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

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.

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Article Link(s): http://dx.doi.org/10.1071/AP06014

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

Abstract

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
Corporate Creators:Department of Employment, Economic Development and Innovation (DEEDI), Agri-Science, Crop and Food Science, Plant Science
Business groups:Agri-Science, 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
Deposited On:30 Jan 2009 06:30
Last Modified:26 Oct 2011 01:48

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