Ability to predict sunrise and estimate the length of the night and based on this
The authors compared the open metabolic signal that plants have to an alarm clock: it is setbefore going to bed to provide the right amount of energy to get through the night.
To understand how sugars change the circadian clock, the researchers measured gene expression in seedlings by altering photosynthesis or sugar storage.
They found recruitgenes that are regulated by a chemical compound: superoxide , a molecule associated with metabolic activity.Most of these genes are active in the evening: they includekey genes that act in circadian rhythms.
The authors of the study found that by suppressing superoxide production, they also suppressed the effect of sugar on these circadian clock genes in the evening.
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