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Agronomy 2019, 9(2), 49;

Association Mapping of Fertility Restorer Gene for CMS PET1 in Sunflower

Skolkovo Institute of Science and Technology, Moscow 121205, Russia
Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119992, Russia
N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources, Saint Petersburg (ex Leningrad) 190000, Russia
Department of Computer Science and Control Systems, Bauman Moscow State Technical University, Moscow 105005, Russia
Institute of General Genetics, Russian Academy of Science, Moscow 119333, Russia
All-Russia Rice Research Institute, Krasnodar 350921, Russia
Breeding and Seed Production Company “Agroplazma”, Krasnodar 350012, Russia
Pustovoit All-Russia Research Institute of Oil Crops, Krasnodar 350038, Russia
Authors to whom correspondence should be addressed.
Received: 20 December 2018 / Revised: 18 January 2019 / Accepted: 23 January 2019 / Published: 24 January 2019
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The phenomenon of cytoplasmic male sterility (CMS), consisting in the inability to produce functional pollen due to mutations in mitochondrial genome, has been described in more than 150 plant species. With the discovery of nuclear fertility restorer (Rf) genes capable of suppressing the CMS phenotype, it became possible to use the CMS-Rf genetic systems as the basis for practical utilization of heterosis effect in various crops. Seed production of sunflower hybrids all over the world is based on the extensive use of the PET1 CMS combined with the Rf1 gene. At the same time, data on Rf1 localization, sequence, and molecular basis for the CMS PET1 type restoration of fertility remain unknown. Searching for candidate genes of the Rf1 gene has great fundamental and practical value. Therefore, in this study, association mapping of fertility restorer gene for CMS PET1 in sunflower was performed. The genome-wide association study (GWAS) results made it possible to isolate a segment 7.72 Mb in length on chromosome 13, in which 21 candidates for Rf1 fertility restorer gene were identified, including 20 pentatricopeptide repeat (PPR)family genes and one Probable aldehyde dehydrogenase gene. The results will serve as a basis for further study of the genetic nature and molecular mechanisms of pollen fertility restoration in sunflower, as well as for further intensification of sunflower breeding. View Full-Text
Keywords: cytoplasmic male sterility; fertility restoration; sunflower; Rf1 gene; GWAS; Pentatricopeptide Repeats; PPR genes; association mapping; candidate genes cytoplasmic male sterility; fertility restoration; sunflower; Rf1 gene; GWAS; Pentatricopeptide Repeats; PPR genes; association mapping; candidate genes

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Goryunov, D.V.; Anisimova, I.N.; Gavrilova, V.A.; Chernova, A.I.; Sotnikova, E.A.; Martynova, E.U.; Boldyrev, S.V.; Ayupova, A.F.; Gubaev, R.F.; Mazin, P.V.; Gurchenko, E.A.; Shumskiy, A.A.; Petrova, D.A.; Garkusha, S.V.; Mukhina, Z.M.; Benko, N.I.; Demurin, Y.N.; Khaitovich, P.E.; Goryunova, S.V. Association Mapping of Fertility Restorer Gene for CMS PET1 in Sunflower. Agronomy 2019, 9, 49.

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