文献类型： 外文期刊

作者： Li, G. C. ¹ ; Jin, L. P. ¹ ; Wang, X. W. ¹ ; Xie, K. Y. ¹ ; Yang, Y. ³ ; van der Vossen, E. A. G.; Huang, S. W. ¹ ; Qu ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Lab Mol Genet Solanaceous Crops, Sino Dutch Joint Lab Hort Genom Technol, Inst Vegetables & Flowers, Beijing 10081, Peoples R China

2.Shandong Acad Agr Sci, Biotechol Res Ctr, Jinan 250100, Peoples R China

3.Shandong Acad Agr Sci

关键词： Solanum tuberosum;Ralstonia solanacearum;bacterial wilt;suppression subtractive hybridization;cDNA macroarray;EST

期刊名称：RUSSIAN JOURNAL OF PLANT PHYSIOLOGY （ 影响因子：1.481； 五年影响因子：1.608 ）

ISSN： 1021-4437

年卷期： 2010 年 57 卷 5 期

页码：

收录情况： SCI

摘要： Bacterial wilt (BW) caused by Ralstonia solanacearum (Rs) is an important quarantine disease that spreads worldwide and infects hundreds of plant species. The BW defense response of potato is a complicated continuous process, which involves transcription of a battery of genes. The molecular mechanisms of potato-Rs interactions are poorly understood. In this study, we combined suppression subtractive hybridization and macroarray hybridization to identify genes that are differentially expressed during the incompatible interaction between Rs and potato. In total, 302 differentially expressed genes were identified and classified into 12 groups according to their putative biological functions. Of 302 genes, 81 were considered as Rs resistance-related genes based on the homology to genes of known function, and they have putative roles in pathogen recognition, signal transduction, transcription factor functioning, hypersensitive response, systemic acquired resistance, and cell rescue and protection. Additionally, 50 out of 302 genes had no match or low similarity in the NCBI databases, and they may represent novel genes. Of seven interesting genes analyzed via RNA gel blot and semi-quantitative RT-PCR, six were induced, one was suppressed, and all had different transcription patterns. The results demonstrate that the response of potato against Rs is rapid and involves the induction of numerous various genes. The genes identified in this study add to our knowledge of potato resistance to Rs.