Expression profiles of Arabidopsis phospholipase A IIA gene in response to biotic and abiotic stresses.

We examined the transcripts that showed changes among the ca.7,000 Arabidopsis full-length cDNAs under biotic and abiotic stresses. Expression of Arabidopsis phospholipase A IIA (AtPLA IIA) gene was induced by various treatments such as pathogen inoculation (Alternaria alternata, Alternaria brassicicola and Colletotrichum higginsianum), cold, high-salinity, abscisic acid, salicylic acid, methyl jasmonate, ethephon, paraquat, rose bengal, UV-C and CuSO(4)-treatments. The regulation of AtPLA IIA gene expression under biotic and abiotic stresses was analyzed with AtPLA IIA promoter region (from +95 to -1,405) fused to the GUS reporter gene. In conclusion, the promoter activity is induced under these stresses.