Genome-wide association study identifies candidate genes for glycoalkaloid biosynthesis in tetraploid potato (Solanum tuberosum L.) tubers.

ABSTRACT:

Background

Steroidal glycoalkaloids (SGAs), derived from cholesterol, act as natural defenses against pathogens and pests. In cultivated potatoes, α-solanine and α-chaconine are the primary SGAs, distributed throughout the plant, with their biosynthesis mechanisms differing across various tissues. The variation in SGAs content between the cortex and perimedullary zone reflects tissue-specific metabolic regulation in potato tuber. Higher SGAs levels in the cortex may enhance defense against external threats. This spatial distribution provides a theoretical basis for breeding strategies aimed at balancing resistance and food quality by regulating SGAs accumulation in specific tissues of potato tubers. Excessive levels of SGAs in potato tubers can compromise both their quality and edi

SUBMITTER: Zhou X 

PROVIDER: S-EPMC12121109 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature