Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 18, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/ijms18122680
Keywords
carbohydrate; circadian clock gene; circadian rhythms; crop productivity; diurnal regulation; metabolism; photoperiodic control
Funding
- Research Program for Agricultural Science & Technology Development, National Academy of Agricultural Science [PJ01247203]
- Rural Development Administration, Republic of Korea, BioGreen 21 Program [PJ01106902]
- Bio & Medical Technology Development Program of the NRF by the Korean government [NRF-2015M3A9A5031107]
- National Research Foundation of Korea [2015M3A9A5031107] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Carbohydrates are the primary energy source for plant development. Plants synthesize sucrose in source organs and transport them to sink organs during plant growth. This metabolism is sensitive to environmental changes in light quantity, quality, and photoperiod. In the daytime, the synthesis of sucrose and starch accumulates, and starch is degraded at nighttime. The circadian clock genes provide plants with information on the daily environmental changes and directly control many developmental processes, which are related to the path of primary metabolites throughout the life cycle. The circadian clock mechanism and processes of metabolism controlled by the circadian rhythm were studied in the model plant Arabidopsis and in the crops potato and rice. However, the translation of molecular mechanisms obtained from studies of model plants to crop plants is still difficult. Crop plants have specific organs such as edible seed and tuber that increase the size or accumulate valuable metabolites by harvestable metabolic components. Human consumers are interested in the regulation and promotion of these agriculturally significant crops. Circadian clock manipulation may suggest various strategies for the increased productivity of food crops through using environmental signal or overcoming environmental stress.
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