title: The coat protein gene of tobamovirus P 0 pathotype is a determinant for activation of temperature-insensitive L 1a-gene-mediated resistance in Capsicum plants.
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 P(0) 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 (P(0) pathotype), paprika mild mottle virus-J (P(1 )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.
authors.affiliation: Laboratory of Plant Pathology and Biotechnology, Kochi University, Nankoku, Kochi, 783-8502, Japan.
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Sawada
authors.forename: Kouhei
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Hamada
authors.forename: Eri
authors.initials: E
authors.lastname: Yoshimoto
authors.forename: Takao
authors.initials: T
authors.lastname: Ito
authors.forename: Shigeharu
authors.initials: S
authors.lastname: Takeuchi
authors.forename: Shinya
authors.initials: S
authors.lastname: Tsuda
authors.forename: Kazumi
authors.initials: K
authors.lastname: Suzuki
authors.forename: Kappei
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Akinori
authors.initials: A
authors.lastname: Kiba
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Okuno
authors.forename: Yasufumi
authors.initials: Y
authors.lastname: Hikichi
mesh_terms: D002212:Capsicum / Q000235:genetics / Q000821:virology*; D036022:Capsid Proteins / Q000235:genetics*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D010935:Plant Diseases / Q000821:virology*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D013696:Temperature; D017898:Tobamovirus / Q000235:genetics / Q000472:pathogenicity*
chemical_list: D036022:Capsid Proteins; D010940:Plant Proteins; D011994:Recombinant Proteins