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Song Y, Liu X, Zhao K, Ma R, Wu W, Zhang Y, Duan L, Li X, Xu H, Cheng M, Qin B, Qi Z. A new endophytic Penicillium oxalicum with aphicidal activity and its infection mechanism. PEST MANAGEMENT SCIENCE 2024. [PMID: 38958097 DOI: 10.1002/ps.8288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 06/03/2024] [Accepted: 06/23/2024] [Indexed: 07/04/2024]
Abstract
BACKGROUND Aphid infestation adversely affects the yield and quality of crops. Rapid reproduction and insecticidal resistance have made controlling aphids in the field challenging. Therefore, the present study investigated the insecticidal property of Penicillium oxalicum (QLhf-1) and its mechanism of action against aphids, Hyalopterus arundimis Fabricius. RESULTS Bioassay revealed that the control efficacy of the spores against aphids (86.30% and 89.05% on the third day and fifth day after infection, respectively) were higher than other components, such as the mycelium. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed that QLhf-1 invaded the aphid cuticle through spores and used the aphid tissues as a nutrient source for growth and reproduction, causing stiffness and atrophy and a final death. Three extracellular enzymes, lipase, protease, and chitinase had a synergistic effect with spores, and they acted together to complete the infection process by degrading the aphid body wall and accelerating the infection process. CONCLUSION The newly discovered endophytic penicillin strain P. oxalicum 'QLhf-1' can effectively kill aphids. The results provided strong evidence for the biological control of aphids, and lay a foundation for the development and utilization of QLhf-1. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yuxin Song
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Xiaoli Liu
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Kangbo Zhao
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Ruyi Ma
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Wenjun Wu
- College of Plant Protection, Northwest A&F University, Yangling, China
- Key Laboratory for Botanical Pesticide R&D of Shaanxi Province, Yangling, China
| | - Yuanyuan Zhang
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Longfei Duan
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Xinnuo Li
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Hong Xu
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Min Cheng
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Baofu Qin
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Zhijun Qi
- College of Plant Protection, Northwest A&F University, Yangling, China
- Key Laboratory for Botanical Pesticide R&D of Shaanxi Province, Yangling, China
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Wang R, Zhang J, Sun Z, Jian X, Xu Y, Zhou X, Liang X, Lin J, Li B, Mu W, Li Y. Eucalyptol-loaded microcapsules combined with Cynanchum komarovii extracts provide long-term and low-risk management of Chinese wolfberry (Lycium barbarum L.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 270:115874. [PMID: 38176181 DOI: 10.1016/j.ecoenv.2023.115874] [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: 08/31/2023] [Revised: 11/21/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
Realizing eco-friendly, long-term, and low-risk aphid control on Lycium barbarum (medicinal cash crop) using a Cynanchum komarovii extracts and eucalyptus oil-loaded microcapsules (EOMCs) formulation compositions is viable. In this study, the aim is to optimize the composition of Cynanchum komarovii extracts and EOMCs formulation for effective control of aphids, the release of EOMCs was controlled by changing the cross-linking degree of the shell to match the aphid control characteristics of Cynanchum komarovii extracts. Four types of polyamines were used as cross-linking agents for the preparation of EOMCs by interfacial polymerization. The bioactivity, wettability, and field application efficacy of Cynanchum komarovii extracts and different EOMCs formulation compositions were evaluated. These EOMCs exhibited an encapsulation efficiency exceeding 85 %. The control efficiency of the formulation compositions of microcapsules with a moderate release rate and Cynanchum komarovii extracts on aphids remained at 62.86 %, while the control efficiency of the combination of microcapsules with the fastest and slowest rates with Cynanchum komarovii extracts was only 48.62 % and 57.11 %, respectively. The formulation compositions of Cynanchum komarovii extracts with all four types of EOMCs were found to be safe for Chinese wolfberry plants. Overall, by selecting appropriate polyamines during fabrication, the release rate can be effectively controlled to achieve sustainable and low-risk aphid control in Lycium barbarum through compounding with selected microcapsules.
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Affiliation(s)
- Rui Wang
- Wolfberry Science Research Institute, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, PR China; Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Jian Zhang
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Zhengyi Sun
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xuewen Jian
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Yue Xu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xuan Zhou
- Wolfberry Science Research Institute, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, PR China; National Wolfberry Engineering Research Center, Yinchuan 750002, Ningxia, PR China
| | - Xiaojie Liang
- Wolfberry Science Research Institute, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, PR China; National Wolfberry Engineering Research Center, Yinchuan 750002, Ningxia, PR China
| | - Jin Lin
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Beixing Li
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Wei Mu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Yuekun Li
- Wolfberry Science Research Institute, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, PR China; National Wolfberry Engineering Research Center, Yinchuan 750002, Ningxia, PR China.
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