Molecular examination of a chromosome region that controls resistance to potato Y and A potyviruses in potato

被引：79

作者：

Hämäläinen, JH

Sorri, VA

Watanabe, KN

Gebhardt, C

Valkonen, JPT

机构：

[1] Univ Helsinki, Inst Biotechnol, Viikki Bioctr 1, FIN-00014 Helsinki, Finland

[2] Kinki Univ, Dept Biotechnol Sci, Wakayama 64964, Japan

[3] Max Planck Inst Zuchtungsforsch, D-50829 Cologne, Germany

来源：

THEORETICAL AND APPLIED GENETICS | 1998年 / 96卷 / 08期

关键词：

potato virus A; potato virus Y; resistance gene; RFLP; diploid potato;

D O I：

10.1007/s001220050836

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The gene R gamma(adg) that confers resistance to potato Y potyvirus (PVY) in the cultivated potato [Solanum tuberosum subsp. andigena, line 2x(v-2)7] is located on chromosome XI in a segment that contains three other known resistance genes in other syntenic solanaceous species. One of them is the gene N that controls resistance to tobacco mosaic tobamovirus in tobacco and has previously been isolated and sequenced. Three sequence-related resistance gene-like (RGL) DNA fragments (354-369 bp) highly homologous to the gene N were PCR-amplified from the potato line 2x(v-2)7. Two RGL fragments (79 and 81% homologous to the N gene) co-segregated with R gamma(adg) among the 77 F1 progeny tested. These RGLs may originate from a resistance gene family on chromosome XI. The potato line 2x(v-2)7 also expressed resistance to potato A potyvirus (PVA), which was controlled by another locus on chromosome XI mapped ca. 6.8 cM distal to R gamma(adg).

引用

页码：1036 / 1043

页数：8

共 43 条

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