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Wang G, Zhang X, Du G, Wang W, Yao Y, Jin S, Cai H, Peng Y, Chen B. Oleic Acid and Linoleic Acid Enhances the Biocontrol Potential of Metarhizium rileyi. J Fungi (Basel) 2024; 10:521. [PMID: 39194847 DOI: 10.3390/jof10080521] [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: 06/21/2024] [Revised: 07/23/2024] [Accepted: 07/25/2024] [Indexed: 08/29/2024] Open
Abstract
Metarhizium rileyi is a wide spread insect fungi with a good biocontrol potentiality to various pests, particularly noctuid insects. However, it is characterized by its slow growth, its sensitivity to abiotic stress, and the slow speed of kill to pests, which hinder its use compared with other entomopathogenic fungi. In this study, the responses of M. rileyi to eight types of lipids were observed; among the lipids, oleic acid and linoleic acid significantly promoted the growth and development of M. rileyi and enhanced its stress tolerances and virulence. An additional mechanistic study demonstrated that exogenous oleic acid and linoleic acid significantly improved the conidial germination, appressorium formation, cuticle degradation, and cuticle infection, which appear to be largely dependent on the up-regulation of gene expression in growth, development, protective, and cuticle-degrading enzymes. In conclusion, exogenous oleic acid and linoleic acid enhanced the stress tolerances and virulence of M. rileyi via protecting conidial germination and promoting cuticle infection. These results provide new insights for the biopesticide development of M. rileyi.
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Affiliation(s)
- Guang Wang
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Xu Zhang
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Guangzu Du
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Wenqian Wang
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Yunhao Yao
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Sitong Jin
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Haosheng Cai
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Yuejin Peng
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Bin Chen
- Yunnan State Key Laboratory of Conservation and Utilization of Biological Resources, College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
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2
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Castro-Saines E, Lagunes-Quintanilla R, Hernández-Ortiz R. Microbial agents for the control of ticks Rhipicephalus microplus. Parasitol Res 2024; 123:275. [PMID: 39017922 DOI: 10.1007/s00436-024-08291-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 07/07/2024] [Indexed: 07/18/2024]
Abstract
Ticks are ectoparasites responsible for the transmission of various pathogens to vertebrates. They represent one of the major threats to livestock production worldwide due to their impact on the health, production and welfare of livestock destined for human consumption. The development of resistance to the main families of ixodicides used for their control has led to the search for new alternatives, where microbial control is an option. The use of microbial control agents against the tick Rhipicephalus microplus is reviewed in this paper. Bacteria such as Bacillus thuringiensis, Serratia marcescens and Staphylococcus spp. the nematodes Steinernema spp. and Heterorhabditis spp. as well as the fungi Metarhizium anisopliae and Beauveria bassiana are the most studied organisms for use as biological control agents against ticks. Laboratory, stable and field trials with free-living and parasitised ticks have shown that microbial agents can control both susceptible and ixodicide-resistant tick populations. However, multidisciplinary studies using novel tools like genomics, transcriptomics and proteomics should be carried out to understand the virulence factors which microbial agents use to induce pathogenesis and virulence in ticks. In addition, applied research will be carried out with the aim of improving techniques for large-scale application, as well as the improvement of cultivation, storage, formulation and application methods.
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Affiliation(s)
- Edgar Castro-Saines
- Centro Nacional de Investigación Disciplinaria en Salud Animal E Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Carretera Federal Cuernavaca-Cuautla 8534, Colonia Progreso, Jiutepec, Morelos, CP 62550, México.
| | - Rodolfo Lagunes-Quintanilla
- Centro Nacional de Investigación Disciplinaria en Salud Animal E Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Carretera Federal Cuernavaca-Cuautla 8534, Colonia Progreso, Jiutepec, Morelos, CP 62550, México
| | - Rubén Hernández-Ortiz
- Centro Nacional de Investigación Disciplinaria en Salud Animal E Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Carretera Federal Cuernavaca-Cuautla 8534, Colonia Progreso, Jiutepec, Morelos, CP 62550, México
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3
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Hu H, Ma Y, Song X, Wang D, Ren X, Wu C, Liu C, Ma X, Shan Y, Meng Y, Ma Y. Tank-Mix Adjuvants Enhance Pesticide Efficacy by Improving Physicochemical Properties and Spraying Characteristics for Application to Cotton with Unmanned Aerial Vehicles. ACS OMEGA 2024; 9:31011-31025. [PMID: 39035928 PMCID: PMC11256106 DOI: 10.1021/acsomega.4c04301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/14/2024] [Accepted: 06/17/2024] [Indexed: 07/23/2024]
Abstract
Tank-mix adjuvants have been used to reduce spray drift and facilitate the efficacy of pesticides applied with unmanned aerial vehicles (UAVs). However, the effects of specific adjuvants on pesticide characteristics and the mechanism of action remain unclear. Herein, we analyzed the effects of three different types of tank-mix adjuvants (plant oil; mineral oil; and mixture of alcohol and ester) on the surface tension (ST), contact angle, wetting, permeation, evaporation, spray performance, and aphid-control effects of two types of pesticides. The mineral oil adjuvant Weichi (WCH) was highly effective in reducing the pesticide solution ST, improving the wetting and penetration ability, increasing droplet size, and promoting droplet deposition. The mixed alcohol and ester adjuvant Quanrun (QR) showed excellent wetting and antievaporation properties and promoted droplet deposition. A plant oil adjuvant (Beidatong) moderately improved wetting and penetration ability and reduced droplet drift. Field tests showed that the control efficiencies (CEs) of two pesticides were increased after the addition of adjuvants, even with 20% reductions in pesticide application. When the UAV was operated at 1.5 m, the CEs of two pesticides were increased from 65.39 and 66.63% to 73.11-76.52% and 77.91-88.31%, respectively. When operated at 2.5 m, the CEs were increased from 51.24 and 68.60% to 65.06-75.70% and 77.57-92.59%, respectively. Especially, the CEs of pesticides with WCH and QR increased obviously. Importantly, neither WCH nor QR inhibited hatching of the critical insect natural enemy ladybird beetle at concentrations used in the field. This study provides a framework for assessment of tank-mix adjuvants in aerial sprays and directly demonstrates the value of specific adjuvants in improving pesticide bioavailability and minimizing associated environmental pollution.
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Affiliation(s)
- Hongyan Hu
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, School of Agricultural
Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Yajie Ma
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Xianpeng Song
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Dan Wang
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Xiangliang Ren
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, School of Agricultural
Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Changcai Wu
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Chunhong Liu
- Institute
of Pepper Research, Anyang Academy of Agricultural
Sciences, Anyang 455000, Henan, China
| | - Xiaoyan Ma
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, School of Agricultural
Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
| | - Yongpan Shan
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, School of Agricultural
Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yanhua Meng
- School
of Mechanical Engineering, Anyang Institute
of Technology, Anyang 455000, Henan, China
| | - Yan Ma
- State
Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, China
- Zhengzhou
Research Base, State Key Laboratory of Cotton Biology, School of Agricultural
Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
- Western
Agricultural Research Center, Chinese Academy
of Agricultural Sciences, Changji 831100, China
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Klafke GM, Golo PS, Monteiro CMO, Costa-Júnior LM, Reck J. Brazil's battle against Rhipicephalus (Boophilus) microplus ticks: current strategies and future directions. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2024; 33:e001423. [PMID: 38922203 PMCID: PMC11253825 DOI: 10.1590/s1984-29612024026] [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: 01/18/2024] [Accepted: 03/26/2024] [Indexed: 06/27/2024]
Abstract
Ticks are parasitic arthropods that cause significant economic losses to livestock production worldwide. Although Rhipicephalus (Boophilus) microplus, the cattle tick, occurs throughout the Brazilian territory, there is no official program to control this tick, which is the vector of tick fever pathogens. We address the situation of R. (B.) microplus resistance to synthetic acaricides in Brazil, including cattle tick management; the status of tick resistance per Brazilian state; the history of resistance occurrence of different acaricides; multiple resistance occurrence; and the main strategies for integrated tick management. Tick control in Brazil is characterized by management errors. Local laboratories affiliated with federal and state research institutions and universities employ the Adult Immersion Test as a primary diagnostic method to assess acaricide resistance to topically applied drugs. Only three states (Acre, Amapá, and Amazonas) have no reports on resistant populations. Misinformation on tick control strategies, misuse of available products for tick control, no adoption of Integrated Parasite Management (IPM) practices, low technical support to producers, and the high-speed emergence of acaricide-resistant tick populations are the main problems. We also propose a list of needs and priorities for cattle tick control regarding communication, research, and policies.
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Affiliation(s)
| | - Patrícia Silva Golo
- Universidade Federal Rural do Rio de Janeiro – UFRRJ, Seropédica, RJ, Brasil
| | | | | | - José Reck
- Instituto de Pesquisas Veterinárias Desidério Finamor – IPVDF, Eldorado do Sul, RS, Brasil
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Wadaan MA, Khattak B, Riaz A, Hussain M, Khan MJ, Fozia F, Iftikhar A, Ahmad I, Khan MF, Baabbad A, Ziaullah. Biological Control of Hyalomma Ticks in Cattle by Fungal Isolates. Vet Sci 2023; 10:684. [PMID: 38133234 PMCID: PMC10747915 DOI: 10.3390/vetsci10120684] [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: 10/04/2023] [Revised: 11/09/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
Ticks pose a major threat to cattle health and production in Pakistan because they transmit pathogens of diseases like Babesiosis and Theileriosis. Hyalomma spp., found across Africa, Asia, and Europe, are especially problematic. This study explored biocontrol of Hyalomma spp. using spore-free fungal culture filtrates collected from dairy farm soil in Kohat, Pakistan. Three fungal species of the genera Alternaria, Aspergillus, and Penicillium were isolated, and their filtrates were tested against tick adults and larvae. Filtrate concentrations were prepared at different strengths. Data were taken after the exposure of adults and larvae ticks to various concentrations of the fungal filtrates. Results indicated that at 100% concentration, all fungal filtrates induced 100% mortality in adults and larvae. Decreasing filtrate concentration lowered tick mortality. The lowest concentration caused the least mortality. The effect was time- and dose-dependent. In conclusion, spore-free fungal culture filtrates can provide biocontrol of Hyalomma spp. in a time- and concentration-dependent manner. Further research should explore the active compounds causing mortality and optimal application methods. The process outlined here provides a natural biocontrol alternative to chemical pesticides to reduce tick infestations and associated cattle diseases in Pakistan.
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Affiliation(s)
- Mohammad Ahmad Wadaan
- Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Baharullah Khattak
- Department of Microbiology, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Aneela Riaz
- Department of Microbiology, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Mubbashir Hussain
- Department of Microbiology, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Muhammad Jamil Khan
- Department of Animal Sciences, Facility of Biological Sciences, Quaid-I-Azam University, Islamabad 45320, Pakistan
| | - Fozia Fozia
- Department of Biochemistry, KMU Institute of Dental Sciences, Kohat 26000, Pakistan
| | - Anisa Iftikhar
- Department of Biology, Clarkson University, Potsdam, NY 13699, USA
| | - Ijaz Ahmad
- Department of Chemistry, Kohat University of Sciences & Technology, Kohat 26000, Pakistan;
| | - Muhammad Farooq Khan
- Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Almohannad Baabbad
- Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ziaullah
- College of Professional Studies, Northeastern University, Boston, MA 02115, USA
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