Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings

Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings

Tropospheric ozone is an abiotic stress of increasing importance in the context of global climate change. This greenhouse gas is a potent phytotoxic molecule with demonstrated negative effects on crop yield and natural ecosystems. Recently, oxidative stress has been proposed as a mechanism that could regulate the interaction between cool-season grasses and Epichloë endophytes. We hypothesized that exposure of Lolium multiflorum plants, hosting endophytes to an ozone-polluted environment at different ontogenetic phases, would impact the trans-generational dynamics of the vertically transmitted fungal symbiont. Here, we found that the ozone-induced stress on the mother plants did not affect the endophyte vertical transmission but it impaired the persistence of the fungus in the seed exposed to artificial ageing. Endophyte longevity in seed was reduced by exposure of the mother plant to ozone. Although ozone exposure did not influence either the endophyte mycelial concentration or their compound defences (loline alkaloids), a positive correlation was observed between host fitness and the concentration of endophyte-derived defence compounds. This suggests that fungal defences in grass seeds were not all produced in situ but remobilized from the vegetative tissues. Our study reveals ozone transgenerational effects on the persistence of a beneficial symbiont in a host grass.

Saved in:
Bibliographic Details
Main Authors: Ueno, Andrea Celeste, Gundel, Pedro Emilio, Ghersa, Claudio Marco, Demkura, Patricia Verónica, Card, Stuart D., Mace, Wade J., Martínez Ghersa, María Alejandra
Format: Texto biblioteca
Language:eng
Subjects:ALKALOID, DEFENSIVE MUTUALISM, FUNGAL ENDOPHYTE, GRASS, OZONE, SYMBIOSIS, ,
Online Access:http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54534
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
Tags: Add Tag
No Tags, Be the first to tag this record!
id KOHA-OAI-AGRO:54534
record_format koha
spelling KOHA-OAI-AGRO:545342022-07-13T12:18:37Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54534http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGOntogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settingsUeno, Andrea CelesteGundel, Pedro EmilioGhersa, Claudio MarcoDemkura, Patricia VerónicaCard, Stuart D.Mace, Wade J.Martínez Ghersa, María Alejandratextengapplication/pdfTropospheric ozone is an abiotic stress of increasing importance in the context of global climate change. This greenhouse gas is a potent phytotoxic molecule with demonstrated negative effects on crop yield and natural ecosystems. Recently, oxidative stress has been proposed as a mechanism that could regulate the interaction between cool-season grasses and Epichloë endophytes. We hypothesized that exposure of Lolium multiflorum plants, hosting endophytes to an ozone-polluted environment at different ontogenetic phases, would impact the trans-generational dynamics of the vertically transmitted fungal symbiont. Here, we found that the ozone-induced stress on the mother plants did not affect the endophyte vertical transmission but it impaired the persistence of the fungus in the seed exposed to artificial ageing. Endophyte longevity in seed was reduced by exposure of the mother plant to ozone. Although ozone exposure did not influence either the endophyte mycelial concentration or their compound defences (loline alkaloids), a positive correlation was observed between host fitness and the concentration of endophyte-derived defence compounds. This suggests that fungal defences in grass seeds were not all produced in situ but remobilized from the vegetative tissues. Our study reveals ozone transgenerational effects on the persistence of a beneficial symbiont in a host grass.Tropospheric ozone is an abiotic stress of increasing importance in the context of global climate change. This greenhouse gas is a potent phytotoxic molecule with demonstrated negative effects on crop yield and natural ecosystems. Recently, oxidative stress has been proposed as a mechanism that could regulate the interaction between cool-season grasses and Epichloë endophytes. We hypothesized that exposure of Lolium multiflorum plants, hosting endophytes to an ozone-polluted environment at different ontogenetic phases, would impact the trans-generational dynamics of the vertically transmitted fungal symbiont. Here, we found that the ozone-induced stress on the mother plants did not affect the endophyte vertical transmission but it impaired the persistence of the fungus in the seed exposed to artificial ageing. Endophyte longevity in seed was reduced by exposure of the mother plant to ozone. Although ozone exposure did not influence either the endophyte mycelial concentration or their compound defences (loline alkaloids), a positive correlation was observed between host fitness and the concentration of endophyte-derived defence compounds. This suggests that fungal defences in grass seeds were not all produced in situ but remobilized from the vegetative tissues. Our study reveals ozone transgenerational effects on the persistence of a beneficial symbiont in a host grass.ALKALOIDDEFENSIVE MUTUALISMFUNGAL ENDOPHYTEGRASSOZONESYMBIOSISPlant, cell and environment
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic ALKALOID
DEFENSIVE MUTUALISM
FUNGAL ENDOPHYTE
GRASS
OZONE
SYMBIOSIS

ALKALOID
DEFENSIVE MUTUALISM
FUNGAL ENDOPHYTE
GRASS
OZONE
SYMBIOSIS
spellingShingle ALKALOID
DEFENSIVE MUTUALISM
FUNGAL ENDOPHYTE
GRASS
OZONE
SYMBIOSIS

ALKALOID
DEFENSIVE MUTUALISM
FUNGAL ENDOPHYTE
GRASS
OZONE
SYMBIOSIS
Ueno, Andrea Celeste
Gundel, Pedro Emilio
Ghersa, Claudio Marco
Demkura, Patricia Verónica
Card, Stuart D.
Mace, Wade J.
Martínez Ghersa, María Alejandra
Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
description Tropospheric ozone is an abiotic stress of increasing importance in the context of global climate change. This greenhouse gas is a potent phytotoxic molecule with demonstrated negative effects on crop yield and natural ecosystems. Recently, oxidative stress has been proposed as a mechanism that could regulate the interaction between cool-season grasses and Epichloë endophytes. We hypothesized that exposure of Lolium multiflorum plants, hosting endophytes to an ozone-polluted environment at different ontogenetic phases, would impact the trans-generational dynamics of the vertically transmitted fungal symbiont. Here, we found that the ozone-induced stress on the mother plants did not affect the endophyte vertical transmission but it impaired the persistence of the fungus in the seed exposed to artificial ageing. Endophyte longevity in seed was reduced by exposure of the mother plant to ozone. Although ozone exposure did not influence either the endophyte mycelial concentration or their compound defences (loline alkaloids), a positive correlation was observed between host fitness and the concentration of endophyte-derived defence compounds. This suggests that fungal defences in grass seeds were not all produced in situ but remobilized from the vegetative tissues. Our study reveals ozone transgenerational effects on the persistence of a beneficial symbiont in a host grass.
format Texto
topic_facet
ALKALOID
DEFENSIVE MUTUALISM
FUNGAL ENDOPHYTE
GRASS
OZONE
SYMBIOSIS
author Ueno, Andrea Celeste
Gundel, Pedro Emilio
Ghersa, Claudio Marco
Demkura, Patricia Verónica
Card, Stuart D.
Mace, Wade J.
Martínez Ghersa, María Alejandra
author_facet Ueno, Andrea Celeste
Gundel, Pedro Emilio
Ghersa, Claudio Marco
Demkura, Patricia Verónica
Card, Stuart D.
Mace, Wade J.
Martínez Ghersa, María Alejandra
author_sort Ueno, Andrea Celeste
title Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
title_short Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
title_full Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
title_fullStr Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
title_full_unstemmed Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
title_sort ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54534
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
work_keys_str_mv AT uenoandreaceleste ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
AT gundelpedroemilio ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
AT ghersaclaudiomarco ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
AT demkurapatriciaveronica ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
AT cardstuartd ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
AT macewadej ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
AT martinezghersamariaalejandra ontogeneticandtransgenerationaldynamicsofaverticallytransmittedfungalsymbiontinanannualhostplantinozonepollutedsettings
_version_ 1756210693666766848

Similar Items