Maturation of nematode-induced galls in Medicago truncatula is related to water status and primary metabolism modifications
| Autor: | Pierre P Frendo, Catherine Deborde, Annick Moing, Renaud Brouquisse, Olivier Pierre, Mickaël Maucourt, Fabien Baldacci-Cresp, Bruno Favery |
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| Přispěvatelé: | Institut Sophia Agrobiotech (ISA), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Recherche Agronomique (INRA), Biologie du fruit et pathologie (BFP), Université Sciences et Technologies - Bordeaux 1-Université Bordeaux Segalen - Bordeaux 2-Institut National de la Recherche Agronomique (INRA) |
| Rok vydání: | 2015 |
| Předmět: |
Inorganic ions
Giant cell Plant Science Plant Roots digestive system chemistry.chemical_compound Osmotic Pressure Medicago truncatula Botany Metabolites Genetics Meloidogyne incognita Tylenchoidea [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Animals Root-knot nematode Gall Trehalase Nuclear Magnetic Resonance Biomolecular Principal Component Analysis biology digestive oral and skin physiology food and beverages General Medicine biology.organism_classification Trehalose digestive system diseases Nematode chemistry Host-Pathogen Interactions Agronomy and Crop Science Water status |
| Zdroj: | Plant Science Plant Science, Elsevier, 2015, 232, pp.77-85. ⟨10.1016/j.plantsci.2014.12.019⟩ |
| ISSN: | 0168-9452 |
| DOI: | 10.1016/j.plantsci.2014.12.019 |
| Popis: | International audience; Root-knot nematodes are obligatory plant parasitic worms that establish and maintain an intimate relationship with their host plants. During a compatible interaction, these nematodes induce the redifferentiation of root cells into multinucleate and hypertrophied giant cells (GCs). These metabolically active feeding cells constitute the exclusive source of nutrients for the nematode. We analyzed the modifications of water status, ionic content and accumulation of metabolites in development and mature galls induced by Meloidogyne incognita and in uninfected roots of Medicago truncatula plants. Water potential and osmotic pressure are significantly modified in mature galls compared to developing galls and control roots. Ionic content is significantly modified in galls compared to roots. Principal component analyses of metabolite content showed that mature gall metabolism is significantly modified compared to developing gall metabolism. The most striking differences were the three-fold increase of trehalose content associated to the five-fold diminution in glucose concentration in mature galls. Gene expression analysis showed that trehalose accumulation was, at least, partially linked to a significantly lower expression of the trehalase gene in mature galls. Our results point to significant modifications of gall physiology during maturation. |
| Databáze: | OpenAIRE |
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