Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Khoja, Salim, Eltayef, Khalifa M., Baxter, Ian, Myrta, Arben, Bull, James C., Butt, Tariq
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Inc 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7737096/
https://www.ncbi.nlm.nih.gov/pubmed/33390683
http://dx.doi.org/10.1016/j.biocontrol.2020.104472
_version_ 1783622885345067008
author Khoja, Salim
Eltayef, Khalifa M.
Baxter, Ian
Myrta, Arben
Bull, James C.
Butt, Tariq
author_facet Khoja, Salim
Eltayef, Khalifa M.
Baxter, Ian
Myrta, Arben
Bull, James C.
Butt, Tariq
author_sort Khoja, Salim
collection PubMed
description 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 (20 µl). Very few live M. hapla were recovered from soil treated with the VOC 1-octen-3-ol, especially at the highest doses tested.
format Online
Article
Text
id pubmed-7737096
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Elsevier Inc
record_format MEDLINE/PubMed
spelling pubmed-77370962021-01-01 Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes Khoja, Salim Eltayef, Khalifa M. Baxter, Ian Myrta, Arben Bull, James C. Butt, Tariq Biol Control Article 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 (20 µl). Very few live M. hapla were recovered from soil treated with the VOC 1-octen-3-ol, especially at the highest doses tested. Elsevier Inc 2021-01 /pmc/articles/PMC7737096/ /pubmed/33390683 http://dx.doi.org/10.1016/j.biocontrol.2020.104472 Text en © 2020 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khoja, Salim
Eltayef, Khalifa M.
Baxter, Ian
Myrta, Arben
Bull, James C.
Butt, Tariq
Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
title Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
title_full Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
title_fullStr Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
title_full_unstemmed Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
title_short Volatiles of the entomopathogenic fungus, Metarhizium brunneum, attract and kill plant parasitic nematodes
title_sort volatiles of the entomopathogenic fungus, metarhizium brunneum, attract and kill plant parasitic nematodes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7737096/
https://www.ncbi.nlm.nih.gov/pubmed/33390683
http://dx.doi.org/10.1016/j.biocontrol.2020.104472
work_keys_str_mv AT khojasalim volatilesoftheentomopathogenicfungusmetarhiziumbrunneumattractandkillplantparasiticnematodes
AT eltayefkhalifam volatilesoftheentomopathogenicfungusmetarhiziumbrunneumattractandkillplantparasiticnematodes
AT baxterian volatilesoftheentomopathogenicfungusmetarhiziumbrunneumattractandkillplantparasiticnematodes
AT myrtaarben volatilesoftheentomopathogenicfungusmetarhiziumbrunneumattractandkillplantparasiticnematodes
AT bulljamesc volatilesoftheentomopathogenicfungusmetarhiziumbrunneumattractandkillplantparasiticnematodes
AT butttariq volatilesoftheentomopathogenicfungusmetarhiziumbrunneumattractandkillplantparasiticnematodes