Genome distribution and characterization of sugarcane resistance gene analogs

Rossi Magdalena, Araujo Paula G., Garsmeur Olivier, Dias Viviane M., Paulet Florence, Chen Hui, Van Sluys Marie-Anne, D'Hont Angélique. 2003. Genome distribution and characterization of sugarcane resistance gene analogs. . s.l. : s.n., Résumé Plant and Animal Genomes Conference. 11, San Diego, États-Unis, 11 January 2003/15 January 2003.

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Abstract : Sugarcane ESTs Sequencing Project (SUCEST) has generated a large number of cDNA sequences from several plant tissues submitted or not to different stress conditions. In this paper, we report the result of a search for resistance gene analogs (RGAs) and their mapping in the sugarcane reference genetic map (cultivar R570, 2n=ca 115). Out of 81,223 clusters involving 261,609 ESTs sequence, we identified 88 clusters homologous to pathogen resistance genes with a stringent cut-off value of e-50 or better. One hundred and forty seven markers corresponding to 50 RGAs were localized on 128 co-segregation groups. Over 50% of the RGAs present a clustered arrangement. Close to the only disease resistance locus mapped in sugarcane, a major gene conferring resistance to common rust, we have identified an LRR-like RGA cluster. Detail sequence analysis of two NBS/LRR RGA cluster loci suggests their polyphyletic origins. (Texte intégral)

Mots-clés Agrovoc : Saccharum, Gène, Séquence d'acides aminés, ADN, Génome

Classification Agris : F30 - Plant genetics and breeding

Auteurs et affiliations

  • Rossi Magdalena, Universidade de São Paulo (BRA)
  • Araujo Paula G., Universidade de São Paulo (BRA)
  • Garsmeur Olivier, CIRAD-CA-Canne à sucre (FRA) ORCID: 0000-0001-8869-3689
  • Dias Viviane M., Universidade de São Paulo (BRA)
  • Paulet Florence, CIRAD-CA-Canne à sucre (FRA)
  • Chen Hui, Yunnan Academy of Agricultural Sciences (CHN)
  • Van Sluys Marie-Anne, Universidade de São Paulo (BRA)
  • D'Hont Angélique, CIRAD-CA-Canne à sucre (FRA)

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