Australasian Plant Pathology

, Volume 35, Issue 2, pp 123–128 | Cite as

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

  • M. Sharman
  • D. M. Persley


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.

Additional keywords

Capsicum chinense Sw-5 gene Tsw gene 


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Copyright information

© Australasian Plant Pathology Society 2006

Authors and Affiliations

  1. 1.Department of Primary Industries and FisheriesIndooroopillyAustralia
  2. 2.Cooperative Research Centre for Tropical Plant ProtectionSt LuciaAustralia

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