Mycorrhiza

, Volume 20, Issue 6, pp 427–443

Symbiosis-related pea genes modulate fungal and plant gene expression during the arbuscule stage of mycorrhiza with Glomus intraradices

  • Elena Kuznetsova
  • Pascale M. A. Seddas-Dozolme
  • Christine Arnould
  • Marie Tollot
  • Diederik van Tuinen
  • Alexey Borisov
  • Silvio Gianinazzi
  • Vivienne Gianinazzi-Pearson
Original Paper

DOI: 10.1007/s00572-009-0292-8

Cite this article as:
Kuznetsova, E., Seddas-Dozolme, P.M.A., Arnould, C. et al. Mycorrhiza (2010) 20: 427. doi:10.1007/s00572-009-0292-8

Abstract

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.

Keywords

Glomus intraradicesPisum sativumSymbiosis-related plant mutantsGene expressionLaser microdissection

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Elena Kuznetsova
    • 1
    • 2
  • Pascale M. A. Seddas-Dozolme
    • 1
  • Christine Arnould
    • 1
  • Marie Tollot
    • 1
  • Diederik van Tuinen
    • 1
  • Alexey Borisov
    • 2
  • Silvio Gianinazzi
    • 1
  • Vivienne Gianinazzi-Pearson
    • 1
  1. 1.UMR 1088 INRA/5184 CNRS/Université de Bourgogne Plante–Microbe–Environnement, INRA-CMSEDijon CedexFrance
  2. 2.Laboratory of Genetics of Plant Microbe Interactions, Department of BiotechnologyAll-Russia Research Institute for Agricultural MicrobiologyPushkin 8Russia