Search Results

6 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 14

    Field tests of loss-of-function tobacco lines of eIF(iso)4E for resistance to tobacco bushy top disease and agronomic traits

    KOGA K.(1); SHINJO A.(1); MAINJENI C.E.D.(2); MSANGOSOKO K.R.(2); UDAGAWA H.(1); TAKAKURA Y.(1)
    (1) Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan; (2) Agricultural Research and Extension Trust, Department of Research and Technical Services, Lilongwe, Malawi
    Tobacco bushy top disease (TBTD) is one of the serious diseases affecting tobacco (Nicotiana tabacum L.) production in African countries such as Malawi, Zambia, Tanzania and Ethiopia. This disease is caused by a mixed infection of tobacco bushy top...
  2. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 45

    New genetic source for black shank resistance and genomic loci associated with its resistance

    SHINJO A.; KOGA K.; ONO T.; NOGUCHI S.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Black shank causes severe yield loss of tobacco in Japan because of root and leaf infection by Phytophthora nicotianae, the causal agent of this disease. Several cultivated varieties in Japan have partial resistance derived from Florida 301, which is...
  3. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 47

    Enhanced resistance to potato virus Y (PVY) and resistance-breaking PVY in tobacco eIF4E-S and eIF(iso)4E-T double mutant

    TAKAKURA Y.; UDAGAWA H.; SHINJO A.; KOGA K.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Eukaryotic translation-initiation factors in plants, eIF4E and eIF(iso)4E, play key roles in infection by potyviruses and other plant RNA viruses. Mutations in the genes encoding these factors might reduce susceptibility to viruses. They are the...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 37

    Loss-of-function of a tobacco eukaryotic translation initiation factor confers resistance to tobacco bushy top virus

    SHINJO A.; TAKAKURA Y.; UDAGAWA H.; KOGA K.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Tobacco bushy top disease causes severe damage to tobacco (Nicotiana tabacum) in Sub-Saharan African countries such as Malawi, Zambia and Tanzania. Reportedly this disease is caused by a complex of tobacco bushy top virus (TBTV, the genus Umbravirus)...
  5. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 06

    Inactivation of NtCPS2 allele linked with the major QTL for black shank resistance derived from Beinhart 1000

    SHINJO A.; KOGA K.; HYODO H.; NOGUCHI S.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Tochigi, Japan
    The cigar tobacco variety Beinhart 1000 is well known to have high level of partial resistance to black shank caused by Phytophthora nicotianae. The researchers at the North Carolina State University reported that it's quantitative trait loci (QTLs)...
  6. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 53

    A resistance-breaking potyvirus uses a eukaryotic translation initiation factor different from that of a non-breaking virus: evidence obtained from interaction of potato virus Y and Nicotiana tabacum

    TAKAKURA Y.; SHINJO A.; UDAGAWA H.; KOGA K.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Tochigi, Japan
    Success of the viral infection cycle depends on complex interplay between components encoded by viral and host genomes. Potyviruses use host eukaryotic translation initiation factors (eIFs) for their infection cycle. Many reports have described that...