51
|
Ni M, Wu Q, Wang J, Liu WC, Ren JH, Zhang DP, Zhao J, Liu DEW, Rao YH, Lu CG. Identification and comprehensive evaluation of a novel biocontrol agent Bacillus atrophaeus JZB120050. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2018; 53:777-785. [PMID: 30199317 DOI: 10.1080/03601234.2018.1505072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bacillus spp. have long been used as biocontrol agents because of their efficient broad-spectrum antimicrobial activity. We identified a novel strain of Bacillus atrophaeus, named JZB120050, from soil. B. atrophaeus JZB120050 had a strong inhibitory effect against Botrytis cinerea and many other phytopathogens. Gas chromatography-mass spectrometry showed that B. atrophaeus JZB120050 produced many secondary metabolites, such as alkanes, alkenes and acids; some of which were related to pathogen inhibition. Enzyme activity analysis showed that B. atrophaeus JZB120050 secreted cell-wall-degrading enzymes, including chitinase, glucanase and protease, which degraded fungal cell walls. Both the novel glucanase gene bglu and chitinase gene chit1 were cloned and heterologously expressed in Escherichia coli and the products showed strong enzyme activity. In addition, B. atrophaeus JZB120050 secreted siderophores and formed a significant biofilm. Future studies should focus on these antimicrobial factors to facilitate widespread application in the field of agricultural biocontrol.
Collapse
Affiliation(s)
- Mi Ni
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - Qiong Wu
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - Junli Wang
- b Agricultural College, Guangdong Ocean University , Zhanjiang , China
| | - Wei C Liu
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - Jian H Ren
- c Suzhou BioNovoGene Metabolomics Platform , Suzhou , China
| | - Dian P Zhang
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - Juan Zhao
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - DE W Liu
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - Ying H Rao
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| | - Cai G Lu
- a Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences , Beijing , China
| |
Collapse
|
52
|
Toral L, Rodríguez M, Béjar V, Sampedro I. Antifungal Activity of Lipopeptides From Bacillus XT1 CECT 8661 Against Botrytis cinerea. Front Microbiol 2018; 9:1315. [PMID: 29997581 PMCID: PMC6028715 DOI: 10.3389/fmicb.2018.01315] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 05/30/2018] [Indexed: 11/25/2022] Open
Abstract
This work aims to explore the capacity of a Bacillus methylotrophicus (later heterotypic synonym of Bacillus velezensis) strain named XT1 CECT 8661 against the necrotrophic plant pathogen Botrytis cinerea and to identify the compounds responsible for its activity. Q_TOF electrospray mass spectrometry analysis allows us to detect several lipopeptides – surfactin, bacillomycin, and fengycin – in XT1 cultures. In vitro antibiosis studies demonstrated the efficiency of the lipopeptide fraction for the inhibition of fungal growth. In fact, microscopy studies (SEM/TEM) revealed, an alteration of the morphology of the phytopathogen in interaction with lipopeptides, with resistance structures appearing in the early stages of growth of the fungus. Our studies, carried out with tomatoes, grapes, and strawberries have demonstrated the efficiency of Bacillus XT1 CECT 8661 lipopeptides against B. cinerea infection and it capability to trigger the antioxidant activity in fruit. Overall, the results of this study highlight the potential of lipopeptides of this strain as an effective biological control agent against the colonisation of B. cinerea.
Collapse
Affiliation(s)
- Laura Toral
- Xtrem Biotech S.L., European Business Innovation Center, Granada, Spain
| | - Miguel Rodríguez
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain.,Biomedical Research Center (CIBM), Biotechnology Institute, Granada, Spain
| | - Victoria Béjar
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain.,Biomedical Research Center (CIBM), Biotechnology Institute, Granada, Spain
| | - Inmaculada Sampedro
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain.,Biomedical Research Center (CIBM), Biotechnology Institute, Granada, Spain
| |
Collapse
|
53
|
Analysis of the Complete Genome Sequence of Bacillus atrophaeus GQJK17 Reveals Its Biocontrol Characteristics as a Plant Growth-Promoting Rhizobacterium. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9473542. [PMID: 30046614 PMCID: PMC6038694 DOI: 10.1155/2018/9473542] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/14/2018] [Accepted: 05/21/2018] [Indexed: 12/23/2022]
Abstract
Bacillus atrophaeus GQJK17 was isolated from the rhizosphere of Lycium barbarum L. in China, which was shown to be a plant growth-promoting rhizobacterium as a new biological agent against pathogenic fungi and gram-positive bacteria. We present its biological characteristics and complete genome sequence, which contains a 4,325,818 bp circular chromosome with 4,181 coding DNA sequences and a G+C content of 43.3%. A genome analysis revealed a total of 8 candidate gene clusters for producing antimicrobial secondary metabolites, including surfactin, bacillaene, fengycin, and bacillibactin. Some other antimicrobial and plant growth-promoting genes were also discovered. Our results provide insights into the genetic and biological basis of B. atrophaeus strains as a biocontrol agent for application in agriculture.
Collapse
|
54
|
Guardado-Valdivia L, Tovar-Pérez E, Chacón-López A, López-García U, Gutiérrez-Martínez P, Stoll A, Aguilera S. Identification and characterization of a new Bacillus atrophaeus strain B5 as biocontrol agent of postharvest anthracnose disease in soursop (Annona muricata) and avocado (Persea americana). Microbiol Res 2018; 210:26-32. [PMID: 29625655 DOI: 10.1016/j.micres.2018.01.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 01/16/2018] [Accepted: 01/20/2018] [Indexed: 11/15/2022]
Abstract
Anthracnose is a fungal disease caused by Colletotrichum species that is detrimental to numerous fruit, including soursop and avocado. The use of fungicides to maintain the high quality of fruit creates a potential health risk. One alternative to this problem is the biological control, which has been applied successfully during postharvest. The Bacillus species are one of the most studied biological agents against postharvest pathogens because accomplish their biocontrol performance by producing a variety of metabolites. In this study, we evaluated the activity of metabolites contained in the cell free supernatant, obtained from Bacillus strain B5 culture, against micelial growth and spore germination of two virulent strains of C. gloeosporioides isolated from soursop and avocado. On the basis of 16S rDNA gene sequence analysis, this strain was identified as Bacillus atrophaeus. A preventive treatment using cell free supernatant, reduced severity and incidence of anthracnose disease on harvested soursop and avocado fruit. B. atrophaeus strain B5 harbors genes involved in the production of antibiotics such as surfactin, bacillomycin and iturin, which could be contributing to the efficiency of the preventive treatment during postharvest. The antagonistic role of metabolites contained in the cell free supernatant against anthracnose disease, provide a new approach by which to attack this problem and can help reduce the use of chemical pesticides, environmental pollution, leading to the safer fruit preservation.
Collapse
Affiliation(s)
- Lizeth Guardado-Valdivia
- Laboratorio Integral de Investigación en Alimentos, Instituto Tecnológico de Tepic, Tepic, Nayarit 63175, Mexico
| | - Erik Tovar-Pérez
- Laboratorio Integral de Investigación en Alimentos, CONACYT-Instituto Tecnológico de Tepic, Av Tecnológico 2595, Tepic, Nayarit, 63175, Mexico
| | - Alejandra Chacón-López
- Laboratorio Integral de Investigación en Alimentos, Instituto Tecnológico de Tepic, Tepic, Nayarit 63175, Mexico
| | - Ulises López-García
- Laboratorio Integral de Investigación en Alimentos, Instituto Tecnológico de Tepic, Tepic, Nayarit 63175, Mexico
| | - Porfirio Gutiérrez-Martínez
- Laboratorio Integral de Investigación en Alimentos, Instituto Tecnológico de Tepic, Tepic, Nayarit 63175, Mexico
| | - Alexandra Stoll
- Laboratorio de Microbiología Aplicada, Centro de Estudios Avanzados en Zonas Áridas, La Serena, Chile
| | - Selene Aguilera
- Laboratorio Integral de Investigación en Alimentos, CONACYT-Instituto Tecnológico de Tepic, Av Tecnológico 2595, Tepic, Nayarit, 63175, Mexico.
| |
Collapse
|
55
|
Dukare AS, Paul S, Nambi VE, Gupta RK, Singh R, Sharma K, Vishwakarma RK. Exploitation of microbial antagonists for the control of postharvest diseases of fruits: a review. Crit Rev Food Sci Nutr 2018; 59:1498-1513. [DOI: 10.1080/10408398.2017.1417235] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ajinath Shridhar Dukare
- ICAR - Central Institute of Post-Harvest Engineering & Technology, Ludhiana/Abohar, Punjab, India
| | - Sangeeta Paul
- ICAR - Indian Agricultural Research Institute, New Delhi, India
| | - V. Eyarkai Nambi
- ICAR - Central Institute of Post-Harvest Engineering & Technology, Ludhiana/Abohar, Punjab, India
| | - Ram Kishore Gupta
- ICAR - Central Institute of Post-Harvest Engineering & Technology, Ludhiana/Abohar, Punjab, India
| | - Rajbir Singh
- ICAR - Agricultural Technology Application Research Institutes, Ludhiana, Punjab, India
| | - Kalyani Sharma
- ICAR - Central Institute of Post-Harvest Engineering & Technology, Ludhiana/Abohar, Punjab, India
| | - Rajesh Kumar Vishwakarma
- ICAR - Central Institute of Post-Harvest Engineering & Technology, Ludhiana/Abohar, Punjab, India
| |
Collapse
|
56
|
Kim K, Lee Y, Ha A, Kim JI, Park AR, Yu NH, Son H, Choi GJ, Park HW, Lee CW, Lee T, Lee YW, Kim JC. Chemosensitization of Fusarium graminearum to Chemical Fungicides Using Cyclic Lipopeptides Produced by Bacillus amyloliquefaciens Strain JCK-12. FRONTIERS IN PLANT SCIENCE 2017; 8:2010. [PMID: 29230232 PMCID: PMC5711811 DOI: 10.3389/fpls.2017.02010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 11/10/2017] [Indexed: 05/17/2023]
Abstract
Fusarium head blight (FHB) caused by infection with Fusarium graminearum leads to enormous losses to crop growers, and may contaminate grains with a number of Fusarium mycotoxins that pose serious risks to human and animal health. Antagonistic bacteria that are used to prevent FHB offer attractive alternatives or supplements to synthetic fungicides for controlling FHB without the negative effects of chemical management. Out of 500 bacterial strains isolated from soil, Bacillus amyloliquefaciens JCK-12 showed strong antifungal activity and was considered a potential source for control strategies to reduce FHB. B. amyloliquefaciens JCK-12 produces several cyclic lipopeptides (CLPs) including iturin A, fengycin, and surfactin. Iturin A inhibits spore germination of F. graminearum. Fengycin or surfactin alone did not display any inhibitory activity against spore germination at concentrations less than 30 μg/ml, but a mixture of iturin A, fengycin, and surfactin showed a remarkable synergistic inhibitory effect on F. graminearum spore germination. The fermentation broth and formulation of B. amyloliquefaciens JCK-12 strain reduced the disease incidence of FHB in wheat. Furthermore, co-application of B. amyloliquefaciens JCK-12 and chemical fungicides resulted in synergistic in vitro antifungal effects and significant disease control efficacy against FHB under greenhouse and field conditions, suggesting that B. amyloliquefaciens JCK-12 has a strong chemosensitizing effect. The synergistic antifungal effect of B. amyloliquefaciens JCK-12 and chemical fungicides in combination may result from the cell wall damage and altered cell membrane permeability in the phytopathogenic fungi caused by the CLP mixtures and subsequent increased sensitivity of F. graminearum to fungicides. In addition, B. amyloliquefaciens JCK-12 showed the potential to reduce trichothecenes mycotoxin production. The results of this study indicate that B. amyloliquefaciens JCK-12 could be used as an available biocontrol agent or as a chemosensitizer to chemical fungicides for controlling FHB disease and as a strategy for preventing the contamination of harvested crops with mycotoxins.
Collapse
Affiliation(s)
- Kihyun Kim
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Yoonji Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Areum Ha
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Ji-In Kim
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| | - Ae Ran Park
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, 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
| | - Hokyoung Son
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Gyung Ja Choi
- Center for Eco-Friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Hae Woong Park
- World Institute of Kimchi, Korea Food Research Institute, Gwangju, South Korea
| | - Chul Won Lee
- Department of Chemistry, College of Natural Sciences, Chonnam National University, Gwangju, South Korea
| | - Theresa Lee
- Microbial Safety Team, Department of Agro-Food Safety and Crop Protection, National Institute of Agricultural Sciences, Wanju, South Korea
| | - Yin-Won Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, South Korea
| |
Collapse
|
57
|
Cohen PA, Travis JC, Keizers PHJ, Deuster P, Venhuis BJ. Four experimental stimulants found in sports and weight loss supplements: 2-amino-6-methylheptane (octodrine), 1,4-dimethylamylamine (1,4-DMAA), 1,3-dimethylamylamine (1,3-DMAA) and 1,3-dimethylbutylamine (1,3-DMBA). Clin Toxicol (Phila) 2017; 56:421-426. [DOI: 10.1080/15563650.2017.1398328] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pieter A. Cohen
- Harvard Medical School, Cambridge Health Alliance, Cambridge, MA, USA
| | | | - Peter H. J. Keizers
- National Institute for Public Health and the Environment (RIVM), Health Protection Center, Bilthoven, The Netherlands
| | - Patricia Deuster
- United States Department of Defense, Consortium for Health and Military Performance, Uniformed Services University, Bethesda, MD, USA
| | - Bastiaan J. Venhuis
- National Institute for Public Health and the Environment (RIVM), Health Protection Center, Bilthoven, The Netherlands
| |
Collapse
|
58
|
Sun G, Wang H, Shi B, Shangguan N, Wang Y, Ma Q. Control efficiency and expressions of resistance genes in tomato plants treated with ε-poly-l-lysine against Botrytis cinerea. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 143:191-198. [PMID: 29183591 DOI: 10.1016/j.pestbp.2017.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 06/07/2017] [Accepted: 07/27/2017] [Indexed: 05/21/2023]
Abstract
The antifungal properties and the induction of resistance by ε-poly-l-lysine (ε-PL) were examined to reveal its potential in protecting tomato plants against Botrytis cinerea. As presented herein, ε-PL at 1200mg/L was found to have optimal in vitro antifungal activities, achieving an inhibition rate of 94.96%. In first-year field tests, ε-PL (1200mg/L) had a control effect of up to 79.07% against tomato grey mould. Similar results were obtained in the second year. In greenhouse experiments, ε-PL was observed to effectively reduce leaf infection, with an observed control rate at 89.22%. To define the molecular-genetic mechanisms, we compared the gene expression under four different conditions: sterile water sprayed plants (Control), Botrytis-infected plants (Inf), ε-PL-treated plants (ε-PL) and ε-PL-treated+infected plants (ε-PL+Inf). Quantitative PCR analysis at 36h after inoculation revealed that ε-PL+Inf plants exhibited significant expression and priming of several key Botrytis-induced genes in tomato. The results indicate that ε-PL promoted plant capacity of tomato to activate defense mechanisms upon pathogen attack. In total, these findings revealed that ε-PL should be an excellent biocontrol agent candidate that combined direct antifungal activity against B. cinerea and plant resistance capacity.
Collapse
Affiliation(s)
- Guangzheng Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Han Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Beibei Shi
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Nini Shangguan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Qing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
| |
Collapse
|
59
|
Zhang QX, Zhang Y, Shan HH, Tong YH, Chen XJ, Liu FQ. Isolation and identification of antifungal peptides from Bacillus amyloliquefaciens W10. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:25000-25009. [PMID: 28920176 DOI: 10.1007/s11356-017-0179-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 09/11/2017] [Indexed: 06/07/2023]
Abstract
Antifungal metabolites produced by Bacillus sp. W10, which was previously isolated from the tomato rhizosphere, were investigated. Strain W10 was identified as Bacillus amyloliquefaciens by analysis of its 16S rDNA and gyrB gene partial sequences. PCR analysis showed the presence of fenB, sfp, and ituD genes, coding for fengycin, surfactin, and iturin, respectively. A novel small antifungal peptide, designated 5240, produced by this strain was isolated by ammonium sulfate precipitation and Superdex 200 gel filtration chromatography. The 5240 peptide was stable at 100 °C for 20 min and remained active throughout a wide pH range (4-10). The antagonistic activity was not affected by protease K and trypsin. The purified 5240 peptide exhibited a broad inhibitory spectrum against various plant pathogenic fungi and was identified as iturin A (C14-C16). Moreover, matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry indicated the presence of fengycin A (C14-C15), fengycin B (C16-C17), and surfactin (C13-C16) isoforms in supernatants from strain W10. These results suggest that B. amyloliquefaciens W10 has significant potential as a biocontrol agent.
Collapse
MESH Headings
- Antifungal Agents/isolation & purification
- Bacillus amyloliquefaciens/genetics
- Chromatography, Gel/methods
- DNA Gyrase/genetics
- DNA Gyrase/metabolism
- DNA, Bacterial/genetics
- DNA, Bacterial/metabolism
- Fractional Precipitation/methods
- RNA, Ribosomal, 16S/genetics
- RNA, Ribosomal, 16S/metabolism
- Sequence Analysis, DNA
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Collapse
Affiliation(s)
- Qing-Xia Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, 225009, China.
| | - Ying Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Hai-Huan Shan
- College of Life and Health Sciences, Northeastern University, Shenyang, Liaoning, 110819, China
| | - Yun-Hui Tong
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Xi-Jun Chen
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Feng-Quan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, Jiangsu, 10014, China
| |
Collapse
|
60
|
Lee T, Park D, Kim K, Lim SM, Yu NH, Kim S, Kim HY, Jung KS, Jang JY, Park JC, Ham H, Lee S, Hong SK, Kim JC. Characterization of Bacillus amyloliquefaciens DA12 Showing Potent Antifungal Activity against Mycotoxigenic Fusarium Species. THE PLANT PATHOLOGY JOURNAL 2017; 33:499-507. [PMID: 29018313 PMCID: PMC5624492 DOI: 10.5423/ppj.ft.06.2017.0126] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/04/2017] [Accepted: 09/11/2017] [Indexed: 05/14/2023]
Abstract
In an attempt to develop a biological control agent against mycotoxigenic Fusarium species, we isolated Bacillus amyloliquefaciens strain DA12 from soil and explored its antimicrobial activities. DA12 was active against the growth of mycotoxigenic F. asiaticum, F. graminearum, F. proliferatum, and F. verticillioides both in vitro and in planta (maize). Further screening using dual culture extended the activity range of strain DA12 against other fungal pathogens including Botrytis cinerea, Colletotrichum coccodes, Endothia parasitica, Fusarium oxysporum, Raffaelea quercus-mongolicae, and Rhizoctonia solani. The butanol extract of the culture filtrate of B. amyloliquefaciens DA12 highly inhibited the germination of F. graminearum macroconidia with inhibition rate 83% at a concentration of 31.3 μg/ml and 100% at a concentration of 250 μg/ml. The antifungal metabolite from the butanol extract was identified as iturin A by thin layer chromatography-bioautography. In addition, volatile organic compounds produced by DA12 were able to inhibit mycelial growth of various phytopathogenic fungi. The volatile compounds were identified as 2-heptanone, 5-methyl heptanone and 6-methyl heptanone by gas chromatography-mass spectrometry (GC-MS) analysis. These results indicate that the antagonistic activity of Bacillus amyloliquefaciens DA12 was attributable to iturin A and volatile heptanones, and the strain could be used as a biocontrol agent to reduce the development of Fusarium diseases and mycotoxin contamination of crops.
Collapse
Affiliation(s)
- Theresa Lee
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
- Corresponding authors. T Lee Phone) +82-63-238-3401, FAX) +82-63-238-3840, E-mail) . J-C Kim Phone) +82-62-530-2132, FAX) +82-62-530-2132 E-mail)
| | - Dami Park
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Kihyun Kim
- Division of Applied Bioscience and Biotechnology, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Seong Mi Lim
- Division of Applied Bioscience and Biotechnology, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Nan Hee Yu
- Division of Applied Bioscience and Biotechnology, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
| | - Sosoo Kim
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Hwang-Yong Kim
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Kyu Seok Jung
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Ja Yeong Jang
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Jong-Chul Park
- Crop Breeding Division, National Institute of Crop Science, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Hyeonheui Ham
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Soohyung Lee
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Sung Kee Hong
- Microbial Safety Team, National Institute of Agricultural Sciences, Rural Development Administration (RDA), Wanju 55365,
Korea
| | - Jin-Cheol Kim
- Division of Applied Bioscience and Biotechnology, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186,
Korea
- Corresponding authors. T Lee Phone) +82-63-238-3401, FAX) +82-63-238-3840, E-mail) . J-C Kim Phone) +82-62-530-2132, FAX) +82-62-530-2132 E-mail)
| |
Collapse
|
61
|
Jeong MH, Lee YS, Cho JY, Ahn YS, Moon JH, Hyun HN, Cha GS, Kim KY. Isolation and characterization of metabolites from Bacillus licheniformis MH48 with antifungal activity against plant pathogens. Microb Pathog 2017; 110:645-653. [DOI: 10.1016/j.micpath.2017.07.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
|
62
|
Bailly A, Weisskopf L. Mining the Volatilomes of Plant-Associated Microbiota for New Biocontrol Solutions. Front Microbiol 2017; 8:1638. [PMID: 28890716 PMCID: PMC5574903 DOI: 10.3389/fmicb.2017.01638] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 08/14/2017] [Indexed: 12/13/2022] Open
Abstract
Microbial lifeforms associated with land plants represent a rich source for crop growth- and health-promoting microorganisms and biocontrol agents. Volatile organic compounds (VOCs) produced by the plant microbiota have been demonstrated to elicit plant defenses and inhibit the growth and development of numerous plant pathogens. Therefore, these molecules are prospective alternatives to synthetic pesticides and the determination of their bioactivities against plant threats could contribute to the development of control strategies for sustainable agriculture. In our previous study we investigated the inhibitory impact of volatiles emitted by Pseudomonas species isolated from a potato field against the late blight-causing agent Phytophthora infestans. Besides the well-documented emission of hydrogen cyanide, other Pseudomonas VOCs impeded P. infestans mycelial growth and sporangia germination. Current advances in the field support the emerging concept that the microbial volatilome contains unexploited, eco-friendly chemical resources that could help select for efficient biocontrol strategies and lead to a greener chemical disease management in the field.
Collapse
Affiliation(s)
- Aurélien Bailly
- Department of Plant and Microbial Biology, University of ZurichZurich, Switzerland.,Agroscope, Institute for Sustainability SciencesZurich, Switzerland
| | - Laure Weisskopf
- Agroscope, Institute for Sustainability SciencesZurich, Switzerland.,Department of Biology, University of FribourgFribourg, Switzerland
| |
Collapse
|
63
|
Parellada EA, Igarza M, Isacc P, Bardón A, Ferrero M, Ameta KL, Neske A. Squamocin, an annonaceous acetogenin, enhances naphthalene degradation mediated by Bacillus atrophaeus CN4. Rev Argent Microbiol 2017; 49:282-288. [DOI: 10.1016/j.ram.2017.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 02/03/2017] [Accepted: 03/20/2017] [Indexed: 11/25/2022] Open
|
64
|
Tan LTH, Chan KG, Khan TM, Bukhari SI, Saokaew S, Duangjai A, Pusparajah P, Lee LH, Goh BH. Streptomyces sp. MUM212 as a Source of Antioxidants with Radical Scavenging and Metal Chelating Properties. Front Pharmacol 2017; 8:276. [PMID: 28567016 PMCID: PMC5434116 DOI: 10.3389/fphar.2017.00276] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 05/02/2017] [Indexed: 12/13/2022] Open
Abstract
Reactive oxygen species and other radicals potentially cause oxidative damage to proteins, lipids, and DNA which may ultimately lead to various complications including mutations, carcinogenesis, neurodegeneration, cardiovascular disease, aging, and inflammatory disease. Recent reports demonstrate that Streptomyces bacteria produce metabolites with potent antioxidant activity that may be developed into therapeutic drugs to combat oxidative stress. This study shows that Streptomyces sp. MUM212 which was isolated from mangrove soil in Kuala Selangor, Malaysia, could be a potential source of antioxidants. Strain MUM212 was characterized and determined as belonging to the genus Streptomyces using 16S rRNA gene phylogenetic analysis. The MUM212 extract demonstrated significant antioxidant activity through DPPH, ABTS and superoxide radical scavenging assays and also metal-chelating activity of 22.03 ± 3.01%, 61.52 ± 3.13%, 37.47 ± 1.79%, and 41.98 ± 0.73% at 4 mg/mL, respectively. Moreover, MUM212 extract was demonstrated to inhibit lipid peroxidation up to 16.72 ± 2.64% at 4 mg/mL and restore survival of Vero cells from H2O2-induced oxidative damages. The antioxidant activities from the MUM212 extract correlated well with its total phenolic contents; and this in turn was in keeping with the gas chromatography-mass spectrometry analysis which revealed the presence of phenolic compounds that could be responsible for the antioxidant properties of the extract. Other chemical constituents detected included hydrocarbons, alcohols and cyclic dipeptides which may have contributed to the overall antioxidant capacity of MUM212 extract. As a whole, strain MUM212 seems to have potential as a promising source of novel molecules for future development of antioxidative therapeutic agents against oxidative stress-related diseases.
Collapse
Affiliation(s)
- Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University MalaysiaBandar Sunway, Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of MalayaKuala Lumpur, Malaysia
| | - Tahir Mehmood Khan
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University MalaysiaBandar Sunway, Malaysia.,Department of Pharmacy, Abasyn UniversityPeshawar, Pakistan
| | - Sarah Ibrahim Bukhari
- Department of Pharmaceutics, College of Pharmacy, King Saud UniversityRiyadh, Saudi Arabia
| | - Surasak Saokaew
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University MalaysiaBandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of PhayaoPhayao, Thailand.,Pharmaceutical Outcomes Research Center, Faculty of Pharmaceutical Sciences, Naresuan UniversityPhitsanulok, Thailand.,Unit of Excellence on Herbal Medicine, School of Pharmaceutical Sciences, University of PhayaoPhayao, Thailand
| | - Acharaporn Duangjai
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of PhayaoPhayao, Thailand.,Division of Physiology, School of Medical Sciences, University of PhayaoPhayao, Thailand
| | - Priyia Pusparajah
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University MalaysiaBandar Sunway, Malaysia
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University MalaysiaBandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of PhayaoPhayao, Thailand
| | - Bey-Hing Goh
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University MalaysiaBandar Sunway, Malaysia.,Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of PhayaoPhayao, Thailand
| |
Collapse
|
65
|
Fan H, Ru J, Zhang Y, Wang Q, Li Y. Fengycin produced by Bacillus subtilis 9407 plays a major role in the biocontrol of apple ring rot disease. Microbiol Res 2017; 199:89-97. [PMID: 28454713 DOI: 10.1016/j.micres.2017.03.004] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 02/21/2017] [Accepted: 03/15/2017] [Indexed: 11/26/2022]
Abstract
Apple ring rot, caused by Botryosphaeria dothidea, is a serious apple disease in China. Bacillus subtilis 9407 was isolated from healthy apples and showed strong antifungal activity against B. dothidea. To identify the primary antifungal compound of B. subtilis 9407 and determine its role in controlling apple ring rot, a transposon mutant library was constructed using TnYLB-1, and a mutant completely defective in antifungal activity was obtained. The gene inactivated in the antifungal activity mutant had 98.5% similarity to ppsB in B. subtilis subsp. subtilis str. 168, which encodes one of the five synthetases responsible for synthesizing fengycin. A markerless ppsB deletion mutant was constructed. Compared with the wild-type strain, lipopeptide crude extracts from ΔppsB showed almost no inhibition of B. dothidea mycelial growth. Furthermore, fengycin-like lipopeptides (retention factor 0.1-0.2) that exhibited antifungal activity against B. dothidea were observed in the wild-type strain by thin-layer chromatography (TLC)-bioautography analysis, but not in ΔppsB. Semipreparative reverse-phase high performance liquid chromatography (RP-HPLC) detection revealed that ΔppsB lost the ability to synthesize fengycin. These results suggest that ppsB is responsible for synthesizing fengycin and that fengycin is the major antifungal compound produced by B. subtilis 9407 against B. dothidea. Moreover, a biocontrol assay showed that the control efficacy of ΔppsB was reduced by half compared with the wild-type strain, indicating that fengycin plays a major role in controlling apple ring rot disease. This is the first report on the use of a B. subtilis strain as a potential biological control agent to control apple ring rot disease by the production of fengycin.
Collapse
Affiliation(s)
- Haiyan Fan
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.
| | - Jinjiang Ru
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.
| | - Yuanyuan Zhang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.
| | - Qi Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.
| | - Yan Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.
| |
Collapse
|
66
|
Husseneder C, Park JS, Howells A, Tikhe CV, Davis JA. Bacteria Associated With Piezodorus guildinii (Hemiptera: Pentatomidae), With Special Reference to Those Transmitted by Feeding. ENVIRONMENTAL ENTOMOLOGY 2017; 46:159-166. [PMID: 28025221 DOI: 10.1093/ee/nvw112] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Indexed: 06/06/2023]
Abstract
The redbanded stink bug, Piezodorus guildinii (Westwood) (Hemiptera: Heteroptera: Pentatomidae), is a rapidly growing pest damaging southern US agriculture. Pentatomid stink bugs are known to vector bacterial, fungal, and viral plant diseases. However, bacteria associated with redbanded stink bugs and their vector potential have not yet been assessed. In this study, we 1) cultured and identified bacteria transmitted by feeding of redbanded stink bug and 2) described bacteria from guts of redbanded stink bug individuals using next-generation sequencing of 16S rRNA genes. Nineteen bacteria transmitted by feeding of redbanded stink bug on soybean agar were isolated and identified via Sanger sequencing of near full length 16S RNA genes. The transmitted bacteria belonged to at least a dozen species in eight genera and included potential plant pathogens (Phaseolibacter flectens), plant beneficials (Bacillus atropheus), and possible insect beneficials (Acinetobacter sp. and Citrobacter farmeri). A total of 284,448 reads were captured from Illumina MiSeq sequencing of the uncultured gut bacteria community. Fifty-one putative bacteria species (74% of the estimated total species richness) were identified via matches to NCBI databases. The bacteria metagenome contained potential plant and insect pathogens (Erwinia persicina, E. rhaponici, Brenneria nigrifluens, Ralstonia picketti, and Serratia marcescens) and beneficials (Pantoea dispersa, Klebsiella oxytoca, Clostridium butyricum, and Citrobacter farmeri).
Collapse
Affiliation(s)
- Claudia Husseneder
- Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 (; ; ; ; )
| | - Jong-Seok Park
- Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 (; ; ; ; )
| | - Andrea Howells
- Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 (; ; ; ; )
| | - Chinmay V Tikhe
- Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 (; ; ; ; )
| | - Jeffrey A Davis
- Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 (; ; ; ; )
| |
Collapse
|
67
|
Gao H, Xu X, Zeng Q, Li P. Optimization of Headspace Solid-phase Microextraction for GC-MS Analysis of Volatile Compounds Produced by Biocontrol Strain Bacillus subtilis CF-3 Using Response Surface Methodology. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2017. [DOI: 10.3136/fstr.23.583] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Haiyan Gao
- School of Life Sciences, Shanghai University
- Shanghai Key Laboratory of Bio-Energy Crops
| | - Xinxing Xu
- School of Life Sciences, Shanghai University
- Shanghai Key Laboratory of Bio-Energy Crops
| | - Qing Zeng
- School of Life Sciences, Shanghai University
- Shanghai Key Laboratory of Bio-Energy Crops
| | - Peizhong Li
- School of Life Sciences, Shanghai University
- Shanghai Key Laboratory of Bio-Energy Crops
| |
Collapse
|
68
|
|
69
|
Haidar R, Roudet J, Bonnard O, Dufour MC, Corio-Costet MF, Fert M, Gautier T, Deschamps A, Fermaud M. Screening and modes of action of antagonistic bacteria to control the fungal pathogen Phaeomoniella chlamydospora involved in grapevine trunk diseases. Microbiol Res 2016; 192:172-184. [PMID: 27664735 DOI: 10.1016/j.micres.2016.07.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/28/2016] [Accepted: 07/16/2016] [Indexed: 01/08/2023]
Abstract
The antagonistic activity of 46 bacterial strains isolated from Bordeaux vineyards were evaluated against Phaeomoniella chlamydospora, a major grapevine pathogen involved in Esca. The reduction of the necrosis length of stem cuttings ranged between 31.4% and 38.7% for the 8 most efficient strains. Two in planta trials allowed the selection of the two best strains, Bacillus pumilus (S32) and Paenibacillus sp. (S19). Their efficacy was not dependent on application method; co-inoculation, prevention in the wood and soil inoculation were tested. The involvement of antibiosis by the secretion of diffusible and/or volatile compounds in the antagonistic capacity of these two strains was assessed in vitro. Volatile compounds secreted by B. pumilus (S32) and Paenibacillus sp. (S19) were identified by gas chromatography/mass spectroscopy (GC/MS). The volatile compounds 1-octen-3-ol and 2,5-dimethyl pyrazine were obtained commercially and tested, and they showed strong antifungal activity against P. chlamydospora, which suggested that these compounds may play an important role in the bacterial antagonistic activity in planta. Furthermore, the expression of 10 major grapevine defense genes was quantified by real-time polymerase chain reaction, which demonstrated that the two strains significantly affected the grapevine transcripts four days after their application on the plants. High expression levels of different genes associated with P. chlamydospora infection in B. pumilus pre-treated plants suggests that this strain induces systemic resistance in grapevine. For the first time, we demonstrated the ability of two bacterial strains, B. pumilus and Paenibacillus sp., isolated from grapevine wood, to control P. chlamydospora via direct and/or indirect mechanisms.
Collapse
Affiliation(s)
- Rana Haidar
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France; Tichreen University, Faculty of Science, Biology Department, P.O. Box 2231, Latakia, Syrian Arab Republic.
| | - Jean Roudet
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Olivier Bonnard
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Marie Cécile Dufour
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Marie France Corio-Costet
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Mathieu Fert
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Thomas Gautier
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Alain Deschamps
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| | - Marc Fermaud
- SAVE, INRA, Institut National de Recherche Agronomique, Bordeaux Sciences Agro, ISVV, 33882 Villenave d'Ornon, France
| |
Collapse
|
70
|
Aleti G, Lehner S, Bacher M, Compant S, Nikolic B, Plesko M, Schuhmacher R, Sessitsch A, Brader G. Surfactin variants mediate species-specific biofilm formation and root colonization in Bacillus. Environ Microbiol 2016; 18:2634-45. [PMID: 27306252 DOI: 10.1111/1462-2920.13405] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclic lipopeptides (cLP) and especially surfactins produced by Bacillus spp. trigger biofilm formation and root colonization and are crucial for biocontrol activity and systemic resistance in plants. Bacillus atrophaeus 176s isolated from the moss Tortella tortuosa produces the cLP fengycins, iturins and surfactins, possesses antifungal activities and can protect tomato, lettuce and sugar beet against Rhizoctonia solani infection. In B. atrophaeus we identified for the first time the variant surfactin C, which differs from surfactin A produced by B. subtilis and B. amyloliquefaciens by an isoleucine instead of a leucine at position 7 of the lipopeptide backbone. The analysis of the complete surfactin gene clusters revealed that the dissimilarity is encoded in the adenylation domain of srfC and show that surfactin variations are distributed in a species-specific manner in bacilli. We demonstrate that the surfactin A and C with subtle structural differences have varying signal strengths on biofilm formation and root colonization and act specifically on the respective producing strain. This became evident as biofilm formation and root colonization but not swarming motility in surfactin biosynthesis mutants was restored differentially in the presence of exogenously supplemented cognate and non-cognate surfactin variants.
Collapse
Affiliation(s)
- Gajender Aleti
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Sylvia Lehner
- Department of Agrobiotechnology (IFA-Tulln), Center for Analytical Chemistry, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Markus Bacher
- Department of Chemistry, University of Natural Resources and Life Sciences (BOKU), UFT Research Center Tulln, Konrad-Lorenz-Str. 24, Tulln, A-3430, Austria
| | - Stéphane Compant
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Branislav Nikolic
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Maja Plesko
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Rainer Schuhmacher
- Department of Agrobiotechnology (IFA-Tulln), Center for Analytical Chemistry, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Angela Sessitsch
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Günter Brader
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| |
Collapse
|
71
|
Torres MJ, Brandan CP, Petroselli G, Erra-Balsells R, Audisio MC. Antagonistic effects of Bacillus subtilis subsp. subtilis and B. amyloliquefaciens against Macrophomina phaseolina: SEM study of fungal changes and UV-MALDI-TOF MS analysis of their bioactive compounds. Microbiol Res 2015; 182:31-9. [PMID: 26686611 DOI: 10.1016/j.micres.2015.09.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 09/01/2015] [Accepted: 09/26/2015] [Indexed: 10/23/2022]
Abstract
The antifungal effect of Bacillus subtilis subsp. subtilis PGPMori7 and Bacillus amyloliquefaciens PGPBacCA1 was evaluated against Macrophomina phaseolina (Tassi) Goid. Cell suspension (CS), cell-free supernatant (CFS) and the lipopeptide fraction (LF) of PGPMori7 and PGPBacCA1 were screened against three different M. phaseolina strains. CS exhibited the highest inhibitory effect (around 50%) when compared to those of CFS and LF, regardless of the fungal strain studied. The synthesis of lipopeptides was studied by UV-MALDI TOF. Chemical analysis of Bacillus metabolite synthesis revealed that surfactin and iturin were mainly produced in liquid medium. Potential fengycin was also co-produced when both Bacillus were cultivated in solid medium. In co-culture assays, the bacterial colony-fungal mycelium interface at the inhibition zone was evaluated by both scanning electron microscopy (SEM) and UV-MALDI TOF, the former to determine the structural changes on M. phaseolina cells and the latter to identify the main bioactive molecules involved in the inhibitory effect. PGPBacCA1 produced surfactin, iturin and fengycin in the inhibition zone while PGPMori7 only produced these metabolites within its colony and not in the narrow inhibition zone. Interestingly, SEM revealed that PGPBacCA1 induced damage in M. phaseolina sclerotia, generating a fungicidal effect as no growth was observed when normal growth conditions were reestablished. In turn, PGPMori7 inhibited the growth of the Macrophomina mycelium without fungal injury, resulting only in a fungistatic activity. From these results, it was determined that the two bacilli significantly inhibited the growth of an important phytopathogenic fungus by at least two different mechanisms: lipopeptide synthesis and competition among microorganisms.
Collapse
Affiliation(s)
- M J Torres
- Instituto de Investigaciones para la Industria Química (INIQUI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Salta, Av. Bolivia 5150, 4400 Salta, Argentina
| | - C Pérez Brandan
- Instituto Nacional de Tecnología Agropecuaria-Estación Experimental Salta, Ruta Nacional 68 Km 172, Cerrillos, 4403 Salta, Argentina
| | - G Petroselli
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 3 Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | - R Erra-Balsells
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 3 Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | - M C Audisio
- Instituto de Investigaciones para la Industria Química (INIQUI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Salta, Av. Bolivia 5150, 4400 Salta, Argentina.
| |
Collapse
|
72
|
Wang P, Guo Q, Ma Y, Li S, Lu X, Zhang X, Ma P. DegQ regulates the production of fengycins and biofilm formation of the biocontrol agent Bacillus subtilis NCD-2. Microbiol Res 2015; 178:42-50. [DOI: 10.1016/j.micres.2015.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 05/29/2015] [Accepted: 06/20/2015] [Indexed: 10/23/2022]
|
73
|
Chaves-López C, Serio A, Gianotti A, Sacchetti G, Ndagijimana M, Ciccarone C, Stellarini A, Corsetti A, Paparella A. Diversity of food-borne Bacillus
volatile compounds and influence on fungal growth. J Appl Microbiol 2015; 119:487-99. [DOI: 10.1111/jam.12847] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 04/02/2015] [Accepted: 05/04/2015] [Indexed: 11/29/2022]
Affiliation(s)
- C. Chaves-López
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Mosciano Stazione Italy
| | - A. Serio
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Mosciano Stazione Italy
| | - A. Gianotti
- Department of Agri-Food Science and Technology (DISTAL); University of Bologna; Bologna Italy
| | - G. Sacchetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Mosciano Stazione Italy
| | - M. Ndagijimana
- Department of Agricultural, Food and Nutritional Science (AFNS); Faculty of Agricultural, Life and Environmental Sciences (ALES); 4-10 Agriculture/Forestry Centre; University of Alberta; Edmonton AB Canada
| | - C. Ciccarone
- Department of Agro-Environmental, Chemistry and Crop-Protection; Faculty of Agricultural Science; University of Foggia; Foggia Italy
| | - A. Stellarini
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Mosciano Stazione Italy
| | - A. Corsetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Mosciano Stazione Italy
| | - A. Paparella
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Mosciano Stazione Italy
| |
Collapse
|
74
|
Gong AD, Li HP, Yuan QS, Song XS, Yao W, He WJ, Zhang JB, Liao YC. Antagonistic mechanism of iturin A and plipastatin A from Bacillus amyloliquefaciens S76-3 from wheat spikes against Fusarium graminearum. PLoS One 2015; 10:e0116871. [PMID: 25689464 PMCID: PMC4331432 DOI: 10.1371/journal.pone.0116871] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 12/15/2014] [Indexed: 11/19/2022] Open
Abstract
Controlling toxigenic Fusarium graminearum (FG) is challenging. A bacterial strain (S76-3, identified as Bacillus amyloliquefaciens) that was isolated from diseased wheat spikes in the field displayed strong antifungal activity against FG. Reverse-phase high performance liquid chromatography and electrospray ionization mass spectrometry analyses revealed that S76-3 produced three classes of cyclic lipopeptides including iturin, plipastatin and surfactin. Each class consisted of several different molecules. The iturin and plipastatin fractions strongly inhibited FG; the surfactin fractions did not. The most abundant compound that had antagonistic activity from the iturin fraction was iturin A (m/z 1043.35); the most abundant active compound from the plipastatin fraction was plipastatin A (m/z 1463.90). These compounds were analyzed with collision-induced dissociation mass spectrometry. The two purified compounds displayed strong fungicidal activity, completely killing conidial spores at the minimal inhibitory concentration range of 50 µg/ml (iturin A) and 100 µg/ml (plipastatin A). Optical and fluorescence microscopy analyses revealed severe morphological changes in conidia and substantial distortions in FG hyphae treated with iturin A or plipastatin A. Iturin A caused leakage and/or inactivation of FG cellular contents and plipastatin A caused vacuolation. Time-lapse imaging of dynamic antagonistic processes illustrated that iturin A caused distortion and conglobation along hyphae and inhibited branch formation and growth, while plipastatin A caused conglobation in young hyphae and branch tips. Transmission electron microscopy analyses demonstrated that the cell walls of conidia and hyphae of iturin A and plipastatin A treated FG had large gaps and that their plasma membranes were severely damaged and separated from cell walls.
Collapse
Affiliation(s)
- An-Dong Gong
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - He-Ping Li
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Qing-Song Yuan
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Xiu-Shi Song
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Wei Yao
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Wei-Jie He
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Jing-Bo Zhang
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Yu-Cai Liao
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| |
Collapse
|
75
|
Breen S, Solomon PS, Bedon F, Vincent D. Surveying the potential of secreted antimicrobial peptides to enhance plant disease resistance. FRONTIERS IN PLANT SCIENCE 2015; 6:900. [PMID: 26579150 PMCID: PMC4621407 DOI: 10.3389/fpls.2015.00900] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 10/09/2015] [Indexed: 05/20/2023]
Abstract
Antimicrobial peptides (AMPs) are natural products found across diverse taxa as part of the innate immune system against pathogen attacks. Some AMPs are synthesized through the canonical gene expression machinery and are called ribosomal AMPs. Other AMPs are assembled by modular enzymes generating nonribosomal AMPs and harbor unusual structural diversity. Plants synthesize an array of AMPs, yet are still subject to many pathogen invasions. Crop breeding programs struggle to release new cultivars in which complete disease resistance is achieved, and usually such resistance becomes quickly overcome by the targeted pathogens which have a shorter generation time. AMPs could offer a solution by exploring not only plant-derived AMPs, related or unrelated to the crop of interest, but also non-plant AMPs produced by bacteria, fungi, oomycetes or animals. This review highlights some promising candidates within the plant kingdom and elsewhere, and offers some perspectives on how to identify and validate their bioactivities. Technological advances, particularly in mass spectrometry (MS) and nuclear magnetic resonance (NMR), have been instrumental in identifying and elucidating the structure of novel AMPs, especially nonribosomal peptides which cannot be identified through genomics approaches. The majority of non-plant AMPs showing potential for plant disease immunity are often tested using in vitro assays. The greatest challenge remains the functional validation of candidate AMPs in plants through transgenic experiments, particularly introducing nonribosomal AMPs into crops.
Collapse
Affiliation(s)
- Susan Breen
- Plant Sciences Division, Research School of Biology, The Australian National UniversityCanberra, ACT, Australia
| | - Peter S. Solomon
- Plant Sciences Division, Research School of Biology, The Australian National UniversityCanberra, ACT, Australia
| | - Frank Bedon
- Department of Economic Development, AgriBioBundoora, VIC, Australia
- AgriBio, La Trobe UniversityBundoora, VIC, Australia
| | - Delphine Vincent
- Department of Economic Development, AgriBioBundoora, VIC, Australia
- *Correspondence: Delphine Vincent
| |
Collapse
|
76
|
Kanchiswamy CN, Malnoy M, Maffei ME. Chemical diversity of microbial volatiles and their potential for plant growth and productivity. FRONTIERS IN PLANT SCIENCE 2015; 6:151. [PMID: 25821453 PMCID: PMC4358370 DOI: 10.3389/fpls.2015.00151] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 02/24/2015] [Indexed: 05/02/2023]
Abstract
Microbial volatile organic compounds (MVOCs) are produced by a wide array of microorganisms ranging from bacteria to fungi. A growing body of evidence indicates that MVOCs are ecofriendly and can be exploited as a cost-effective sustainable strategy for use in agricultural practice as agents that enhance plant growth, productivity, and disease resistance. As naturally occurring chemicals, MVOCs have potential as possible alternatives to harmful pesticides, fungicides, and bactericides as well as genetic modification. Recent studies performed under open field conditions demonstrate that efficiently adopting MVOCs may contribute to sustainable crop protection and production. We review here the chemical diversity of MVOCs by describing microbial-plants and microbial-microbial interactions. Furthermore, we discuss MVOCs role in inducing phenotypic plant responses and their potential physiological effects on crops. Finally, we analyze potential and actual limitations for MVOC use and deployment in field conditions as a sustainable strategy for improving productivity and reducing pesticide use.
Collapse
Affiliation(s)
- Chidananda Nagamangala Kanchiswamy
- Research and Innovation Center, Biology and Genomic of Fruit Plants, Fondazione Edmund MachTrento, Italy,
- *Correspondence: Chidananda Nagamangala Kanchiswamy, Research and Innovation Center, Biology and Genomic of Fruit Plants, Fondazione Edmund Mach, Via E.Mach 1, San Michele all'Adige, Trento, Italy
| | - Mickael Malnoy
- Research and Innovation Center, Biology and Genomic of Fruit Plants, Fondazione Edmund MachTrento, Italy,
| | - Massimo E. Maffei
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of TurinTurin, Italy
| |
Collapse
|
77
|
Wang Z, Wang Y, Zheng L, Yang X, Liu H, Guo J. Isolation and characterization of an antifungal protein from Bacillus licheniformis HS10. Biochem Biophys Res Commun 2014; 454:48-52. [PMID: 25445597 DOI: 10.1016/j.bbrc.2014.10.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 10/07/2014] [Indexed: 11/25/2022]
Abstract
Bacillus licheniformis HS10 is a good biocontrol agent against Pseudoperonospora cubensis which caused cucumber downy disease. To identify and characterize the antifungal proteins produced by B.licheniformis HS10, the proteins from HS10 were isolated by using 30-60% ammonium sulfate precipitation, and purified with column chromatography on DEAE Sepharose Fast Flow, RESOURCE Q and Sephadex G-75. And the SDS-PAGE and MALDI-TOF/TOF-MS analysis results demonstrated that the antifungal protein was a monomer with molecular weight of about 55 kDa, identified as carboxypeptidase. Our experiments also showed that the antifungal protein from B. licheniformis HS10 had significantly inhibition on eight different kinds of plant pathogenic fungi, and it was stable with good biological activity at as high as 100°C for 30 min and in pH value ranged from 6 to 10. The biological activity was negatively affected by protease K and 10mM metal cations except Ca(2+).
Collapse
Affiliation(s)
- Zhixin Wang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
| | - Yunpeng Wang
- College of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Li Zheng
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China; Chinese Academy of Tropical Agricultural Sciences Guangzhou Experimental Station, Guangzhou 510140, China; Tropical Energy and Ecology Research Centre of CATAS, Guangzhou 510140, China
| | - Xiaona Yang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
| | - Hongxia Liu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China.
| | - Jianhua Guo
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing 210095, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
| |
Collapse
|
78
|
Huang H, Wu Z, Tian C, Liang Y, You C, Chen L. Identification and characterization of the endophytic bacterium Bacillus atrophaeus XW2, antagonistic towards Colletotrichum gloeosporioides. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0974-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
79
|
Sella SRBR, Vandenberghe LPS, Soccol CR. Bacillus atrophaeus:main characteristics and biotechnological applications – a review. Crit Rev Biotechnol 2014; 35:533-45. [DOI: 10.3109/07388551.2014.922915] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|