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Variation in abundance of predicted resistance genes in the Brassica oleracea pangenome.

08:00 EDT 19th September 2018 | BioPortfolio

Summary of "Variation in abundance of predicted resistance genes in the Brassica oleracea pangenome."

Brassica oleracea is an important agricultural species encompassing many vegetable crops including cabbage, cauliflower, broccoli and kale, however it can be susceptible to a variety of fungal diseases such as clubroot, blackleg, leaf spot, and downy mildew. Resistance to these diseases is meditated by specific disease resistance genes-analogs (RGAs) which are differently distributed across B. oleracea lines. The sequenced reference cultivar does not contain all B. oleracea genes due to gene presence/absence variation between individuals, which makes it necessary to search for RGA candidates in the B. oleracea pangenome. Here we present a comparative analysis of RGA candidates in the pangenome of B. oleracea. We show that the presence of RGA candidates differs between lines and suggest that in B. oleracea, SNPs and presence/absence variation drive RGA diversity using separate mechanisms. We identified 32 RGA candidates linked to Sclerotinia, clubroot, and Fusarium wilt resistance QTL, and these findings have implications for crop breeding in B. oleracea, which may also be applicable in other crops species. This article is protected by copyright. All rights reserved.

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Name: Plant biotechnology journal
ISSN: 1467-7652
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