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 coul...

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Detalles Bibliográficos
Otros Autores: Ueno, Andrea Celeste, Gundel, Pedro Emilio, Ghersa, Claudio Marco, Demkura, Patricia Verónica, Card, Stuart D., Mace, Wade J., Martínez Ghersa, María Alejandra
Formato: Artículo
Lenguaje:Inglés
Materias:
ALKALOID
DEFENSIVE MUTUALISM
FUNGAL ENDOPHYTE
GRASS
OZONE
SYMBIOSIS
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2020ueno1.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Ontogenetic and trans - generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone - polluted settings 
520 |a 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. 
650 |2 Agrovoc  |9 26 
653 |a ALKALOID 
653 |a DEFENSIVE MUTUALISM 
653 |a FUNGAL ENDOPHYTE 
653 |a GRASS 
653 |a OZONE 
653 |a SYMBIOSIS 
700 1 |9 34719  |a Ueno, Andrea Celeste  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
700 1 |a Gundel, Pedro Emilio  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 28667 
700 1 |a Ghersa, Claudio Marco  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 7549 
700 1 |a Demkura, Patricia Verónica  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 35030 
700 1 |a Card, Stuart D.  |u Forage Science, AgResearch Limited, Grasslands Research Centre. New Zealand.  |9 67697 
700 1 |a Mace, Wade J.  |u Forage Science, AgResearch Limited, Grasslands Research Centre. New Zealand.  |9 67698 
700 1 |a Martínez Ghersa, María Alejandra  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 7113 
773 0 |t Plant, cell and environment  |g Vol.43, no.10 (2020), p.2540–2550, grafs.  |w SECS000149 
856 |f 2020ueno1  |i En reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2020ueno1.pdf  |x ARTI202204 
856 |u https://www.wiley.com/  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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