Association Mapping of Fertility Restorer Gene for CMS PET1 in Sunflowerстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 октября 2019 г.
Аннотация:The phenomenon of cytoplasmic male sterility (CMS), consisting in the inability to producefunctional pollen due to mutations in mitochondrial genome, has been described in more than150 plant species. With the discovery of nuclear fertility restorer (Rf) genes capable of suppressingthe CMS phenotype, it became possible to use the CMS-Rf genetic systems as the basis for practicalutilization of heterosis effect in various crops. Seed production of sunflower hybrids all over theworld is based on the extensive use of the PET1 CMS combined with the Rf1 gene. At the sametime, data on Rf1 localization, sequence, and molecular basis for the CMS PET1 type restorationof fertility remain unknown. Searching for candidate genes of the Rf1 gene has great fundamentaland practical value. Therefore, in this study, association mapping of fertility restorer gene for CMSPET1 in sunflower was performed. The genome-wide association study (GWAS) results made itpossible to isolate a segment 7.72 Mb in length on chromosome 13, in which 21 candidates for Rf1fertility restorer gene were identified, including 20 pentatricopeptide repeat (PPR)family genes andone Probable aldehyde dehydrogenase gene. The results will serve as a basis for further study of thegenetic nature and molecular mechanisms of pollen fertility restoration in sunflower, as well as forfurther intensification of sunflower breeding.