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Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
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Khalifa Eltayef,
Ian Baxter,
Arben Myrta,
James Bull ,
Tariq Butt
Biological Control, Volume: 152, Start page: 104472
Swansea University Authors:
Salim Khoja , Khalifa Eltayef, James Bull , Tariq Butt
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DOI (Published version): 10.1016/j.biocontrol.2020.104472
Abstract
Root knot nematodes (RKNs) cause significant crop losses. Although RKNs and entomopathogenic fungi, such as Metarhizium brunneum, are associated with plant roots, very little is known about the interactions between these two organisms. This study showed that conidia and VOCs of Me. brunneum influenc...
| Published in: | Biological Control |
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| ISSN: | 1049-9644 |
| Published: |
Elsevier BV
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa55599 |
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| Abstract: |
Root knot nematodes (RKNs) cause significant crop losses. Although RKNs and entomopathogenic fungi, such as Metarhizium brunneum, are associated with plant roots, very little is known about the interactions between these two organisms. This study showed that conidia and VOCs of Me. brunneum influenced the behaviour of M. hapla. The response was dependent on the fungal strain, VOC, concentration of both VOC and conidia, and time. Tomatoes planted in soil treated with the highest doses of conidia usually had a higher number of nematodes than untreated control plants. This was particularly obvious for Me. brunneum strain ARSEF 4556, 7 and 14-days post-treatment. The VOCs, 1-octen-3-ol and 3-octanone, lured M. hapla to plants when used at low doses and repelled them at high doses. In Petri dish assays. the VOCs 1-octen-3-ol and 3-octanone, caused 100% mortality of M. hapla at the highest dose tested (20µl). Very few live M. hapla were recovered from soil treated with the VOC 1-octen-3-ol, especially at the highest doses tested. |
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| Keywords: |
Plant parasitic nematodes, Fungal volatiles, Metarhizium, Repellents, Attractants |
| College: |
Faculty of Science and Engineering |
| Funders: |
This work was supported by a BBSRC NPRONET grant BIV021 and the Impact 337Acceleration Account grant EP/R511614/1 for Swansea University from the UK 338Engineering and Physical Sciences Research Council (EPSRC). The authors also 339thank Certis Europe BV for funding the research. |
| Start Page: |
104472 |