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Lin Y, Qasim M, Hussain M, Akutse KS, Avery PB, Dash CK, Wang L. The Herbivore-Induced Plant Volatiles Methyl Salicylate and Menthol Positively affect Growth and Pathogenicity of Entomopathogenic Fungi. Sci Rep 2017; 7:40494. [PMID: 28079180 PMCID: PMC5227919 DOI: 10.1038/srep40494] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/06/2016] [Indexed: 11/16/2022] Open
Abstract
Some herbivore-induced-plant volatiles (HIPVs) compounds are vital for the functioning of an ecosystem, by triggering multi-trophic interactions for natural enemies, plants and herbivores. However, the effect of these chemicals, which play a crucial role in regulating the multi-trophic interactions between plant-herbivore-entomopathogenic fungi, is still unknown. To fill this scientific gap, we therefore investigated how these chemicals influence the entomopathogenic fungi growth and efficacy. In this study, Lipaphis erysimi induced Arabidopsis thaliana HIPVs were collected using headspace system and detected with GC-MS, and then analyzed the effects of these HIPVs chemicals on Lecanicillium lecanii strain V3450. We found that the HIPVs menthol and methyl salicylate at 1 and 10 nmol·ml-1 improved many performance aspects of the fungus, such as germination, sporulation, appressorial formation as well as its pathogenicity and virulence. These findings are not only important for understanding the multi-trophic interactions in an ecosystem, but also would contribute for developing new and easier procedures for conidial mass production as well as improve the pathogenicity and virulence of entomopathogenic fungi in biological pest management strategies.
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Affiliation(s)
- Yongwen Lin
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
| | - Muhammad Qasim
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
| | - Mubasher Hussain
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
| | - Komivi Senyo Akutse
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, China, Fuzhou 350002, China
- Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Pasco Bruce Avery
- University of Florida, Institute of Food and Agricultural Sciences, Indian River Research and Education Center, 2199 South Rock Road, Fort Pierce, FL 34945, USA
| | - Chandra Kanta Dash
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
| | - Liande Wang
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
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Lin Y, Hussain M, Avery PB, Qasim M, Fang D, Wang L. Volatiles from Plants Induced by Multiple Aphid Attacks Promote Conidial Performance of Lecanicillium lecanii. PLoS One 2016; 11:e0151844. [PMID: 26999795 PMCID: PMC4801321 DOI: 10.1371/journal.pone.0151844] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 03/04/2016] [Indexed: 11/18/2022] Open
Abstract
Herbivore-induced plant volatiles (HIPVs) are clues that help predatory insects search for food. The hypothesis that entomopathogenic fungi, which protect plants, benefit from the release of HIPVs was tested. The plant Arabidopsis thaliana was used as the source of HIPVs. The insect herbivore Lipaphis erysimi (Kaltenbach) was used as the inducer, and the fungal pathogen of the aphid Lecanicillium lecanii was exposed to HIPVs to test our hypothesis. When exposed to aphid-induced A. thaliana volatiles, the mortality of aphids pre-treated with a conidial suspension of L. lecanii, the conidial germination and the appressorial formation were significantly increased compared with the control. The decan-3-ol and 4-methylpentyl isothiocyanate that were detected in the headspace seemed to have positive and negative affection, respectively. Moreover, HIPVs generated from groups of eight aphids per plant promoted significantly increased conidial germination and appressorial formation compared with HIPVs from groups of one, two and four aphids per plant. Our results demonstrated that the pathogenicity of the entomopathogenic fungus L. lecanii was enhanced when exposed to HIPVs and that the HIPVs were affected by the number of insect herbivores that induced them.
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Affiliation(s)
- Yongwen Lin
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou, China
| | - Mubasher Hussain
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou, China
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou, China
| | - Pasco Bruce Avery
- Indian River Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, Fort Pierce, Florida, United States of America
| | - Muhammad Qasim
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou, China
| | - Dalin Fang
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou, China
| | - Liande Wang
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou, China
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Arthurs SP, Aristizábal LF, Avery PB. Evaluation of entomopathogenic fungi against chilli thrips, Scirtothrips dorsalis. J Insect Sci 2013; 13:31. [PMID: 23895429 PMCID: PMC3735053 DOI: 10.1673/031.013.3101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 07/07/2012] [Indexed: 06/02/2023]
Abstract
Commercial strains of entomopathogenic fungi were evaluated for control of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), an invasive pest of ornamental and vegetable plants in the Caribbean and southeastern United States. In laboratory assays, LC50 values against adult S. dorsalis were 5.1 × 10(4) CFU/mL for Beauveria bassiana GHA, with higher values 3.1 × 10(5) for Metarhizium brunneum F52 and 3.8 × 10(5) for Isaria fumosorosea Apopka 97. Second instars were comparatively less susceptible to all isolates, ostensibly due to moulting, with LC50 values of 1.1 × 10(8), 7.0 × 10(5), and 9.9 × 10(5) CFU/spores per mL for GHA, F52, and Apopka 97 strains, respectively. In greenhouse cages, compared with controls, three applications of mycoinsecticides and other biorational insecticides at 7 to 14 day intervals reduced overall S. dorsalis populations on pepper plants Capsicum annuum cv. California Wonder: spinosad reduced populations by 94-99%, M. brunneum F52 by 84-93%, B. bassiana GHA by 81-94%, I. fumosorosea PFR-97 by 62-66%, and different horticultural oils by 58-85%. The proportion of marketable fruit was significantly increased by M. brunneum F52, B. bassiana GHA, and 2% SuffOil-X treatments. Slightly lower levels of control were observed in nursery tests with ornamental rose shrubs, Rosa sp. Red Double Knock Out®, during hot sunny conditions. Four applications reduced thrips populations over 10 weeks: spinosad by an average of 91%, M. brunneum F52 by an average of 81%, B. bassiana GHA by an average of 62%, SuffOil-X by an average of 50%, and I. fumosorosea PFR-97 by an average of 44%. The data show that mycoinsecticides can be used in management strategies for low to moderate populations of S. dorsalis and provide resistance management tools for the limited number of insecticides that are effective against this pest.
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Affiliation(s)
- Steven Paul Arthurs
- Mid-Florida Research and Education Center, Department of Entomology and Nematology, University of Florida, IFAS, 2725 Binion Road, Apopka, FL 32703, USA
| | - Luis Fernando Aristizábal
- Mid-Florida Research and Education Center, Department of Entomology and Nematology, University of Florida, IFAS, 2725 Binion Road, Apopka, FL 32703, USA
| | - Pasco Bruce Avery
- Indian River Research and Education Center, University of Florida, Fort Pierce, Florida 34945, USA
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