1
|
Shanmugaraj C, Kamil D, Parimalan R, Singh PK, Shashank PR, Iquebal MA, Hussain Z, Das A, Gogoi R, Nishmitha K. Deciphering the defense response in tomato against Sclerotium rolfsii by Trichoderma asperellum strain A10 through gene expression analysis. 3 Biotech 2024; 14:210. [PMID: 39188534 PMCID: PMC11344752 DOI: 10.1007/s13205-024-04040-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 07/30/2024] [Indexed: 08/28/2024] Open
Abstract
Biological control agents are preferred over chemicals for managing plant diseases, with Trichoderma species being particularly effective against soil-borne pathogens. This study examines the use of a highly antagonistic strain, Trichoderma asperellum A10, and a virulent strain, Sclerotium rolfsii Sr38, identified and confirmed through ITS, β-tubulin (T. asperellum), TEF 1α, and RPB2 (S. rolfsii) sequences. In vitro and in planta experiments compared the antagonistic potential of A10 with other antagonistic fungi and fungicides against S. rolfsii. A10 achieved 94.66% inhibition of S. rolfsii in dual culture assays. In greenhouse trials with tomato variety Pusa Ruby, A10 showed significant pre- and post-inoculation effectiveness, with disease inhibition of 86.17 and 80.60%, respectively, outperforming T. harzianum, Propiconazole, and Carbendazim. Additionally, microbial priming with A10 was explored to enhance plant defense responses. Pre-treatment of tomato plants with T. asperellum A10 led to significant upregulation of several defense-related genes, including PR1, PR2, PR3, PR5, PR12, thioredoxin peroxidase, catalase, polyphenol oxidase, phenylalanine ammonia lyase, isochorismate synthase, laccase, prosystemin, multicystatin, WRKY31, MYC2, lipoxygenase A, lipoxygenase C, proteinase inhibitor I, proteinase inhibitor II, and ethylene response 1 associated with various signaling pathways such as salicylic acid (SA)-mediated and jasmonic acid/ethylene (JA/ET)-mediated responses. This upregulation was particularly evident at 48 h post-inoculation in A10-primed plants challenged with S. rolfsii, inducing resistance against collar rot disease. This study underscores the effectiveness of T. asperellum A10 in controlling collar rot and highlights its potential for inducing resistance in plants through microbial priming, providing valuable insights into sustainable disease management strategies. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-04040-4.
Collapse
Affiliation(s)
- C. Shanmugaraj
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Deeba Kamil
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - R. Parimalan
- Division of Genomic Resources, National Bureau of Plant Genetic Resources, New Delhi, 110012 India
| | - Praveen Kumar Singh
- Division of Centre for Protected Cultivation Technology (CPCT), ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - P. R. Shashank
- Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - M. A. Iquebal
- Center for Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, 110012 India
| | - Zakir Hussain
- Division of Vegetable Science, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Amrita Das
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Robin Gogoi
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - K. Nishmitha
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| |
Collapse
|
2
|
Hu X, Shi H, Zhang Z, Bai C. Antifungal effects of volatile organic compounds produced by Trichoderma hamatum against Neocosmospora solani. Lett Appl Microbiol 2024; 77:ovae063. [PMID: 38942473 DOI: 10.1093/lambio/ovae063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 04/28/2024] [Accepted: 06/27/2024] [Indexed: 06/30/2024]
Abstract
Neocosmospora solani causes Fusarium wilt disease and root rot, which are serious problems worldwide. To determine the growth inhibition of Neocosmospora solani by Trichoderma hamatum volatile organic compounds (VOCs), the major chemical components of Trichoderma hamatum VOCs and the differences in their contents at different times were analysed, and the activity of these components was evaluated. The antifungal activity of Trichoderma hamatum was measured by a screening test, as Trichoderma hamatum exhibited strong antagonism against Neocosmospora solani in vitro. The double plate technique was used to verify the activity of Trichoderma hamatum VOCs, and the inhibition rate was 63.77%. Neocosmospora solani mycelia were uneven and expanded, the contents of the cells leaked, and the mycelia shrank and presented a diaphragm in the hyphae upon Trichoderma hamatum VOCs treatment. Trichoderma hamatum VOCs and their contents at different times were analysed by using gas chromatography-mass spectrometry. 6-Pentyl-2H-pyran-2-one clearly presented in greater amounts than the other components on day 3, 4, 5, and 6. VOCs from Trichoderma hamatum exhibited evident effects on the percentage of healthy fruit after day 3. Moreover, Trichoderma hamatum can improve the biological control of diseases caused by soilborne pathogens, and can be applied in biocontrol fields.
Collapse
Affiliation(s)
- Xian Hu
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Science and Technology, Hubei Engineering University, Xiaogan 432000, P.R. China
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Hongan Shi
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Science and Technology, Hubei Engineering University, Xiaogan 432000, P.R. China
| | - Zhilin Zhang
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Science and Technology, Hubei Engineering University, Xiaogan 432000, P.R. China
| | - Cuihua Bai
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, P.R. China
| |
Collapse
|
3
|
Han J, Dong Z, Ji W, Lv W, Luo M, Fu B. From predator to protector: Myxococcus fulvus WCH05 emerges as a potent biocontrol agent for fire blight. Front Microbiol 2024; 15:1378288. [PMID: 38650871 PMCID: PMC11033317 DOI: 10.3389/fmicb.2024.1378288] [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: 01/29/2024] [Accepted: 03/25/2024] [Indexed: 04/25/2024] Open
Abstract
Fire blight, caused by the Gram-negative bacterium Erwinia amylovora, poses a substantial threat to pome fruit production worldwide. Despite existing control strategies, a pressing need remains for sustainable and environmentally friendly fire blight management. Myxobacteria, renowned for their predatory behavior and potent enzymes, emerge as a groundbreaking biocontrol approach with significant potential. Here, we report the biocontrol potential of a novel Myxococcus fulvus WCH05, against E. amylovora. Using various in vitro and planta assays, we demonstrated the multifaceted biocontrol abilities of strain WCH05. In plate predation assays, strain WCH05 exhibited not only strong predation against E. amylovora but also broad-spectrum activities against other plant pathogenic bacteria. Pre-treatment with strain WCH05 significantly decreased pear blossom blight incidence in detached inflorescence assays, achieving a controlled efficacy of 76.02% that rivaled the antibiotic streptomycin (79.79%). In greenhouse trials, strain WCH05 effectively reduced the wilting rate and disease index in young pear seedlings, exhibiting both protective (73.68%) and curative (68.66%) control. Further investigation revealed that the biocontrol activity of strain WCH05 relies on both direct contact and extracellular enzyme secretion. While cell extracts lacked inhibitory activity, ammonium sulfate-precipitated secreted proteins displayed potent lytic activity against E. amylovora. Substrate spectrum analysis identified peptidases, lipases, and glycosidases among the secreted enzymes, suggesting their potential roles in pathogen degradation and biocontrol efficacy. This study presents the first evidence of Myxococcus fulvus WCH05 as a biocontrol agent against fire blight. Its potent predatory abilities and enzymatic arsenal highlight its potential for sustainable disease management in pome fruit production. Future research will focus on identifying and characterizing specific lytic enzymes and optimizing strain WCH05 application strategies for field efficacy.
Collapse
Affiliation(s)
- Jian Han
- Department of Plant Pathology, College of Agronomy, Xinjiang Agriculture University/Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of Xinjiang Uygur Autonomous Region, Urumqi, China
- Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North-western Desert Oasis (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Urumqi, China
| | - Zhiming Dong
- Department of Plant Pathology, College of Agronomy, Xinjiang Agriculture University/Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of Xinjiang Uygur Autonomous Region, Urumqi, China
- Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North-western Desert Oasis (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Urumqi, China
| | - Wenbo Ji
- Department of Plant Pathology, College of Agronomy, Xinjiang Agriculture University/Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of Xinjiang Uygur Autonomous Region, Urumqi, China
- Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North-western Desert Oasis (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Urumqi, China
| | - Wen Lv
- Department of Plant Pathology, College of Agronomy, Xinjiang Agriculture University/Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of Xinjiang Uygur Autonomous Region, Urumqi, China
- Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North-western Desert Oasis (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Urumqi, China
| | - Ming Luo
- Department of Plant Pathology, College of Agronomy, Xinjiang Agriculture University/Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of Xinjiang Uygur Autonomous Region, Urumqi, China
- Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North-western Desert Oasis (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Urumqi, China
| | - Benzhong Fu
- Department of Plant Pathology, College of Agronomy, Xinjiang Agriculture University/Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of Xinjiang Uygur Autonomous Region, Urumqi, China
- Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North-western Desert Oasis (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Urumqi, China
| |
Collapse
|
4
|
Modrzewska M, Popowski D, Błaszczyk L, Stępień Ł, Urbaniak M, Bryła M, Cramer B, Humpf HU, Twarużek M. Antagonistic properties against Fusarium sporotrichioides and glycosylation of HT-2 and T-2 toxins by selected Trichoderma strains. Sci Rep 2024; 14:5865. [PMID: 38467671 PMCID: PMC10928170 DOI: 10.1038/s41598-024-55920-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/28/2024] [Indexed: 03/13/2024] Open
Abstract
The present study assessed the ability of Trichoderma to combat F. sporotrichioides, focusing on their antagonistic properties. Tests showed that Trichoderma effectively inhibited F. sporotrichioides mycelial growth, particularly with T. atroviride strains. In co-cultures on rice grains, Trichoderma almost completely reduced the biosynthesis of T-2 and HT-2 toxins by Fusarium. T-2 toxin-α-glucoside (T-2-3α-G), HT-2 toxin-α-glucoside (HT-2-3α-G), and HT-2 toxin-β-glucoside (HT-2-3β-G) were observed in the common culture medium, while these substances were not present in the control medium. The study also revealed unique metabolites and varying metabolomic profiles in joint cultures of Trichoderma and Fusarium, suggesting complex interactions. This research offers insights into the processes of biocontrol by Trichoderma, highlighting its potential as a sustainable solution for managing cereal plant pathogens and ensuring food safety.
Collapse
Affiliation(s)
- Marta Modrzewska
- Department of Food Safety and Chemical Analysis, Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland
| | - Dominik Popowski
- Department of Food Safety and Chemical Analysis, Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland
| | - Lidia Błaszczyk
- Plant Microbiomics Team, Institute of Plant Genetics, Polish Academy of Sciences, 60-479, Poznan, Poland
| | - Łukasz Stępień
- Plant-Pathogen Interaction Team, Institute of Plant Genetics, Polish Academy of Sciences, 60-479, Poznan, Poland
| | - Monika Urbaniak
- Plant-Pathogen Interaction Team, Institute of Plant Genetics, Polish Academy of Sciences, 60-479, Poznan, Poland
| | - Marcin Bryła
- Department of Food Safety and Chemical Analysis, Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland.
| | - Benedikt Cramer
- Institute of Food Chemistry, University of Münster, Corrensstr. 45, 48149, Münster, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, University of Münster, Corrensstr. 45, 48149, Münster, Germany
| | - Magdalena Twarużek
- Department of Physiology and Toxicology, Faculty of Natural Sciences, Institute of Experimental Biology, Kazimierz Wielki University, Chodkiewicza 30, 85-064, Bydgoszcz, Poland
| |
Collapse
|
5
|
Tang Z, Zhu J, Song Q, Daly P, Kong L, He L, Li A, Lou J, Wang Z, Zhang L, Min L. Identification and pathogenicity of Fusarium spp. associated with tea wilt in Zhejiang Province, China. BMC Microbiol 2024; 24:38. [PMID: 38281024 PMCID: PMC10821546 DOI: 10.1186/s12866-023-03174-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/26/2023] [Indexed: 01/29/2024] Open
Abstract
BACKGROUND Tea is one of the most widely consumed beverages in the world, with significant economic and cultural value. However, tea production faces many challenges due to various biotic and abiotic stresses, among which fungal diseases are particularly devastating. RESULTS To understand the identity and pathogenicity of isolates recovered from tea plants with symptoms of wilt, phylogenetic analyses and pathogenicity assays were conducted. Isolates were characterized to the species level by sequencing the ITS, tef-1α, tub2 and rpb2 sequences and morphology. Four Fusarium species were identified: Fusarium fujikuroi, Fusarium solani, Fusarium oxysporum, and Fusarium concentricum. The pathogenicity of the Fusarium isolates was evaluated on 1-year-old tea plants, whereby F. fujikuroi OS3 and OS4 strains were found to be the most virulent on tea. CONCLUSIONS To the best of our knowledge, this is the first report of tea rot caused by F. fujikuroi in the world. This provides the foundation for the identification and control of wilt disease in tea plants.
Collapse
Affiliation(s)
- Zhaoyang Tang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Jing Zhu
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Qiujin Song
- Zhejiang Zhongyi Testing Institute Co., Ltd., Huzhou, 313000, China
| | - Paul Daly
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Liya Kong
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Luqian He
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Agen Li
- Yuhang Agro-Ecological Environment & Crop Protection Service Station, Hangzhou, 310000, China
| | - Jun Lou
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Zhanqi Wang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Liqin Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China.
| | - Lijing Min
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China.
| |
Collapse
|
6
|
Sallam NMA, AbdElfatah HAS, Khalil Bagy HMM, Elfarash A, Abo-Elyousr KAM, Sikora EJ, Sallam A. Exploring the mechanisms of endophytic bacteria for suppressing early blight disease in tomato ( Solanum lycopersicum L.). Front Microbiol 2023; 14:1184343. [PMID: 37808317 PMCID: PMC10551630 DOI: 10.3389/fmicb.2023.1184343] [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: 03/11/2023] [Accepted: 08/24/2023] [Indexed: 10/10/2023] Open
Abstract
Controlling early blight of tomatoes using endophytic bacteria is an eco-friendly and sustainable approach to manage this common fungal disease caused by Alternaria solani, Alternaria alternata, and Curvularia lunata. Endophytic bacteria are microorganisms that live inside plant tissues without causing harm and can help protect the host plant from pathogens. In this work, twenty endophytic bacterial isolates from tomato healthy plants were tested against pathogenic fungal isolates that caused early blight disease in vitro. Out of the 20 tested isolates, three (B4, B7, and B17) were considered effective isolates against the growth of fungal pathogens. The three isolates were recognized as Enterobacter cloacae HS-6 (B4), Pseudomonas gessardii HS-5 (B 7), and Pseudomonas mediterranea HS-4 (B17) using 16s-rDNA sequencing. Different concentrations of bacterial cultural diltrates at 20, 40, and 60% were tested for their antagonistic effects on the development of pathogenic fungi in vitro. The lowest dry weights of pathogenic isolates in all bacterial culture filtrates were discovered at 60%. In all culture filtrates, phenolic compounds showed the largest peak area. Under greenhouse conditions, the least disease severity of tomato early blight was found for E. cloacae and its culture filtrate compared to other treatments. Real-time PCR was used to examine the expression pattern of the defense response gene β-1.3 glucanase gene in infected tomato plants with pathogenic fungi (control) as well as its relations with efficient biocontrol agent (E. cloacae). The expression of the gene increased substantially and significantly after three days from the inoculation-infected plants with C. lunata and E. cloacae while it reached the maximum after five days from the inoculation with A. alternata, A. solani and E. cloacae. Our study concluded that the endophytic bacterial isolate E. cloacae can be considered a promising biocontrol agent for preventing tomato early blight.
Collapse
Affiliation(s)
- Nashwa M. A. Sallam
- Department of Plant Pathology, Faculty of Agriculture, Assiut University, Assiut, Egypt
| | | | | | - Ameer Elfarash
- Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt
| | - Kamal A. M. Abo-Elyousr
- Department of Plant Pathology, Faculty of Agriculture, Assiut University, Assiut, Egypt
- Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Edward J. Sikora
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, United States
| | - Ahmed Sallam
- Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt
- Department Genebank, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
| |
Collapse
|
7
|
Liu S, Yang G, Wu F, Ge Y, Liu F, Pu C, Wang Z, Shen Y, Zhou X, Luo Y, Li F, Zhang Y, Chen M, Huang L. Traditional Chinese medicine residues promote the growth and quality of Salvia miltiorrhiza Bunge by improving soil health under continuous monoculture. FRONTIERS IN PLANT SCIENCE 2023; 14:1112382. [PMID: 37351215 PMCID: PMC10284172 DOI: 10.3389/fpls.2023.1112382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 05/12/2023] [Indexed: 06/24/2023]
Abstract
Continuous monoculture of crops has resulted in reduced yields and quality, as well as soil deterioration. Although traditional Chinese medicine residues (TCMRs) are known to promote plant growth and soil health, few studies have investigated their effectiveness in continuous monoculture soils. Here, we studied the impact of chemical fertilizers (CF) and four TCMRs with antibacterial activities on the growth of S. miltiorrhiza (a widely used medicinal plant in China), accumulation of active ingredients in plants, and soil health under continuous monoculture conditions. Compared with no fertilizer (CK) and CF, fermented Sophora flavescens radix residue (SFRf) and fermented and unfermented Moutan cortex residue (MCRf and MCRu, respectively) resulted in a reduction of the disease index of root rot, while CF did not. The CF and four TCMR treatments increased the accumulation of nitrogen (N) (42.8-124.6% and 17.0-101.7%), phosphorous (P) (19.8-74.7% and 8.3-27.4%), and potassium (K) (104.1-212.0% and 9.3-51.8%) in shoots and roots compared to CK. The differences in nutrient accumulation between the CF and TCMR treatments were statistically insignificant, excepted for the N accumulation in the roots. All fertilization treatments increased plant biomass compared to CK, with increases of 25.57-89.86% and 2.62-35.28% in shoots and roots, respectively. The SFRf treatment exhibited the most significant enhancement in both shoot and root biomass. CF significantly reduced the accumulation of seven active ingredients in roots by 23.90-78.95% compared to CK, whereas each TCMR increased accumulation of certain active ingredients. The TCMR treatments effectively improved the health of deteriorated soil by enhancing soil physicochemical properties, restoring the balance of the microbial community, recruiting beneficial bacteria, and reducing the relative abundance of the pathogen Fusarium. The SFRf treatment exhibited superior performance in improving soil health than other treatments. Overall, the TCMRs outperformed CF in restoring soil health and promoting the yield and quality of S. miltiorrhiza. These findings offer guidance for improving the health of continuous cropping soil and recycling TCMRs.
Collapse
Affiliation(s)
- Sha Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Guang Yang
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Faming Wu
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Yang Ge
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fusong Liu
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Chunjuan Pu
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zihan Wang
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ye Shen
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiuteng Zhou
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuzhi Luo
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fengsheng Li
- Cultivation Base Department, Laiwu Purple Light Ecological Park Co., Ltd., Jinan, Shandong, China
| | - You Zhang
- Cultivation Base Department, Laiwu Purple Light Ecological Park Co., Ltd., Jinan, Shandong, China
| | - Meilan Chen
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Luqi Huang
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
8
|
Saadaoui M, Faize M, Bonhomme L, Benyoussef NO, Kharrat M, Chaar H, Label P, Venisse JS. Assessment of Tunisian Trichoderma Isolates on Wheat Seed Germination, Seedling Growth and Fusarium Seedling Blight Suppression. Microorganisms 2023; 11:1512. [PMID: 37375014 DOI: 10.3390/microorganisms11061512] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/25/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Beneficial microorganisms, including members of the Trichoderma genus, are known for their ability to promote plant growth and disease resistance, as well as being alternatives to synthetic inputs in agriculture. In this study, 111 Trichoderma strains were isolated from the rhizospheric soil of Florence Aurore, an ancient wheat variety that was cultivated in an organic farming system in Tunisia. A preliminary ITS analysis allowed us to cluster these 111 isolates into three main groups, T. harzianum (74 isolates), T. lixii (16 isolates) and T. sp. (21 isolates), represented by six different species. Their multi-locus analysis (tef1, translation elongation factor 1; rpb2, RNA polymerase B) identified three T. afroharzianum, one T. lixii, one T. atrobrunneum and one T. lentinulae species. These six new strains were selected to determine their suitability as plant growth promoters (PGP) and biocontrol agents (BCA) against Fusarium seedling blight disease (FSB) in wheat caused by Fusarium culmorum. All of the strains exhibited PGP abilities correlated to ammonia and indole-like compound production. In terms of biocontrol activity, all of the strains inhibited the development of F. culmorum in vitro, which is linked to the production of lytic enzymes, as well as diffusible and volatile organic compounds. An in planta assay was carried out on the seeds of a Tunisian modern wheat variety (Khiar) by coating them with Trichoderma. A significant increase in biomass was observed, which is associated with increased chlorophyll and nitrogen. An FSB bioprotective effect was confirmed for all strains (with Th01 being the most effective) by suppressing morbid symptoms in germinated seeds and seedlings, as well as by limiting F. culmorum aggressiveness on overall plant growth. Plant transcriptome analysis revealed that the isolates triggered several SA- and JA-dependent defense-encoding genes involved in F. culmorum resistance in the roots and leaves of three-week-old seedlings. This finding makes these strains very promising in promoting growth and controlling FSB disease in modern wheat varieties.
Collapse
Affiliation(s)
- Mouadh Saadaoui
- Université Clermont Auvergne, INRAE, PIAF, 63000 Clermont-Ferrand, France
- Université de Tunis El Manar, Campus Universitaire Farhat Hached, B.P. n° 94-ROMMANA, Tunis 1068, Tunisia
- Field Crops Laboratory, National Institute for Agricultural Research of Tunisia (INRAT), Hedi Karray Street, El Menzah, Ariana 1004, Tunisia
| | - Mohamed Faize
- Laboratory of Plant Biotechnology, Ecology and Ecosystem Valorization URL-CNRST 10, Faculty of Sciences, University Chouaib Doukkali, El Jadida 24000, Morocco
| | - Ludovic Bonhomme
- UMR 1095 Génétique Diversité Ecophysiologie des Céréales, INRAE, Université Clermont Auvergne, 63000 Clermont-Ferrand, France
| | - Noura Omri Benyoussef
- Field Crops Laboratory, National Institute for Agricultural Research of Tunisia (INRAT), Hedi Karray Street, El Menzah, Ariana 1004, Tunisia
- National Institute of Agronomy of Tunisia (INAT), Tunis 1082, Tunisia
| | - Mohamed Kharrat
- Field Crops Laboratory, National Institute for Agricultural Research of Tunisia (INRAT), Hedi Karray Street, El Menzah, Ariana 1004, Tunisia
| | - Hatem Chaar
- Field Crops Laboratory, National Institute for Agricultural Research of Tunisia (INRAT), Hedi Karray Street, El Menzah, Ariana 1004, Tunisia
- National Institute of Agronomy of Tunisia (INAT), Tunis 1082, Tunisia
| | - Philippe Label
- Université Clermont Auvergne, INRAE, PIAF, 63000 Clermont-Ferrand, France
| | | |
Collapse
|
9
|
Sehim AE, Hewedy OA, Altammar KA, Alhumaidi MS, Abd Elghaffar RY. Trichoderma asperellum empowers tomato plants and suppresses Fusarium oxysporum through priming responses. Front Microbiol 2023; 14:1140378. [PMID: 36998401 PMCID: PMC10043483 DOI: 10.3389/fmicb.2023.1140378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/21/2023] [Indexed: 03/15/2023] Open
Abstract
Plant-associated microbes play crucial roles in plant health and promote growth under stress. Tomato (Solanum lycopersicum) is one of the strategic crops grown throughout Egypt and is a widely grown vegetable worldwide. However, plant disease severely affects tomato production. The post-harvest disease (Fusarium wilt disease) affects food security globally, especially in the tomato fields. Thus, an alternative effective and economical biological treatment to the disease was recently established using Trichoderma asperellum. However, the role of rhizosphere microbiota in the resistance of tomato plants against soil-borne Fusarium wilt disease (FWD) remains unclear. In the current study, a dual culture assay of T. asperellum against various phytopathogens (e.g., Fusarium oxysporum, F. solani, Alternaria alternata, Rhizoctonia solani, and F. graminerarum) was performed in vitro. Interestingly, T. asperellum exhibited the highest mycelial inhibition rate (53.24%) against F. oxysporum. In addition, 30% free cell filtrate of T. asperellum inhibited F. oxysporum by 59.39%. Various underlying mechanisms were studied to explore the antifungal activity against F. oxysporum, such as chitinase activity, analysis of bioactive compounds by gas chromatography–mass spectrometry (GC–MS), and assessment of fungal secondary metabolites against F. oxysporum mycotoxins in tomato fruits. Additionally, the plant growth-promoting traits of T. asperellum were studied (e.g., IAA production, Phosphate solubilization), and the impact on tomato seeds germination. Scanning electron microscopy, plant root sections, and confocal microscopy were used to show the mobility of the fungal endophyte activity to promote tomato root growth compared with untreated tomato root. T. asperellum enhanced the growth of tomato seeds and controlled the wilt disease caused by the phytopathogen F. oxysporum by enhancing the number of leaves as well as shoot and root length (cm) and fresh and dry weights (g). Furthermore, Trichoderma extract protects tomato fruits from post-harvest infection by F. oxysporum. Taking together, T. asperellum represents a safe and effective controlling agent against Fusarium infection of tomato plants.
Collapse
Affiliation(s)
- Amira E. Sehim
- Botany and Microbiology Department, Faculty of Science, Benha University, Benha, Egypt
| | - Omar A. Hewedy
- Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada
- Department of Genetics, Faculty of Agriculture, Menoufia University, Shebeen El-Kom, Egypt
- *Correspondence: Omar A. Hewedy,
| | - Khadijah A. Altammar
- Department of Biology, College of Science, University of Hafr Al Batin, Hafar Al Batin, Saudi Arabia
| | - Maryam S. Alhumaidi
- Department of Biology, College of Science, University of Hafr Al Batin, Hafar Al Batin, Saudi Arabia
| | | |
Collapse
|
10
|
Si B, Wang H, Bai J, Zhang Y, Cao Y. Evaluating the Utility of Simplicillium lanosoniveum, a Hyperparasitic Fungus of Puccinia graminis f. sp. tritici, as a Biological Control Agent against Wheat Stem Rust. Pathogens 2022; 12:pathogens12010022. [PMID: 36678370 PMCID: PMC9862854 DOI: 10.3390/pathogens12010022] [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: 11/18/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
Wheat stem rust is one of the wheat diseases caused by Puccinia graminis Pers. f. sp. tritici (Pgt). This disease has been responsible for major losses to wheat production worldwide. Currently used methods for controlling this disease include fungicides, the breeding of stem rust-resistant cultivars, and preventive agricultural measures. However, the excessive use of fungicides can have various deleterious effects on the environment. A hyperparasitic fungus with white mycelia and oval conidia, Simplicillium lanosoniveum, was isolated from the urediniospores of Pgt. When Pgt-infected wheat leaves were inoculation with isolates of S. lanosoniveum, it was found that S. lanosoniveum inoculation inhibited the production and germination of urediniospores, suggesting that S. lanosoniveum could inhibit the growth and spread of Pgt. Scanning electron microscopy revealed that S. lanosoniveum could inactivate the urediniospores by inducing structural damage. Overall, findings indicate that S. lanosoniveum might provide an effective biological agent for the control of Pgt.
Collapse
Affiliation(s)
- Binbin Si
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China
| | - Hui Wang
- College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China
| | - Jiaming Bai
- College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China
| | - Yuzhen Zhang
- College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China
| | - Yuanyin Cao
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- Correspondence: ; Tel.: +86-136-0400-0358
| |
Collapse
|
11
|
Pazarlar S, Madriz-Ordeñana K, Thordal-Christensen H. Bacillus cereus EC9 protects tomato against Fusarium wilt through JA/ET-activated immunity. FRONTIERS IN PLANT SCIENCE 2022; 13:1090947. [PMID: 36589090 PMCID: PMC9798288 DOI: 10.3389/fpls.2022.1090947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
The mechanisms of action and the limitations of effectiveness of natural biocontrol agents should be determined in order to convert them into end products that can be used in practice. Rhizosphere Bacillus spp. protect plants from various pathogens by displaying several modes of action. However, the ability of Bacillus spp. to control plant diseases depends on the interaction between the bacteria, host, and pathogen, and the environmental conditions. We found that soil drenching of tomato plants with the non-antifungal Bacillus cereus strain EC9 (EC9) enhances plant defense against Fusarium oxysporum f. sp. lycopersici (Fol). To study the involvement of plant defense-related phytohormones in the regulation of EC9-activated protection against Fol, we conducted plant bioassays in tomato genotypes impaired in salicylic acid (SA) accumulation, jasmonic acid (JA) biosynthesis, and ethylene (ET) production, and analyzed the transcript levels of pathways-related marker genes. Our results indicate that JA/ET-dependent signaling is required for EC9-mediated protection against Fol in tomato. We provide evidence that EC9 primes tomato plants for enhanced expression of proteinase inhibitor I (PI-I) and ethylene receptor4 (ETR4). Moreover, we demonstrated that EC9 induces callose deposition in tomato roots. Understanding the involvement of defense-related phytohormones in EC9-mediated defense against Fusarium wilt has increased our knowledge of interactions between non-antifungal plant defense-inducing rhizobacteria and plants.
Collapse
Affiliation(s)
- Sercan Pazarlar
- Department of Plant Protection, Faculty of Agriculture, Ege University, Izmir, Turkey
- Department of Plant and Environmental Sciences, Section for Plant and Soil Science, University of Copenhagen, Copenhagen, Denmark
| | - Kenneth Madriz-Ordeñana
- Department of Plant and Environmental Sciences, Section for Plant and Soil Science, University of Copenhagen, Copenhagen, Denmark
| | - Hans Thordal-Christensen
- Department of Plant and Environmental Sciences, Section for Plant and Soil Science, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
12
|
Trichoderma versus Fusarium-Inhibition of Pathogen Growth and Mycotoxin Biosynthesis. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238146. [PMID: 36500242 PMCID: PMC9735881 DOI: 10.3390/molecules27238146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
This study evaluated the ability of selected strains of Trichoderma viride, T. viridescens, and T. atroviride to inhibit mycelium growth and the biosynthesis of mycotoxins deoxynivalenol (DON), nivalenol (NIV), zearalenone (ZEN), α-(α-ZOL) and β-zearalenol (β-ZOL) by selected strains of Fusarium culmorum and F. cerealis. For this purpose, an in vitro experiment was carried out on solid substrates (PDA and rice). After 5 days of co-culture, it was found that all Trichoderma strains used in the experiment significantly inhibited the growth of Fusarium mycelium. Qualitative assessment of pathogen-antagonist interactions showed that Trichoderma colonized 75% to 100% of the medium surface (depending on the species and strain of the antagonist and the pathogen) and was also able to grow over the mycelium of the pathogen and sporulate. The rate of inhibition of Fusarium mycelium growth by Trichoderma ranged from approximately 24% to 66%. When Fusarium and Trichoderma were co-cultured on rice, Trichoderma strains were found to inhibit DON biosynthesis by about 73% to 98%, NIV by about 87% to 100%, and ZEN by about 12% to 100%, depending on the pathogen and antagonist strain. A glycosylated form of DON was detected in the co-culture of F. culmorum and Trichoderma, whereas it was absent in cultures of the pathogen alone, thus suggesting that Trichoderma is able to glycosylate DON. The results also suggest that a strain of T. viride is able to convert ZEN into its hydroxylated derivative, β-ZOL.
Collapse
|
13
|
Liu L, Xu Y, Cao H, Fan Y, Du K, Bu X, Gao D. Effects of Trichoderma harzianum biofertilizer on growth, yield, and quality of Bupleurum chinense. PLANT DIRECT 2022; 6:e461. [PMID: 36405510 PMCID: PMC9669496 DOI: 10.1002/pld3.461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 06/03/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
The use of chemical fertilizers and pesticides led to a decline in the quality and yield of Bupleurum chinense. The aim of this study was to determine the effects of Trichoderma harzianum biofertilizer on the growth, yield, and quality of radix bupleuri and microbial responses. The results showed that T. harzianum biofertilizer promoted the growth of B. chinense and increased the yield and quality of radix bupleuri. In addition, it increased the contents of NH4 +-N, NO3 --N, available K, and available P and increased the activities of sucrase and catalase in the rhizosphere soil. High-throughput analysis showed that the dominant bacteria in the rhizosphere were Proteobacteria (28%), Acidobacteria (23%), and Actinobacteria (17%), whereas the dominant fungi were Ascomycota (49%), Zygomycota (30%), and Basidiomycota (6%). After the application of T. harzianum biofertilizer, the abundance of Proteobacteria and Actinobacteria (relative to total bacteria) and Ascomycota and Basidiomycota (relative to total fungi) increased, but the relative abundance of Acidobacteria decreased. Canonical correlation analysis (CCA) showed that the relative abundance of Pseudarthrobacter, Streptomyces, Rhizobium, Nocardioides, Minimedusa, and Chaetomium were positively correlated with NO3 --N, NH4 +-N, available K, available P, sucrase, and catalase in microbial communities, whereas Aeromicrobium and Mortierella were positively correlated with soil organic matter and urease. These results suggest that T. harzianum biofertilizer could significantly improve the yield and quality of radix bupleuri by changing the structure of soil microbial flora and soil enzyme activity. Therefore, it could be recommended for commercial scale production of Bupleurum.
Collapse
Affiliation(s)
- Li Liu
- School of PharmacyShandong University of Traditional Chinese Medicine (TCM)JinanChina
| | - Yuansong Xu
- Department of Rehabilitation MedicineCentral District People Hospital of JinanJinanChina
| | - Hailu Cao
- Hengde Bencao (Beijing) Agricultural Technology Co., LTDBeijingChina
| | - Ya Fan
- School of PharmacyShandong University of Traditional Chinese Medicine (TCM)JinanChina
| | - Kan Du
- School of PharmacyShandong University of Traditional Chinese Medicine (TCM)JinanChina
| | - Xun Bu
- Research Center of BiotechnologyShandong Academy of Agricultural SciencesJinanChina
| | - Demin Gao
- School of PharmacyShandong University of Traditional Chinese Medicine (TCM)JinanChina
| |
Collapse
|
14
|
Du N, Guo H, Fu R, Dong X, Xue D, Piao F. Comparative Transcriptome Analysis and Genetic Methods Revealed the Biocontrol Mechanism of Paenibacilluspolymyxa NSY50 against Tomato Fusarium Wilt. Int J Mol Sci 2022; 23:ijms231810907. [PMID: 36142825 PMCID: PMC9501285 DOI: 10.3390/ijms231810907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Fusarium wilt caused by Fusarium oxysporum f. sp. lycopersici (Fol) is a common disease that affects tomatoes, which can cause the whole plant to wilt and seriously reduce the production of tomatoes in greenhouses. In this study, the morphological indexes, photosynthetic performance and incidence rate of NSY50 under Fol infection were evaluated. It was found that NSY50 could improve the growth of tomato seedlings and significantly reduce the incidence rate of Fusarium wilt. However, the molecular mechanism of NSY50 that induces resistance to Fusarium wilt is still unclear. We used transcriptomic methods to analyze NSY50-induced resistance to Fol in tomatoes. The results showed that plant defense related genes, such as PR and PAL, were highly expressed in tomato seedlings pretreated with NSY50. At the same time, photosynthetic efficiency, sucrose metabolism, alkaloid biosynthesis and terpene biosynthesis were significantly improved, which played a positive role in reducing the damage caused by Fol infection and enhancing the disease tolerance of seedlings. Through transgenic validation, we identified an important tomato NAC transcription factor, SlNAP1, which was preliminarily confirmed to be effective in relieving the detrimental symptoms induced by Fol. Our findings reveal that P. polymyxa NSY50 is an effective plant-growth-promoting rhizosphere bacterium and also a biocontrol agent of soil-borne diseases, which can significantly improve the resistance of tomato to Fusarium wilt.
Collapse
Affiliation(s)
- Nanshan Du
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
| | - Hui Guo
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
| | - Ruike Fu
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
| | - Xiaoxing Dong
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
| | - Dongqi Xue
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Henan Agricultural University, Zhengzhou 450002, China
- Correspondence: (D.X.); (F.P.); Tel.: +86-133-2382-6629 (D.X.)
| | - Fengzhi Piao
- College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
- Correspondence: (D.X.); (F.P.); Tel.: +86-133-2382-6629 (D.X.)
| |
Collapse
|
15
|
Rao Y, Zeng L, Jiang H, Mei L, Wang Y. Trichoderma atroviride LZ42 releases volatile organic compounds promoting plant growth and suppressing Fusarium wilt disease in tomato seedlings. BMC Microbiol 2022; 22:88. [PMID: 35382732 PMCID: PMC8981656 DOI: 10.1186/s12866-022-02511-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 03/30/2022] [Indexed: 11/17/2022] Open
Abstract
Background The promotion of plant growth and suppression of plant disease using beneficial microorganisms is considered an alternative to the application of chemical fertilizers or pesticides in the field. Results A coconut-scented antagonistic Trichoderma strain LZ42, previously isolated from Ganoderma lucidum-cultivated soil, was investigated for biostimulatory and biocontrol functions in tomato seedlings. Morphological and phylogenetic analyses suggested that strain LZ42 is closely related to T. atroviride. Tomato seedlings showed increased aerial and root dry weights in greenhouse trials after treatment with T. atroviride LZ42 formulated in talc, indicating the biostimulatory function of this fungus. T. atroviride LZ42 effectively suppressed Fusarium wilt disease in tomato seedlings, with an 82.69% control efficiency, which is similar to that of the carbendazim treatment. The volatile organic compounds (VOCs) emitted by T. atroviride LZ42 were found to affect the primary root growth direction and promote the root growth of tomato seedlings in root Y-tube olfactometer assays. The fungal VOCs from T. atroviride LZ42 were observed to significantly inhibit F. oxysporum in a sandwiched Petri dish assay. SPME–GC–MS analysis revealed several VOCs emitted by T. atroviride LZ42; the dominant compound was tentatively identified as 6-pentyl-2H-pyran-2-one (6-PP). The VOC 6-PP exhibited a stronger ability to influence the direction of the primary roots of tomato seedlings but not the length of the primary roots. The inhibitory effect of 6-PP on F. oxysporum was the highest among the tested pure VOCs, showing a 50% effective concentration (EC50) of 5.76 μL mL−1 headspace. Conclusions Trichoderma atroviride LZ42, which emits VOCs with multiple functions, is a promising agent for the biostimulation of vegetable plants and integrated management of Fusarium wilt disease. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-022-02511-3.
Collapse
Affiliation(s)
- Yuxin Rao
- College of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Linzhou Zeng
- College of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Hong Jiang
- College of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Li Mei
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China
| | - Yongjun Wang
- College of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China.
| |
Collapse
|
16
|
Impact of Fungi on Agriculture Production, Productivity, and Sustainability. Fungal Biol 2022. [DOI: 10.1007/978-981-16-8877-5_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
17
|
Nofal AM, El-Rahman MA, Abdelghany TM, Abd El-Mongy M. Mycoparasitic nature of Egyptian Trichoderma isolates and their impact on suppression Fusarium wilt of tomato. EGYPTIAN JOURNAL OF BIOLOGICAL PEST CONTROL 2021; 31:103. [DOI: 10.1186/s41938-021-00450-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 07/03/2021] [Indexed: 09/01/2023]
Abstract
Abstract
Background
Plant disease administration is difficult due to the soil-borne nature of the phytopathogens. Biological control of plant disease is a safe mode to avoid the problems related to fungal diseases that affect crops productivity.
Results
Twenty-three Trichoderma isolates were isolated from soil, surrounding healthy tomato roots from different regions in the Egyptian Governorate of Menoufia. Using a dual culture method to test the efficiency of Trichoderma isolates, the most effective isolate identified as Trichoderma atrovirde with percentage inhibition against Fusarium oxysporum f. sp. lycopersici (92.11%) and scanning electron microscope examination documented the mycoparasitic nature of T. atrovirde to F. oxysporum. Treatments with 10% filtrate T. atrovirde improved the growth aspects of tomato plants than the control plants or infected only, as well as the increase in phenol content (15.09 ug. g-1dry weight) and decreased disease incidence percentage (8%) than the plants infected only (60%).
Conclusions
This study clearly demonstrated that T. atrovirde had a significant inhibition against F. oxysporum. Greenhouse assays displayed the protective role of T. atrovirde inoculation directly against pathogen or indirectly related to the defense mechanism in the plant. So, this study recommends using T. atrovirde for biological control of wilt disease in tomato plants.
Collapse
|
18
|
Ren H, Wang H, Yu Z, Zhang S, Qi X, Sun L, Wang Z, Zhang M, Ahmed T, Li B. Effect of Two Kinds of Fertilizers on Growth and Rhizosphere Soil Properties of Bayberry with Decline Disease. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10112386. [PMID: 34834750 PMCID: PMC8624721 DOI: 10.3390/plants10112386] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 05/14/2023]
Abstract
Decline disease causes severe damage to bayberry. However, the cause of this disease remains unclear. Interestingly, our previous studies found that the disease severity is related with the level of soil fertilizer. This study aims to explore the effect and mechanism of compound fertilizer (CF) and bio-organic fertilizer (OF) in this disease by investigating the vegetative growth, fruit characters, soil property, rhizosphere microflora and metabolites. Results indicated that compared with the disease control, CF and OF exhibited differential effect in plant healthy and soil quality, together with the increase in relative abundance of Burkholderia and Mortierella, and the reduction in that of Rhizomicrobium and Acidibacter, Trichoderma, and Cladophialophora reduced. The relative abundance of Geminibasidium were increased by CF (251.79%) but reduced by OF (13.99%). In general, the composition of bacterial and fungal communities in rhizosphere soil was affected significantly at genus level by exchangeable calcium, available phosphorus, and exchangeable magnesium, while the former two variables had a greater influence in bacterial communities than fungal communities. Analysis of GC-MS metabonomics indicated that compared to the disease control, CF and OF significantly changed the contents of 31 and 45 metabolites, respectively, while both fertilizers changed C5-branched dibasic acid, galactose, and pyrimidine metabolic pathway. Furthermore, a significant correlation was observed at the phylum, order and genus levels between microbial groups and secondary metabolites of bayberry rhizosphere soil. In summary, the results provide a new way for rejuvenation of this diseased bayberry trees.
Collapse
Affiliation(s)
- Haiying Ren
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (Z.Y.); (S.Z.); (X.Q.); (L.S.)
| | - Hongyan Wang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (Z.Y.); (S.Z.); (X.Q.); (L.S.)
| | - Zheping Yu
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (Z.Y.); (S.Z.); (X.Q.); (L.S.)
| | - Shuwen Zhang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (Z.Y.); (S.Z.); (X.Q.); (L.S.)
| | - Xingjiang Qi
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (Z.Y.); (S.Z.); (X.Q.); (L.S.)
| | - Li Sun
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (Z.Y.); (S.Z.); (X.Q.); (L.S.)
| | - Zhenshuo Wang
- College of Plant Protection, China Agricultural University, Beijing 100193, China
- Correspondence: (Z.W.); (B.L.)
| | - Muchen Zhang
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.Z.); (T.A.)
| | - Temoor Ahmed
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.Z.); (T.A.)
| | - Bin Li
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.Z.); (T.A.)
- Correspondence: (Z.W.); (B.L.)
| |
Collapse
|
19
|
Ren H, Wang H, Qi X, Yu Z, Zheng X, Zhang S, Wang Z, Zhang M, Ahmed T, Li B. The Damage Caused by Decline Disease in Bayberry Plants through Changes in Soil Properties, Rhizosphere Microbial Community Structure and Metabolites. PLANTS (BASEL, SWITZERLAND) 2021; 10:2083. [PMID: 34685892 PMCID: PMC8540645 DOI: 10.3390/plants10102083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/25/2021] [Accepted: 09/28/2021] [Indexed: 05/03/2023]
Abstract
Decline disease causes serious damage and rapid death in bayberry, an important fruit tree in south China, but the cause of this disease remains unclear. The aim of this study was to investigate soil quality, microbial community structure and metabolites of rhizosphere soil samples from healthy and diseased trees. The results revealed a significant difference between healthy and diseased bayberry in soil properties, microbial community structure and metabolites. Indeed, the decline disease caused a 78.24% and 78.98% increase in Rhizomicrobium and Cladophialophora, but a 28.60%, 57.18%, 38.84% and 68.25% reduction in Acidothermus, Mortierella, Trichoderma and Geminibasidium, respectively, compared with healthy trees, based on 16S and ITS amplicon sequencing of soil microflora. Furthermore, redundancy discriminant analysis of microbial communities and soil properties indicated that the main variables of bacterial and fungal communities included pH, organic matter, magnesium, available phosphorus, nitrogen and calcium, which exhibited a greater influence in bacterial communities than in fungal communities. In addition, there was a high correlation between the changes in microbial community structure and secondary metabolites. Indeed, GC-MS metabolomics analysis showed that the healthy and diseased samples differed over six metabolic pathways, including thiamine metabolism, phenylalanine-tyrosine-tryptophan biosynthesis, valine-leucine-isoleucine biosynthesis, phenylalanine metabolism, fatty acid biosynthesis and fatty acid metabolism, where the diseased samples showed a 234.67% and 1007.80% increase in palatinitol and cytidine, respectively, and a 17.37-8.74% reduction in the other 40 metabolites compared to the healthy samples. Overall, these results revealed significant changes caused by decline disease in the chemical properties, microbiota and secondary metabolites of the rhizosphere soils, which provide new insights for understanding the cause of this bayberry disease.
Collapse
Affiliation(s)
- Haiying Ren
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (X.Q.); (Z.Y.); (X.Z.); (S.Z.)
| | - Hongyan Wang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (X.Q.); (Z.Y.); (X.Z.); (S.Z.)
- School of Horticulture and Landscape architecture, Yangtze University, Jingzhou 434023, China
| | - Xingjiang Qi
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (X.Q.); (Z.Y.); (X.Z.); (S.Z.)
| | - Zheping Yu
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (X.Q.); (Z.Y.); (X.Z.); (S.Z.)
| | - Xiliang Zheng
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (X.Q.); (Z.Y.); (X.Z.); (S.Z.)
| | - Shuwen Zhang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (H.R.); (H.W.); (X.Q.); (Z.Y.); (X.Z.); (S.Z.)
| | - Zhenshuo Wang
- College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Muchen Zhang
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.Z.); (T.A.)
| | - Temoor Ahmed
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.Z.); (T.A.)
| | - Bin Li
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.Z.); (T.A.)
| |
Collapse
|
20
|
In Vitro and In Vivo Antifungal Activity of Sorbicillinoids Produced by Trichoderma longibrachiatum. J Fungi (Basel) 2021; 7:jof7060428. [PMID: 34071658 PMCID: PMC8229967 DOI: 10.3390/jof7060428] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/25/2021] [Accepted: 05/27/2021] [Indexed: 11/16/2022] Open
Abstract
In the search for antifungal agents from marine resources, we recently found that the culture filtrate of Trichoderma longibrachiatum SFC100166 effectively suppressed the development of tomato gray mold, rice blast, and tomato late blight. The culture filtrate was then successively extracted with ethyl acetate and n-butanol to identify the fungicidal metabolites. Consequently, a new compound, spirosorbicillinol D (1), and a new natural compound, 2',3'-dihydro-epoxysorbicillinol (2), together with 11 known compounds (3-13), were obtained from the solvent extracts. The chemical structures were determined by spectroscopic analyses and comparison with literature values. The results of the in vitro antifungal assay showed that of the tested fungal pathogens, Phytophthora infestans was the fungus most sensitive to the isolated compounds, with MIC values ranging from 6.3 to 400 µg/mL, except for trichotetronine (9) and trichodimerol (10). When tomato plants were treated with the representative compounds (4, 6, 7, and 11), bisvertinolone (6) strongly reduced the development of tomato late blight disease compared to the untreated control. Taken together, our results revealed that the culture filtrate of T. longibrachiatum SFC100166 and its metabolites could be useful sources for the development of new natural agents to control late blight caused by P. infestans.
Collapse
|
21
|
Curvularia lunata as new causal pathogen of tomato early blight disease in Egypt. Mol Biol Rep 2021; 48:3001-3006. [PMID: 33687701 DOI: 10.1007/s11033-021-06254-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/25/2021] [Indexed: 10/22/2022]
Abstract
Tomato plants displaying early blight symptoms were collected from different localities in the provinces of Assiut and Sohag, Egypt. The causal pathogens were isolated on potato dextrose agar plates. Pathogenicity tests with 48 isolates were carried out under greenhouse conditions on tomato cultivar (CV 844). All tested isolates caused symptoms of early blight disease with different degrees. The highest disease severity on tomato plants was found after inoculation with isolate No. 6 followed by isolates No. 20 and No. 31. The most pathogenic isolates were identified by sequence analysis using ITS1 and ITS4 primers. The analysis of the amplified sequences from fungal isolates No. 6, 20 and 31 displayed 99-100% nucleotide identity with Alternaria solani, Curvularia lunata and A. alternata, respectively. To our knowledge, this is the first report of Curvularia lunata as one of the causal pathogens of early blight disease of tomato plants in Egypt.
Collapse
|
22
|
Zhang J, Wei L, Yang J, Ahmed W, Wang Y, Fu L, Ji G. Probiotic Consortia: Reshaping the Rhizospheric Microbiome and Its Role in Suppressing Root-Rot Disease of Panax notoginseng. Front Microbiol 2020; 11:701. [PMID: 32425904 PMCID: PMC7203884 DOI: 10.3389/fmicb.2020.00701] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/25/2020] [Indexed: 12/13/2022] Open
Abstract
Root-rot disease caused by Fusarium oxysporum is a growing problem in agriculture for commercial cultivation of Panax notoginseng. Diverse microbes colonize plant roots, and numerous earlier studies have characterized the rhizospheric microbiome of P. notoginseng; nevertheless, the function of probiotic consortia on the rhizospheric microbiome against the root-rot disease remain elusive. We have compared and described the rhizospheric microbiome of lightly and severely diseased P. notoginseng as well as the interactions of the probiotic consortia and rhizospheric microbiome, and their function to alleviate the plant diseases were explored by inoculating probiotic consortia in bulk soil. From the perspective of microbial diversity, the rhizospheric dominant bacterial and fungal genera were utterly different between lightly and severely diseased plants. Through inoculating assembled probiotic consortia to diseased plant roots, we found that the application of probiotic consortia reshaped the rhizosphere microbiome, increasing the relative abundance of bacteria and fungi, while the relative abundance of potential pathogens was decreased significantly. We developed a microcosm system that provides a preliminary ecological framework for constructing an active probiotic community to reshape soil microbiota and restrain the disease. Microbial community structure differs between lightly and seriously diseased plants. The application of probiotic consortia changes the imbalance of micro-ecology to a state of relative health, reducing plant mortality. Plant disease suppression may be achieved by seeking and applying antagonistic microbes based on their direct inhibitory capability or by restructuring the soil microbiome structure and function.
Collapse
Affiliation(s)
- Jinhao Zhang
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Lanfang Wei
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Jun Yang
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Waqar Ahmed
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Yating Wang
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Lina Fu
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China.,Agriculture and Rural Affairs Committee of Fengdu County, Chongqing, China
| | - Guanghai Ji
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| |
Collapse
|
23
|
Du FY, Ju GL, Xiao L, Zhou YM, Wu X. Sesquiterpenes and Cyclodepsipeptides from Marine-Derived Fungus Trichoderma longibrachiatum and Their Antagonistic Activities against Soil-borne Pathogens. Mar Drugs 2020; 18:md18030165. [PMID: 32188169 PMCID: PMC7142749 DOI: 10.3390/md18030165] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/05/2020] [Accepted: 03/11/2020] [Indexed: 01/25/2023] Open
Abstract
Soil-borne pathogens, including phytopathogenic fungi and root-knot nematodes, could synergistically invade vegetable roots and result in serious economic losses. The genus of Trichoderma has been proven to be a promising reservoir of biocontrol agents in agriculture. In this study, the search for antagonistic metabolites from a marine-derived fungus, Trichoderma longibrachiatum, obtained two structural series of sesquiterpenes 1-6 and cyclodepsipeptides 7-9. Notably, the novel 1 was a rare norsesquiterpene characterized by an unprecedented tricyclic-6/5/5-[4.3.1.01,6]-decane skeleton. Their structures were elucidated by extensive spectroscopic analyses, while the absolute configuration of novel 1 was determined by the comparison of experimental and calculated ECD spectra. The novel 1 and known 2 and 3 showed significant antifungal activities against Colletotrichum lagrnarium with MIC values of 8, 16, and 16 μg/mL respectively, even better than those of the commonly used synthetic fungicide carbendazim with 32 μg/mL. They also exhibited antifungal potential against carbendazim-resistant Botrytis cinerea. Cyclodepsipeptides 7-9 showed moderate nematicidal activities against the southern root-knot nematode (Meloidogyne incognita). This study constitutes the first report on the antagonistic effects of metabolites from T. Longibrachiatum against soil-borne pathogens, also highlighting the integrated antagonistic potential of marine-derived T. Longibrachiatum as a biocontrol agent.
Collapse
Affiliation(s)
- Feng-Yu Du
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China; (F.-Y.D.); (G.-L.J.); (L.X.)
- Shandong Key Laboratory of Applied Mycology, Qingdao Agricultural University, Qingdao 266109, China
| | - Guang-Lin Ju
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China; (F.-Y.D.); (G.-L.J.); (L.X.)
| | - Lin Xiao
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China; (F.-Y.D.); (G.-L.J.); (L.X.)
| | - Yuan-Ming Zhou
- Analytical and Testing Center, Qingdao Agricultural University, Qingdao 266109, China;
| | - Xia Wu
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
- Correspondence:
| |
Collapse
|
24
|
Zhang J, Wei L, Yang J, Ahmed W, Wang Y, Fu L, Ji G. Probiotic Consortia: Reshaping the Rhizospheric Microbiome and Its Role in Suppressing Root-Rot Disease of Panax notoginseng. Front Microbiol 2020. [PMID: 32425904 DOI: 10.3389/fpls.2017.0701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
Root-rot disease caused by Fusarium oxysporum is a growing problem in agriculture for commercial cultivation of Panax notoginseng. Diverse microbes colonize plant roots, and numerous earlier studies have characterized the rhizospheric microbiome of P. notoginseng; nevertheless, the function of probiotic consortia on the rhizospheric microbiome against the root-rot disease remain elusive. We have compared and described the rhizospheric microbiome of lightly and severely diseased P. notoginseng as well as the interactions of the probiotic consortia and rhizospheric microbiome, and their function to alleviate the plant diseases were explored by inoculating probiotic consortia in bulk soil. From the perspective of microbial diversity, the rhizospheric dominant bacterial and fungal genera were utterly different between lightly and severely diseased plants. Through inoculating assembled probiotic consortia to diseased plant roots, we found that the application of probiotic consortia reshaped the rhizosphere microbiome, increasing the relative abundance of bacteria and fungi, while the relative abundance of potential pathogens was decreased significantly. We developed a microcosm system that provides a preliminary ecological framework for constructing an active probiotic community to reshape soil microbiota and restrain the disease. Microbial community structure differs between lightly and seriously diseased plants. The application of probiotic consortia changes the imbalance of micro-ecology to a state of relative health, reducing plant mortality. Plant disease suppression may be achieved by seeking and applying antagonistic microbes based on their direct inhibitory capability or by restructuring the soil microbiome structure and function.
Collapse
Affiliation(s)
- Jinhao Zhang
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Lanfang Wei
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Jun Yang
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Waqar Ahmed
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Yating Wang
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Lina Fu
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
- Agriculture and Rural Affairs Committee of Fengdu County, Chongqing, China
| | - Guanghai Ji
- Key Laboratory of Agriculture Biodiversity for Plant Disease Management Under the Ministry of Education, Yunnan Agricultural University, Kunming, China
| |
Collapse
|