期刊
MOLECULAR BREEDING
卷 15, 期 4, 页码 409-422出版社
SPRINGER
DOI: 10.1007/s11032-005-0386-8
关键词
Cladosporium fulvum; contig; fingerprinting; Hcr9; Lycopersicon; resistance
Resistance against the tomato fungal pathogen Cladosporium fulvum is often conferred by Hcr9 genes (Homologues of the C. fulvum resistance gene Cf-9) that are located in the Milky Way cluster on the short arm of chromosome 1. These Hcr9 genes mediate recognition of fungal avirulence gene products. In contrast, the resistance gene Cf-Ecp2 mediates recognition of the virulence factor Ecp2 and is located in the Orion (OR) cluster on the short arm of chromosome 1. Here, we report the map- and homology-based cloning of the OR Hcr9 cluster. A method was optimised to generate clone-specific fingerprint data that were subsequently used in the efficient calculation of genomic DNA contigs. Three Hcr9s were identified as candidate Cf-Ecp2 genes. By PCR-based cloning using specific OR sequences, orthologous Hcr9 genes were identified from different Lycopersicon species and haplotypes. The OR Hcr9s are very homologous. However, based on the relative low sequence homology to other Hcr9s, the OR Hcr9s are classified as a new subgroup.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据