Heat-stress-induced sprouting and differential gene expression in growing potato tubers: Comparative transcriptomics with that induced by postharvest sprouting.

ABSTRACT: Crops face increased risk from heat stress due to climate change. Potato (Solanum tuberosum L.) tubers grown in hot summers often have defects including pre-harvest sprouting ("heat sprouts"). We have used 18 potato cultivars to investigate whether heat stress (HS) conditions alone could cause heat sprouting and dormancy changes in tubers. We also examined transcriptomic responses of potato to HS and whether these responses are like those induced by postharvest sprouting. We demonstrated that HS alone caused heat sprouts and shortened postharvest dormancy period, heat-sprouted tubers became dormant after harvest, and cultivars varied substantially for producing heat spouts but there was no clear association with cultivar maturity earliness. Cultivar Innovator did not show any heat sprouts

SUBMITTER: Zhang G 

PROVIDER: S-EPMC8519922 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature