Reference : Two PR-1 loci detected in the native cultivated potato Solanum phureja appear differe...
Scientific journals : Article
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
Two PR-1 loci detected in the native cultivated potato Solanum phureja appear differentially expressed upon challenge by late blight
Evers, Danièle mailto [> > > >]
Schweitzer, C. [> > > >]
Nicot, N. [> > > >]
Gigliotti, S. [> > > >]
Herrera, M. R. [> > > >]
Hausman, Jean-François mailto [> > > >]
Hoffmann, Lucien [> > > >]
Trognitz, B. [> > > >]
Dommes, Jacques mailto [Université de Liège - ULiège > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales >]
Ghislain, Marc [> > > >]
Physiological and Molecular Plant Pathology
Academic Press Ltd Elsevier Science Ltd
3-5, SEP-OCT
Yes (verified by ORBi)
[en] PR-1 genes ; pathogenesis-related proteins ; late blight resistance ; potato ; Solanum phureja ; Phytophthora infestans
[en] Plant pathogenesis-related proteins are toxic to invading pathogens. Among them, the Subfamily PR-1 represents low-molecular weight proteins of unknown biochemical function. Here, we describe the cloning and isolation of two PR-1 genes (PR-1b1 (GenBank accession no. SPH493450) and PR-1b2 (SPH493451)) that encode predicted basic proteins. We isolated them from Solanum phureja, a native Andean potato with horizontal resistance to late blight, caused by the oomycete Phytoplithora infestans. We demonstrate that the PR-1 genes belong to a small multigene family with an estimated copy number of 4-6 with one of them located oil chromosome IX as determined by genetic mapping. The expression of PR-1 genes was different in late blight resistant and Susceptible genotypes. Therefore, we propose that both PR-1 genes may play a role in horizontal late blight resistance of S. phureja. (c) 2006 Elsevier Ltd. All rights reserved.
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