The coat protein gene of tobamovirus P₀ pathotype is a determinant for activation of temperature-insensitive L^1a-gene-mediated resistance in Capsicum plants

详细信息    查看全文

• 作者：Katsutoshi Matsumoto ; Hiromasa Sawada ; Kouhei Matsumoto ; Hiroyuki Hamada ; Eri Yoshimoto ; Takao Ito ; Shigeharu Takeuchi ; Shinya Tsuda ; Kazumi Suzuki and Kappei Kobayashi ; et al.
• 刊名：Archives of Virology
• 出版年：2008
• 出版时间：April, 2008
• 年：2008
• 卷：153
• 期：4
• 页码：645-650
• 全文大小：253.6 KB

文摘

Tobamovirus resistance in Capsicum plants, which is mediated by L genes (L 1 , L 2 , L 3 or L 4 ), is known to be temperature sensitive. However, the L 1a gene, a newly identified tobamovirus resistance gene that is mapped to the L locus, confers temperature-insensitive resistance against the tobamovirus P₀ pathotype. To identify the viral elicitor that activates the L 1a -gene-mediated resistance, several chimeric viral genomes were constructed between tobacco mosaic virus-L (P₀ pathotype), paprika mild mottle virus-J (P₁ pathotype) and pepper mild mottle virus-J (P_1,2 pathotype). Infection patterns of these chimeric viruses in L 1a -harboring plants revealed that the L 1a -gene-mediated resistance was activated by the CP of a particular pathotype of tobamovirus, like other L-gene-mediated resistances, but the L 1a -gene-mediated resistance differs from those conferred by other L genes in terms of temperature sensitivity.