Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans

Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans

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Fil: Bastías, Daniel A. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.

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Main Authors: Bastías, Daniel A., Martínez Ghersa, María Alejandra, Newman, Jonathan A., Card, Stuart D., Mace, Wade J., Gundel, Pedro Emilio
Format: article biblioteca
Language:eng
Subjects:ALKALOIDS, BENEFICIAL MICROORGANISMS, ENDOPHYTE SYMBIOSIS, EPICHLOE FUNGAL ENDOPHYTES, PLANT DEFENCES, SALICYLIC ACID, PLANT-HERBIVORE INTERACTION,
Online Access:http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2019bastias
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spelling snrd:2019bastias2021-10-15T16:56:07Z Bastías, Daniel A. Martínez Ghersa, María Alejandra Newman, Jonathan A. Card, Stuart D. Mace, Wade J. Gundel, Pedro Emilio 2019 Fil: Bastías, Daniel A. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Fil: Martínez Ghersa, María Alejandra. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Fil: Newman, Jonathan A. Wilfrid Laurier University. Department of Biology. Waterloo, Ontario, Canada. Fil: Card, Stuart D. Forage Science. AgResearch Limited. Grasslands Research Centre. Palmerston North, New Zealand. Fil: Mace, Wade J. Forage Science. AgResearch Limited. Grasslands Research Centre. Palmerston North, New Zealand. Fil: Gundel, Pedro Emilio. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Background. Plants possess a sophisticated immune system to defend from herbivores. These defence responses are regulated by plant hormones including salicylic acid (SA) and jasmonic acid (JA). Sometimes, plant defences can be complemented by the presence of symbiotic microorganisms. A remarkable example of this are grasses establishing symbiotic associations with Epichloë fungal endophytes. We studied the level of resistance provided by the grass' defence hormones, and that provided by Epichloë fungal endophytes, against an introduced herbivore aphid. These fungi protect their hosts against herbivores by producing bioactive alkaloids. We hypothesized that either the presence of fungal endophytes or the induction of the plant salicylic acid (SA) defence pathway would enhance the level of resistance of the grass to the aphid. Methods. Lolium multiflorum plants, with and without the fungal endophyte Epichloë occultans, were subjected to an exogenous application of SA followed by a challenge with the aphid, Sipha maydis. Results. Our results indicate that neither the presence of E. occultans nor the induction of the plant's SA pathway regulate S. maydis populations. However, endophytesymbiotic plants may have been more tolerant to the aphid feeding because these plants produced more aboveground biomass. We suggest that this insect insensitivity could be explained by a combination between the ineffectiveness of the specific alkaloids produced by E. occultans in controlling S. maydis aphids and the capacity of this herbivore to deal with hormone-dependent defences of L. multiflorum. tbls., grafs. application/pdf doi:10.7717/peerj.8257 issn:2167-8359 http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2019bastias eng info:eu-repo/semantics/openAccess openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 PeerJ Vol.7, e8257 e8257 https://peerj.com ALKALOIDS BENEFICIAL MICROORGANISMS ENDOPHYTE SYMBIOSIS EPICHLOE FUNGAL ENDOPHYTES PLANT DEFENCES SALICYLIC ACID PLANT-HERBIVORE INTERACTION Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans article info:eu-repo/semantics/article info:ar-repo/semantics/artículo publishedVersion info:eu-repo/semantics/publishedVersion
institution UBA
collection DSpace
country Argentina
countrycode AR
component Bibliográfico
access En linea
databasecode dig-ubafa
tag biblioteca
region America del Sur
libraryname Biblioteca Facultad de Agronomía
language eng
topic ALKALOIDS
BENEFICIAL MICROORGANISMS
ENDOPHYTE SYMBIOSIS
EPICHLOE FUNGAL ENDOPHYTES
PLANT DEFENCES
SALICYLIC ACID
PLANT-HERBIVORE INTERACTION
ALKALOIDS
BENEFICIAL MICROORGANISMS
ENDOPHYTE SYMBIOSIS
EPICHLOE FUNGAL ENDOPHYTES
PLANT DEFENCES
SALICYLIC ACID
PLANT-HERBIVORE INTERACTION
spellingShingle ALKALOIDS
BENEFICIAL MICROORGANISMS
ENDOPHYTE SYMBIOSIS
EPICHLOE FUNGAL ENDOPHYTES
PLANT DEFENCES
SALICYLIC ACID
PLANT-HERBIVORE INTERACTION
ALKALOIDS
BENEFICIAL MICROORGANISMS
ENDOPHYTE SYMBIOSIS
EPICHLOE FUNGAL ENDOPHYTES
PLANT DEFENCES
SALICYLIC ACID
PLANT-HERBIVORE INTERACTION
Bastías, Daniel A.
Martínez Ghersa, María Alejandra
Newman, Jonathan A.
Card, Stuart D.
Mace, Wade J.
Gundel, Pedro Emilio
Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans
description Fil: Bastías, Daniel A. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
format article
topic_facet ALKALOIDS
BENEFICIAL MICROORGANISMS
ENDOPHYTE SYMBIOSIS
EPICHLOE FUNGAL ENDOPHYTES
PLANT DEFENCES
SALICYLIC ACID
PLANT-HERBIVORE INTERACTION
author Bastías, Daniel A.
Martínez Ghersa, María Alejandra
Newman, Jonathan A.
Card, Stuart D.
Mace, Wade J.
Gundel, Pedro Emilio
author_facet Bastías, Daniel A.
Martínez Ghersa, María Alejandra
Newman, Jonathan A.
Card, Stuart D.
Mace, Wade J.
Gundel, Pedro Emilio
author_sort Bastías, Daniel A.
title Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans
title_short Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans
title_full Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans
title_fullStr Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans
title_full_unstemmed Sipha maydis sensitivity to defences of Lolium multiflorum and its endophytic fungus Epichloë occultans
title_sort sipha maydis sensitivity to defences of lolium multiflorum and its endophytic fungus epichloë occultans
url http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2019bastias
work_keys_str_mv AT bastiasdaniela siphamaydissensitivitytodefencesofloliummultiflorumanditsendophyticfungusepichloeoccultans
AT martinezghersamariaalejandra siphamaydissensitivitytodefencesofloliummultiflorumanditsendophyticfungusepichloeoccultans
AT newmanjonathana siphamaydissensitivitytodefencesofloliummultiflorumanditsendophyticfungusepichloeoccultans
AT cardstuartd siphamaydissensitivitytodefencesofloliummultiflorumanditsendophyticfungusepichloeoccultans
AT macewadej siphamaydissensitivitytodefencesofloliummultiflorumanditsendophyticfungusepichloeoccultans
AT gundelpedroemilio siphamaydissensitivitytodefencesofloliummultiflorumanditsendophyticfungusepichloeoccultans
_version_ 1819030671444672512

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