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 551730
Title Reduced phloem uptake of Myzus persicae on an aphid resistant pepper accession
Author(s) Sun, Mengjing; Voorrips, R.E.; Steenhuis-Broers, M.M.; Westende, W.P.C. van 't; Vosman, B.
DOI https://doi.org/10.6084/m9.figshare.c.4146737
Department(s) Plant Breeding
PE&RC
PBR Quantitative aspects of Plant Breeding
PBR Biodiversity and genetic variation
EPS
PBR Non host and insect resistance
Publication type Dataset
Publication year 2018
Keyword(s) aphid resistance screening - Capsicum baccatum - EPG - callose - real-time PCR
Abstract Background The green peach aphid (GPA), Myzus persicae, is economically one of the most threatening pests in pepper cultivation, which not only causes direct damage but also transmits many viruses. Breeding aphid resistant pepper varieties is a promising and environmentally friendly method to control aphid populations in the field and in the greenhouse. Until now, no strong sources of resistance against the GPA have been identified. Therefore the main aims of this study were to identify pepper materials with a good level of resistance to GPA and to elucidate possible resistance mechanisms. Results We screened 74 pepper accessions from different geographical areas for resistance to M. persicae. After four rounds of evaluation we identified one Capsicum baccatum accession (PB2013071) as highly resistant to M. persicae, while the accessions PB2013062 and PB2012022 showed intermediate resistance. The resistance of PB2013071 resulted in a severely reduced uptake of phloem compared to the susceptible accession, as determined by Electrical Penetration Graph (EPG) studies. Feeding of M. persicae induced the expression of callose synthase genes and resulted in callose deposition in the sieve elements in resistant, but not in susceptible plants. Conclusions Three aphid resistant pepper accessions were identified, which will be important for breeding aphid resistant pepper varieties in the future. The most resistant accession PB2013071 showed phloem-based resistance against aphid infestation.
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