Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis
Abstract The development of new biopesticides to control the western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is urgent due to resistance evolution to various control methods. We tested an air-dried non-live preparation of Chromobacterium species Panama (Csp_P), against multiple...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-22229-6 |
| _version_ | 1828316979024363520 |
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| author | Adriano E. Pereira Man P. Huynh Kyle J. Paddock José L. Ramirez Eric P. Caragata George Dimopoulos Hari B. Krishnan Sharon K. Schneider Kent S. Shelby Bruce E. Hibbard |
| author_facet | Adriano E. Pereira Man P. Huynh Kyle J. Paddock José L. Ramirez Eric P. Caragata George Dimopoulos Hari B. Krishnan Sharon K. Schneider Kent S. Shelby Bruce E. Hibbard |
| author_sort | Adriano E. Pereira |
| collection | DOAJ |
| description | Abstract The development of new biopesticides to control the western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is urgent due to resistance evolution to various control methods. We tested an air-dried non-live preparation of Chromobacterium species Panama (Csp_P), against multiple corn rootworm species, including Bt-resistant and -susceptible WCR strains, northern (NCR, D. barberi Smith & Lawrence), and southern corn rootworm (SCR, D. undecimpunctata howardi Barber), in diet toxicity assays. Our results documented that Csp_P was toxic to all three corn rootworms species based on lethal (LC50), effective (EC50), and molt inhibition concentration (MIC50). In general, toxicity of Csp_P was similar among all WCR strains and ~ 3-fold less toxic to NCR and SCR strains. Effective concentration (EC50) was also similar among WCR and SCR strains, and 5-7-fold higher in NCR strains. Molt inhibition (MIC50) was similar among all corn rootworm strains except NCR diapause strain that was 2.5–6-fold higher when compared to all other strains. There was no apparent cross-resistance between Csp_P and any of the currently available Bt proteins. Our results indicate that Csp_P formulation was effective at killing multiple corn rootworm strains including Bt-resistant WCR and could be developed as a potential new management tool for WCR control. |
| first_indexed | 2024-04-13T17:21:27Z |
| format | Article |
| id | doaj.art-5cffab2032274a508afcbb0ece934192 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-13T17:21:27Z |
| publishDate | 2022-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-5cffab2032274a508afcbb0ece9341922022-12-22T02:37:57ZengNature PortfolioScientific Reports2045-23222022-10-011211810.1038/s41598-022-22229-6Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensisAdriano E. Pereira0Man P. Huynh1Kyle J. Paddock2José L. Ramirez3Eric P. Caragata4George Dimopoulos5Hari B. Krishnan6Sharon K. Schneider7Kent S. Shelby8Bruce E. Hibbard9Plant Genetics Research Unit, USDA-ARSDivision of Plant Sciences and Technology, University of MissouriDivision of Plant Sciences and Technology, University of MissouriCrop Bioprotection Research, USDA-ARSBloomberg School of Public Health, Johns Hopkins UniversityBloomberg School of Public Health, Johns Hopkins UniversityPlant Genetics Research Unit, USDA-ARSNorth Central Agricultural Research Laboratory, USDA-ARSBiological Control Insect Research Laboratory, USDA-ARSPlant Genetics Research Unit, USDA-ARSAbstract The development of new biopesticides to control the western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is urgent due to resistance evolution to various control methods. We tested an air-dried non-live preparation of Chromobacterium species Panama (Csp_P), against multiple corn rootworm species, including Bt-resistant and -susceptible WCR strains, northern (NCR, D. barberi Smith & Lawrence), and southern corn rootworm (SCR, D. undecimpunctata howardi Barber), in diet toxicity assays. Our results documented that Csp_P was toxic to all three corn rootworms species based on lethal (LC50), effective (EC50), and molt inhibition concentration (MIC50). In general, toxicity of Csp_P was similar among all WCR strains and ~ 3-fold less toxic to NCR and SCR strains. Effective concentration (EC50) was also similar among WCR and SCR strains, and 5-7-fold higher in NCR strains. Molt inhibition (MIC50) was similar among all corn rootworm strains except NCR diapause strain that was 2.5–6-fold higher when compared to all other strains. There was no apparent cross-resistance between Csp_P and any of the currently available Bt proteins. Our results indicate that Csp_P formulation was effective at killing multiple corn rootworm strains including Bt-resistant WCR and could be developed as a potential new management tool for WCR control.https://doi.org/10.1038/s41598-022-22229-6 |
| spellingShingle | Adriano E. Pereira Man P. Huynh Kyle J. Paddock José L. Ramirez Eric P. Caragata George Dimopoulos Hari B. Krishnan Sharon K. Schneider Kent S. Shelby Bruce E. Hibbard Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis Scientific Reports |
| title | Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis |
| title_full | Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis |
| title_fullStr | Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis |
| title_full_unstemmed | Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis |
| title_short | Chromobacterium Csp_P biopesticide is toxic to larvae of three Diabrotica species including strains resistant to Bacillus thuringiensis |
| title_sort | chromobacterium csp p biopesticide is toxic to larvae of three diabrotica species including strains resistant to bacillus thuringiensis |
| url | https://doi.org/10.1038/s41598-022-22229-6 |
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