Erwinia carotovora Infection Enhances the Expression of Two Novel Abiotic Stress-inducible Genes in Potato
2004
Sós-Hegedűs, Anita | Žvingila, Donatas | Bánfalvi, Zsófia | Dallmann, Géza
In this study, cDNAs of two Erwinia carotovora-induced potato genes, designated Solanum tuberosum–Erwinia-induced-1 and 2 (Stei1 and Stei2) were isolated by differential display technique. Stei1 and Stei2 were detected in low copy number in the potato genome and found to encode putative proteins with no significant homology to any genes with known function. Treatment of the leaves with salicylic acid, methyl jasmonate and ethylene elevated neither Stei1 nor Stei2 mRNA levels. However, Stei1 and Stei2 expression were induced not only by E. carotovora but also by infiltration of water in leaves, albeit to a lesser extent. In addition, Stei2 was up-regulated by NaCl, wounding, dehydration and abscisic acid. Thus Stei1 and Stei2 define novel genes belonging to the family of those pathogenesis-related genes whose expression can be induced both by biotic and abiotic stresses.
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