Endophytic colonization of barley (Hordeum vulgare) roots by the nematophagous fungus Pochonia chlamydosporia reveals plant growth promotion and a general defense and stress transcriptomic response

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Título: Endophytic colonization of barley (Hordeum vulgare) roots by the nematophagous fungus Pochonia chlamydosporia reveals plant growth promotion and a general defense and stress transcriptomic response
Autor/es: Larriba Tornel, Eduardo | Jaime, Maria DLA | Nislow, Corey | Martín-Nieto, José | Lopez-Llorca, Luis Vicente
Grupo/s de investigación o GITE: Genética Humana y de Mamíferos (GHM) | Fitopatología
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada | Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología | Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef"
Palabras clave: Effector-triggered immunity | Endophytism | Hordeum vulgare | Plant growth | Pochonia chlamydosporia | Root transcriptomics
Área/s de conocimiento: Genética | Botánica | Fisiología Vegetal
Fecha de publicación: jul-2015
Editor: Springer Japan
Cita bibliográfica: Journal of Plant Research. 2015, 128(4): 665-678. doi:10.1007/s10265-015-0731-x
Resumen: Plant crop yields are negatively conditioned by a large set of biotic and abiotic factors. An alternative to mitigate these adverse effects is the use of fungal biological control agents and endophytes. The egg-parasitic fungus Pochonia chlamydosporia has been traditionally studied because of its potential as a biological control agent of plant-parasitic nematodes. This fungus can also act as an endophyte in monocot and dicot plants, and has been shown to promote plant growth in different agronomic crops. An Affymetrix 22K Barley GeneChip was used in this work to analyze the barley root transcriptomic response to P. chlamydosporia root colonization. Functional gene ontology (GO) and gene set enrichment analyses showed that genes involved in stress response were enriched in the barley transcriptome under endophytism. An 87.5 % of the probesets identified within the abiotic stress response group encoded heat shock proteins. Additionally, we found in our transcriptomic analysis an up-regulation of genes implicated in the biosynthesis of plant hormones, such as auxin, ethylene and jasmonic acid. Along with these, we detected induction of brassinosteroid insensitive 1-associated receptor kinase 1 (BR1) and other genes related to effector-triggered immunity (ETI) and pattern-triggered immunity (PTI). Our study supports at the molecular level the growth-promoting effect observed in plants endophytically colonized by P. chlamydosporia, which opens the door to further studies addressing the capacity of this fungus to mitigate the negative effects of biotic and abiotic factors on plant crops.
Patrocinador/es: This research was funded by the Spanish Ministry of Science and Innovation Grant AGL2011-29297.
URI: http://hdl.handle.net/10045/52419
ISSN: 0918-9440 (Print) | 1618-0860 (Online)
DOI: 10.1007/s10265-015-0731-x
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © The Botanical Society of Japan and Springer Japan 2015. The final publication is available at Springer via http://dx.doi.org/10.1007/s10265-015-0731-x
Revisión científica: no
Versión del editor: http://dx.doi.org/10.1007/s10265-015-0731-x
Aparece en las colecciones:INV - GHM - Artículos de Revistas
INV - Fitopatología - Artículos de Revistas

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