The negative effect of a vertically - transmitted fungal endophyte on seed longevity is stronger than that of ozone transgenerational effect

The transition from mother plant seed production to seedlings recruitment is critical for annual plant species but also for vertically transmitted microbial symbionts. Evidence indicates that microbial symbionts play important roles in plant response to environmental changes. However, their role in...

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Detalles Bibliográficos
Otros Autores: Ueno, Andrea Celeste, Gundel, Pedro Emilio, Seal, Charlotte E., Ghersa, Claudio Marco, Martínez Ghersa, María Alejandra
Formato: Artículo
Lenguaje:Inglés
Materias:
LOLIUM MULTIFLORUM
ITALIAN RYEGRASS
EPICHLOË OCCULTANS
MATERNAL EFFECT
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2020ueno.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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024 |a 10.1016/j.envexpbot.2020.104037 
040 |a AR-BaUFA  |c AR-BaUFA 
245 1 0 |a The negative effect of a vertically - transmitted fungal endophyte on seed longevity is stronger than that of ozone transgenerational effect 
520 |a The transition from mother plant seed production to seedlings recruitment is critical for annual plant species but also for vertically transmitted microbial symbionts. Evidence indicates that microbial symbionts play important roles in plant response to environmental changes. However, their role in plant facing gaseous tropospheric pollutants such as the highly reactive and phytotoxic ozone, have been scarcely studied. Here, we experimentally tested the consequences of maternal plant exposure to ozone on the longevity of Lolium mutiflorum seeds mediated by a vertically-transmitted fungal endophyte (Epichloë occultans). Seeds were produced by mother plants exposed to contrasting levels of ozone (low and high concentrations) in two phases of the life cycle (vegetative and reproductive). We first characterized the consequences of plant exposure to ozone on the state of the antioxidant glutathione in the seeds. Then, we examined viability dynamics of the seeds through an accelerated ageing trial and followed the physiological variables seed water content (SWC) and electrical conductivity (EC). Irrespectively of maternal ozone, seeds produced by endophyte-symbiotic plants presented higher contents of the oxidised form of glutathione. In the same direction, the fungal endophyte presence was associated with a dramatic reduction in seed longevity. The SWC was higher in endophyte-symbiotic seeds that in endophyte-free seeds. As time under accelerated ageing condition advanced, EC increased more in endophyte-symbiotic seeds than in endophyte-free seeds. Mother plant exposure to ozone tended to have a negative synergistic effect with the endophyte symbiosis. Ozone transgenerational effect was not detected on endophyte-free seeds. Our work contributes to understand the transgenerational effects of vertically transmitted fungal endophytes in plants in response to a currently important factor of stress. 
650 |2 Agrovoc  |9 26 
653 |a LOLIUM MULTIFLORUM 
653 |a ITALIAN RYEGRASS 
653 |a EPICHLOË OCCULTANS 
653 |a MATERNAL EFFECT 
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.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina. 
700 1 |9 28667  |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.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina. 
700 1 |a Seal, Charlotte E.  |u Royal Botanic Gardens. Department of Comparative Plant and Fungal Biology,. Ardingly, West Sussex, UK.  |9 68287 
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.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina.  |9 7549 
700 1 |9 7113  |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.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina. 
773 |t Environmental and Experimental Botany  |g Vol.175 (2020), art.104037, 8 p., tbls., grafs. 
856 |f 2020ueno  |i En reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2020ueno.pdf  |x ARTI202103 
856 |u https://www.elsevier.com/  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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