English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background  Potato frying color is an agronomic trait influenced by the sugar content of tubers. The candidate gene approach was employed to elucidate the molecular basis of this trait in  Solanum tuberosum  Group Phureja, which is mainly diploid and represents an important genetic resource for potato breeding. The objective of this research was to identify novel genetic variants related with frying quality in loci with key functions in carbohydrate metabolism, with the purpose of discovering genetic variability useful in breeding programs. Therefore, an association analysis was implemented with 109 SNP markers identified in ten candidate genes.    Results  The analyses revealed four associations in the locus  InvGE  coding for an apoplastic invertase and one association in the locus  SssI  coding for a soluble starch synthase. The SNPs  SssI - C    45711901    T  and  InvGE - C    2475454    T  were associated with sucrose content and frying color, respectively, and were not found previously in tetraploid genotypes. The rare haplotype  InvGE - A    2475187    C    2475295    A    2475344   was associated with higher fructose contents. Our study allowed a more detailed analysis of the sequence variation of exon 3 from  InvGE , which was not possible in previous studies because of the high frequency of insertion-deletion polymorphisms in tetraploid potatoes.    Conclusion  The association mapping strategy using a candidate gene approach in Group Phureja allowed the identification of novel SNP markers in  InvGE  and  SssI  associated with frying color and the tuber sugar content measured by High Performance Liquid Chromatography (HPLC). These novel associations might be useful in potato breeding programs for improving quality traits and to increase crop genetic variability. The results suggest that some genes involved in the natural variation of tuber sugar content and frying color are conserved in both Phureja and tetraploid germplasm. Nevertheless, the associated variants in both types of germplasm were present in different regions of these genes. This study contributes to the understanding of the genetic architecture of tuber sugar contents and frying color at harvest in Group Phureja.    Electronic supplementary material  The online version of this article (doi:10.1186/s12863-017-0489-3) contains supplementary material, which is available to authorized users.

Novel SNP markers in InvGE and SssI genes are associated with natural variation of sugar contents and frying color in Solanum tuberosum Group Phureja