Evaluation of Tomato Hybrids Carrying Ty‐1 and Ty‐2 Loci to Japanese Monopartite Begomovirus Species. Issue 3 (5th November 2012)

• Record Type: Journal Article
• Authors: Shahid, Muhammad Shafiq; Ito, Takuya; Kimbara, Junji; Onozato, Ayumu; Natsuaki, Keiko T.; Ikegami, Masato
• Is Part Of: Journal of phytopathology. Volume 161:Issue 3(2013:Mar.)
• Page Start: 205
• Page End: 209
• Publication Date: 2012-11-05
• Subjects: Plant diseases -- Periodicals; 632
• DOI: 10.1111/jph.12041
• Languages: English
• ISSNs: 0931-1785

Abstract

<abstract abstract-type="main" id="jph12041-abs-0001"> <title>Abstract</title> <p> <italic>Tobacco leaf curl Japan virus, Honeysuckle yellow vein mosaic virus</italic> and <italic>Tomato yellow leaf curl virus</italic> are three begomoviruses that infect tomato crops in Japan. Tomato infection by begomoviruses has increased in Japan after the development of a high level of resistance to certain insecticides in some populations of the vector <italic>B. tabaci</italic> biotypes 'B and Q'. <italic>Ty‐1</italic> and <italic>Ty‐2</italic> homozygous tomato hybrids were evaluated for reaction to monopartite begomovirus species in Japan by <italic>Agrobacterium</italic>‐mediated inoculation. Test plants were evaluated by a disease assessment scale (DAS), varying from 1 = no symptoms to 4 = severe symptoms, and systemic infection was evaluated by polymerase chain reaction (PCR), using specific begomovirus primers for each virus. <italic>Ty‐1</italic> hybrids showed tolerance to HYVMV and with a large number of plants being neither virus‐free nor symptom‐free. The response of <italic>Ty‐1</italic> hybrids was also resistant to moderately resistant against TbLCJV. The response of <italic>Ty‐2</italic> hybrids was resistant to highly resistant against the three monopartite begomoviruses, when compared with susceptible plants.</p> </abstract>