Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 333754
Title Evaluation of thrips resistance in pepper to control Tomato spotted wilt virus infection
Author(s) Maris, P.C.
Source Wageningen University. Promotor(en): R.W. Goldbach, co-promotor(en): Dick Peters. - Wageningen : S.n. - ISBN 9789085040026 - 119
Department(s) Laboratory of Virology
PE&RC
Publication type Dissertation, internally prepared
Publication year 2004
Keyword(s) capsicum annuum - plaagresistentie - insectenplagen - thrips - vectorbestrijding - tomatenbronsvlekkenvirus - frankliniella occidentalis - paprika - capsicum annuum - pest resistance - insect pests - frankliniella occidentalis - thrips - vector control - tomato spotted wilt virus - sweet peppers
Categories Plant Defence, Plant Resistance
Abstract The objective of this study was to analyse the effect of thrips ( F. occidentalis ) resistance in pepper ( Capsicum ) on the spread of Tomato spotted wilt virus (TSWV). Results demonstrate that the rate of primary TSWV-infection is effectively limited in a thrips-resistant (TR) pepper crop compared to a thrips-susceptible (TS) crop, and that this is based on a decreased preference of thrips for TR plants. Secondary TSWV-infections were effectively restricted in the TR pepper crop and this is based on a greatly reduced thrips population built-up.

The effect of thrips resistance on the spread of TSWV was also analysed in a virus-resistant genotype. TSWV-resistant plants respond with a hypersensitive reaction after infection with TSWV, resulting in necrotic local lesions on leaves and fruits. Under the same infection pressure, fewer local lesions were found in the thrips-resistant accession PI 152225 than in the thrips-susceptible PI 159236 accession, indicating a synergistic effect of thrips- and virus resistance.

Studies presented in the last part of the thesis show mutual benefits for F. occidentalis and TSWV from the attraction to virus-infected plants. Attraction resulted in more offspring on these plants and thereby enhancing the chance for virus transmission. Besides, thrips developed significantly faster on TSWV-infected plants than on non-infected plants. It was demonstrated that volatiles released from TSWV-infected plants may be involved in the attraction of thrips to TSWV-infected plants.
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