Transcriptional responses to water deficit and Xylella fastidiosa (Pierce's disease) in Vitis vinifera

ABSTRACT: Pierce's disease, caused by the bacterium Xylella fastidiosa, is one of the most devastating diseases of cultivated grapes. To test the long-standing hypothesis that Pierce's disease results from pathogen-induced drought stress, we used the Affymetrix Vitis GeneChip to compare the transcriptional response of Vitis vinifera to Xylella infection, water deficit, or a combination of the two stresses. The results reveal a massive redirection of gene transcription involving 822 genes with a minimum 2-fold change (p<0.05), including the upregulation of transcripts for phenylpropanoid and flavonoid biosynthesis, pathogenesis related (PR) proteins, absisic acid (ABA)/jasmonic acid (JA)-responsive transcripts, and down-regulation of transcripts related to photosynthesis, growth and nutrition. Althou

ORGANISM(S): Vitis vinifera

SUBMITTER: Douglas Cook 

PROVIDER: E-GEOD-44213 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress