Erschienen in:
01.04.2008 | Original Article
The coat protein gene of tobamovirus P0 pathotype is a determinant for activation of temperature-insensitive L
1a
-gene-mediated resistance in Capsicum plants
verfasst von:
Katsutoshi Matsumoto, Hiromasa Sawada, Kouhei Matsumoto, Hiroyuki Hamada, Eri Yoshimoto, Takao Ito, Shigeharu Takeuchi, Shinya Tsuda, Kazumi Suzuki, Kappei Kobayashi, Akinori Kiba, Tetsuro Okuno, Yasufumi Hikichi
Erschienen in:
Archives of Virology
|
Ausgabe 4/2008
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Abstract
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 (P1,2 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.