VARIABILITY OF A FRAGMENT OF THE ACID VACUOLAR INVERTASE PAIN-1 GENE IN POTATO CULTIVARS

Abstract

Acid vacuolar invertase Pain-1 participates in the regulation of starch and sucrose contents in cells. This enzyme is also involved in plant response to abiotic stress. For the first time Pain-1 gene fragment (exon V – exon VII) polymorphism was determined in 19 potato varieties. A total of 25 SNPs were detected. A new SNP, С1895, was found in exon VII. Five of eight SNPs located in exons led to amino acid substitutions. Three of them were radical. It was shown that the conservative C-terminal domain contained three variable amino acids.

Keywords

• potato varieties
• acid vacuolar invertase
• allelism
• nucleotide and amino acid polymorphism