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Surovy MZ, Dutta S, Mahmud NU, Gupta DR, Farhana T, Paul SK, Win J, Dunlap C, Oliva R, Rahman M, Sharpe AG, Islam T. Biological control potential of worrisome wheat blast disease by the seed endophytic bacilli. Front Microbiol 2024; 15:1336515. [PMID: 38529179 PMCID: PMC10961374 DOI: 10.3389/fmicb.2024.1336515] [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: 11/10/2023] [Accepted: 02/26/2024] [Indexed: 03/27/2024] Open
Abstract
Crop production often faces challenges from plant diseases, and biological control emerges as an effective, environmentally friendly, cost-effective, and sustainable alternative to chemical control. Wheat blast disease caused by fungal pathogen Magnaporthe oryzae Triticum (MoT), is a potential catastrophic threat to global food security. This study aimed to identify potential bacterial isolates from rice and wheat seeds with inhibitory effects against MoT. In dual culture and seedling assays, three bacterial isolates (BTS-3, BTS-4, and BTLK6A) demonstrated effective suppression of MoT growth and reduced wheat blast severity when artificially inoculated at the seedling stage. Genome phylogeny identified these isolates as Bacillus subtilis (BTS-3) and B. velezensis (BTS-4 and BTLK6A). Whole-genome analysis revealed the presence of genes responsible for controlling MoT through antimicrobial defense, antioxidant defense, cell wall degradation, and induced systemic resistance (ISR). Taken together, our results suggest that the suppression of wheat blast disease by seed endophytic B. subtilis (BTS-3) and B. velezensis (BTS-4 and BTLK6A) is liked with antibiosis and induced systemic resistance to wheat plants. A further field validation is needed before recommending these endophytic bacteria for biological control of wheat blast.
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Affiliation(s)
- Musrat Zahan Surovy
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Sudipta Dutta
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Nur Uddin Mahmud
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Dipali Rani Gupta
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Tarin Farhana
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Sanjay Kumar Paul
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Joe Win
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Christopher Dunlap
- Crop Bioprotection Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture (USDA), Peoria, IL, United States
| | | | - Mahfuzur Rahman
- W.V.U. Extension Service, West Virginia University, Morgantown, WV, United States
| | | | - Tofazzal Islam
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
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Adriano-Anaya L, Pardo-Girón LF, Salvador-Adriano M, Salvador-Figueroa M, Ovando-Medina I, Moreno-Castillo B. Effectiveness of Bacillus subtilis ANT01 and Rhizobium sp. 11B on the control of fusarium wilt in pineapple ( Ananas comosus). PeerJ 2024; 12:e16871. [PMID: 38464753 PMCID: PMC10921932 DOI: 10.7717/peerj.16871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/10/2024] [Indexed: 03/12/2024] Open
Abstract
Pineapple (Ananas comosus) is commonly infected by Fusarium oxysporum, causal agent of the fusarium wilt disease. Conventionally, growers use synthetic fungicides to control the disease, which lead to environmental pollution, hazardous effects on non-target organisms and risks on human health. The aim of this work was to assess the effectiveness of Bacillus subtilis ANT01 and Rhizobium sp. 11B to control fusarium wilt on pineapple plants. Four treatments derived from a complete factorial design were tested under field conditions. Treatments composed of B. subtilis ANT01 and the combination B. subtilis ANT01-Rhizobium sp. 11B decreased disease severity by 94.4% and 86.1%, respectively. On the other hand, the treatment prepared with Rhizobium sp. 11B alone showed a reduction of 75.0%. Size of leaves and nutritional condition (SPAD units) of the biocontrol agents-treated plants showed no statistical differences. Moreover, B. subtilis ANT01 decreased by 46% the initial soil population of F. oxysporum, while Rhizobium sp. 11B, B. subtilis ANT01 plus Rhizobium sp. 11B and control, showed a population reduction of 12.5%, 24.2% and 23.0%, respectively. These results make evident the potential of B. subtilis ANT01 as biocontrol agent of the pathogen under field conditions.
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Affiliation(s)
- Lourdes Adriano-Anaya
- Instituto de Biociencias, Campus IV, Universidad Autónoma de Chiapas, Tapachula, Chiapas, Mexico
| | | | - Miguel Salvador-Adriano
- Instituto de Biociencias, Campus IV, Universidad Autónoma de Chiapas, Tapachula, Chiapas, Mexico
| | - Miguel Salvador-Figueroa
- Instituto de Biociencias, Campus IV, Universidad Autónoma de Chiapas, Tapachula, Chiapas, Mexico
| | - Isidro Ovando-Medina
- Instituto de Biociencias, Campus IV, Universidad Autónoma de Chiapas, Tapachula, Chiapas, Mexico
| | - Benjamin Moreno-Castillo
- Instituto de Biociencias, Campus IV, Universidad Autónoma de Chiapas, Tapachula, Chiapas, Mexico
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Ajuna HB, Lim HI, Moon JH, Won SJ, Choub V, Choi SI, Yun JY, Ahn YS. The Prospect of Hydrolytic Enzymes from Bacillus Species in the Biological Control of Pests and Diseases in Forest and Fruit Tree Production. Int J Mol Sci 2023; 24:16889. [PMID: 38069212 PMCID: PMC10707167 DOI: 10.3390/ijms242316889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Plant diseases and insect pest damage cause tremendous losses in forestry and fruit tree production. Even though chemical pesticides have been effective in the control of plant diseases and insect pests for several decades, they are increasingly becoming undesirable due to their toxic residues that affect human life, animals, and the environment, as well as the growing challenge of pesticide resistance. In this study, we review the potential of hydrolytic enzymes from Bacillus species such as chitinases, β-1,3-glucanases, proteases, lipases, amylases, and cellulases in the biological control of phytopathogens and insect pests, which could be a more sustainable alternative to chemical pesticides. This study highlights the application potential of the hydrolytic enzymes from different Bacillus sp. as effective biocontrol alternatives against phytopathogens/insect pests through the degradation of cell wall/insect cuticles, which are mainly composed of structural polysaccharides like chitins, β-glucans, glycoproteins, and lipids. This study demonstrates the prospects for applying hydrolytic enzymes from Bacillus sp. as effective biopesticides in forest and fruit tree production, their mode of biocidal activity and dual antimicrobial/insecticidal potential, which indicates a great prospect for the simultaneous biocontrol of pests/diseases. Further research should focus on optimizing the production of hydrolytic enzymes, and the antimicrobial/insecticidal synergism of different Bacillus sp. which could facilitate the simultaneous biocontrol of pests and diseases in forest and fruit tree production.
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Affiliation(s)
- Henry B. Ajuna
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
| | - Hyo-In Lim
- Forest Bioinformation Division, National Institute of Forest Science, Suwon 16631, Republic of Korea;
| | - Jae-Hyun Moon
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
| | - Sang-Jae Won
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
| | - Vantha Choub
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
| | - Su-In Choi
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
| | - Ju-Yeol Yun
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
| | - Young Sang Ahn
- Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; (H.B.A.); (J.-H.M.); (S.-J.W.); (V.C.); (S.-I.C.); (J.-Y.Y.)
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Mu F, Chen X, Fu Z, Wang X, Guo J, Zhao X, Zhang B. Genome and Transcriptome Analysis to Elucidate the Biocontrol Mechanism of Bacillus amyloliquefaciens XJ5 against Alternaria solani. Microorganisms 2023; 11:2055. [PMID: 37630615 PMCID: PMC10459136 DOI: 10.3390/microorganisms11082055] [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] [Received: 07/12/2023] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Early blight, caused by Alternaria solani, is an important disease affecting tomatoes. Biological control offers an environmentally friendly approach to controlling pathogens. Herein, we identified a B. amyloliquefaciens strain XJ5 and investigated its biocontrol mechanism against A. solani. A. solani growth was significantly inhibited by XJ5, with the inhibition rate of cell-free culture supernatants reaching 82.3%. Furthermore, XJ5 crude protein extracts inhibited conidia germination and altered the mycelial morphology of A. solani. To uncover the potential biocontrol mechanism of XJ5, we analyzed its genome sequence and transcriptome. The genome of XJ5 comprised a 4.16 Mb circular chromosome and two circular plasmids. A total of 13 biosynthetic gene clusters and 127 genes encoding hydrolases were identified, suggestive of the ability of XJ5 to secrete antagonistic secondary metabolites and hydrolases. Transcript analysis revealed 174 differentially expressed genes on exposing A. solani to XJ5 crude protein extracts. The expression of genes related to chitin and mannose synthesis was downregulated, indicating that XJ5 metabolites may impact chitin and mannose synthesis in A. solani. Overall, these findings enhance our understanding of the interactions between B. amyloliquefaciens and phytopathogens and pave the way for the agricultural application of this promising biocontrol agent.
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Affiliation(s)
| | | | | | | | | | | | - Baojun Zhang
- Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Jinzhong 030801, China; (F.M.); (Z.F.)
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Yang L, Yan C, Peng S, Chen L, Guo J, Lu Y, Li L, Ji Z. Broad-spectrum resistance mechanism of serine protease Sp1 in Bacillus licheniformis W10 via dual comparative transcriptome analysis. Front Microbiol 2022; 13:974473. [PMID: 36267189 PMCID: PMC9577198 DOI: 10.3389/fmicb.2022.974473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
Antagonistic microorganisms are considered to be the most promising biological controls for plant disease. However, they are still not as popular as chemical pesticides due to complex environmental factors in the field. It is urgent to exploit their potential genetic characteristics and excellent properties to develop biopesticides with antimicrobial substances as the main components. Here, the serine protease Sp1 isolated from the Bacillus licheniformis W10 strain was confirmed to have a broad antifungal and antibacterial spectrum. Sp1 treatment significantly inhibited fungal vegetative growth and damaged the structure of hyphae, in accordance with that caused by W10 strain. Furthermore, Sp1 could activate the systemic resistance of peach twigs, fruits and tobacco. Dual comparative transcriptome analysis uncovered how Sp1 resisted the plant pathogenic fungus Phomopsis amygdali and the potential molecular resistance mechanisms of tobacco. In PSp1 vs. P. amygdali, RNA-seq identified 150 differentially expressed genes (DEGs) that were upregulated and 209 DEGs that were downregulated. Further analysis found that Sp1 might act on the energy supply and cell wall structure to inhibit the development of P. amygdali. In TSp1 vs. Xanthi tobacco, RNA-seq identified that 5937 DEGs were upregulated and 2929 DEGs were downregulated. DEGs were enriched in the metabolic biosynthesis pathways of secondary metabolites, plant hormone signal transduction, plant–pathogen interactions, and MAPK signaling pathway–plant and further found that the genes of salicylic acid (SA) and jasmonic acid (JA) signaling pathways were highly expressed and the contents of SA and JA increased significantly, suggesting that systemic resistance induced by Sp1 shares features of SAR and ISR. In addition, Sp1 might induce the plant defense responses of tobacco. This study provides insights into the broad-spectrum resistance molecular mechanism of Sp1, which could be used as a potential biocontrol product.
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Affiliation(s)
- Lina Yang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Chun Yan
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Shuai Peng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Lili Chen
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Junjie Guo
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Yihe Lu
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Lianwei Li
- The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province, School of Life Sciences, Jiangsu Normal University, Xuzhou, China
| | - Zhaolin Ji
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- *Correspondence: Zhaolin Ji,
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Zhou A, Wang F, Yin J, Peng R, Deng J, Shen D, Wu J, Liu X, Ma H. Antifungal action and induction of resistance by Bacillus sp. strain YYC 155 against Colletotrichum fructicola for control of anthracnose disease in Camellia oleifera. Front Microbiol 2022; 13:956642. [PMID: 36090068 PMCID: PMC9453557 DOI: 10.3389/fmicb.2022.956642] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/03/2022] [Indexed: 11/23/2022] Open
Abstract
Anthracnose disease caused by Colletotrichum fructicola is a serious disease that can afflict Camellia oleifera. Biological control is a rapidly growing approach for the management of plant diseases. In this study, we investigated the bio-control efficiency and the defense responses of an endophytic Bacillus tequilensis strain YYC 155, which was isolated from the root nodules of the Crotalaria pallida against anthracnose disease, caused by C. fructicola in C. oleifera. B. tequilensis YYC 155 exhibited significant inhibitory activity against anthracnose disease, caused by C. fructicola in C. oleifera. YYC 155 can secrete extracellular hydrolases, such as chitinase and β-1, 3-glucanase, which produce lipopeptides that are antimicrobial and forms strong biofilms. In addition, in treatment with YYC 155, the cell membranes of C. fructicola were injured and the leakage of cell contents from the mycelia of the pathogen was increased. Spraying 1 × 107 cells mL–1 bacterial suspension of YYC 155 on C. oleifera leaves enhanced the activity of key enzymes in C. oleifera associated with the phenylpropanoid pathway and increased the content of phenolic compounds and flavonoids. Results of our study indicate that B. tequilensis YYC 155 may potentially represent an effective biocontrol agent against anthracnose disease in C. oleifera.
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Affiliation(s)
- Aiting Zhou
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
| | - Fang Wang
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, School of Life Sciences, Hebei University, Baoding, China
- *Correspondence: Fang Wang,
| | - Jiabi Yin
- Dehong Forestry and Grassland Bureau, Dehong, China
| | - Ruiqi Peng
- Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, College of Biodiversity Conservation, Southwest Forestry University, Kunming, China
| | - Jia Deng
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
| | - Dezhou Shen
- Dehong Forestry and Grassland Bureau, Dehong, China
| | - Jianrong Wu
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, College of Biodiversity Conservation, Southwest Forestry University, Kunming, China
| | - Xiaoyun Liu
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, School of Life Sciences, Hebei University, Baoding, China
| | - Huancheng Ma
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- Huancheng Ma,
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Anti-Fungal Analysis of Bacillus subtilis DL76 on Conidiation, Appressorium Formation, Growth, Multiple Stress Response, and Pathogenicity in Magnaporthe oryzae. Int J Mol Sci 2022; 23:ijms23105314. [PMID: 35628122 PMCID: PMC9141136 DOI: 10.3390/ijms23105314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/03/2022] [Accepted: 05/06/2022] [Indexed: 02/04/2023] Open
Abstract
In recent years, biological control has gained more attention as a promising method to combat plant disease. Such severe diseases cited include rice blasts caused by Magnaporthe oryzae. However, more effective microbial strains with strong adaptability still need to be identified. Therefore, we sought to assess the conidia germination, and formation of appressorium of DL76 in Magnaporthe oryzae. Besides, we also aimed at understanding the growth, multiple stress response and pathogenicity in Magnaporthe oryzae. We isolated Bacillus subtilis DL76 from a rice farm, which observed a strong antimicrobial effect on M. oryzae. The sterilized culture filtrate of DL76 inhibited the growth of M. oryzae, which motivated us to deduce the influence of DL76 on the pathogenicity of M. oryzae. We screened the effect of Bacillus subtilis DL76 on M. oryzae guy11. It demonstrated that sterilized culture filtrate (1 × 107 CFU/mL) of DL76 can delay and even suppress the germination of conidia and (1 × 107 and 1 × 106 CFU/mL) prevent the formation of appressorium in vitro and in vivo. DL76 became hypersensitive to osmotic, oxidative, and cell wall degrading agents. In addition, the relative transcript levels of stress-responsive genes oxidative and osmotic were down-regulated by DL76 except for sod1, cat1, and cat2. In vivo assessment of the antifungal activity of Bacillus subtilis using conidia suspension of DL76 reduced the incidence and severity of rice blast. Conclusively, our results show that DL76 is essential for controlling rice blast by inhibiting conidiation, growth, multiple stress tolerance, and pathogenicity in M. oryzae.
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Swain BB, Mohapatra PK, Naik SK, Mukherjee AK. Biopriming for induction of disease resistance against pathogens in rice. PLANTA 2022; 255:113. [PMID: 35503188 DOI: 10.1007/s00425-022-03900-8] [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] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Rice is attacked by an armada of pathogens. Present review provides a critical evaluation of the potential of different biotic agents used to protect rice yield drop from pathogenicity and an account of unexplored areas, which might be taken into consideration to manage rice diseases. Rice (Oryza sativa L.), is the most important staple food of Asian countries. Rice production is significantly limited by a diversity of pathogens, leading to yield loss and deficit in current rice supply. Application of agrochemicals of diverse types has been considered as the only option to control pathogens and enhance rice production, thereby causing environmental concerns and making the pathogens resistant to the active ingredients. Increase in population and resistance of pathogen towards agrochemicals put pressure on the agronomists to search for safe, novel, eco-friendly alternative ways to manage rice pathogens. Inducing resistance in rice by using different biotic/abiotic agents provides an environmental friendly alternative way to effectively manage bacterial, fungal, and viral rice pathogens. In recent years, a number of protocols have been developed for inducing pathogen resistance by bio-priming of rice. However, a comprehensive evaluation of the potential of different biotic agents to protect rice crop loss from pathogens is hitherto lacking due to which the research on induction of defense against pathogens in rice is discontinuous. This review deals with the detailed analysis of the bacterial and fungal agents used to induce defense against rice pathogens, their mode of application, mechanism (physiological, biochemical, and molecular) of defense induction, and effect of defense induction on the yield of rice. It also provides an account of gaps in the research and the unexplored areas, which might be taken into consideration to effectively manage rice pathogens.
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Affiliation(s)
| | | | | | - Arup Kumar Mukherjee
- Molecular Plant Pathology Laboratory, Division of Crop Protection, ICAR-National Rice Research Institute, Cuttack, Odisha, 753006, India.
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Ali NS, Syafiq TM, Saad MM. Induction of Hydrolytic Enzymes: A Criterion for Biological Control Candidates against Fungal Pathogen. Fungal Biol 2022. [DOI: 10.1007/978-3-031-04805-0_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Antifungal Secondary Metabolites Against Blast Fungus Magnaporthe oryzae. Fungal Biol 2022. [DOI: 10.1007/978-3-031-04805-0_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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11
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Wang L, Zhou Y, Wang Y, Bu H, Dong T. Changes in cell wall metabolism and flavor qualities of mushrooms (Agaricus bernardii) under EMAP treatments during storage. Food Packag Shelf Life 2021. [DOI: 10.1016/j.fpsl.2021.100732] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Chakraborty M, Mahmud NU, Ullah C, Rahman M, Islam T. Biological and biorational management of blast diseases in cereals caused by Magnaporthe oryzae. Crit Rev Biotechnol 2021; 41:994-1022. [PMID: 34006149 DOI: 10.1080/07388551.2021.1898325] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Blast diseases, caused by the fungal pathogen Magnaporthe oryzae, are among the most destructive diseases that occur on at least 50 species of grasses, including cultivated cereals wheat, and rice. Although fungicidal control of blast diseases has widely been researched, development of resistance of the pathogen against commercially available products makes this approach unreliable. Novel approaches such as the application of biopesticides against the blast fungus are needed for sustainable management of this economically important disease. Antagonistic microorganisms, such as fungi and probiotic bacteria from diverse taxonomic genera were found to suppress blast fungi both in vitro and in vivo. Various classes of secondary metabolites, such as alkaloids, phenolics, and terpenoids of plant and microbial origin significantly inhibit fungal growth and may also be effective in managing blast diseases. Common modes of action of microbial biocontrol agents include: antibiosis, production of lytic enzymes, induction of systemic resistance in host plant, and competition for nutrients or space. However, the precise mechanism of biocontrol of the blast fungus by antagonistic microorganisms and/or their bioactive secondary metabolites is not well understood. Commercial formulations of biocontrol agents and bioactive natural products could be cost-effective and sustainable but their availability at this time is extremely limited. This review updates our knowledge on the infection pathway of the wheat blast fungus, catalogs naturally occurring biocontrol agents that may be effective against blast diseases, and discusses their role in sustainable management of the disease.
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Affiliation(s)
- Moutoshi Chakraborty
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
| | - Nur Uddin Mahmud
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
| | - Chhana Ullah
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Mahfuzur Rahman
- WVU Extension Service, West Virginia University, Morgantown, WV, USA
| | - Tofazzal Islam
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
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Samal P, Mohapatra PK, Naik SK, Mukherjee AK. Improved photosystem II and defense enzymes activity in rice (Oryza sativa) by biopriming against Xanthomonas oryzae pv. oryzae. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 48:298-311. [PMID: 33189157 DOI: 10.1071/fp20221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
Bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzae (Xoo) is a major threat to rice production as it accounts for loss up to 50% of annual rice grain yield. Xoo causes leaf tissue necrosis and as a result there is downregulation of the photosynthetic mechanisms of plant. Measurement of chl a fluorescence is an easy, fast, non-invasive and highly sensitive technique that can be used to understand plant health by measuring alterations in PSII activity, in response to different biotic and abiotic stresses. In the present investigation, rice seeds were bio-primed with two bacterial spp. (e.g. Bacillus subtilis and B. megaterium) and one fungal strain (i.e. Trichoderma erinaceum). The induction of defence against BB disease by bio-priming with biotic agents, was studied as response in alteration of PSII and defence enzymes activity. Field experiment was conducted with the best biotic agent; i.e. B. subtilis obtained from all experiments to study whether defence induction by it have any side effect on rice yield and biomass. Net house and field experiments have suggested that among all the biotic agents studied, bio-priming of rice seeds with B. subtilis has protected the photosynthetic machinery of plants from being damaged by BB without having any detrimental effect on rice grain yield.
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Affiliation(s)
- Pankajini Samal
- Molecular Plant Pathology Laboratory, Division of Crop Protection, ICAR-National Rice Research Institute, Cuttack-753006, Odisha, India
| | | | - Soumendra K Naik
- Department of Botany, Ravenshaw University, Cuttack-753003, Odisha, India
| | - Arup K Mukherjee
- Molecular Plant Pathology Laboratory, Division of Crop Protection, ICAR-National Rice Research Institute, Cuttack-753006, Odisha, India; and Corresponding author. ;
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Sha Y, Zeng Q, Sui S. Screening and Application of Bacillus Strains Isolated from Nonrhizospheric Rice Soil for the Biocontrol of Rice Blast. THE PLANT PATHOLOGY JOURNAL 2020; 36:231-243. [PMID: 32547339 PMCID: PMC7272846 DOI: 10.5423/ppj.oa.02.2020.0028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/01/2020] [Accepted: 04/27/2020] [Indexed: 05/05/2023]
Abstract
Rice blast, caused by Magnaporthe oryzae, is one of the most destructive rice diseases worldwide. The aim of this study was to screen bacterial isolates to efficiently prevent the occurrence of rice blast. A total of 232 bacterial isolates were extracted from nonrhizospheric rice soil and were screened for antifungal activity against M. oryzae using a leaf segment assay. Strains S170 and S9 showed significant antagonistic activity against M. oryzae in vitro and in leaf disk assays, and controlled M. oryzae infection under greenhouse conditions. The results showed that strains S170 and S9 could effectively control rice leaf blast and panicle neck blast after five spray treatments in field. This suggested that the bacterial strains S170 and S9 were valuable and promising for the biocontrol of rice disease caused by M. oryzae. Based on 16S rDNA, and gyrA and gyrB gene sequence analyses, S170 and S9 were identified as Bacillus amyloliquefaciens and B. pumilus, respectively. The research also demonstrated that B. amyloliquefaciens S170 and B. pumilus S9 could colonize rice plants to prevent pathogenic infection and evidently suppressed plant disease caused by 11 other plant pathogenic fungi. This is the first study to demonstrate that B. amyloliquefaciens and B. pumilus isolated from nonrhizospheric rice soil are capable of recolonizing internal rice stem tissues.
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Affiliation(s)
- Yuexia Sha
- Institute of Plant Protection, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750011, China
- Corresponding author. Phone) +86-951-6886807, FAX) +86-951-6886917, E-mail) , ORCID Yuexia Sha https://orcid.org/0000-0002-2426-8218
| | - Qingchao Zeng
- College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Shuting Sui
- College of Plant Protection, China Agricultural University, Beijing 100193, China
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Chakraborty M, Mahmud NU, Gupta DR, Tareq FS, Shin HJ, Islam T. Inhibitory Effects of Linear Lipopeptides From a Marine Bacillus subtilis on the Wheat Blast Fungus Magnaporthe oryzae Triticum. Front Microbiol 2020; 11:665. [PMID: 32425899 PMCID: PMC7203576 DOI: 10.3389/fmicb.2020.00665] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/23/2020] [Indexed: 12/20/2022] Open
Abstract
Wheat blast is a devastating fungal disease caused by a filamentous fungus, Magnaporthe oryzae Triticum (MoT) pathotype, which poses a serious threat to food security of South America and South Asia. In the course of screening novel bioactive secondary metabolites, we found that some secondary metabolites from a marine Bacillus subtilis strain 109GGC020 remarkably inhibited the growth of M. oryzae Triticum in vitro at 20 μg/disk. We tested a number of natural compounds derived from microorganisms and plants and found that five recently discovered linear non-cytotoxic lipopeptides, gageopeptides A-D (1-4) and gageotetrin B (5) from the strain 109GGC020 inhibited the growth of MoT mycelia in a dose-dependent manner. Among the five compounds studied, gageotetrin B (5) displayed the highest mycelial growth inhibition of MoT followed by gageopeptide C (3), gageopeptide D (4), gageopeptide A (1), and gageopeptide B (2) with minimum inhibitory concentrations (MICs) of 1.5, 2.5, 2.5, 10.0, and 10.0 μg/disk, respectively. Application of these natural compounds has also completely blocked formation of conidia in the MoT fungal mycelia in the agar medium. Further bioassay revealed that these compounds (1-5) inhibited the germination of MoT conidia and, if germinated, induced deformation of germ tube and/or abnormal appressoria. Interestingly, application of these linear lipopeptides (1-5) significantly suppressed wheat blast disease on detached wheat leaves. This is the first report of the inhibition of mycelial growth, conidiogenesis, conidial germination, and morphological alterations in the germinated conidia and suppression of wheat blast disease by linear lipopeptides from the strain of B. subtilis. A further study is needed to evaluate the mode of action of these natural compounds for considering them as biopesticides for managing this notorious cereal killer.
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Affiliation(s)
- Moutoshi Chakraborty
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Nur Uddin Mahmud
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Dipali Rani Gupta
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Fakir Shahidullah Tareq
- Department of Nutrition and Food Sciences, University of Maryland, College Park, College Park, MD, United States
| | - Hee Jae Shin
- Department of Marine Biotechnology, University of Science & Technology, Daejeon, South Korea
- Marine Natural Products Chemistry Laboratory, Korea Institute of Ocean Science & Technology, Busan, South Korea
| | - Tofazzal Islam
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
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16
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Huang W, Liu X, Zhou X, Wang X, Liu X, Liu H. Calcium Signaling Is Suppressed in Magnaporthe oryzae Conidia by Bacillus cereus HS24. PHYTOPATHOLOGY 2020; 110:309-316. [PMID: 31556343 DOI: 10.1094/phyto-08-18-0311-r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Rice yield is greatly reduced owing to rice blast, a polycyclic fungal disease caused by the ascomycete Magnaporthe oryzae. Previously, Bacillus cereus HS24, isolated from a rice farm, showed a strong antimicrobial effect toward M. oryzae. To better exploit it as a biocontrol agent, HS24 was studied for the mechanism that it uses to suppress rice blast. Conidium germination in M. oryzae was significantly inhibited by HS24, whereby inhibition reached 97.8% at the concentration of 107 CFU/ml. The transcription levels of Ca2+/calmodulin-dependent protein kinase II, PMC1, and CCH1, key genes involved in the M. oryzae Ca2+ signaling pathway, were significantly decreased in HS24-treated conidia at high concentration. The treatment of M. oryzae with the corresponding Ca2+ signaling pathway inhibitors KN-93, verapamil, and cyclopiazonic acid significantly reduced conidium germination. This inhibitory effect was found to be concentration dependent, similar to the HS24 treatment. We also found that HS24 was able to decrease the intracellular free Ca2+ concentration in M. oryzae conidia significantly. The addition of exogenous Ca2+ did not diminish the inhibitory effect of HS24 on the reduction of intracellular free Ca2+ concentration and the level of conidium germination. In conclusion, B. cereus HS24 at high concentration prevents extracellular Ca2+ from entering the conidia in M. oryzae, causes a significant reduction of intracellular free Ca2+ concentration, and results in the inhibition of conidium germination.
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Affiliation(s)
- Wenxiang Huang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
| | - Xingyu Liu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
| | - Xiaosi Zhou
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
| | - Xiaoli Wang
- Jiangsu Provincial Key Construction Laboratory of Probiotics Preparation, Huaiyin Institute of Technology, Huaian 223003, China
| | - Xinyu Liu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, 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
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education, Nanjing 210095, China
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Identification and characterization of a serine protease from Bacillus licheniformis W10: A potential antifungal agent. Int J Biol Macromol 2019; 145:594-603. [PMID: 31891703 DOI: 10.1016/j.ijbiomac.2019.12.216] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/11/2019] [Accepted: 12/24/2019] [Indexed: 12/17/2022]
Abstract
Bacillus licheniformis W10 is a strain of biocontrol bacteria that was obtained from plant rhizosphere screening. In this study, we purified, identified, and carried out bioinformatics analysis of the W10 antifungal protein from Bacillus licheniformis. Mass spectrometry analysis was carried out by passing the antifungal protein through a high-resolution time-of-flight mass spectrometer. Mascot searches of the tandem mass spectrometry data identified this antifungal protein as a serine protease, and the 1347 bp gene encoding this protein was cloned. Bioinformatics analysis of this protein indicated that it contains 448 amino acid residues, has a molecular weight of 48,794.16 Da and an isoelectric point of 6.04, and is a hydrophilic protein. In the secondary and tertiary structure of this protein, the proportion of α-helices and β-folds is similar, and the protein possesses a Peptidase_S8 conserved domain. Using BApNA as a substrate, it was found that the serine protease inhibitor phenylmethylsulfonyl fluoride (PMSF) can inhibit the W10 antifungal protein. PMSF concurrently reduced the inhibitory effects of the antifungal protein on Botrytis cinerea, showing that the W10 antifungal protein possesses serine protease activity. The W10 antifungal protein has good thermal stability. The study implies potential of this enzyme for biocontrol of fungal plant pathogens.
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Targeted transcriptional and proteomic studies explicate specific roles of Bacillus subtilis iturin A, fengycin, and surfactin on elicitation of defensive systems in mandarin fruit during stress. PLoS One 2019; 14:e0217202. [PMID: 31120923 PMCID: PMC6532888 DOI: 10.1371/journal.pone.0217202] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 05/07/2019] [Indexed: 02/07/2023] Open
Abstract
Application of Bacillus cyclic lipopeptides (CLPs); fengycin, iturin A and surfactin has shown a great potential in controlling the spread of green mold pathogen invasion (Penicillium digitatum) in wounded mandarin fruit during postharvest period. The limited defensive protein profiles followed specific expression of pivotal genes relating to plant hormone mediating signaling pathways of the CLPs’ action on stimulating host plant resistance have been exhibited. The present study aimed to elucidate the specific effect of individual CLP obtained from Bacillus subtilis ABS-S14 as elicitor role on activation of plant defensive system at transcriptional and proteomic levels with and without P. digitatum co-application in mandarin fruit. Fengycin and iturin A elevated the gene expression of PAL, ACS1, ACO, CHI, and GLU while significantly stimulating plant POD transcription was only detected in the treatments of surfactin both with and without following P. digitatum. An increase of LOX and PR1 gene transcripts was determined in the treatments of individual CLP with fungal pathogen co-application. Fengycin activated production of unique defensive proteins such as protein involved in ubiquinone biosynthetic process in treated flavedo without P. digitatum infection. Proteins involved in the auxin modulating pathway were present in the iturin A and surfactin treatments. CLP-protein binding assay following proteome analysis reveals that iturin A attached to 12-oxophytodienoate reductase 2 involved in the oxylipin biosynthetic process required for jasmonic acid production which is implicated in induced systemic resistance (ISR). This study suggests specific elicitor action of individual CLP, particularly iturin A showed the most powerful in stimulating the ISR system in response to stresses in postharvest mandarins.
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Tunsagool P, Jutidamrongphan W, Phaonakrop N, Jaresitthikunchai J, Roytrakul S, Leelasuphakul W. Insights into stress responses in mandarins triggered by Bacillus subtilis cyclic lipopeptides and exogenous plant hormones upon Penicillium digitatum infection. PLANT CELL REPORTS 2019; 38:559-575. [PMID: 30715581 DOI: 10.1007/s00299-019-02386-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/25/2019] [Indexed: 05/11/2023]
Abstract
Bacillus subtilis CLP extract activates defense gene expression and increases the unique protein production involving in pathways of ISR, SAR, ubiquitin-proteasome system, and glycolysis for stress responses in flavedo tissues. Cyclic lipopeptides (CLPs) of Bacillus subtilis ABS-S14 had ability to activate plant defensive pathways, increase resistance and control green mold rot caused by Penicillium digitatum in mandarin fruit. The current study investigated transcriptional and proteomic data to highlight the unique induction effect of CLPs produced by B. subtilis ABS-S14 on the defense mechanism of mandarins in response to P. digitatum attack, and their differences from those following the exogenous plant hormone application. The proteomic patterns of the flavedo tissues as affected by Bacillus CLP extract, salicylic acid (SA), methyl jasmonate (MeJA), and ethephon (Et) were explored. qPCR analysis revealed the great effects of CLP extract in enhancing the transcription of PAL, ACS1, GLU, POD, and PR1. Tryptic peptides by LC-MS analysis between treatments with and without fungal infection were compared. B. subtilis CLP extract empowered the plant's immune response to wound stress by the significant production of calmodulin-binding receptor-like cytoplasmic kinase 2, molybdenum cofactor sulfurase, and NAD+-dependent glyceraldehyde-3-phosphate dehydrogenase. Ubiquitin carrier protein abundance was developed only in the treated flavedo with CLP extract coupled with P. digitatum infection. The gene expression and overall proteome findings involving pathways of ubiquitin proteasome system, ISR, SAR, and energy production provide a new insight into the molecular mechanisms of the antagonist B. subtilis ABS-S14 inducing resistance against green mold in mandarins.
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Affiliation(s)
- Paiboon Tunsagool
- Department of Biochemistry, Prince of Songkla University, Songkhla, 90112, Thailand
| | | | - Narumon Phaonakrop
- Proteomics Research Laboratory, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park (TSP), Pathum Thani, 12120, Thailand
| | - Janthima Jaresitthikunchai
- Proteomics Research Laboratory, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park (TSP), Pathum Thani, 12120, Thailand
| | - Sittiruk Roytrakul
- Proteomics Research Laboratory, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park (TSP), Pathum Thani, 12120, Thailand
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20
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Lastochkina O, Seifikalhor M, Aliniaeifard S, Baymiev A, Pusenkova L, Garipova S, Kulabuhova D, Maksimov I. Bacillus Spp.: Efficient Biotic Strategy to Control Postharvest Diseases of Fruits and Vegetables. PLANTS 2019; 8:plants8040097. [PMID: 31013814 PMCID: PMC6524353 DOI: 10.3390/plants8040097] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 03/30/2019] [Accepted: 04/03/2019] [Indexed: 12/13/2022]
Abstract
: Postharvest diseases significantly reduce the shelf-life of harvested fruits/vegetables worldwide. Bacillus spp. are considered to be an eco-friendly and bio-safe alternative to traditional chemical fungicides/bactericides due to their intrinsic ability to induce native anti-stress pathways in plants. This review compiles information from multiple scientific databases (Scopus, ScienceDirect, GoogleScholar, ResearchGate, etc.) using the keywords "postharvest diseases", "Bacillus", "Bacillus subtilis", "biocontrol", "storage", "losses", and "fruits/vegetables". To date, numerous examples of successful Bacillus spp. application in controlling various postharvest-emerged pathogens of different fruits/vegetables during handling, transportation, and storage have been described in the literature. The mechanism/s of such action is/are still largely unknown; however, it is suggested that they include: i) competition for space/nutrients with pathogens; ii) production of various bio-active substances with antibiotic activity and cell wall-degrading compounds; and iii) induction of systemic resistance. With that, Bacillus efficiency may depend on various factors including strain characteristics (epiphytes or endophytes), application methods (before or after harvest/storage), type of pathogens/hosts, etc. Endophytic B. subtilis-based products can be more effective because they colonize internal plant tissues and are less dependent on external environmental factors while protecting cells inside. Nevertheless, the mechanism/s of Bacillus action on harvested fruits/vegetables is largely unknown and requires further detailed investigations to fully realize their potential in agricultural/food industries.
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Affiliation(s)
- Oksana Lastochkina
- Bashkir Research Institute of Agriculture, Ufa Federal Research Centre of the Russian Academy of Sciences, 450059 Ufa, Russia.
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia.
| | - Maryam Seifikalhor
- Department of Plant Biology, Center of Excellence in Phylogeny of Living Organisms in Iran, School of Biology, College of Science, University of Tehran, Tehran 14155, Iran.
| | - Sasan Aliniaeifard
- Department of Horticulture, College of Aburaihan, University of Tehran, Pakdasht, Tehran 3391653775, Iran.
| | - Andrey Baymiev
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia.
- Department of Biology, Bashkir State University, 450076 Ufa, Russia.
| | - Ludmila Pusenkova
- Bashkir Research Institute of Agriculture, Ufa Federal Research Centre of the Russian Academy of Sciences, 450059 Ufa, Russia.
| | - Svetlana Garipova
- Bashkir Research Institute of Agriculture, Ufa Federal Research Centre of the Russian Academy of Sciences, 450059 Ufa, Russia.
- Department of Biology, Bashkir State University, 450076 Ufa, Russia.
| | - Darya Kulabuhova
- Bashkir Research Institute of Agriculture, Ufa Federal Research Centre of the Russian Academy of Sciences, 450059 Ufa, Russia.
| | - Igor Maksimov
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, 450054 Ufa, Russia.
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Lastochkina O. Bacillus subtilis-Mediated Abiotic Stress Tolerance in Plants. BACILLI IN CLIMATE RESILIENT AGRICULTURE AND BIOPROSPECTING 2019:97-133. [DOI: 10.1007/978-3-030-15175-1_6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
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El-Sayed ASA, Akbar A, Iqrar I, Ali R, Norman D, Brennan M, Ali GS. A glucanolytic Pseudomonas sp. associated with Smilax bona-nox L. displays strong activity against Phytophthora parasitica. Microbiol Res 2017; 207:140-152. [PMID: 29458848 DOI: 10.1016/j.micres.2017.11.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 11/07/2017] [Accepted: 11/28/2017] [Indexed: 02/04/2023]
Abstract
Biological control is an eco-friendly strategy for mitigating and controlling plant diseases with negligible effects on human health and environment. Biocontrol agents are mostly isolated from field crops, and microbiomes associated with wild native plants is underexplored. The main objective of this study was to characterize the bacterial isolates associated with Smilax bona-nox L, a successful wild plant with invasive growth habits. Forty morphologically distinct bacterial isolates were recovered from S. bona-nox. Based on 16S rRNA gene sequencing, these isolates belonged to 12 different genera namely Burkholderia, Pseudomonas, Xenophilus, Stenotrophomonas, Pantoea, Enterobactriaceae, Kosakonia, Microbacterium, Curtobacterium, Caulobacter, Lysinibacillus and Bacillus. Among them, Pseudomonas sp. EA6 and Pseudomonas sp. EA14 displayed the highest potential for inhibition of Phytophthora. Based on sequence analysis of rpoD gene, these isolates revealed a 97% identity with a Pseudomonas fluorescence strain. Bioactivity-driven assays for finding bioactive compounds revealed that crude proteins of Pseudomonas sp. EA6 inhibited mycelial growth of P. parasitica, whereas crude proteins of Pseudomonas sp. EA14 displayed negligible activity. Fractionation and enzymatic analyses revealed that the bioactivity of Pseudomonas sp. EA6 was mostly due to glucanolytic enzymes. Comparison of chromatographic profile and bioactivity assays indicated that the secreted glucanolytic enzymes consisted of β-1,3 and β-1,4 glucanases, which acted together in hydrolyzing Phytophthora cell walls. Since the biological activity of the crude glucanolytic extract was >60-fold higher than the purified β-1,3 glucanase, the glucanolytic enzyme system of Pseudomonas sp. EA6 likely acts synergistically in cell wall hydrolysis of P. parasitica.
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Affiliation(s)
- Ashraf S A El-Sayed
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA; Microbiology and Botany Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Asma Akbar
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA
| | - Irum Iqrar
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA
| | - Robina Ali
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA
| | - David Norman
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA
| | - Mary Brennan
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA
| | - Gul Shad Ali
- Mid-Florida Research and Education Center, Department of Plant pathology, University of Florida/Institute of Food and Agricultural Sciences, Apopka, FL, USA.
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Ni Z, Xu S, Bu J, Ying T. Secondary metabolism associated with softening of shiitake mushroom (Lentinula edodes) induced by O2depletion and CO2accumulation. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13512] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Zhendan Ni
- College of Biosystems Engineering and Food Science; Fuli Institute of Food Science; Key Laboratory of Agriculture Ministry for Postharvest Handling of Agro-Products; Zhejiang Key Laboratory for Agro-Food Processing; Zhejiang University; Yuhangtang Road 588 Hangzhou 310058 China
| | - Shixiang Xu
- Natural Medicine Institute of Zhejiang Yangshengtang Co., LTD; Hangzhou 310007 China
| | - Jianwen Bu
- Department of Food Science and Engineering; Shandong Agriculture and Engineering University; Jinan 250100 China
| | - Tiejin Ying
- College of Biosystems Engineering and Food Science; Fuli Institute of Food Science; Key Laboratory of Agriculture Ministry for Postharvest Handling of Agro-Products; Zhejiang Key Laboratory for Agro-Food Processing; Zhejiang University; Yuhangtang Road 588 Hangzhou 310058 China
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Shafi J, Tian H, Ji M. Bacillus species as versatile weapons for plant pathogens: a review. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1286950] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Jamil Shafi
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang, Liaoning, P. R. China
| | - Hui Tian
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang, Liaoning, P. R. China
| | - Mingshan Ji
- Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang, Liaoning, P. R. China
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25
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Antimycotic Role of Soil Bacillus sp. Against Rice Pathogens: A Biocontrol Prospective. Microb Biotechnol 2017. [DOI: 10.1007/978-981-10-6847-8_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Sha Y, Wang Q, Li Y. Suppression of Magnaporthe oryzae and interaction between Bacillus subtilis and rice plants in the control of rice blast. SPRINGERPLUS 2016; 5:1238. [PMID: 27536521 PMCID: PMC4971003 DOI: 10.1186/s40064-016-2858-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 07/18/2016] [Indexed: 01/19/2023]
Abstract
Magnaporthe oryzae, the causative pathogen of rice blast, has caused extensive losses to rice cultivation worldwide. Strains of the bacterium Bacillus subtilis have been used as biocontrol agents against rice blast. However, little has been reported about the interaction between B. subtilis and the rice plant and its mechanism of action. Here, the colonization process and induced disease resistance by B. subtilis SYX04 and SYX20 in rice plants was examined. Strains of B. subtilis labeled with green fluorescent protein reached population of more than 5 × 106 CFU/g after 20 days on mature rice leaves and were detected after 3 days on newly grown leaves. Results showed that SYX04 and SYX20 not only inhibited spore germination, germ tube length, and appressorial formation but also caused a series of alterations in the structures of hyphae and conidia. The cell walls and membrane structures of the fungus showed ultrastructural abnormalities, which became severely degraded as observed through scanning electron microscopy and transmission electron microscopy. The mixture of both B. subtilis and M. oryzae resulted in enhanced activity of peroxidase, and polyphenol oxidase while there was significantly more superoxide dismutase activity in plants that had been sprayed with B.subtilis alone. The present study suggests that colonized SYX04 and SYX20 strains protected rice plants and exhibited antifungal activity and induced systemic resistance, thus indicating their potential biological control agents.
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Affiliation(s)
- Yuexia Sha
- Department of Plant Pathology, China Agricultural University, 2 West Yuanmingyuan Rd., Haidian District, Beijing, 100193 China ; Key Laboratory of Plant Pathology, Ministry of Agriculture, China Agricultural University, Beijing, 100193 China
| | - Qi Wang
- Department of Plant Pathology, China Agricultural University, 2 West Yuanmingyuan Rd., Haidian District, Beijing, 100193 China ; Key Laboratory of Plant Pathology, Ministry of Agriculture, China Agricultural University, Beijing, 100193 China
| | - Yan Li
- Department of Plant Pathology, China Agricultural University, 2 West Yuanmingyuan Rd., Haidian District, Beijing, 100193 China ; Key Laboratory of Plant Pathology, Ministry of Agriculture, China Agricultural University, Beijing, 100193 China
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27
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Production, Partial Purification and Characterization of Enzyme Cocktail from Trichoderma citrinoviride AUKAR04 Through Solid-State Fermentation. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2016. [DOI: 10.1007/s13369-016-2110-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Gajera HP, Savaliya DD, Hirapara DG, Patel SV, Golakiya BA. Biocontrol Mechanism of Bacillus for Fusarium Wilt Management in Cumin (Cuminum cyminum L.). Fungal Biol 2016. [DOI: 10.1007/978-3-319-27312-9_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Chen Y, Xu H, Zhou M, Wang Y, Wang S, Zhang J. Salecan Enhances the Activities of β-1,3-Glucanase and Decreases the Biomass of Soil-Borne Fungi. PLoS One 2015; 10:e0134799. [PMID: 26247592 PMCID: PMC4527723 DOI: 10.1371/journal.pone.0134799] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 07/14/2015] [Indexed: 01/09/2023] Open
Abstract
Salecan, a linear extracellular polysaccharide consisting of β-1,3-D-glucan, has potential applications in the food, pharmaceutical and cosmetic industries. The objective of this study was to evaluate the effects of salecan on soil microbial communities in a vegetable patch. Compositional shifts in the genetic structure of indigenous soil bacterial and fungal communities were monitored using culture-dependent dilution plating, culture-independent PCR-denaturing gradient gel electrophoresis (DGGE) and quantitative PCR. After 60 days, soil microorganism counts showed no significant variation in bacterial density and a marked decrease in the numbers of fungi. The DGGE profiles revealed that salecan changed the composition of the microbial community in soil by increasing the amount of Bacillus strains and decreasing the amount of Fusarium strains. Quantitative PCR confirmed that the populations of the soil-borne fungi Fusarium oxysporum and Trichoderma spp. were decreased approximately 6- and 2-fold, respectively, in soil containing salecan. This decrease in the amount of fungi can be explained by salecan inducing an increase in the activities of β-1,3-glucanase in the soil. These results suggest the promising application of salecan for biological control of pathogens of soil-borne fungi.
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Affiliation(s)
- Yunmei Chen
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, China
| | - Haiyang Xu
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, China
| | - Mengyi Zhou
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, China
| | - Yang Wang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, China
| | - Shiming Wang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, China
- * E-mail: (JZ); (SW)
| | - Jianfa Zhang
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing, China
- * E-mail: (JZ); (SW)
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Saccharomyces cerevisiae: A novel and efficient biological control agent for Colletotrichum acutatum during pre-harvest. Microbiol Res 2015; 175:93-9. [PMID: 25960430 DOI: 10.1016/j.micres.2015.04.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/01/2015] [Accepted: 04/04/2015] [Indexed: 11/21/2022]
Abstract
In this study, we evaluated the efficiency of six isolates of Saccharomyces cerevisiae in controlling Colletotrichum acutatum, the causal agent of postbloom fruit drop that occur in pre-harvest citrus. We analyzed the mechanisms of action involved in biological control such as: production of antifungal compounds, nutrient competition, detection of killer activity, and production of hydrolytic enzymes of the isolates of S. cerevisiae on C. acutatum and their efficiency in controlling postbloom fruit drop on detached citrus flowers. Our results showed that all six S. cerevisiae isolates produced antifungal compounds, competed for nutrients, inhibited pathogen germination, and produced killer activity and hydrolytic enzymes when in contact with the fungus wall. The isolates were able to control the disease when detached flowers were artificially inoculated, both preventively and curatively. In this work we identified a novel potential biological control agent for C. acutatum during pre-harvest. This is the first report of yeast efficiency for the biocontrol of postbloom fruit drop, which represents an important contribution to the field of biocontrol of diseases affecting citrus populations worldwide.
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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: 21] [Impact Index Per Article: 2.1] [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+).
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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
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Zhao B, Jiang Y, Jin Y, Zhang J. Function of bacterial cells and their exuded extracellular polymeric substances (EPS) in virus removal by red soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:9242-9250. [PMID: 24723350 DOI: 10.1007/s11356-014-2829-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
The potential influence of autochthonous microorganisms on virus fate in soil is usually determined through extreme conditions of sterilization vs. nonsterilization; however, the relative importance of microbial cells and their exudates remains unclear. In this study, bacterial cells (cell) were harvested, and their exuded extracellular polymeric substances (EPS) were extracted from three strains of bacteria, namely, Gram-negative bacteria Pseudomonas putida and Pseudomonas aeruginosa as well as Gram-positive bacterium Bacillus subtilis. This study aimed to evaluate virus removal in solutions in the presence of cell, EPS, and their combination (cell/EPS), as well as to investigate how their presence affects virus removal efficiencies by four red soils based on batch experiments. Results showed that virus removal percentage in solutions ranged from 11 to 23 in the presence of cells only and from 12 to 15 in the presence of EPS only. The removal percentage in the combined cell/EPS treatment can be estimated by summing the results achieved by the cell and EPS treatments, separately. Meanwhile, cell presence had a negligible effect on virus removal by red soils. EPS and combined cell/EPS significantly reduced virus removal by 20 to 69% and 16 to 50%, respectively, which indicated that EPS served a dominant function in reducing virus removal. This study clearly demonstrated that the prediction of virus removal by red soils must consider the effect of bacteria, especially those producing large quantities of EPS, which can be responsible for the underestimation of viral load in certain studies.
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Affiliation(s)
- Bingzi Zhao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, PO Box 821, 71 East Beijing Road, Nanjing, 210008, People's Republic of China,
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Spence CA, Raman V, Donofrio NM, Bais HP. Global gene expression in rice blast pathogen Magnaporthe oryzae treated with a natural rice soil isolate. PLANTA 2014; 239:171-85. [PMID: 24126723 DOI: 10.1007/s00425-013-1974-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 10/03/2013] [Indexed: 05/08/2023]
Abstract
The rhizospheric microbiome is comprised of many microbes, some of which reduce the virulence of their phytopathogenic neighbors; however, the mechanisms underlying these interactions are largely unknown. Rice soil isolate Pseudomonas chlororaphis EA105 strongly inhibits Magnaporthe oryzae's in vitro growth by restricting fungal diameter as well as inhibiting the formation of the appressorium, required for penetration. We were interested in elucidating M. oryzae's response to EA105 treatment, and utilized a microarray approach to obtain a global perspective of EA105 elicited changes in this pathogen. Based on this analysis, three genes of interest were knocked out in M. oryzae 70-15, and their sensitivity to EA105 treatment as well as their ability to infect rice was determined. Priming rice plants with EA105 prior to M. oryzae infection decreased lesion size, and the mutants were tested to see if this effect was retained. A null 70-15 mutant in a trichothecene biosynthesis gene showed less susceptibility to bacterial treatment, forming more appressoria than the parental type 70-15. A similar pattern was seen in a null mutant for a stress-inducible protein, MGG_03098. In addition, when this mutant was inoculated onto the leaves of EA105-primed rice plants, lesions were reduced to a greater extent than in 70-15, implicating the lack of this gene with an increased ISR response in rice. Understanding the global effect of biocontrol bacteria on phytopathogens is a key for developing successful and lasting solutions to crop loss caused by plant diseases and has the potential to greatly increase food supply.
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Affiliation(s)
- Carla A Spence
- Department of Biological Sciences, University of Delaware, Newark, DE, 19716, USA,
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Niranjana SR, Hariprasad P. Understanding the Mechanism Involved in PGPR-Mediated Growth Promotion and Suppression of Biotic and Abiotic Stress in Plants. Fungal Biol 2014. [DOI: 10.1007/978-1-4939-1188-2_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Factors affecting antifungal activity of Streptomyces philanthi RM-1-138 against Rhizoctonia solani. World J Microbiol Biotechnol 2013; 30:323-9. [DOI: 10.1007/s11274-013-1424-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Accepted: 07/01/2013] [Indexed: 10/26/2022]
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Wang Y, Liu S, Mao X, Zhang Z, Jiang H, Chai R, Qiu H, Wang J, Du X, Li B, Sun G. Identification and characterization of rhizosphere fungal strain MF-91 antagonistic to rice blast and sheath blight pathogens. J Appl Microbiol 2013; 114:1480-90. [DOI: 10.1111/jam.12153] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 01/13/2013] [Accepted: 01/24/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Y.L. Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - S.Y. Liu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - X.Q. Mao
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Z. Zhang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - H. Jiang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - R.Y. Chai
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - H.P. Qiu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - J.Y. Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - X.F. Du
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - B. Li
- State Key Laboratory of Rice Biology; Institute of Biotechnology; Zhejiang University; Hangzhou China
| | - G.C. Sun
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; Institute of Plant Protection and Microbiology; Zhejiang Academy of Agricultural Sciences; Hangzhou China
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Selection of a Streptomyces strain able to produce cell wall degrading enzymes and active against Sclerotinia sclerotiorum. J Microbiol 2012; 50:798-806. [DOI: 10.1007/s12275-012-2060-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Accepted: 06/01/2012] [Indexed: 10/27/2022]
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Zhou X, Lu Z, Lv F, Zhao H, Wang Y, Bie X. Antagonistic action of Bacillus subtilis strain fmbj on the postharvest pathogen Rhizopus stolonifer. J Food Sci 2012; 76:M254-9. [PMID: 22417435 DOI: 10.1111/j.1750-3841.2011.02160.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The antagonistic activities of Bacillus subtilis fmbj against the Rhizopus stolonifer pathogen causing peach soft rot disease were studied in this paper. Bacillus subtilis fmbj exhibited a high antifungal effect on the mycelium growth, sportulation, and germ tube elongation of R. stolonifer with the inhibition rate of 86.5% and 97.42%, respectively, spore germination rate of 20% under antagonist strain concentration of 10⁸ CFU/mL. By using of scanning electron microscope (SEM) and transmission electron microscope (TEM), it was observed that B. subtilis fmbj strain strongly induced morphological abnormalities of R. stolonifer and destroyed structure of hypha and spore. When hypha cell wall of R. stolonifer was damaged, the organelles and cytoplasms inside cell would exude, which led to cell death.
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Affiliation(s)
- Xiaohong Zhou
- College of Food Science and Technology, Nanjing Agricultural Univ., Key Laboratory of Food Processing and Quality Control, Ministry of Agriculture of China, 1 Weigang Nanjing 210095, P.R. China
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Yuan J, Raza W, Huang Q, Shen Q. The ultrasound-assisted extraction and identification of antifungal substances fromB. amyloliquefaciensstrain NJN-6 suppressingFusarium oxysporum. J Basic Microbiol 2012; 52:721-30. [DOI: 10.1002/jobm.201100560] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 01/05/2012] [Indexed: 11/11/2022]
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Park JK, Kim JD, Park YI, Kim SK. Purification and characterization of a 1,3-β-d-glucanase from Streptomyces torulosus PCPOK-0324. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.09.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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41
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Pseudomonas and other Microbes in Disease-Suppressive Soils. SUSTAINABLE AGRICULTURE REVIEWS 2012. [DOI: 10.1007/978-94-007-4113-3_5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Characterization of a novel chitinase from a moderately halophilic bacterium, Virgibacillus marismortui strain M3-23. ANN MICROBIOL 2011. [DOI: 10.1007/s13213-011-0324-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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43
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Production and partial characterization of chitinase from a halotolerant Planococcus rifitoensis strain M2-26. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0259-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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Quantitative changes of plant defense enzymes and phytohormone in biocontrol of cucumber Fusarium wilt by Bacillus subtilis B579. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0222-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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45
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Essghaier B, Fardeau ML, Cayol JL, Hajlaoui MR, Boudabous A, Jijakli H, Sadfi-Zouaoui N. Biological control of grey mould in strawberry fruits by halophilic bacteria. J Appl Microbiol 2009; 106:833-46. [PMID: 19191973 DOI: 10.1111/j.1365-2672.2008.04053.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Grey mould caused by Botrytis cinerea is an economically important disease of strawberries in Tunisia and worldwide. The aim of this study was to select effective halophilic bacteria from hypersaline ecosystems and evaluate the abilities of antifungal bacteria to secrete extracellular hydrolytic enzymes, anti-Botrytis metabolites and volatiles. METHODS AND RESULTS Grey mould was reduced in strawberry fruits treated with halophilic antagonists and artificially inoculated with B. cinerea. Thirty strains (20.2%) were active against the pathogen and reduced the percentage of fruits infected after 3 days of storage at 20 degrees C, from 50% to 91.66%. The antagonists were characterized by phenotypic tests and 16S rDNA sequencing. They were identified as belonging to one of the species: Virgibacillus marismortui, B. subtilis, B. pumilus, B. licheniformis, Terribacillus halophilus, Halomonas elongata, Planococcus rifietoensis, Staphylococcus equorum and Staphylococcus sp. The effective isolates were tested for antifungal secondary metabolites. CONCLUSIONS Moderately halophilic bacteria may be useful in biological control against this pathogen during postharvest storage of strawberries. SIGNIFICANCE AND IMPACT OF THE STUDY The use of such bacteria may constitute an important alternative to synthetic fungicides. These moderate halophiles can be exploited in commercial production and application of the effective strains under storage and greenhouse conditions.
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Affiliation(s)
- B Essghaier
- Laboratoire Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Campus Universitaire, Tunisia
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Wiwattanapatapee R, Chumthong A, Pengnoo A, Kanjanamaneesathian M. Effervescent fast-disintegrating bacterial formulation for biological control of rice sheath blight. J Control Release 2007; 119:229-35. [DOI: 10.1016/j.jconrel.2007.01.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2006] [Revised: 01/17/2007] [Accepted: 01/21/2007] [Indexed: 11/26/2022]
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