An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases

An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases

Show other versions (1)

Plants harbor a wide diversity of microorganisms in their tissues. Some of them have a long co-evolutionary history with their hosts, likely playing a pivotal role in regulating the plant interaction with other microbes such as pathogens. Some cool-season grasses are symbiotic with Epichloe fungal endophytes that grow symptomless and systemically in aboveground tissues. Among the many benefits that have been ascribed to endophytes, their role in mediating plant interactions with pathogens has been scarcely developed. Here, we explored the effects of Epichloe fungal endophytes on the interaction of host grasses with fungal pathogens. We made a meta-analysis that covered a total of 18 host grass species, 11 fungal endophyte species, and 22 fungal pathogen species. We observed endophyte-mediated negative effects on pathogens in vitro and in planta. Endophyte negative effects on pathogens were apparent not only in laboratory but also in greenhouse and field experiments. Epichloe fungal endophytes had negative effects on pathogen growth and spores’ germination. On living plants, endophytes reduced both severity and incidence of the disease as well as colonization and subsequent infection of seeds. Symbiosis with endophytes showed an inhibitory effect on debilitator and killer pathogens, but not on castrators, and this effect did not differ among biotrophic or necrotrophic lifestyles. We found that this protection can be direct through the production of fungistatic compounds, the competition for a common resource, or the induction of plant defenses, and indirect associated with endophyte-generated changes in the abiotic or the biotic environment. Several mechanisms operate simultaneously and contribute differentially to the reduction of disease within grass populations.

Saved in:
Bibliographic Details
Main Authors: Pérez, Luis Ignacio, Gundel, Pedro Emilio, Zabalgogeazcoa, Iñigo, Omacini, Marina
Format: Texto biblioteca
Language:eng
Subjects:DISEASE ECOLOGY, ENDOPHYTE, META - ANALYSIS, MUTUALISM, PATHOGEN, SYMBIOSIS, ,
Online Access:http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54482
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:54482
record_format koha
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 DISEASE ECOLOGY
ENDOPHYTE
META - ANALYSIS
MUTUALISM
PATHOGEN
SYMBIOSIS

DISEASE ECOLOGY
ENDOPHYTE
META - ANALYSIS
MUTUALISM
PATHOGEN
SYMBIOSIS
spellingShingle DISEASE ECOLOGY
ENDOPHYTE
META - ANALYSIS
MUTUALISM
PATHOGEN
SYMBIOSIS

DISEASE ECOLOGY
ENDOPHYTE
META - ANALYSIS
MUTUALISM
PATHOGEN
SYMBIOSIS
Pérez, Luis Ignacio
Gundel, Pedro Emilio
Zabalgogeazcoa, Iñigo
Omacini, Marina
An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases
description Plants harbor a wide diversity of microorganisms in their tissues. Some of them have a long co-evolutionary history with their hosts, likely playing a pivotal role in regulating the plant interaction with other microbes such as pathogens. Some cool-season grasses are symbiotic with Epichloe fungal endophytes that grow symptomless and systemically in aboveground tissues. Among the many benefits that have been ascribed to endophytes, their role in mediating plant interactions with pathogens has been scarcely developed. Here, we explored the effects of Epichloe fungal endophytes on the interaction of host grasses with fungal pathogens. We made a meta-analysis that covered a total of 18 host grass species, 11 fungal endophyte species, and 22 fungal pathogen species. We observed endophyte-mediated negative effects on pathogens in vitro and in planta. Endophyte negative effects on pathogens were apparent not only in laboratory but also in greenhouse and field experiments. Epichloe fungal endophytes had negative effects on pathogen growth and spores’ germination. On living plants, endophytes reduced both severity and incidence of the disease as well as colonization and subsequent infection of seeds. Symbiosis with endophytes showed an inhibitory effect on debilitator and killer pathogens, but not on castrators, and this effect did not differ among biotrophic or necrotrophic lifestyles. We found that this protection can be direct through the production of fungistatic compounds, the competition for a common resource, or the induction of plant defenses, and indirect associated with endophyte-generated changes in the abiotic or the biotic environment. Several mechanisms operate simultaneously and contribute differentially to the reduction of disease within grass populations.
format Texto
topic_facet
DISEASE ECOLOGY
ENDOPHYTE
META - ANALYSIS
MUTUALISM
PATHOGEN
SYMBIOSIS
author Pérez, Luis Ignacio
Gundel, Pedro Emilio
Zabalgogeazcoa, Iñigo
Omacini, Marina
author_facet Pérez, Luis Ignacio
Gundel, Pedro Emilio
Zabalgogeazcoa, Iñigo
Omacini, Marina
author_sort Pérez, Luis Ignacio
title An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases
title_short An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases
title_full An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases
title_fullStr An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases
title_full_unstemmed An ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseases
title_sort ecological framework for understanding the roles of epichloe endophytes on plant defenses against fungal diseases
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54482
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 perezluisignacio anecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT gundelpedroemilio anecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT zabalgogeazcoainigo anecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT omacinimarina anecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT perezluisignacio ecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT gundelpedroemilio ecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT zabalgogeazcoainigo ecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
AT omacinimarina ecologicalframeworkforunderstandingtherolesofepichloeendophytesonplantdefensesagainstfungaldiseases
_version_ 1787218113824030720
spelling KOHA-OAI-AGRO:544822023-11-22T13:01:56Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54482http://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=AAGAn ecological framework for understanding the roles of Epichloe endophytes on plant defenses against fungal diseasesPérez, Luis IgnacioGundel, Pedro EmilioZabalgogeazcoa, IñigoOmacini, Marinatextengapplication/pdfPlants harbor a wide diversity of microorganisms in their tissues. Some of them have a long co-evolutionary history with their hosts, likely playing a pivotal role in regulating the plant interaction with other microbes such as pathogens. Some cool-season grasses are symbiotic with Epichloe fungal endophytes that grow symptomless and systemically in aboveground tissues. Among the many benefits that have been ascribed to endophytes, their role in mediating plant interactions with pathogens has been scarcely developed. Here, we explored the effects of Epichloe fungal endophytes on the interaction of host grasses with fungal pathogens. We made a meta-analysis that covered a total of 18 host grass species, 11 fungal endophyte species, and 22 fungal pathogen species. We observed endophyte-mediated negative effects on pathogens in vitro and in planta. Endophyte negative effects on pathogens were apparent not only in laboratory but also in greenhouse and field experiments. Epichloe fungal endophytes had negative effects on pathogen growth and spores’ germination. On living plants, endophytes reduced both severity and incidence of the disease as well as colonization and subsequent infection of seeds. Symbiosis with endophytes showed an inhibitory effect on debilitator and killer pathogens, but not on castrators, and this effect did not differ among biotrophic or necrotrophic lifestyles. We found that this protection can be direct through the production of fungistatic compounds, the competition for a common resource, or the induction of plant defenses, and indirect associated with endophyte-generated changes in the abiotic or the biotic environment. Several mechanisms operate simultaneously and contribute differentially to the reduction of disease within grass populations.Plants harbor a wide diversity of microorganisms in their tissues. Some of them have a long co-evolutionary history with their hosts, likely playing a pivotal role in regulating the plant interaction with other microbes such as pathogens. Some cool-season grasses are symbiotic with Epichloe fungal endophytes that grow symptomless and systemically in aboveground tissues. Among the many benefits that have been ascribed to endophytes, their role in mediating plant interactions with pathogens has been scarcely developed. Here, we explored the effects of Epichloe fungal endophytes on the interaction of host grasses with fungal pathogens. We made a meta-analysis that covered a total of 18 host grass species, 11 fungal endophyte species, and 22 fungal pathogen species. We observed endophyte-mediated negative effects on pathogens in vitro and in planta. Endophyte negative effects on pathogens were apparent not only in laboratory but also in greenhouse and field experiments. Epichloe fungal endophytes had negative effects on pathogen growth and spores’ germination. On living plants, endophytes reduced both severity and incidence of the disease as well as colonization and subsequent infection of seeds. Symbiosis with endophytes showed an inhibitory effect on debilitator and killer pathogens, but not on castrators, and this effect did not differ among biotrophic or necrotrophic lifestyles. We found that this protection can be direct through the production of fungistatic compounds, the competition for a common resource, or the induction of plant defenses, and indirect associated with endophyte-generated changes in the abiotic or the biotic environment. Several mechanisms operate simultaneously and contribute differentially to the reduction of disease within grass populations.DISEASE ECOLOGYENDOPHYTEMETA - ANALYSISMUTUALISMPATHOGENSYMBIOSISFungal biology reviews

Similar Items