starch proteins at the molecular level. Moreover, 14 functional genes related to nicotine metabolism were identified, primarily located on the distinct genomic island of FYZ1-3, giving a speculation for its nicotine tolerance capability on the molecular mechanism. By mining the secondary metabolite gene cluster prediction, we found potential synthetic bacteriocin, antimicrobial peptide, and other gene clusters on its chromosome, which may have certain antibacterial properties. Further experiments confirmed that the FYZ1-3 strain was a potent growth inhibitor of Penicillium chrysogenum, Aspergillus sydowii, A. fumigatus, and Talaromyces funiculosus. The creation and industrial use of the functional strains obtained in this study provide a theoretical basis for its industrial use, where it would be of great significance to improve the utilization rate of tobacco waste.
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Affiliation(s)
- Changwen Ye
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
- China Tobacco Standardization Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Dandan Liu
- China Tobacco Standardization Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Kuo Huang
- China Tobacco Standardization Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Dong Li
- China Tobacco Standardization Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Xinxin Ma
- School of Environment, Tsinghua University, Beijing, China
| | - Yiying Jin
- School of Environment, Tsinghua University, Beijing, China
| | - Hanguo Xiong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
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5
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Aimaier R, Li H, Cao W, Cao X, Zhang H, You J, Zhao J, Zhang Q, Yin L, Mei Q, Zhang X, Wang W, Zhao H, Li J, Zhao H. The Secondary Metabolites of Bacillus subtilis Strain Z15 Induce Apoptosis in Hepatocellular Carcinoma Cells. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10181-4. [PMID: 37906413 DOI: 10.1007/s12602-023-10181-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2023] [Indexed: 11/02/2023]
Abstract
The lipopeptides produced by Bacillus subtilis have anti-cancer potential. We had previously identified a secondary metabolite of B. subtilis strain Z15 (BS-Z15), which has an operon that regulates lipopeptide synthesis, and also demonstrated that the fermentation products of this strain exerted antioxidant and pro-immune effects. The purpose of this study was to investigate in vitro and in vivo the anticancer effects of BS-Z15 secondary metabolites (BS-Z15 SMs) on hepatocellular carcinoma (HCC) cells. BS-Z15 SMs significantly inhibited H22 cell-derived murine xenograft tumor growth without any systemic toxicity. In addition, BS-Z15 SMs decreased the viability of H22 cells and BEL-7404 cells in vitro with respective IC50 values of 33.83 and 27.26 µg/mL. Consistent with this, BS-Z15 SMs induced apoptosis and G0/G1 phase arrest in the BEL-7404 cells, and the mitochondrial membrane potential was also significantly reduced in a dose-dependent manner. Mechanistically, BS-Z15 SMs upregulated the pro-apoptotic p53, Bax, cytochrome C, and cleaved-caspase-3/9 proteins and downregulated the anti-apoptotic Bcl-2. These findings suggest that the induction of apoptosis in HCC cells by BS-Z15 SMs may be related to the mitochondrial pathway. Thus, the secondary metabolites of B. subtilis strain Z15 are promising to become new anti-cancer drugs for the clinical treatment of liver cancer.
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Affiliation(s)
- Reyihanguli Aimaier
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Haoran Li
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Wenzhi Cao
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Xiyuan Cao
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Hui Zhang
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Jia You
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Jingjing Zhao
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Qi Zhang
- Beijing Key Laboratory of Gene Resource and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Li Yin
- Beijing Key Laboratory of Gene Resource and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Qinshuang Mei
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Xiaorong Zhang
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Weiquan Wang
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China
| | - Huixin Zhao
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China.
| | - Jinyu Li
- Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, College of Life Science, Xinjiang Normal University, Urumqi, China.
| | - Heping Zhao
- Beijing Key Laboratory of Gene Resource and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, China.
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6
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Sun Y, Su Y, Meng Z, Zhang J, Zheng L, Miao S, Qin D, Ruan Y, Wu Y, Xiong L, Yan X, Dong Z, Cheng P, Shao M, Yu G. Biocontrol of bacterial wilt disease in tomato using Bacillus subtilis strain R31. Front Microbiol 2023; 14:1281381. [PMID: 37840725 PMCID: PMC10568012 DOI: 10.3389/fmicb.2023.1281381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 09/14/2023] [Indexed: 10/17/2023] Open
Abstract
Bacterial wilt disease caused by Ralstonia solanacearum is a widespread, severe plant disease. Tomato (Solanum lycopersicum), one of the most important vegetable crops worldwide, is particularly susceptible to this disease. Biological control offers numerous advantages, making it a highly favorable approach for managing bacterial wilt. In this study, the results demonstrate that treatment with the biological control strain Bacillus subtilis R31 significantly reduced the incidence of tomato bacterial wilt. In addition, R31 directly inhibits the growth of R. solanacearum, and lipopeptides play an important role in this effect. The results also show that R31 can stably colonize the rhizosphere soil and root tissues of tomato plants for a long time, reduce the R. solanacearum population in the rhizosphere soil, and alter the microbial community that interacts with R. solanacearum. This study provides an important theoretical basis for elucidating the mechanism of B. subtilis as a biological control agent against bacterial wilt and lays the foundation for the optimization and promotion of other agents such as R31.
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Affiliation(s)
- Yunhao Sun
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yutong Su
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Zhen Meng
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Jie Zhang
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Li Zheng
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Shuang Miao
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Di Qin
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yulan Ruan
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yanhui Wu
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Lina Xiong
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xun Yan
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Zhangyong Dong
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Ping Cheng
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
| | - Mingwei Shao
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Guohui Yu
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Guangdong University Key Laboratory for Sustainable Control of Fruit and Vegetable Diseases and Pests, Guangzhou, China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
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Ayaz M, Li CH, Ali Q, Zhao W, Chi YK, Shafiq M, Ali F, Yu XY, Yu Q, Zhao JT, Yu JW, Qi RD, Huang WK. Bacterial and Fungal Biocontrol Agents for Plant Disease Protection: Journey from Lab to Field, Current Status, Challenges, and Global Perspectives. Molecules 2023; 28:6735. [PMID: 37764510 PMCID: PMC10537577 DOI: 10.3390/molecules28186735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/16/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023] Open
Abstract
Plants are constantly exposed to various phytopathogens such as fungi, Oomycetes, nematodes, bacteria, and viruses. These pathogens can significantly reduce the productivity of important crops worldwide, with annual crop yield losses ranging from 20% to 40% caused by various pathogenic diseases. While the use of chemical pesticides has been effective at controlling multiple diseases in major crops, excessive use of synthetic chemicals has detrimental effects on the environment and human health, which discourages pesticide application in the agriculture sector. As a result, researchers worldwide have shifted their focus towards alternative eco-friendly strategies to prevent plant diseases. Biocontrol of phytopathogens is a less toxic and safer method that reduces the severity of various crop diseases. A variety of biological control agents (BCAs) are available for use, but further research is needed to identify potential microbes and their natural products with a broad-spectrum antagonistic activity to control crop diseases. This review aims to highlight the importance of biocontrol strategies for managing crop diseases. Furthermore, the role of beneficial microbes in controlling plant diseases and the current status of their biocontrol mechanisms will be summarized. The review will also cover the challenges and the need for the future development of biocontrol methods to ensure efficient crop disease management for sustainable agriculture.
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Affiliation(s)
- Muhammad Ayaz
- Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230041, China; (M.A.); (W.Z.); (Y.-K.C.)
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.-Y.Y.); (Q.Y.); (J.-T.Z.); (J.-W.Y.)
| | - Cai-Hong Li
- Cotton Sciences Research Institute of Hunan, Changde 415101, China;
| | - Qurban Ali
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China;
| | - Wei Zhao
- Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230041, China; (M.A.); (W.Z.); (Y.-K.C.)
| | - Yuan-Kai Chi
- Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230041, China; (M.A.); (W.Z.); (Y.-K.C.)
| | - Muhammad Shafiq
- Biology Department and Institute of Marine Sciences, College of Science, Shantou University, Shantou 515063, China;
| | - Farman Ali
- Department of Entomology, Abdul Wali Khan University, Mardan 23200, Pakistan;
| | - Xi-Yue Yu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.-Y.Y.); (Q.Y.); (J.-T.Z.); (J.-W.Y.)
| | - Qing Yu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.-Y.Y.); (Q.Y.); (J.-T.Z.); (J.-W.Y.)
| | - Jing-Tian Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.-Y.Y.); (Q.Y.); (J.-T.Z.); (J.-W.Y.)
| | - Jing-Wen Yu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.-Y.Y.); (Q.Y.); (J.-T.Z.); (J.-W.Y.)
| | - Ren-De Qi
- Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Hefei 230041, China; (M.A.); (W.Z.); (Y.-K.C.)
| | - Wen-Kun Huang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (X.-Y.Y.); (Q.Y.); (J.-T.Z.); (J.-W.Y.)
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8
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Liu N, Sun H, Tang Z, Zheng Y, Qi G, Zhao X. Transcription Factor Spo0A Regulates the Biosynthesis of Difficidin in Bacillus amyloliquefaciens. Microbiol Spectr 2023; 11:e0104423. [PMID: 37432122 PMCID: PMC10434259 DOI: 10.1128/spectrum.01044-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/23/2023] [Indexed: 07/12/2023] Open
Abstract
Bacillus amyloliquefaciens WH1 produces multiple antibiotics with antimicrobial activity and can control bacterial wilt disease caused by Ralstonia solanacearum. Antibacterial substances produced by WH1 and the regulation mechanism are unknown. In this study, it was found that difficidin, and to a minor extent bacillibactin, exhibited antibacterial activity against R. solanacearum. Lipopeptides, macrolactin, bacillaene, and bacilysin had no antibacterial activity. Ferric iron uptake transcriptional regulator Fur bound the promoter region of the dhb gene cluster of bacillibactin biosynthesis. Mutant Δfur showed a higher bacillibactin production and its antibacterial activity increased by 27% than wild-type WH1. Difficidin inhibited R. solanacearum growth and disrupted the integrity of the cells. Lack of transcription factor Spo0A abolished difficidin biosynthesis. Spo0A bound the promoter region of the dfn gene cluster of difficidin biosynthesis. Changing phosphorylation levels of Spo0A via deletion of phosphatase gene spo0E and histidine kinases genes kinA and kinD affected the biosynthesis of difficidin. Deletion of spo0E increased the phosphorylation level of Spo0A and consequently improved the difficidin production. The antibacterial activity of mutant Δspo0E and ΔkinA increased by 12% and 19%. The antibacterial activity of mutant ΔkinD decreased by 28%. Collectively, WH1 produced difficidin to disrupt the cell of R. solanacearum and secreted siderophore bacillibactin to compete for ferric iron. Spo0A regulated difficidin biosynthesis. Spo0A regulates quorum-sensing responses and controls the biosynthesis of secondary metabolites in B. amyloliquefaciens. This study has important findings in the regulation mechanism of antibiotic synthesis and helps to improve antibiotic yield in Bacillus. IMPORTANCE Pathogen R. solanacearum causes bacterial wilt disease in many crops. There is no chemical bactericide that can control bacterial wilt disease. It is vital to find antagonistic microorganisms and antibacterial substances that can efficiently control bacterial wilt disease. B. amyloliquefaciens WH1 could inhibit the growth of R. solanacearum. Via genetic mutation, it was found that difficidin and to a minor extent bacillibactin produced by WH1 acted efficiently against R. solanacearum. The transcription factor Spo0A regulated the synthesis of difficidin. Phosphorylation of Spo0A affected the production of difficidin. Increasing the phosphorylation level of Spo0A improved the difficidin production and antibacterial activity. In-depth analysis of the regulation mechanism of antibiotic difficidin is meaningful for enhancing the control efficiency of WH1. B. amyloliquefaciens WH1 and the antibacterial substances have vast application potential in controlling bacterial wilt disease.
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Affiliation(s)
- Na Liu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Huiwan Sun
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Zhengyu Tang
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Yuqing Zheng
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Gaofu Qi
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Xiuyun Zhao
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, China
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Bai X, Li Q, Zhang D, Zhao Y, Zhao D, Pan Y, Wang J, Yang Z, Zhu J. Bacillus velezensis Strain HN-Q-8 Induced Resistance to Alternaria solani and Stimulated Growth of Potato Plant. BIOLOGY 2023; 12:856. [PMID: 37372140 DOI: 10.3390/biology12060856] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
Bacillus velezensis HN-Q-8, isolated in our previous study, has an antagonistic effect on Alternaria solani. After being pretreated with a fermentation liquid with HN-Q-8 bacterial cell suspensions, the potato leaves inoculated with A. solani displayed smaller lesion areas and less yellowing than the controls. Interestingly, the activity levels of superoxide dismutase, peroxidase, and catalase in potato seedlings were enhanced by the addition of the fermentation liquid with bacterial cells. Additionally, the overexpression of key genes related to induced resistance in the Jasmonate/Ethylene pathway was activated by the addition of the fermentation liquid, suggesting that the HN-Q-8 strain induced resistance to potato early blight. In addition, our laboratory and field experiments showed that the HN-Q-8 strain can promote potato seedling growth and significantly increase tuber yield. The root activity and chlorophyll content of potato seedlings were significantly increased along with the levels of indole acetic acid, gibberellic acid 3, and abscisic acid upon addition of the HN-Q-8 strain. The fermentation liquid with bacterial cells was more efficient in inducing disease resistance and promoting growth than bacterial cell suspensions alone or the fermentation liquid without bacterial cells. Thus, the B. velezensis HN-Q-8 strain is an effective bacterial biocontrol agent, augmenting the options available for potato cultivation.
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Affiliation(s)
- Xuefei Bai
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Qian Li
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Dai Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Yi Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Dongmei Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Yang Pan
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Jinhui Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Zhihui Yang
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
| | - Jiehua Zhu
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
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10
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Wu G, Zhou J, Zheng J, Abdalmegeed D, Tian J, Wang M, Sun S, Sedjoah RCAA, Shao Y, Sun S, Xin Z. Construction of lipopeptide mono-producing Bacillus strains and comparison of their antimicrobial activity. FOOD BIOSCI 2023; 53:102813. [DOI: 10.1016/j.fbio.2023.102813] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
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11
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Yu YY, Zhang YY, Wang T, Huang TX, Tang SY, Jin Y, Mi DD, Zheng Y, Niu DD, Guo JH, Jiang CH. Kurstakin Triggers Multicellular Behaviors in Bacillus cereus AR156 and Enhances Disease Control Efficacy Against Rice Sheath Blight. PLANT DISEASE 2023:PDIS01220078RE. [PMID: 36205689 DOI: 10.1094/pdis-01-22-0078-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Kurstakin is the latest discovered family of lipopeptides secreted by Bacillus spp. In this study, the effects of kurstakin on the direct antagonism, multicellularity, and disease control ability of Bacillus cereus AR156 were explored. An insertion mutation in the nonribosomal peptide synthase responsible for kurstakin synthesis led to a significant reduction of antagonistic ability of AR156 against the plant-pathogenic fungi Rhizoctonia solani, Ascochyta citrullina, Fusarium graminearum, and F. oxysporum f. sp. cubense. The loss of kurstakin synthesis ability significantly impaired the swarming motility of AR156 and reduced biofilm formation and amyloid protein accumulation. Although the loss of kurstakin synthesis ability did not reduce the competitiveness of AR156 under laboratory conditions, the colonization and environmental adaptability of the mutant was significantly weaker than that of wild-type AR156 on rice leaves. The cell surface of wild-type AR156 colonizing the leaf surface was covered by a thick biofilm matrix under a scanning electron microscope, but not the mutant. The colonization ability on rice roots and control efficacy against rice sheath blight disease of the mutant were also impaired. Thus, kurstakin participates in the control of plant diseases by B. cereus AR156 through directly inhibiting the growth of pathogenic fungi and improving long-term environmental adaptability and colonization of AR156 on the host surface by triggering multicellularity. This study explored the multiple functions of kurstakin in plant disease control by B. cereus.
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Affiliation(s)
- Yi-Yang Yu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Yi-Yuan Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Ting Wang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Tao-Xiang Huang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Shu-Ya Tang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Yu Jin
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Dan-Dan Mi
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Ying Zheng
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Dong-Dong Niu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Jian-Hua Guo
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
| | - Chun-Hao Jiang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Disease and Pests, Ministry of Education; Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture; and Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing 210095, China
- Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China
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12
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Miao CH, Wang XF, Qiao B, Xu QM, Cao CY, Cheng JS. Artificial consortia of Bacillus amyloliquefaciens HM618 and Bacillus subtilis for utilizing food waste to synthetize iturin A. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:72628-72638. [PMID: 35612705 DOI: 10.1007/s11356-022-21029-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Food waste is a cheap and abundant organic resource that can be used as a substrate for the production of the broad-spectrum antifungal compound iturin A. To increase the efficiency of food waste biotransformation, different artificial consortia incorporating the iturin A producer Bacillus amyloliquefaciens HM618 together with engineered Bacillus subtilis WB800N producing lipase or amylase were constructed. The results showed that recombinant B. subtilis WB-A13 had the highest amylase activity of 23406.4 U/mL, and that the lipase activity of recombinant B. subtilis WB-L01 was 57.5 U/mL. When strain HM618 was co-cultured with strain WB-A14, the higher yield of iturin A reached to 7.66 mg/L, representing a 32.9% increase compared to the pure culture of strain HM618. In the three-strain consortium comprising strains HM618, WB-L02, and WB-A14 with initial OD600 values of 0.2, 0.15, and 0.15, respectively, the yield of iturin A reached 8.12 mg/L, which was 38.6% higher than the control. Taken together, artificial consortia of B. amyloliquefaciens and recombinant B. subtilis can produce an increased yield of iturin A, which provides a new strategy for the valorization of food waste.
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Affiliation(s)
- Chang-Hao Miao
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Xiao-Feng Wang
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Bin Qiao
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Qiu-Man Xu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Binshuixi Road 393, Xiqing District, Tianjin, 300387, People's Republic of China
| | - Chun-Yang Cao
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China
| | - Jing-Sheng Cheng
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China.
- SynBio Research Platform, Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin, 300350, People's Republic of China.
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13
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Assessment of Lipopeptide Mixtures Produced by Bacillus subtilis as Biocontrol Products against Apple Scab ( Venturia inaequalis). Microorganisms 2022; 10:microorganisms10091810. [PMID: 36144412 PMCID: PMC9501572 DOI: 10.3390/microorganisms10091810] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/29/2022] [Accepted: 09/05/2022] [Indexed: 02/03/2023] Open
Abstract
Apple scab is an important disease conventionally controlled by chemical fungicides, which should be replaced by more environmentally friendly alternatives. One of these alternatives could be the use of lipopeptides produced by Bacillus subtilis. The objective of this work is to study the action of the three families of lipopeptides and different mixtures of them in vitro and in vivo against Venturia inaequalis. Firstly, the antifungal activity of mycosubtilin/surfactin and fengycin/surfactin mixtures was determined in vitro by measuring the median inhibitory concentration. Then, the best lipopeptide mixture ratio was produced using Design of Experiment (DoE) to optimize the composition of the culture medium. Finally, the lipopeptides mixtures efficiency against V. inaequalis was assessed in orchards as well as the evaluation of the persistence of lipopeptides on apple. In vitro tests show that the use of fengycin or mycosubtilin alone is as effective as a mixture, with the 50–50% fengycin/surfactin mixture being the most effective. Optimization of culture medium for the production of fengycin/surfactin mixture shows that the best composition is glycerol coupled with glutamic acid. Finally, lipopeptides showed in vivo antifungal efficiency against V. inaequalis regardless of the mixture used with a 70% reduction in the incidence of scab for both mixtures (fengycin/surfactin or mycosubtilin/surfactin). The reproducibility of the results over the two trial campaigns was significantly better with the mycosubtilin/surfactin mixture. The use of B. subtilis lipopeptides to control this disease is very promising.
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14
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Xu X, Wang Y, Lei T, Sohail MA, Wang J, Wang H. Synergistic Effects of Bacillus amyloliquefaciens SDTB009 and Difenoconazole on Fusarium Wilt of Tomato. PLANT DISEASE 2022; 106:2165-2171. [PMID: 35077231 DOI: 10.1094/pdis-12-21-2650-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fusarium wilt is a destructive and widespread disease of tomatoes in China, and currently, there are no effective and environmentally friendly control measures. Combining biological control agents with fungicides has become an executable method for disease control. Here, Bacillus amyloliquefaciens SDTB009 showed excellent in vitro antagonistic activity against Fusarium oxysporum and tolerance to high concentrations of difenoconazole (200 mg/liter) in vitro. The combination of SDTB009 and difenoconazole exhibited more effectiveness in mycelial growth inhibition than either treatment alone. Compared with that in the SDTB009 bulk solution in vitro (5.22 g/liter), surfactin titer reached 7.15 g/liter in the 100 mg/liter of difenoconazole-containing medium. Interestingly, the upregulation of 20 genes in the surfactin biosynthesis pathway from 2-fold to 4-fold was observed, explaining the synergistic effect. The SDTB009 combined with varying concentrations of difenoconazole (60, 120, and 150 g a.i./ha) showed a synergistic effect in two consecutive years of field trials. These results show that the integration of difenoconazole with the biocontrol agent B. amyloliquefaciens SDTB009 synergistically increases the control efficacy of the fungicide against tomato Fusarium wilt.
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Affiliation(s)
- Xueming Xu
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
- Lianyungang Technical College, Lianyungang 222006, China
| | - Yongqiang Wang
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Ting Lei
- China Tobacco Qiannan Co. Ltd., Qiannan 558000, China
| | - Muhammad Aamir Sohail
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jie Wang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of the Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Hongyan Wang
- Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, China
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15
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Liu S, Liu H, Zhou L, Cheng Z, Wan J, Pan Y, Xu G, Huang F, Wang M, Xiong Y, Hu G. Enhancement of antibacterial and growth‐promoting effects of
Paenibacillus Polymyxa
by optimising its fermentation process. J Appl Microbiol 2022; 133:2954-2965. [DOI: 10.1111/jam.15750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Shoude Liu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Bioengineering Wuhan Institute of Technology Wuhan China
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Huamei Liu
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Li Zhou
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Zhiguo Cheng
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Jun Wan
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Yu Pan
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Guang Xu
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Fang Huang
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Meng Wang
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Yuanyuan Xiong
- Department of Research and Development Wuhan Kernel Bio‐tech Co., Ltd. Wuhan China
| | - Guoyuan Hu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Bioengineering Wuhan Institute of Technology Wuhan China
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16
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Wang X, Liang L, Shao H, Ye X, Yang X, Chen X, Shi Y, Zhang L, Xu L, Wang J. Isolation of the Novel Strain Bacillus amyloliquefaciens F9 and Identification of Lipopeptide Extract Components Responsible for Activity against Xanthomonas citri subsp. citri. PLANTS (BASEL, SWITZERLAND) 2022; 11:457. [PMID: 35161438 PMCID: PMC8840523 DOI: 10.3390/plants11030457] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/24/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Citrus canker, caused by Xanthomonas citri subsp. citri (Xcc), is a quarantine disease that seriously affects citrus production worldwide. The use of microorganisms and their products for biological control has been proven to be effective in controlling Xanthomonas disease. In this study, a novel Xcc antagonistic strain was isolated and identified as Bacillus amyloliquefaciens F9 by morphological and molecular analysis. The lipopeptide extract of B. amyloliquefaciens F9 (F9LE) effectively inhibited the growth of Xcc in an agar diffusion assay and restrained the occurrence of canker lesions in a pathogenicity test under greenhouse conditions. Consistent with these findings, F9LE treatment significantly inhibited the production of extracellular enzymes in Xcc cells and induced cell wall damage, with leakage of bacterial contents revealed by scanning electron microscopy and transmission electron microscopy analyses. In addition, F9LE also showed strong antagonistic activity against a wide spectrum of plant pathogenic bacteria and fungi. Furthermore, using electrospray ionization mass spectrometry analysis, the main antimicrobial compounds of strain F9 were identified as three kinds of lipopeptides, including homologues of surfactin, fengycin, and iturin. Taken together, our results show that B. amyloliquefaciens F9 and its lipopeptide components have the potential to be used as biocontrol agents against Xcc, and other plant pathogenic bacteria and fungi.
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Affiliation(s)
- Xin Wang
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Liqiong Liang
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Hang Shao
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Xiaoxin Ye
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Xiaobei Yang
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Xiaoyun Chen
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Yu Shi
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
| | - Lianhui Zhang
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China
| | - Linghui Xu
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China
| | - Junxia Wang
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China; (X.W.); (L.L.); (H.S.); (X.Y.); (X.Y.); (X.C.); (Y.S.); (L.Z.)
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China
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17
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Antimicrobial Bacillus: Metabolites and Their Mode of Action. Antibiotics (Basel) 2022; 11:antibiotics11010088. [PMID: 35052965 PMCID: PMC8772736 DOI: 10.3390/antibiotics11010088] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 12/12/2022] Open
Abstract
The agricultural industry utilizes antibiotic growth promoters to promote livestock growth and health. However, the World Health Organization has raised concerns over the ongoing spread of antibiotic resistance transmission in the populace, leading to its subsequent ban in several countries, especially in the European Union. These restrictions have translated into an increase in pathogenic outbreaks in the agricultural industry, highlighting the need for an economically viable, non-toxic, and renewable alternative to antibiotics in livestock. Probiotics inhibit pathogen growth, promote a beneficial microbiota, regulate the immune response of its host, enhance feed conversion to nutrients, and form biofilms that block further infection. Commonly used lactic acid bacteria probiotics are vulnerable to the harsh conditions of the upper gastrointestinal system, leading to novel research using spore-forming bacteria from the genus Bacillus. However, the exact mechanisms behind Bacillus probiotics remain unexplored. This review tackles this issue, by reporting antimicrobial compounds produced from Bacillus strains, their proposed mechanisms of action, and any gaps in the mechanism studies of these compounds. Lastly, this paper explores omics approaches to clarify the mechanisms behind Bacillus probiotics.
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Moreno-Velandia CA, Ongena M, Cotes AM. Effects of Fengycins and Iturins on Fusarium oxysporum f. sp. physali and Root Colonization by Bacillus velezensis Bs006 Protect Golden Berry Against Vascular Wilt. PHYTOPATHOLOGY 2021; 111:2227-2237. [PMID: 34032523 DOI: 10.1094/phyto-01-21-0001-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bacillus velezensis Bs006 has shown antagonistic activity on Fusarium oxysporum f. sp. physali and biocontrol activity against Fusarium wilt (FW) in golden berry (Physalis peruviana). We hypothesized that strain Bs006 has the ability to synthesize antimicrobial cyclic lipopeptides (CLPs) like other members of the same species. However, if so, the real effects of CLPs on F. oxysporum f. sp. physali and their potential as a biocontrol tool against Physalis-FW have not been elucidated. In this study the CLPs profile of Bs006 in liquid culture and antagonist-plant-pathogen interactions were characterized. Also, the potential effects of supernatant free of bacteria against F. oxysporum f. sp. physali and FW were explored and compared with the effects of pure CLPs. Ultraperformance liquid chromatography-electrospray ionization-mass spectrometry analysis revealed the capacity of Bs006 to synthesize homologous compounds of iturins, surfactins, and fengycins in liquid culture and on the inhibition zone against F. oxysporum f. sp. physali in dual confrontation tests. Bs006 supernatant reduced the germination and growth of F. oxysporum f. sp. physali and caused vacuolization, swelling, and lysis of F. oxysporum f. sp. physali cells in a concentration-dependent manner. Pure fengycins affected the development of F. oxysporum f. sp. physali from 11 mg/liter and iturins from 21 mg/liter. In a gnotobiotic system, Bs006 colonized the root surface of golden berry, inhibited the growth of F. oxysporum f. sp. physali, and produced CLPs. Individual application of Bs006 and supernatant protected the plants from F. oxysporum f. sp. physali infections by 37 to 53%, respectively. Meanwhile, fengycins reduced the disease progress by 39%. These results suggest further studies to select an optimum combination of Bs006 and supernatant or CLPs, which might be a good option as biofungicide against F. oxysporum f. sp. physali.
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Affiliation(s)
- Carlos Andrés Moreno-Velandia
- Corporación Colombiana de Investigación Agropecuaria, AGROSAVIA, Centro de Investigación Tibaitatá, Mosquera, Colombia
| | - Marc Ongena
- Microbial Processes and Interactions Laboratory, Terra Teaching and Research Center, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
| | - Alba Marina Cotes
- Corporación Colombiana de Investigación Agropecuaria, AGROSAVIA, Centro de Investigación Tibaitatá, Mosquera, Colombia
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Dimopoulou A, Theologidis I, Varympopi A, Papafotis D, Mermigka G, Tzima A, Panopoulos NJ, Skandalis N. Shifting Perspectives of Translational Research in Bio-Bactericides: Reviewing the Bacillus amyloliquefaciens Paradigm. BIOLOGY 2021; 10:biology10111202. [PMID: 34827195 PMCID: PMC8614995 DOI: 10.3390/biology10111202] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary The continuous reduction of approved conventional microbicides, due to health concerns and the development of plant-pathogen resistance, has been urged for the use of safe alternatives in crop protection. Several beneficial bacterial species, termed biological control agents, are currently used in lieu of chemical pesticides. The approach to select such bacterial species and manufacture commercial products has been based on their biocontrol effect under optimal growth conditions, which is far from the real nutrient-limited field conditions of plant niches. It’s important to determine the complex interactions that occur among BCAs, plant host and niche microbiome to fully understand and exploit the potential of biological control agents. Furthermore, it’s crucial to acknowledge the environmental impact of their long-term use. Abstract Bacterial biological control agents (BCAs) have been increasingly used against plant diseases. The traditional approach to manufacturing such commercial products was based on the selection of bacterial species able to produce secondary metabolites that inhibit mainly fungal growth in optimal media. Such species are required to be massively produced and sustain long-term self-storage. The endpoint of this pipeline is large-scale field tests in which BCAs are handled as any other pesticide. Despite recent knowledge of the importance of BCA-host-microbiome interactions to trigger plant defenses and allow colonization, holistic approaches to maximize their potential are still in their infancy. There is a gap in scientific knowledge between experiments in controlled conditions for optimal BCA and pathogen growth and the nutrient-limited field conditions in which they face niche microbiota competition. Moreover, BCAs are considered to be safe by competent authorities and the public, with no side effects to the environment; the OneHealth impact of their application is understudied. This review summarizes the state of the art in BCA research and how current knowledge and new biotechnological tools have impacted BCA development and application. Future challenges, such as their combinational use and ability to ameliorate plant stress are also discussed. Addressing such challenges would establish their long-term use as centerfold agricultural pesticides and plant growth promoters.
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Affiliation(s)
- Anastasia Dimopoulou
- Institute of Molecular Biology and Biotechnology, FORTH, 70013 Heraklion, Greece; (A.D.); (G.M.)
| | - Ioannis Theologidis
- Laboratory of Pesticides’ Toxicology, Benaki Phytopathological Institute, 14561 Athens, Greece;
| | - Adamantia Varympopi
- Enzyme and Microbial Biotechnology Unit, Department of Biology, National and Kapodistrian University of Athens, 15784 Athens, Greece; (A.V.); (D.P.)
| | - Dimitris Papafotis
- Enzyme and Microbial Biotechnology Unit, Department of Biology, National and Kapodistrian University of Athens, 15784 Athens, Greece; (A.V.); (D.P.)
| | - Glykeria Mermigka
- Institute of Molecular Biology and Biotechnology, FORTH, 70013 Heraklion, Greece; (A.D.); (G.M.)
| | - Aliki Tzima
- Laboratory of Plant Pathology, Department of Crop Production, School of Agricultural Production Infrastructure and Environment, Faculty of Crop Science, Agricultural University of Athens, 11855 Athens, Greece;
| | - Nick J. Panopoulos
- Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720, USA;
| | - Nicholas Skandalis
- Health Sciences Campus, Keck School of Medicine, University of Southern California, 1441 Eastlake Ave, Los Angeles, CA 90033, USA
- Correspondence:
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20
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Genomic insights into biocontrol potential of Bacillus stercoris LJBS06. 3 Biotech 2021; 11:458. [PMID: 34692367 DOI: 10.1007/s13205-021-03000-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/25/2021] [Indexed: 01/20/2023] Open
Abstract
Bacillus spp. have been widely reported with the ability to control plant diseases. In this work, we analyzed the whole genome of LJBS06, which was isolated from grapevine rhizosphere soil. In view of physiological and biochemical characteristics, genome data, and phylogenetic analysis of 16S rRNA, LJBS06 was affiliated with Bacillus stercoris. LJBS06 showed antagonistic activities against a variety of plant pathogens. The inhibition rate of Magnaporthe oryzae was up to 75.05% and the inhibition rates of Colletotrichum gloeosporioides, Coniothyrium diplodiella, and Botrytis cinerea were all above 50% in the plate assays. The genome of LJBS06 had a 4,154,362-bp circular chromosome, with an average GC content of 43.96%, containing an 82,935-bp plasmid with a GC content of 35.18%. The circular chromosome of LJBS06 contained 4231 protein-coding genes, 30 rRNA genes, and 87 tRNA genes, including genes related to the synthesis of plant defense-related enzymes and the promotion of plant growth. Meanwhile, 11 gene clusters involved in biosynthesis of secondary metabolites were present in the genome of LJBS06. In conclusion, our findings indicated that LJBS06 strain had the necessary genetic machinery to control plant pathogens and provided insights for future studies of the biocontrol mechanisms of B. stercoris LJBS06. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-03000-6.
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21
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Chen M, Zheng M, Chen Y, Xiao R, Zheng X, Liu B, Wang J, Zhu Y. Effect of metal ions on lipopeptide secretion from Bacillus subtilis strain FJAT-4: Negative regulation by Ca 2. J Appl Microbiol 2021; 132:2167-2176. [PMID: 34716970 DOI: 10.1111/jam.15347] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 10/24/2021] [Indexed: 11/27/2022]
Abstract
AIMS This study aimed to investigate the effect of metal ions on lipopeptide production by Bacillus subtilis strain FJAT-4 and the mechanism of negative regulation by Ca2+ . METHODS AND RESULTS The quantitative measurement of lipopeptides in response to K+ , Na+ , Mg2+ and Ca2+ addition was carried out by LC-MS. The contents of fengycin and surfactin varied within the range of 116.24-129.80 mg/L and 34.03-63.11 mg/L in the culture media containing K+ , Na+ and Mg2+ , while the levels were 0.86 and 0.63 mg/L in the media containing Ca2+ . Ca2+ at a high concentration (45 mM) did not adversely affect the growth of strain FJAT-4, but caused significant downregulation of lipopeptide synthesis-related gene expression, corresponding to a decrease in lipopeptide production. This inhibition by Ca2+ was further investigated by proteomic analysis. In total, 112 proteins were upregulated and 524 proteins were downregulated in the presence of additional Ca2+ (45 mM). Among these differentially expressed proteins (DEPs), 28 were related to phosphotransferase activity, and 42 were related to kinase activity. The proteomics results suggested that altered levels of three two-component signal-transduction systems (ResD/ResE, PhoP/PhoR and DegU/DegS) might be involved in the control of expression of the fen and srfA operons of FJAT-4 under high calcium stress. CONCLUSIONS The Ca2+ at the high concentration (45 mM) triggers a decrease in lipopeptide production, which might be attributed to the regulation of three two-component signal-transduction systems ResD/ResE, PhoP/PhoR and DegU/DegS. SIGNIFICANCE AND IMPACT OF THE STUDY The regulatory effect of calcium on the expression of genes encoding lipopeptide synthetases can be applied to optimize the production of lipopeptides.
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Affiliation(s)
- Meichun Chen
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Meixia Zheng
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Yanping Chen
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Rongfeng Xiao
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Xuefang Zheng
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Bo Liu
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Jieping Wang
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Yujing Zhu
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
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22
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Chu D, Ilyas N, Peng L, Wang X, Wang D, Xu Z, Gao Q, Tan X, Zhang C, Li Y, Yuan Y. Genomic insights on fighting bacterial wilt by a novel Bacillus amyloliquefaciens strain Cas02. Microb Biotechnol 2021; 15:1152-1167. [PMID: 34570959 PMCID: PMC8966013 DOI: 10.1111/1751-7915.13925] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 11/28/2022] Open
Abstract
Bacterial wilt, caused by the Ralstonia solanacearum, can infect several economically important crops. However, the management strategies available to control this disease are limited. Plant growth-promoting rhizobacteria (PGPR) have been considered promising biocontrol agents. In this study, Bacillus amyloliquefaciens strain Cas02 was isolated from the rhizosphere soil of healthy tobacco plants and evaluated for its effect on plant growth promotion and bacterial wilt suppression. Strain Cas02 exhibited several growth-promoting-related features including siderophore production, cellulase activity, protease activity, ammonia production and catalase activity. Moreover, strain Cas02 showed a significant inhibitory growth effect on R. solanacearum, and its active substances were separated and identified to be macrolactin A and macrolactin W by HPLC-DAD-ESI-MS/MS. Both greenhouse and field experiments demonstrated a good performance of Cas02 in plant growth promotion and bacterial wilt suppression. To explore the underlying genetic mechanisms, complete genome sequencing was performed and the gene clusters responsible for antibacterial metabolites expression were identified. Overall, these findings suggest that the strain Cas02 could be a potential biocontrol agent in bacterial wilt management and a source of antimicrobial compounds for further exploitation.
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Affiliation(s)
- Depeng Chu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Naila Ilyas
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Lijuan Peng
- Yunnan Tobacco Quality Supervision and Test Station, Kunming, 650106, China
| | - Xiaoqiang Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Dongkun Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Zongchang Xu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Qiang Gao
- Yishui Agricultural Technology Demonstration Park, Linyi, 276400, China
| | - Xiaolei Tan
- Yishui Agricultural Technology Demonstration Park, Linyi, 276400, China
| | - Chengsheng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Yiqiang Li
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Yuan Yuan
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
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Hu J, Zheng M, Dang S, Shi M, Zhang J, Li Y. Biocontrol Potential of Bacillus amyloliquefaciens LYZ69 Against Anthracnose of Alfalfa ( Medicago sativa). PHYTOPATHOLOGY 2021; 111:1338-1348. [PMID: 33325723 DOI: 10.1094/phyto-09-20-0385-r] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Anthracnose is a destructive disease of alfalfa (Medicago sativa) that causes severe yield losses. Biological control can be an effective and eco-friendly approach to control this alfalfa disease. In the present study, Bacillus amyloliquefaciens LYZ69, previously isolated from healthy alfalfa roots, showed a strong in vitro antifungal activity against Colletotrichum truncatum, an important causal agent of anthracnose of alfalfa. The strain LYZ69 protected alfalfa plants (biocontrol efficacy of 82.59%) from anthracnose under greenhouse conditions. The cell-free culture (CFC) of LYZ69 (20%, vol/vol) caused 60 and 100% inhibition of mycelial growth and conidial germination, respectively. High-performance liquid chromatography tandem mass spectrometry separated and identified cyclic lipopeptides (LPs) such as bacillomycin D and fengycin in the CFC of LYZ69. Light microscopy and scanning electron microscopy revealed that the mixture of cyclic LPs produced by LYZ69 caused drastic changes in mycelial morphology. Fluorescence microscopy showed that the LPs induced reactive oxygen species accumulation and caused apoptosis-like cell death in C. truncatum hyphae. In summary, our findings provide evidence to support B. amyloliquefaciens LYZ69 as a promising candidate for the biological control of anthracnose in alfalfa.
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Affiliation(s)
- Jinling Hu
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730020, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Mingzhu Zheng
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730020, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Shuzhong Dang
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730020, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Min Shi
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730020, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Jinlin Zhang
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730020, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Yanzhong Li
- State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730020, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou 730020, China
- Engineering Research Center of Grassland Industry, Ministry of Education, Lanzhou University, Lanzhou 730020, China
- Gansu Tech Innovation Center of Western China Grassland Industry, Lanzhou University, Lanzhou 730020, China
- National Demonstration Center for Experimental Grassland Science Education, Lanzhou University, Lanzhou 730020, China
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Moreno-Velandia CA, Ongena M, Kloepper JW, Cotes AM. Biosynthesis of Cyclic Lipopeptides by Bacillus velezensis Bs006 and its Antagonistic Activity are Modulated by the Temperature and Culture Media Conditions. Curr Microbiol 2021; 78:3505-3515. [PMID: 34292378 DOI: 10.1007/s00284-021-02612-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 07/09/2021] [Indexed: 11/30/2022]
Abstract
Antagonistic activity of strains from Bacillus species has made them among the preferred agricultural biological control agents against phytopathogenic fungi. These microorganisms' success is mostly based on the production of antagonistic secondary metabolites, mainly those of the non-ribosomal cyclic lipopeptides (CLPs) nature, which can affect phytopathogens directly (iturins and fengycins) or indirectly (surfactins and fengycins). However, abiotic factors in the target site can influence the behavior of the biocontrol traits, but to date, few studies attempting to decipher this kind of interaction have been conducted. This work aimed to evaluate the effect of temperature and culture medium on growth, antagonistic activity against Fusarium oxysporum f. sp. physali (Foph), and the profile of CLPs produced by Bacillus velezensis Bs006. The data showed that measured traits in Bs006 varied with temperature and medium interaction. The concentration of CLPs, as well as the antagonistic activity against Foph, was increased as the nutritional wealth, temperature, and time of incubation increased. The concentration of fengycins and iturins was higher than surfactins at high temperatures. However, a bacteriostatic effect was detected with a combination of Landy medium and 15 °C, which prevented both the biosynthesis of CLPs and the antagonistic activity. The results of this work highlight the importance of abiotic conditions of the target site where a biocontrol agent will be applied to stay active and develop its full antagonistic potential. This response by Bs006 could partly explain the variability of its biocontrol efficacy in the Foph-golden berry pathosystem.
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Affiliation(s)
- Carlos A Moreno-Velandia
- Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA, Km 14 vía Bogotá a Mosquera, 250047, Mosquera, Colombia.
| | - Marc Ongena
- Microbial Processes and Interactions Laboratory, Terra Teaching and Research Center, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2 5030, Gembloux, Belgium
| | - Joseph W Kloepper
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, 36849, USA
| | - Alba M Cotes
- Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA, Km 14 vía Bogotá a Mosquera, 250047, Mosquera, Colombia
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Production, Purification and Characterization of ‘Iturin A-2’ a Lipopeptide with Antitumor Activity from Chinese Sauerkraut Bacterium Bacillus velezensis T701. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10241-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Chen N, Liu Y, Qin P, Li Y, Ma D, Li J, Shi T, Zhu Z. Antibacterial Activities of Bacillus amyloliquefaciens DQB-1 Isolated From the Cecum of Dezhou Donkeys. J Equine Vet Sci 2021; 102:103616. [PMID: 34119201 DOI: 10.1016/j.jevs.2021.103616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 10/21/2022]
Abstract
The microorganisms in the cecum of donkeys share similar functions as those in the rumen of cattle. Transformation of the cecal microenvironment by probiotics plays an important role in the health and growth of donkeys. In order to screen out excellent donkey probiotic preparations, in this study, we isolated an antibacterial strain of Bacillus amyloliquefaciens (designated as DQB-1) from the cecum of Dezhou donkey. The strain was assessed in terms of antibacterial activity, antibacterial substance analysis, and stability. The results show that, the Bacillus amyloliquefaciens DQB-1 exhibited protease production activity and can significantly inhibit the growth of bacterial and fungal pathogens. The strongest antibacterial substance would be obtained after 24 hours of growth. The most suitable storage temperature for antibacterial extracts is -20 °C. The antibacterial substance produced by Bacillus amyloliquefaciens DQB-1 isolated from donkeys has strong antibacterial activity, protease-producing activity and good stability. Therefore, it can be developed as a probiotic preparation for preventing infectious diseases in donkey farms.
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Affiliation(s)
- Nannan Chen
- College of Animal Science and Veterinary Medicine, HeiLongJiang BaYi Agricultural University, Daqing, China; Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, China
| | - Yu Liu
- College of Animal Science and Veterinary Medicine, HeiLongJiang BaYi Agricultural University, Daqing, China
| | - Pingwei Qin
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, China
| | - Yang Li
- College of Engineer, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Diyang Ma
- Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Juan Li
- Agricultural International Cooperation and Exchange Station of Shanxi Province, Taiyuan, China
| | - Tongrui Shi
- Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar, China
| | - Zhanbo Zhu
- College of Animal Science and Veterinary Medicine, HeiLongJiang BaYi Agricultural University, Daqing, China.
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Evaluation of seed associated endophytic bacteria from tolerant chilli cv. Firingi Jolokia for their biocontrol potential against bacterial wilt disease. Microbiol Res 2021; 248:126751. [PMID: 33839507 DOI: 10.1016/j.micres.2021.126751] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 03/05/2021] [Accepted: 03/19/2021] [Indexed: 12/26/2022]
Abstract
In this study, the seed endosphere of a bacterial wilt tolerant chilli cv. Firingi Jolokia was explored in order to find effective agents for bacterial wilt disease biocontrol. A total of 32 endophytic bacteria were isolated from freshly collected seeds and six isolates were selected based on R. solanacearum inhibition assay. These isolates were identified as Bacillus subtilis (KJ-2), Bacillus velezensis (KJ-4), Leuconostoc mesenteroides (KP-1), Lactococcus lactis (LB-3), Bacillus amyloliquefaciens (WK-2), and Bacillus subtilis (WK-3) by 16S rRNA gene sequencing. In the in planta R. solanacearum inhibition assay carried out by seedling root bacterization method, Bacillus subtilis (KJ-2) exhibited highest biocontrol efficacy of 86.6 % on 7th day post R. solanacearum inoculation and a minimum biocontrol efficacy of 52.9 % was noted for Leuconostoc mesenteroides (KP-1). GC-HRMS analysis detected several known antimicrobial compounds in the extract of the culture supernatant of Bacillus subtilis (KJ-2); which may contribute to inhibition of R. solanacearum. In the growth promotion assay conducted using these isolates, only two of them namely Bacillus subtilis (KJ-2) and Bacillus amyloliquefaciens (WK-2) showed growth promotion in true leafed tomato plants. All the selected seed endophytic isolates were able to control bacterial wilt of tomato at the seedling stage and Bacillus subtilis (KJ-2) was found to be most effective in controlling the disease. The results of the present study highlighted that seed endosphere of bacterial wilt tolerant cultivar is a rich source of R. solanacearum antagonizing bacterial isolates.
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28
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Wang B, Liu C, Yang X, Wang Y, Zhang F, Cheng H, Zhang L, Liu H. Genomics-guided isolation and identification of active secondary metabolites of Bacillus velezensis BA-26. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1934540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Buqing Wang
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Laboratory of Microbiology, Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province, Shijiazhuang, Hebei, PR China
| | - Chao Liu
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, PR China
| | - Xuemiao Yang
- Department of Microbiology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, PR China
| | - Yana Wang
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Laboratory of Microbiology, Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province, Shijiazhuang, Hebei, PR China
| | - Feiyan Zhang
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Laboratory of Microbiology, Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province, Shijiazhuang, Hebei, PR China
| | - Huicai Cheng
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Laboratory of Microbiology, Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province, Shijiazhuang, Hebei, PR China
| | - Liping Zhang
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Laboratory of Microbiology, Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province, Shijiazhuang, Hebei, PR China
| | - Hongwei Liu
- Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, Shijiazhuang, Hebei, PR China
- Laboratory of Microbiology, Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province, Shijiazhuang, Hebei, PR China
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Sun M, Ye S, Xu Z, Wan L, Zhao Y. Endophytic Bacillus altitudinis Q7 from Ginkgo biloba inhibits the growth of Alternaria alternata in vitro and its inhibition mode of action. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1936639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Mingqi Sun
- Department of Food Science and Engineering, School of Food Science, Dalian Polytechnic University, Dalian, Liaoning, PR China
| | - Shuhong Ye
- Department of Food Science and Engineering, School of Food Science, Dalian Polytechnic University, Dalian, Liaoning, PR China
| | - Zhichao Xu
- Department of Food Science and Engineering, School of Food Science, Dalian Polytechnic University, Dalian, Liaoning, PR China
| | - Lu Wan
- Department of Food Science and Engineering, School of Food Science, Dalian Polytechnic University, Dalian, Liaoning, PR China
| | - Yuguang Zhao
- Department of Food Science and Engineering, School of Food Science, Dalian Polytechnic University, Dalian, Liaoning, PR China
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Chen MC, Liu TT, Wang JP, Chen YP, Chen QX, Zhu YJ, Liu B. Strong inhibitory activities and action modes of lipopeptides on lipase. J Enzyme Inhib Med Chem 2020; 35:897-905. [PMID: 32216480 PMCID: PMC7170388 DOI: 10.1080/14756366.2020.1734798] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Lipopeptides have been reported to exhibit anti-obesity effects. In this study, we obtained a Bacillus velezensis strain FJAT-52631 that could coproduce iturins, fengycins, and surfactins. Results showed that the FJAT-52631 crude lipopeptide, purified fengycin, iturin, and surfactin standards exhibited strong inhibition activities against lipase with dose-dependence manners (half maximal inhibitory concentration (IC50) = 0.011, 0.005, 0.056, and 0.005 mg/mL, respectively). Moreover, fengycin and surfactin had the comparable activities with orlistat, but iturin not. It was revealed that the inhibition mechanism and type of the lipopeptides were reversible and competitive. The quenching mechanism of lipase was static and only one binding site between lipase and lipopoeptide was inferred from the fluorescence analysis. The docking analysis displayed that fengycin and surfactin could directly interact with the active amino acid residues (Ser or Asp) of lipase, but not with iturin. Our work suggests that the B. velezensis lipopeptides would have great potential to act as lipase inhibitors.
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Affiliation(s)
- Mei-Chun Chen
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Tian-Tian Liu
- College of Biological Science and Engineering, Xiamen University, Xiamen, China
| | - Jie-Ping Wang
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Yan-Ping Chen
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Qing-Xi Chen
- College of Biological Science and Engineering, Xiamen University, Xiamen, China
| | - Yu-Jing Zhu
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Bo Liu
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, China
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Endophytes from Gnetum gnemon L. can protect seedlings against the infection of phytopathogenic bacterium Ralstonia solanacearum as well as promote plant growth in tomato. Microbiol Res 2020; 238:126503. [DOI: 10.1016/j.micres.2020.126503] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 04/19/2020] [Accepted: 04/25/2020] [Indexed: 02/01/2023]
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Surfactin and fengycin B extracted from Bacillus pumilus W-7 provide protection against potato late blight via distinct and synergistic mechanisms. Appl Microbiol Biotechnol 2020; 104:7467-7481. [DOI: 10.1007/s00253-020-10773-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/16/2020] [Accepted: 07/05/2020] [Indexed: 12/01/2022]
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33
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Chen M, Wang J, Liu B, Zhu Y, Xiao R, Yang W, Ge C, Chen Z. Biocontrol of tomato bacterial wilt by the new strain Bacillus velezensis FJAT-46737 and its lipopeptides. BMC Microbiol 2020; 20:160. [PMID: 32539679 PMCID: PMC7296739 DOI: 10.1186/s12866-020-01851-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 06/09/2020] [Indexed: 01/25/2023] Open
Abstract
Background There is an urgent need to discover biocontrol agents to control bacterial wilt. This study reports on a new lipopeptide-producing biocontrol strain FJAT-46737 and explores its lipopeptidic compounds, and this study investigates the antagonistic effects of these compounds. Results Based on a whole genome sequence analysis, the new strain FJAT-46737 was identified as Bacillus velezensis, and seven gene clusters responsible for the synthesis of bioactive secondary metabolites in FJAT-46737 were predicted. The antimicrobial results demonstrated that FJAT-46737 exhibited broad-spectrum antimicrobial activities in vitro against three bacteria and three fungi. Pot experiments showed that the control efficiencies for tomato bacterial wilt of the whole cultures, the 2-fold diluted supernatants and the crude lipopeptide of FJAT-46737 were 66.2%, 82.0%, and 96.2%, respectively. The above results suggested that one of the antagonistic mechanisms of FJAT-46737 was the secretion of lipopeptides consisting of iturins, fengycins and surfactins. The crude lipopeptides had significant antagonistic activities against several pathogens (including Ralstonia solanacearum, Escherichia coli and Fusarium oxysporum) and fengycins were the major antibacterial components of the lipopeptides against R. solanacearum in vitro. Furthermore, the rich organic nitrogen sources (especially yeast extracts) in the media promoted the production of fengycin and surfactin by FJAT-46737. The secretion of these two lipopeptides was related to temperature fluctuations, with the fengycin content decreasing by 96.6% and the surfactins content increasing by 59.9% from 20 °C to 40 °C. The optimal temperature for lipopeptide production by FJAT-46737 varied between 20 °C and 25 °C. Conclusions The B. velezensis strain FJAT-46737 and its secreted lipopeptides could be used as new sources of potential biocontrol agents against several plant pathogens, and especially the bacterial wilt pathogen R. solanacearum.
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Affiliation(s)
- Meichun Chen
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Jieping Wang
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China.
| | - Bo Liu
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Yujing Zhu
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Rongfeng Xiao
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Wenjing Yang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350001, China
| | - Cibin Ge
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Zheng Chen
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
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Maksimov IV, Singh BP, Cherepanova EA, Burkhanova GF, Khairullin RM. Prospects and Applications of Lipopeptide-Producing Bacteria for Plant Protection (Review). APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820010135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Xiong W, Song Y, Yang K, Gu Y, Wei Z, Kowalchuk GA, Xu Y, Jousset A, Shen Q, Geisen S. Rhizosphere protists are key determinants of plant health. MICROBIOME 2020; 8:27. [PMID: 32127034 PMCID: PMC7055055 DOI: 10.1186/s40168-020-00799-9] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 02/05/2020] [Indexed: 05/18/2023]
Abstract
BACKGROUND Plant health is intimately influenced by the rhizosphere microbiome, a complex assembly of organisms that changes markedly across plant growth. However, most rhizosphere microbiome research has focused on fractions of this microbiome, particularly bacteria and fungi. It remains unknown how other microbial components, especially key microbiome predators-protists-are linked to plant health. Here, we investigated the holistic rhizosphere microbiome including bacteria, microbial eukaryotes (fungi and protists), as well as functional microbial metabolism genes. We investigated these communities and functional genes throughout the growth of tomato plants that either developed disease symptoms or remained healthy under field conditions. RESULTS We found that pathogen dynamics across plant growth is best predicted by protists. More specifically, communities of microbial-feeding phagotrophic protists differed between later healthy and diseased plants at plant establishment. The relative abundance of these phagotrophs negatively correlated with pathogen abundance across plant growth, suggesting that predator-prey interactions influence pathogen performance. Furthermore, phagotrophic protists likely shifted bacterial functioning by enhancing pathogen-suppressing secondary metabolite genes involved in mitigating pathogen success. CONCLUSIONS We illustrate the importance of protists as top-down controllers of microbiome functioning linked to plant health. We propose that a holistic microbiome perspective, including bacteria and protists, provides the optimal next step in predicting plant performance. Video Abstract.
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Affiliation(s)
- Wu Xiong
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
- Ecology and Biodiversity Group, Department of Biology, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Yuqi Song
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Keming Yang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Yian Gu
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Zhong Wei
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China.
| | - George A Kowalchuk
- Ecology and Biodiversity Group, Department of Biology, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Yangchun Xu
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Alexandre Jousset
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
- Ecology and Biodiversity Group, Department of Biology, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Qirong Shen
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Stefan Geisen
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Key Lab of Plant Immunity, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
- Department of Terrestrial Ecology, Netherlands Institute for Ecology (NIOO-KNAW), 6708, PB, Wageningen, The Netherlands
- Laboratory of Nematology, Wageningen University & Research, 6700, ES, Wageningen, The Netherlands
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Abd Alamer IS, Tomah AA, Li B, Zhang JZ. Isolation, Identification and Characterization of Rhizobacteria Strains for Biological Control of Bacterial Wilt (Ralstonia solanacearum) of Eggplant in China. AGRICULTURE 2020; 10:37. [DOI: 10.3390/agriculture10020037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Bacterial wilt of eggplant is the most destructive disease caused by Ralstonia solanacearum throughout the world. Eleven bacterial strains with high antagonistic activity were obtained from 245 rhizobacteria. Based on analysis of morphology, 16S rRNA sequences, fatty acid profiles, gyrA and rpoB genes, they were identified as Pseudomonas putida (IMA3), Paenibacillus polymyxa (IMA5), Bacillus cereus (IMA4, IMA7 and IMA11) and the “operational group Bacillus amyloliquefaciens” (IMA1, IMA2, IMA6, IMA8, IMA9 and IMA10). The lipopeptide compounds produced by each strain also were determined. The biocontrol tests demonstrated that co-inoculation by strain IMA5 and the pathogen gave the greatest biocontrol efficiency of 87.0% and 69.2% 30 and 40 days after co-inoculation, respectively. Plant growth promotion tests revealed that IMA5 markedly promoted eggplant growth, enhancing aboveground seedling length and biomass by 60.8% and by 107.6% and underground root length and biomass by 33.0% and 69.2%, respectively. Hence, strain IMA5 could be considered for developing potential biocontrol agents and for promoting plant growth characteristics, to aid the management of the pathogen R. solanacearum in eggplants.
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Le KD, Kim J, Yu NH, Kim B, Lee CW, Kim JC. Biological Control of Tomato Bacterial Wilt, Kimchi Cabbage Soft Rot, and Red Pepper Bacterial Leaf Spot Using Paenibacillus elgii JCK-5075. FRONTIERS IN PLANT SCIENCE 2020; 11:775. [PMID: 32714339 PMCID: PMC7340725 DOI: 10.3389/fpls.2020.00775] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/15/2020] [Indexed: 05/14/2023]
Abstract
The over and repeated use of chemical bactericides to control plant bacterial diseases has resulted in unwanted effects, such as environmental pollution, residual toxicity, and resistance buildup in bacterial pathogens. Many previous studies have aimed to develop biological control agents to replace chemical bactericides. In this study, the antibacterial efficacy of the fermentation broth of Paenibacillus elgii JCK-5075 and its antibacterial compounds were evaluated against plant pathogenic bacteria, using both in vitro and in vivo bioassays. Pelgipeptins (PGPs) A, B, C, and D that were isolated from P. elgii JCK-5075 displayed broad-spectrum antibacterial activity against various plant pathogenic bacteria. The fermentation broth of P. elgii JCK-5075, at 5-fold dilution, effectively suppressed the development of tomato bacterial wilt, Kimchi cabbage soft rot, and red pepper bacterial leaf spot in pot experiments with control values of 81, 84, and 67%, respectively. PGP-A and C, at 200 μg/ml, were also found to markedly reduce the development of Kimchi cabbage bacterial soft rot by 75% and tomato bacterial wilt by 83%, respectively, and their disease control efficacy was comparable to that of oxolinic acid with control values of 81 and 85%, respectively. Additionally, the antibacterial activity of PGP-C was found to be directly correlated with membrane damage mechanisms. These results indicates that P. elgii JCK-5075 producing PGPs could be used as a biocontrol agent for the control of plant bacterial diseases. This is the first report on the in vitro and in vivo antibacterial activity of PGPs against bacterial plant pathogens.
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Affiliation(s)
- Khanh Duy Le
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Jueun Kim
- Department of Chemistry, Chonnam National University, Gwangju, South Korea
| | - Nan Hee Yu
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Bora Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Chul Won Lee
- Department of Chemistry, Chonnam National University, Gwangju, South Korea
- *Correspondence: Chul Won Lee,
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
- Jin-Cheol Kim,
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