1. Symbiosis-related pea genes modulate fungal and plant gene expression during the arbuscule stage of mycorrhiza with Glomus intraradices
- Author
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Alexey Y. Borisov, Pascale M. A. Seddas-Dozolme, Christine Arnould, Silvio Gianinazzi, Diederik van Tuinen, Elena Kuznetsova, Marie Tollot, Vivienne Gianinazzi-Pearson, Plante - microbe - environnement : biochimie, biologie cellulaire et écologie (PMEBBCE), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Etablissement National d'Enseignement Supérieur Agronomique de Dijon (ENESAD), and All-Russia Research Institute for Agricultural Microbiology
- Subjects
0106 biological sciences ,GENE EXPRESSION ,MYCORHIZES A ARBUSCULES ,LASER MICRODISSECTION ,Genotype ,GLOMUS INTRARADICES ,Genes, Fungal ,Plant Science ,Genes, Plant ,01 natural sciences ,Genome ,Microbiology ,03 medical and health sciences ,Symbiosis ,Mycorrhizae ,Botany ,Gene expression ,Genetics ,Mycorrhiza ,Glomeromycota ,Molecular Biology ,Gene ,[SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology ,Ecology, Evolution, Behavior and Systematics ,Glomus ,030304 developmental biology ,2. Zero hunger ,0303 health sciences ,biology ,fungi ,Peas ,food and beverages ,General Medicine ,biology.organism_classification ,Arbuscular mycorrhiza ,Gene Expression Regulation ,Mutation ,SYMBIOSIS-RELATED PLANT MUTANTS ,010606 plant biology & botany - Abstract
International audience; The arbuscular mycorrhiza association results from a successful interaction between genomes of the plant and fungal symbiotic partners. In this study, we analyzed the effect of inactivation of late-stage symbiosis-related pea genes on symbiosis-associated fungal and plant molecular responses in order to gain insight into their role in the functional mycorrhizal association. The expression of a subset of ten fungal and eight plant genes, previously reported to be activated during mycorrhiza development, was compared in Glomus intraradices-inoculated wild-type and isogenic genotypes of pea mutated for the PsSym36, PsSym33, and PsSym40 genes where arbuscule formation is inhibited or fungal turnover modulated, respectively. Microdissection was used to corroborate arbuscule-related fungal gene expression. Molecular responses varied between pea genotypes and with fungal development. Most of the fungal genes were downregulated when arbuscule formation was defective, and several were upregulated with more rapid fungal development. Some of the plant genes were also affected by inactivation of the PsSym36, PsSym33, and PsSym40 loci, but in a more time-dependent way during root colonization by G. intraradices. Results indicate a role of the late-stage symbiosis-related pea genes not only in mycorrhiza development but also in the symbiotic functioning of arbuscule-containing cells.
- Published
- 2010