Novel somatic hybrids (Solanum tuberosum L.+Solanum tarnii) and their fertile BC1 progenies express extreme resistance to potato virus Y and late blight.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
R ThiemeThomas Thieme

Abstract

Solanum tarnii, a wild diploid, tuber-bearing Mexican species belonging to the series Pinnatisecta is highly resistant to Potato virus Y (PVY) and Colorado potato beetle and shows a strong hypersensitive reaction to Phytophthora infestans. Therefore, it could be a potential source of resistance to pathogens for potato breeders. S. tarnii (2n=2x=24) is reproductively isolated from tetraploid Solanum tuberosum and hence difficult to include in potato breeding programmes. In this study, interspecific somatic hybrids were produced for the first time by protoplast electrofusion of the cells of potato cv. Delikat (Solanum tuberosum L.) and Solanum tarnii. The hybrid nature of the regenerants was confirmed by simple sequence repeat (SSR) and amplified fragment length polymorphism (AFLP) markers and by morphological analysis and flow cytometry. Selected somatic hybrids were successfully backcrossed with cv. Delikat. Parental lines, primary somatic hybrids and BC1 progeny were assessed for resistance to PVY by mechanical inoculation, grafting and exposure to viruliferous aphid vectors in the field, and resistance to late blight (P. infestans) by detached leaflet and whole tuber tests. The somatic hybrids showed no symptoms of viral infe...Continue Reading

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Citations

Mar 5, 2013·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Thomas LüpkenFrank Ordon
Sep 3, 2013·Journal of Plant Physiology·Justyna TarwackaBernard Wielgat
Mar 16, 2011·Journal of Agricultural and Food Chemistry·Sinead Eileen MilnerAnita Rose Maguire
Sep 29, 2009·Journal of Genetics and Genomics = Yi Chuan Xue Bao·Guangmin Xia
Sep 10, 2014·Journal of the Science of Food and Agriculture·Oumèma Nouri-EllouzRadhia Gargouri-Bouzid
Apr 30, 2015·PloS One·Nora P Castañeda-ÁlvarezDavid M Spooner
Jan 29, 2020·Breeding Science·Tri HandayaniKazuo N Watanabe
Feb 7, 2019·Frontiers in Plant Science·Elena Rakosy-TicanAdriana Aurori
Mar 11, 2020·Experimental Cell Research·R Kelly Dawe
May 28, 2021·3 Biotech·Sanjeev SharmaVinay Bhardwaj

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