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Field isolates of Tomato spotted wilt virus overcoming resistance in capsicum in Australia

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Sharman, M. and Persley, D.M. (2006) Field isolates of Tomato spotted wilt virus overcoming resistance in capsicum in Australia. Australasian Plant Pathology, 35 (2). pp. 123-128.


Article Link: http://dx.doi.org/10.1071/AP06014

Publisher URL: http://www.publish.csiro.au


In 2002 at Virginia, South Australia, capsicum cultivars having the Tsw resistance gene against Tomato spotted wilt virus (TSWV) developed symptoms typical of TSWV infection and several glasshouse-grown crops were almost 100% infected. Samples reacted with TSWV antibodies in ELISA. Virus isolates from infected plants induced severe systemic symptoms, rather than a hypersensitive reaction, when inoculated onto capsicum cultivars and Capsicum chinense genotypes ( PI 152225 and PI 159236) that carry the Tsw resistance gene. Isolates virulent towards the Tsw gene had molecular and biological properties very similar to standard TSWV isolates, including a hypersensitive reaction in Sw-5 (TSWV-resistant) tomato genotypes. Tsw-virulent isolates were found during surveys at Virginia in 2002 and 2004 in both TSWV-resistant and susceptible cultivars of capsicum and tomato.

Item Type:Article
Business groups:Crop and Food Science
Additional Information:© Australasian Plant Pathology Society 2006. Reproduced with permission from © CSIRO Publishing. Access to published version may be available via Publisher’s website.
Keywords:Capsicum chinense; Sw-5 gene; Tsw gene genome reassortment; breaking strains; Tospovirus; Chinense; Tswv; pepper; gene; selection; pathogen; thrips.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Science > Microbiology > Virology
Plant culture > Vegetables
Live Archive:30 Jan 2009 06:30
Last Modified:03 Sep 2021 16:43

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