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Transcriptomic analysis of the sprout-suppressive effects of rosemary essential oil on potato tubers

ABSTRACT: Postharvest sprouting of potato tubers compromises food safety and causes economic losses. This study employed RNA-seq to investigate the molecular mechanisms by which rosemary essential oil (REO) suppresses postharvest sprouting in potato tubers (cultivar 'Keshan'). Tubers were divided into two groups at the onset of storage: a control group and a group treated with REO fumigation. Transcriptomic profiles were analyzed at two time points: at day 0 (baseline) and after 40 days of storage. This design allowed for the identification of differentially expressed genes in response to both storage time and REO treatment, with a specific focus on pathways related to plant hormone signaling and carbohydrate metabolism.

ORGANISM(S): Solanum tuberosum

PROVIDER: GSE309466 | GEO | 2026/01/01

REPOSITORIES: GEO

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Project description:This is a study to characterize gene expression profiles in stored Russet Burbank potato tubers. Tubers were harvested from commercial fields in the central sands region of Wisconsin in the fall of 2006. The tubers were put into storage at 55 degrees F for preconditioning and wound healing. Shortly after the temperature of the storage bin began to decrease, uniform, healthy tubers were selected for use in this microarray analysis. Tubers were at 53.6 degrees F at this time, and pieces of starch-storing tissue were collected for use as the reference sample. Other tubers were moved to temperature-controlled lockers and these were cooled gradually to either 48 or 40 degrees F following industry standard procedures. The expectation was that tubers held at 48 degrees would not have a significant accumulation of glucose and fructose, but that tubers cooled to 40 degrees would undergo low temperature sweetening and accumulate glucose and fructose to a degree that is unsuitable for processing. Three weeks later, when the locker temperatures were 48 degrees F and 41.5 degrees F, tissue samples were collected for RNA analysis. After another three weeks, samples were collected from tubers at 48 degrees F and 40 degrees F. At that time some tubers were moved from the 48 degree locker to the 40 degree locker in order to see if gene expression changes observed as a result of gradual cooling are similar to those that occur following a sudden decrease in temperature. Three weeks later, samples were collected from tubers held at 48 degrees F, tubers held at 40 degrees F, and from the tubers that were moved from 48 to 40 degrees F. At this time another set of tubers was transferred from 48 degrees to 40 degrees. Three weeks later the last samples were harvested from tubers held at 48 degrees F, from tubers held at 48 degrees F and from tubers that were transferred three weeks prior from 48 to 40 degrees. RNA was isolated from tissue extracted from three tubers. Keywords: Reference design

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Transcriptomic analysis of the sprout-suppressive effects of rosemary essential oil on potato tubers

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