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Descripción
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| The fungal endophyte PRB110 stablishes a mutualistic interaction with Arabidopsis thaliana, promoting plant growth and silique production under phosphate (Pi) starvation. Until now, this interaction had only been observed in nature in Pi poor soils of Central Spain. In this work, we have detected PRB110 in 38% of the sampled Arabidopsis plants from a wild population at North Carolina (U.S.A.), isolating new strains from different surface sterilised plant tissues. Retrotransposon-Microsatellite Amplified Polymorphism analyses including several Spanish and European strains showed different haplotypes, three of which were only found in American isolates. Four PRB110 American strains and two Spanish strains were co-cultivated with Arabidopsis at sufficient and starving Pi concentrations. Results showed that PRB110 strains displayed a similar behaviour, increasing the fresh weight of the plant both under sufficient and starving Pi conditions. Moreover, the expression of the gene Pht1;3, involved in plant Pi uptake, was upregulated in Pi starving conditions in plants treated with all the PRB110 strains. In a different assay, both the American and the Spanish strains increased the number of siliques produced by Arabidopsis plants grown in a poor-nutrient soil. These results indicate that the beneficial effect of PRB110 in Arabidopsis is independent of the geographical origin of the isolates. | |
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Internacional
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Si |
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Nombre congreso
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IS-MPMI XVIII Congress |
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Tipo de participación
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960 |
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Lugar del congreso
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Glasgow, Reino Unido |
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Revisores
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Si |
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ISBN o ISSN
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000-00-0000-000-0 |
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DOI
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Fecha inicio congreso
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14/07/2019 |
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Fecha fin congreso
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18/07/2019 |
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Desde la página
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191 |
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Hasta la página
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191 |
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Título de las actas
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Abstracts |