Physiological and Transcriptomic Analyses of IAA-Induced Inhibition of Chlorophyll Formation in Potato Tubers Post-Harvest.

ABSTRACT: Light exposure can induce post-harvest potato tubers to become green due to the accumulation of chlorophyll (Chl) and the formation of glycoside alkaloids, posing a potential risk to food safety. This study evaluated exogenous indole-3-acetic acid (IAA) to inhibit greening in Solanum tuberosum cv. Tongshu 31. IAA treatment maintained a relatively high a* value and significantly reduced both Chl content and the accumulation of toxic steroidal glycoalkaloids (SGAs), such as α-solanine and α-chaconine. In addition, IAA treatment also delayed the decrease in hardness and weight loss of tubers during storage, and helped maintain a high content of starch and reduce sugar. Transcriptome analysis revealed that IAA downregulated HEMA1, CHLH, and GUN4, among other

SUBMITTER: Lv H 

PROVIDER: S-EPMC12691855 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature