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Berini F, Montali A, Liguori R, Venturini G, Bonelli M, Shaltiel-Harpaz L, Reguzzoni M, Siti M, Marinelli F, Casartelli M, Tettamanti G. Production and characterization of Trichoderma asperellum chitinases and their use in synergy with Bacillus thuringiensis for lepidopteran control. PEST MANAGEMENT SCIENCE 2024; 80:3401-3411. [PMID: 38407453 DOI: 10.1002/ps.8045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Despite their known negative effects on ecosystems and human health, synthetic pesticides are still largely used to control crop insect pests. Currently, the biopesticide market for insect biocontrol mainly relies on the entomopathogenic bacterium Bacillus thuringiensis (Bt). New biocontrol tools for crop protection might derive from fungi, in particular from Trichoderma spp., which are known producers of chitinases and other bioactive compounds able to negatively affect insect survival. RESULTS In this study, we first developed an environmentally sustainable production process for obtaining chitinases from Trichoderma asperellum ICC012. Then, we investigated the biological effects of this chitinase preparation - alone or in combination with a Bt-based product - when orally administered to two lepidopteran species. Our results demonstrate that T. asperellum efficiently produces a multi-enzymatic cocktail able to alter the chitin microfibril network of the insect peritrophic matrix, resulting in delayed development and larval death. The co-administration of T. asperellum chitinases and sublethal concentrations of Bt toxins increased larval mortality. This synergistic effect was likely due to the higher amount of Bt toxins that passed the damaged peritrophic matrix and reached the target receptors on the midgut cells of chitinase-treated insects. CONCLUSION Our findings may contribute to the development of an integrated pest management technology based on fungal chitinases that increase the efficacy of Bt-based products, mitigating the risk of Bt-resistance development. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Francesca Berini
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
- Interuniversity Centre for Studies on Bioinspired Agro-Environmental Technology (BAT Centre), University of Naples Federico II, Portici, Italy
| | - Aurora Montali
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Riccardo Liguori
- Isagro Research Centre affiliated to Gowan Crop Protection Ltd, Novara, Italy
| | - Giovanni Venturini
- Isagro Research Centre affiliated to Gowan Crop Protection Ltd, Novara, Italy
| | - Marco Bonelli
- Department of Biosciences, University of Milan, Milan, Italy
| | - Liora Shaltiel-Harpaz
- Integrated Pest Management Laboratory Northern R&D, MIGAL - Galilee Research Institute, Kiryat Shmona, Israel
- Environmental Sciences Department, Faculty of Sciences and Technology, Tel Hai College, Kiryat Shmona, Israel
| | - Marcella Reguzzoni
- Department of Medicine and Technological Innovation, University of Insubria, Varese, Italy
| | - Moran Siti
- Luxembourg Industries Ltd, Tel-Aviv, Israel
| | - Flavia Marinelli
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
- Interuniversity Centre for Studies on Bioinspired Agro-Environmental Technology (BAT Centre), University of Naples Federico II, Portici, Italy
| | - Morena Casartelli
- Interuniversity Centre for Studies on Bioinspired Agro-Environmental Technology (BAT Centre), University of Naples Federico II, Portici, Italy
- Department of Biosciences, University of Milan, Milan, Italy
| | - Gianluca Tettamanti
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
- Interuniversity Centre for Studies on Bioinspired Agro-Environmental Technology (BAT Centre), University of Naples Federico II, Portici, Italy
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Qin Y, Liu X, Peng G, Xia Y, Cao Y. Recent Advancements in Pathogenic Mechanisms, Applications and Strategies for Entomopathogenic Fungi in Mosquito Biocontrol. J Fungi (Basel) 2023; 9:746. [PMID: 37504734 PMCID: PMC10381795 DOI: 10.3390/jof9070746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/29/2023] Open
Abstract
Fungal diseases are widespread among insects and play a crucial role in naturally regulating insect populations. Mosquitoes, known as vectors for numerous infectious diseases, pose a significant threat to human health. Entomopathogenic fungi (EPF) have emerged as highly promising alternative agents to chemical mosquitocides for controlling mosquitoes at all stages of their life cycle due to their unique infection pathway through direct contact with the insect's cuticle. In recent years, significant advancements have been made in understanding the infection pathways and pathogenic mechanisms of EPF against mosquitoes. Various strategies involving the use of EPF alone or combinations with other approaches have been employed to target mosquitoes at various developmental stages. Moreover, the application of genetic technologies in fungi has opened up new avenues for enhancing the mosquitocidal efficacy of EPF. This review presents a comprehensive summary of recent advancements in our understanding the pathogenic mechanisms of EPF, their applications in mosquito management, and the combination of EPF with other approaches and employment of transgenic technologies. The biosafety concerns associated with their use and the corresponding approaches are also discussed. The recent progress suggests that EPF have the potential to serve as a future biorational tool for controlling mosquito vectors.
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Affiliation(s)
- Yujie Qin
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Engineering Research Center for Fungal Insecticides, Chongqing 401331, China
- Key Laboratory of Gene Function and Regulation Technologies, Chongqing Municipal Education Commission, Chongqing 401331, China
| | - Xiaoyu Liu
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Engineering Research Center for Fungal Insecticides, Chongqing 401331, China
- Key Laboratory of Gene Function and Regulation Technologies, Chongqing Municipal Education Commission, Chongqing 401331, China
| | - Guoxiong Peng
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Engineering Research Center for Fungal Insecticides, Chongqing 401331, China
- Key Laboratory of Gene Function and Regulation Technologies, Chongqing Municipal Education Commission, Chongqing 401331, China
| | - Yuxian Xia
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Engineering Research Center for Fungal Insecticides, Chongqing 401331, China
- Key Laboratory of Gene Function and Regulation Technologies, Chongqing Municipal Education Commission, Chongqing 401331, China
| | - Yueqing Cao
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Chongqing Engineering Research Center for Fungal Insecticides, Chongqing 401331, China
- Key Laboratory of Gene Function and Regulation Technologies, Chongqing Municipal Education Commission, Chongqing 401331, China
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Zhu K, Liu X, Qi X, Liu Q, Wang B, Sun W, Pan B. Acaricidal activity of bioactive compounds isolated from Aspergillus oryzae against poultry red mites, Dermanyssus gallinae (Acari: Dermanyssidae). Vet Parasitol 2023; 320:109983. [PMID: 37450962 DOI: 10.1016/j.vetpar.2023.109983] [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: 04/26/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
Dermanyssus gallinae, the poultry red mite (PRM), is an obligate ectoparasite feeding on poultry blood, seriously affecting the health of layers and egg production. The control of PRMs mainly relies on chemical drugs, which is facing several challenges such as the environment pollution and drug resistance. Using fungal metabolites is an environmentally friendly alternative for the control of pests. However, few studies have been conducted on the efficacy of fungal metabolites against D. gallinae. In this study, five strains of fungi were isolated from D. gallinae under laboratory conditions, and their extracts with ethyl acetate were tested for acaricidal activity on D. gallinae. The crude extract of Aspergillus oryzae caused 75.55 ± 6.94% mortality of mites at a concentration of 12.5 mg/mL, showing the highest acaricidal effect in all extracts. Subsequently, the extract of A. oryzae was isolated by bio-guided fractionation, and ten major compounds were identified by LC-MS/MS analysis. The results of bioassays indicated that five compounds exhibited acaricidal activity against D. gallinae. N, N-dimethyldecylamine N-oxide was the optimal acaricidal compound with LC50 of 0.568 mg/mL. Additionally, palmitic acid, triethanolamine, cuminaldehyde, and 2,4-dimethylbenzaldehyde also showed acaricidal activity. These compounds have great application potential in the mite control, and the analysis of these fungal acaricidal substances provides a new idea and basis for the subsequent development of PRM control technology.
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Affiliation(s)
- Kexin Zhu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Xin Liu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Xiaoxiao Qi
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Qi Liu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Bohan Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Weiwei Sun
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Baoliang Pan
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
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Mukherjee A, Ghosh SK. An eco-friendly approach of biocontrol of aphid (Aphis gossypii Glover) by Trichoderma harzianum. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 195:102. [PMID: 36371583 DOI: 10.1007/s10661-022-10726-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Aphid (Aphis gossypii) is one of the important pests of papaya crop. In this work, applications of Trichoderma harzianum and Beauveria bassiana (biocontrol agents) and malathion (insecticide) were conducted in vitro and in agrifields for testing their anti-aphid efficacy and compared their efficacy. Furthermore, the enzymatic mechanism of T. harzianum with respect to biocontrolling the pest was unearthed. The LD50 dose of T. harzianum and B. bassiana was 1.2 × 105 spores mL-1 and 1.0 × 106 spores mL-1 respectively after 48 h of administration. The LT50 of T. harzianum also exhibited a lower effective time (47.70 h) than B. bassiana (57.53 h) for the same concentration of spores applied (1 × 105 spores mL-1). The pooled data analysis of two years (2019-2020) showed that the application of T. harzianum spores in agrifields exhibited 31.75 ± 13.00a percentage of reduction of aphid population whereas malathion exhibited 23.93 ± 1.30a%, in comparison to control. The statistical analysis indicated that the application of malathion exhibited the same efficacy as T. harzianum isolate and placed in the same category. In plate detection assay, T. harzianum produced a higher hydrolytic zone for chitinase (8.0 ± 0.4 cm diameter) and protease (7.0 ± 0.4 cm diameter) enzymes, than B. bassiana (1.3 ± 0.2 cm and 1.1 ± 0.2 cm respectively). Quantitative estimation of enzymes exhibited that T. harzianum produced 299 ± 11a μg mL-1 of chitinase, 519 ± 19a μg mL-1 of protease, and 65 ± 12a μg mL-1 of PR1, and on the other hand, B. bassiana yielded 124 ± 12b, 361 ± 23b, and 29 ± 18b μg mL-1 of chitinase, protease, and PR1 respectively. It indicated that T. harzianum was superior over the B. bassiana in terms of production capacity of all three enzymes. In conclusion, all the above experimental results suggested that T. harzianum showed better aphid-killing efficacy than B. bassiana. It also suggested that T. harzianum should replace hazardous chemical pesticide (malathion) for eco-friendly biocontrol of aphids.
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Affiliation(s)
- Anirvan Mukherjee
- Molecular Mycopathology Lab., Biocontrol and Cancer Research Unit, Department of Botany, Ramakrishna Mission Vivekananda Centenary College (Autonomous), Rahara, Kolkata, 700118, India
| | - Swapan Kumar Ghosh
- Molecular Mycopathology Lab., Biocontrol and Cancer Research Unit, Department of Botany, Ramakrishna Mission Vivekananda Centenary College (Autonomous), Rahara, Kolkata, 700118, India.
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Velavan V, Dhanapal R, Ramkumar G, Karthi S, Senthil-Nathan S, Ndomba OA, Kweka EJ. Characterization and Evaluation of Metarhizium spp. (Metsch.) Sorokin Isolates for Their Temperature Tolerance. J Fungi (Basel) 2022; 8:68. [PMID: 35050008 PMCID: PMC8780002 DOI: 10.3390/jof8010068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/29/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022] Open
Abstract
A field survey was done in teak (Tectona grandis F.) forests in South India to explore the entomopathogenic effect of Metarhizium anisopliae (Ascomycota: Sordariomycetes) against teak defoliator, Hyblaea puera (Lepidoptera: Hyblaeidae). About 300 soils and infected insect samples were collected during the survey and thirty-six fungal isolates were isolated from soil and insect samples and characterized. The fungi were cultured on PDAY with dodine and antibiotics. Generally, the EPF culture was incubated at 27 °C in darkness for 15 days. Virulence of the Entomopathogenic Fungi (EPF) ability to germinate under cold and heat temperatures was assessed in a culture impregnated with conidia. In the experiment, it was found that for the first time Metarhizium quizhouense, Metarhizium robertsii, and Metarhizium majus species caused significantly higher mortality to hosts. These isolates of M. anisopliae, M. robertsii, M. majus, and M. quizhouense were all considered to be effective virulent and environmentally adaptive. The Metarhizium isolates were recommended as effective bio-control agents through the field investigation of teak defoliator Hyblaea puera from South India forest. This study paves the way to utilize the indigenous isolates of EPF for the control of teak defoliator and to combat the pests thatare resistant to insecticide.
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Affiliation(s)
- Viswakethu Velavan
- ICAR-National Bureau of Agricultural Insect Resources, Bengaluru 560024, India
- Ashoka Trust for Research in Ecology and the Environment (ATREE), Bengaluru 560064, India
| | - Rajendran Dhanapal
- Adhiparasakthi Horticultural College, Tamil Nadu Agricultural University, Ranipet 632506, India
- Department of Entomology, Banaras Hindu University, Varanasi 221005, India
| | - Govindaraju Ramkumar
- Sri Paramakalyani Centre for Excellence in Environmental Sciences, Division of Bio pesticides and Environmental Toxicology, Manonmaniam Sundaranar University, Tirunelveli 627012, India; (G.R.); (S.K.)
| | - Sengodan Karthi
- Sri Paramakalyani Centre for Excellence in Environmental Sciences, Division of Bio pesticides and Environmental Toxicology, Manonmaniam Sundaranar University, Tirunelveli 627012, India; (G.R.); (S.K.)
| | - Sengottayan Senthil-Nathan
- Sri Paramakalyani Centre for Excellence in Environmental Sciences, Division of Bio pesticides and Environmental Toxicology, Manonmaniam Sundaranar University, Tirunelveli 627012, India; (G.R.); (S.K.)
| | - Osmund A. Ndomba
- Division of Livestock and Human Diseases Vector Control, Tropical Pesticides Research Institute, P.O. Box 3024, Arusha 23xxx, Tanzania; (O.A.N.); (E.J.K.)
| | - Eliningaya J. Kweka
- Division of Livestock and Human Diseases Vector Control, Tropical Pesticides Research Institute, P.O. Box 3024, Arusha 23xxx, Tanzania; (O.A.N.); (E.J.K.)
- Department of Medical Parasitology and Entomology, School of Medicine, Catholic University of Health and Allied Sciences, P.O. Box 1464, Mwanza 33xxx, Tanzania
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