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Yi Y, Luan P, Fan M, Wu X, Sun Z, Shang Z, Yang Y, Li C. Antifungal efficacy of Bacillus amyloliquefaciens ZK-9 against Fusarium graminearum and analysis of the potential mechanism of its lipopeptides. Int J Food Microbiol 2024; 422:110821. [PMID: 38970998 DOI: 10.1016/j.ijfoodmicro.2024.110821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 06/22/2024] [Accepted: 06/29/2024] [Indexed: 07/08/2024]
Abstract
Fusarium graminearum is a destructive fungal pathogen that seriously threatens wheat production and quality. In the management of fungal infections, biological control is an environmentally friendly and sustainable approach. Here, the antagonistic strain ZK-9 with a broad antifungal activity was identified as Bacillus amyloliquefaciens. ZK-9 could produce extracellular enzymes such as pectinase, protease, cellulase, and amylase, as well as plant growth-promoting substances including IAA and siderophore. Lipopeptides extracted from strain ZK-9 had the high inhibitory effects on the mycelia of F. graminearum with the minimum inhibitory concentration (MIC) of 0.8 mg/mL. Investigation on the action mechanism of lipopeptides showed they could change the morphology of mycelia, damage the cell membrane, lower the content of ergosterol and increase the relative conductivity of membrane, cause nucleic acid and proteins leaking out from the cells, and disrupt the cell membrane permeability. Furthermore, metabolomic analysis of F. graminearum revealed the significant differences in the expression of 100 metabolites between the lipopeptides treatment group and the control group, which were associated with various metabolic pathways, mainly including amino acid biosynthesis, pentose, glucuronate and glycerophospholipid metabolism. In addition, strain ZK-9 inhibited Fusarium crown rot (FCR) with a biocontrol efficacy of 82.14 % and increased the plant height and root length by 24.23 % and 93.25 %, respectively. Moreover, the field control efficacy of strain ZK-9 on Fusarium head blight (FHB) was 71.76 %, and the DON content in wheat grains was significantly reduced by 69.9 %. This study puts valuable insights into the antifungal mechanism of lipopeptides against F. graminearum, and provides a promising biocontrol agent for controlling F. graminearum.
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Affiliation(s)
- Yanjie Yi
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; Food Laboratory of Zhongyuan, Luohe 462300, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China.
| | - Pengyu Luan
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; Food Laboratory of Zhongyuan, Luohe 462300, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Minghao Fan
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Xingquan Wu
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Zhongke Sun
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Zijun Shang
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Yuzhen Yang
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China
| | - Chengwei Li
- School of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China; The Key Laboratory of Functional Molecules for Biomedical Research, Zhengzhou 450001, China.
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Lin X, Wang J, Hou Z, Ren S, Wang W, Yang Y, Yi Y, Zhang Y, Li R. Antifungal Potential and Mechanism of Bacillus velezensis HeN-7 Isolated from Tobacco Leaves on Bipolaris sorokiniana. Curr Microbiol 2024; 81:340. [PMID: 39225871 DOI: 10.1007/s00284-024-03858-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 08/18/2024] [Indexed: 09/04/2024]
Abstract
Wheat leaf blight caused by Bipolaris sorokiniana is a widespread fungal disease that poses a serious risk to wheat. Biological control without causing environmental pollution is one of the safest and most effective method to control plant diseases. The antagonistic bacterial strain HeN-7 (identified as Bacillus velezensis) was isolated from tobacco leaves cultivated in Henan province, China. The results of different concentrations of cell-free supernatant (CFS) from HeN-7 culture against B. sorokiniana mycelia showed that 20% HeN-7 CFS (v/v) reached the maximum inhibition rate of 96%. In the potted plants control assay, B. velezensis HeN-7 CFS exhibited remarkable biocontrol activity on the wheat infected with B. sorokiniana, the best pot control efficacy was 65% at 20% CFS. The research on the mechanism of action demonstrated that HeN-7 CFS induced the membrane lipid peroxidation in B. sorokiniana, leading to the disruption of cell membrane integrity and resulting in the leakage of cell contents; in addition, the intracellular mitochondrial membrane potential in mycelium dissipated and reactive oxygen species accumulated, thereby inhibiting the growth of B. sorokiniana. These results indicate that B. velezensis HeN-7 is a promising candidate as a biological control agent against Bipolaris sorokiniana infection.
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Affiliation(s)
- Xiaojie Lin
- Zhengzhou Key Laboratory of Functional Molecules for Biomedical Research, Henan University of Technology, No. 100 Lianhua Street, Zhengzhou, 450001, Henan, People's Republic of China
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Jianwei Wang
- Key Laboratory of Eco-Environment and Tobacco Leaf Quality, Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, 450001, Henan, People's Republic of China
| | - Zhipeng Hou
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Shiming Ren
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Wenxiu Wang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Yanhui Yang
- Zhengzhou Key Laboratory of Functional Molecules for Biomedical Research, Henan University of Technology, No. 100 Lianhua Street, Zhengzhou, 450001, Henan, People's Republic of China
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China
| | - Yanjie Yi
- Zhengzhou Key Laboratory of Functional Molecules for Biomedical Research, Henan University of Technology, No. 100 Lianhua Street, Zhengzhou, 450001, Henan, People's Republic of China.
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China.
| | - Yanling Zhang
- Key Laboratory of Eco-Environment and Tobacco Leaf Quality, Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, 450001, Henan, People's Republic of China.
| | - Ruifang Li
- Zhengzhou Key Laboratory of Functional Molecules for Biomedical Research, Henan University of Technology, No. 100 Lianhua Street, Zhengzhou, 450001, Henan, People's Republic of China.
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, People's Republic of China.
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Dehbi I, Achemrk O, Ezzouggari R, El Jarroudi M, Mokrini F, Legrifi I, Belabess Z, Laasli SE, Mazouz H, Lahlali R. Beneficial Microorganisms as Bioprotectants against Foliar Diseases of Cereals: A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:4162. [PMID: 38140489 PMCID: PMC10747484 DOI: 10.3390/plants12244162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023]
Abstract
Cereal production plays a major role in both animal and human diets throughout the world. However, cereal crops are vulnerable to attacks by fungal pathogens on the foliage, disrupting their biological cycle and photosynthesis, which can reduce yields by 15-20% or even 60%. Consumers are concerned about the excessive use of synthetic pesticides given their harmful effects on human health and the environment. As a result, the search for alternative solutions to protect crops has attracted the interest of scientists around the world. Among these solutions, biological control using beneficial microorganisms has taken on considerable importance, and several biological control agents (BCAs) have been studied, including species belonging to the genera Bacillus, Pseudomonas, Streptomyces, Trichoderma, Cladosporium, and Epicoccum, most of which include plants of growth-promoting rhizobacteria (PGPRs). Bacillus has proved to be a broad-spectrum agent against these leaf cereal diseases. Interaction between plant and beneficial agents occurs as direct mycoparasitism or hyperparasitism by a mixed pathway via the secretion of lytic enzymes, growth enzymes, and antibiotics, or by an indirect interaction involving competition for nutrients or space and the induction of host resistance (systemic acquired resistance (SAR) or induced systemic resistance (ISR) pathway). We mainly demonstrate the role of BCAs in the defense against fungal diseases of cereal leaves. To enhance a solution-based crop protection approach, it is also important to understand the mechanism of action of BCAs/molecules/plants. Research in the field of preventing cereal diseases is still ongoing.
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Affiliation(s)
- Ilham Dehbi
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
- Laboratory of Plant Biotechnology and Molecular Biology, Faculty of Sciences, Moulay Ismail University, BP 11201, Zitoune, Meknes 50000, Morocco;
| | - Oussama Achemrk
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
| | - Rachid Ezzouggari
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
- Laboratory of Biotechnology, Conservation, and Valorization of Natural Resources (LBCVNR), Faculty of Sciences Dhar El Mehraz, Sidi Mohamed Ben Abdallah University, Fez 30000, Morocco
| | - Moussa El Jarroudi
- Department of Environmental Sciences and Management, SPHERES Research Unit, University of Liège, 6700 Arlon, Belgium;
| | - Fouad Mokrini
- Biotechnology Unit, Regional Center of Agricultural Research, INRA–Morocco, Rabat 10080, Morocco;
| | - Ikram Legrifi
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
| | - Zineb Belabess
- Plant Protection Laboratory, Regional Center of Agricultural Research of Meknes, National Institute of Agricultural Research, Km 13, Route Haj Kaddour, BP 578, Meknes 50001, Morocco;
| | - Salah-Eddine Laasli
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
| | - Hamid Mazouz
- Laboratory of Plant Biotechnology and Molecular Biology, Faculty of Sciences, Moulay Ismail University, BP 11201, Zitoune, Meknes 50000, Morocco;
| | - Rachid Lahlali
- Phytopathology Unit, Department of Plant Protection, Ecole National of Agriculture Meknes, Km10, Rte Haj Kaddour, BP S/40, Meknes 50001, Morocco; (I.D.); (O.A.); (R.E.); (I.L.); (S.-E.L.)
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Zelaya-Molina LX, Guerra-Camacho JE, Ortiz-Alvarez JM, Vigueras-Cortés JM, Villa-Tanaca L, Hernández-Rodríguez C. Plant growth-promoting and heavy metal-resistant Priestia and Bacillus strains associated with pioneer plants from mine tailings. Arch Microbiol 2023; 205:318. [PMID: 37615783 DOI: 10.1007/s00203-023-03650-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/26/2023] [Accepted: 08/06/2023] [Indexed: 08/25/2023]
Abstract
Open mine tailings dams are extreme artificial environments containing sizeable potentially toxic elements (PTEs), including heavy metals (HMs), transition metals, and metalloids. Furthermore, these tailings have nutritional deficiencies, including assimilable phosphorus sources, organic carbon, and combined nitrogen, preventing plant colonization. Bacteria, that colonize these environments, have mechanisms to tolerate the selective pressures of PTEs. In this work, several Priestia megaterium (formerly Bacillus megaterium), Bacillus mojavensis, and Bacillus subtilis strains were isolated from bulk tailings, anthills, rhizosphere, and endosphere of pioneer plants from abandoned mine tailings in Zacatecas, Mexico. Bacillus spp. tolerated moderate HMs concentrations, produced siderophores and indole-3-acetic acid (IAA), solubilized phosphates, and reduced acetylene in the presence of HMs. The strains harbored different PIB-type ATPase genes encoding for efflux pumps and Cation Diffusion Facilitator (CDF) genes. Moreover, nifH and nifD nitrogenase genes were detected in P. megaterium and B. mojavensis genomic DNA. They showed similarity with sequences of the beta-Proteobacteria species, which may represent likely horizontal transfer events. These Bacillus species precede the colonization of mine tailings by plants. Their phenotypic and genotypic features could be essential in the natural recovery of the sites by reducing the oxidative stress of HMs, fixing nitrogen, solubilizing phosphate, and accumulating organic carbon. These traits of the strains reflect the adaptations of Bacillus species to the mine tailings environment and could contribute to the success of phytoremediation efforts.
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Affiliation(s)
- Lily X Zelaya-Molina
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N. Col. Sto. Tomás, C.P. 11340, Ciudad de México, México
- Centro Nacional de Recursos Genéticos-INIFAP, Boulevard de La Biodiversidad 400, Rancho Las Cruces, C.P. 47600, Tepatitlán de Morelos, Jalisco, México
| | - Jairo E Guerra-Camacho
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N. Col. Sto. Tomás, C.P. 11340, Ciudad de México, México
| | - Jossue M Ortiz-Alvarez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N. Col. Sto. Tomás, C.P. 11340, Ciudad de México, México
- Programa "Investigadoras E Investigadores Por México". Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCyT), Av. de los Insurgentes Sur 1582, Crédito Constructor, Benito Juárez, C.P. 03940, Ciudad de México, México
| | - Juan M Vigueras-Cortés
- Laboratorio de Prototipos de Agua, Centro Interdisciplinario de Investigación Para El Desarrollo Integral Regional, IPN CIIDIR Durango, Sigma 119, Fracc. 20 de Noviembre II, C.P. 34220, Durango, Durango, México
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N. Col. Sto. Tomás, C.P. 11340, Ciudad de México, México
| | - César Hernández-Rodríguez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prol. de Carpio y Plan de Ayala S/N. Col. Sto. Tomás, C.P. 11340, Ciudad de México, México.
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Zhao Y, Mao W, Tang W, Soares MA, Li H. Wild Rosa Endophyte M7SB41-Mediated Host Plant's Powdery Mildew Resistance. J Fungi (Basel) 2023; 9:620. [PMID: 37367556 DOI: 10.3390/jof9060620] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/20/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023] Open
Abstract
Our previous studies indicated that endophyte M7SB41 (Seimatosporium sp.) can significantly enhance host plants powdery mildew (PM) resistance. To recover the mechanisms, differentially expressed genes (DEGs) were compared between E+ (endophte-inoculated) and E- (endophyte-free) plants by transcriptomics. A total of 4094, 1200 and 2319 DEGs between E+ and E- were identified at 0, 24, and 72 h after plants had been infected with PM pathogen Golovinomyces cichoracearum, respectively. Gene expression pattern analysis displayed a considerable difference and temporality in response to PM stress between the two groups. Transcriptional profiling analysis revealed that M7SB41 induced plant resistance to PM through Ca2+ signaling, salicylic acid (SA) signaling, and the phenylpropanoid biosynthesis pathway. In particular, we investigated the role and the timing of the SA and jasmonic acid (JA)-regulated defensive pathways. Both transcriptomes and pot experiments showed that SA-signaling may play a prominent role in PM resistance conferred by M7SB41. Additionally, the colonization of M7SB41 could effectively increase the activities and the expression of defense-related enzymes under PM pathogen stress. Meanwhile, our study revealed reliable candidate genes from TGA (TGACG motif-binding factor), WRKY, and pathogenesis-related genes related to M7SB41-mediate resistance. These findings offer a novel insight into the mechanisms of endophytes in activating plant defense responses.
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Affiliation(s)
- Yi Zhao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Wenqin Mao
- Life Science and Technology & Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China
| | - Wenting Tang
- Life Science and Technology & Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China
| | - Marcos Antônio Soares
- Department of Botany and Ecology, Federal University of Mato Grosso, Cuiabá 78060-900, Brazil
| | - Haiyan Li
- Life Science and Technology & Medical Faculty, Kunming University of Science and Technology, Kunming 650500, China
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