Publications by authors named "Sukjoon Jung"
The circadian clock regulates the daily pattern of temporal gene expression. In Arabidopsis, aging is associated with a shortening of the endogenous period of circadian rhythms under circadian conditions. However, the functional link between the circadian clock and aging under diurnal conditions and its physiological relevance remain elusive.
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- Leaf senescence is a crucial process that influences plant fitness, with variations observed in plants from different environments.
- A study involving 259 natural accessions of Arabidopsis revealed links between leaf senescence, genetic factors, and environmental conditions, highlighting the adaptive significance of this trait.
- The research identified a new genetic locus, GVS1, which plays a key role in leaf senescence responses, showing that variations in this gene affect how plants cope with developmental and environmental challenges.
Leaf senescence is regulated by diverse developmental and environmental factors to maximize plant fitness. The red to far-red light ratio (R:FR) detected by plant phytochromes is reduced under vegetation shade, thus initiating leaf senescence. However, the role of phytochromes in promoting leaf senescence under FR-enriched conditions is not fully understood.
View Article and Find Full Text PDFCircadian control of by PRR9 positively regulates leaf senescence in .
Proc Natl Acad Sci U S A
August 2018
The circadian clock coordinates the daily cyclic rhythm of numerous biological processes by regulating a large portion of the transcriptome. In animals, the circadian clock is involved in aging and senescence, and circadian disruption by mutations in clock genes frequently accelerates aging. Conversely, aging alters circadian rhythmicity, which causes age-associated physiological alterations.
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- Leaf senescence, or the aging of leaves, is shaped by their life history and involves complex interactions between genetics and the environment.
- Researchers have developed a new tool called the phenome high-throughput investigator (PHI) to analyze leaf lifespan and senescence at a single-leaf level, which has shown promising results in measuring responses to aging factors and genetic mutations.
- The integration of data from PHI with other biological studies (like transcriptomics and proteomics) aims to deepen our understanding of the mechanisms behind leaf senescence, moving from molecular details to insights about the organism as a whole.