The root-knot nematode resistance N-gene co-localizes in the Me-genes cluster on the pepper (Capsicum annuum L.) P9 chromosome

文献类型： 外文期刊

第一作者： Fazari, Ariane

作者： Fazari, Ariane;Djian-Caporalino, Caroline;Palloix, Alain;Sage-Palloix, Anne-Marie;Wang, LiHao;Hua, Ming Yan;Zhang, Bao Xi

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关键词： Integrated pepper map;Me resistance genes;N resistance gene;Meloidogyne spp;Solanaceae

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

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收录情况： SCI

摘要： Root-knot nematodes (Meloidogyne spp.) are major plant pathogens, aecting several solanaceous crops worldwide including pepper (Capsicum spp.). Owing to the drastic reduction in the use of most nematicides, breeding for root-knot nematode resistance is a major challenge for pepper breeders. In pepper, resistance to this pathogen is dominant and controlled by several Me-genes, which were mapped on the pepper P9 chromosome using PCR-based markers, and by the Ngene which was shown to be linked to Me3 using allelism tests. In this study, we developed PCR-based markers and showed that the N-gene colocalized in the Me-genes cluster on the P9 chromosome on pepper reference maps using CARTHAGENE software (INRA: Institut National de la Recherche Agronomique, Toulouse, France). N was mapped at 7 cM from Me1 and 2 cM from Me3 which is conrmed to be allelic to Me7 according to allelism resistance tests. The tightly linked markers to Me and N-genes will be very useful for the marker-assisted selection of nematodes resistance in pepper and to study the durability of these R-genes, alone or pyramided in dierent genetic backgrounds.

分类号： S3

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