Transcriptional responses of Medicago truncatula upon sulfur deficiency stress and arbuscular mycorrhizal symbiosis.

摘要: Sulfur plays an essential role in plants’ growth and development their response to various abiotic biotic stresses despite its leachability very low abundance the only form that plant roots can uptake (sulfate). It is part of amino acids, glutathione (GSH), thiols proteins peptides, membrane sulfolipids, cell walls secondary products, so reduced availability drastically alter development. The nutritional benefits symbiotic interactions help case S deficiency. In particular arbuscular mycorrhizal (AM) interaction improves N, P nutrition, but mechanisms behind these exchanges are not fully known yet. Although transcriptional changes leguminous model Medicago truncatula have been already assessed several and/or conditions, deficiency has considered far. aim this work get a first overview on S-deficiency responses leaf root tissues plants interacting with AM fungus Rhizophagus irregularis. Several hundred genes displayed significantly different transcript accumulation levels. Annotation GO ID association were used identify biological processes molecular functions affected by sulfur starvation. Beside beneficial effects interaction, greatly status, showing differences transcriptomic footprints. pathways which important appeared be differentially according generally responsiveness mycorrhized plants.