title: Identification of Powdery Mildew Responsive Genes in Hevea brasiliensis through mRNA Differential Display.
abstract: Powdery mildew is an important disease of rubber trees caused by Oidium heveae B. A. Steinmann. As far as we know, none of the resistance genes related to powdery mildew have been isolated from the rubber tree. There is little information available at the molecular level regarding how a rubber tree develops defense mechanisms against this pathogen. We have studied rubber tree mRNA transcripts from the resistant RRIC52 cultivar by differential display analysis. Leaves inoculated with the spores of O. heveae were collected from 0 to 120 hpi in order to identify pathogen-regulated genes at different infection stages. We identified 78 rubber tree genes that were differentially expressed during the plant-pathogen interaction. BLAST analysis for these 78 ESTs classified them into seven functional groups: cell wall and membrane pathways, transcription factor and regulatory proteins, transporters, signal transduction, phytoalexin biosynthesis, other metabolism functions, and unknown functions. The gene expression for eight of these genes was validated by qRT-PCR in both RRIC52 and the partially susceptible Reyan 7-33-97 cultivars, revealing the similar or differential changes of gene expressions between these two cultivars. This study has improved our overall understanding of the molecular mechanisms of rubber tree resistance to powdery mildew.
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. lixiaoxiao1986@hotmail.com.
authors: Xiang
authors: X
authors: Li
authors: College of Agriculture, Hainan University, Haikou 570228, China. bizhenghong9999999@163.com.
authors: Zhenghong
authors: Z
authors: Bi
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. dirong@comcast.net.|Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, 59 Dudley Road, New Brunswick, NJ 08901, USA. dirong@comcast.net.
authors: Rong
authors: R
authors: Di
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. jpdiary@163.com.
authors: Peng
authors: P
authors: Liang
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. hqg11300817@163.com.
authors: Qiguang
authors: Q
authors: He
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. saucher@hainu.edu.cn.
authors: Wenbo
authors: W
authors: Liu
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. weiguomiao1105@126.com.
authors: Weiguo
authors: W
authors: Miao
authors: College of Environment and Plant Protection, Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, Hainan University, No. 58, Renmin Avenue, Haikou 570228, China. zhengfucong@126.com.
authors: Fucong
authors: F
authors: Zheng
mesh_terms: D001203:Ascomycota / Q000472:pathogenicity; D060467:Disease Resistance / Q000235:genetics*; D020224:Expressed Sequence Tags; D017343:Genes, Plant; D028482:Hevea / Q000235:genetics* / Q000276:immunology / Q000382:microbiology; D059467:Transcriptome
keywords: ESTs; Oidium heveae; differential gene expression; rubber tree