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Identification of novel aphid‐killing bacteria to protect plants
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Paliwal, Deepa, Hamilton, Amanda J., Barrett, Glyn A., Alberti, Fabrizio, Emden, Helmut, Monteil, Caroline L., Mauchline, Tim H., Nauen, Ralf, Wagstaff, Carol, Bass, Chris and Jackson, Robert W. (2022) Identification of novel aphid‐killing bacteria to protect plants. Microbial Biotechnology, 15 (4). pp. 1203-1220. doi:10.1111/1751-7915.13902 ISSN 1751-7907.
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WRAP-identification-novel-aphid‐killing-bacteria-protect-plants-Alberti-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (422Kb) | Preview |
Official URL: https://doi.org/10.1111/1751-7915.13902
Abstract
Aphids, including the peach-potato aphid, Myzus persicae, are major insect pests of agriculture and horticulture, and aphid control measures are limited. There is therefore an urgent need to develop alternative and more sustainable means of control. Recent studies have shown that environmental microbes have varying abilities to kill insects. We screened a range of environmental bacteria isolates for their abilities to kill target aphid species. Tests demonstrated the killing aptitude of these bacteria against six aphid genera (including Myzus persicae). No single bacterial strain was identified that was consistently toxic to insecticide-resistant aphid clones than susceptible clones, suggesting resistance to chemicals is not strongly correlated with bacterial challenge. Pseudomonas fluorescens PpR24 proved the most toxic to almost all aphid clones whilst exhibiting the ability to survive for over three weeks on three plant species at populations of 5–6 log CFU cm−2 leaf. Application of PpR24 to plants immediately prior to introducing aphids onto the plants led to a 68%, 57% and 69% reduction in aphid populations, after 21 days, on Capsicum annuum, Arabidopsis thaliana and Beta vulgaris respectively. Together, these findings provide new insights into aphid susceptibility to bacterial infection with the aim of utilizing bacteria as effective biocontrol agents.
| Item Type: | Journal Article | ||||||||
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| Subjects: | S Agriculture > SB Plant culture | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
| SWORD Depositor: | Library Publications Router | ||||||||
| Library of Congress Subject Headings (LCSH): | Aphids -- Host plants, Aphids -- Biological control, Field crops -- Diseases and pests -- Control | ||||||||
| Journal or Publication Title: | Microbial Biotechnology | ||||||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||
| ISSN: | 1751-7907 | ||||||||
| Official Date: | April 2022 | ||||||||
| Dates: |
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| Volume: | 15 | ||||||||
| Number: | 4 | ||||||||
| Page Range: | pp. 1203-1220 | ||||||||
| DOI: | 10.1111/1751-7915.13902 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 4 March 2022 | ||||||||
| Date of first compliant Open Access: | 7 March 2022 | ||||||||
| RIOXX Funder/Project Grant: |
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