TY - JOUR T1 - Identification of disease resistance genes from a Chinese wild 1 grapevine (<em>Vitis davidii</em>) by analysing grape transcriptomes and transgenic Arabidopsis plants JF - bioRxiv DO - 10.1101/169631 SP - 169631 AU - Ying Zhang AU - Jia-Long Yao AU - Hu Feng AU - Jianfu Jiang AU - Xiucai Fan AU - Haisheng Sun AU - Yun-Fei Jia AU - Yanyan Zhu AU - Ran Wang AU - Chonghuai Liu Y1 - 2017/01/01 UR - http://biorxiv.org/content/early/2017/07/28/169631.abstract N2 - Highlight Transcription profiles showed that 20 candidate genes were obviously co-expressed at 12 hpi in 30 Vitis davidii.VdWRKY53 trancription factor enhanced the resisitance in grapevine and Arabidopsis.Abstract The molecular mechanisms underlying disease tolerance in grapevines remain uncharacterized, even though there are substantial differences in the resistance of grapevine species to fungal and bacterial diseases. In this study, we identified genes and genetic networks involved in disease resistance in grapevines by comparing the transcriptomes of a strongly resistant clone of Chinese wild grapevine (Vitis davidii cv. Ciputao 941, DAC) and a susceptible clone of European grapevine (Vitis vinifera cv. Manicure Finger, VIM) before and after infection with white rot disease (Coniella diplodiella). Disease resistance-related genes were triggered in DAC approximately 12 hours post infection (hpi) with C. diplodiella. Twenty candidate resistant genes were co-expressed in DAC. One of these candidate genes, VdWRKY53 (GenBank accession KY124243), was over-expressed in transgenic Arabidopsis thaliana plants and was found to provide these plants with enhanced resistance to C. diplodiella, Pseudomonas syringae pv tomato PDC3000, and Golovinomyces cichoracearum. This result indicates that VdWRKY53 may be involved in nonspecific resistance via interaction with fungal and oomycete elicitor signals and the activation of defence gene expression. These results provide potential gene targets for molecular breeding to develop resistant grape cultivars. ER -