How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and
Enhanced Photosynthesis and- Cell Memory
Mechanism Discovered [(Science Daily (Aug. 6, 2013)- Science daily (Aug. 15, 2013 )]
Carolina Carvajal MirandaMedicine Student
Universidad Pontificia BolivarianaMedellín
FOLDING
MARTINEZ S., Lina Maria. Biologia molecular. 5. ed. Medellin: UPB. Fac. de Medicina, 2009.265 p.
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and Enhanced Photosynthesis -Science Daily- (Aug. 6, 2013) H.-S. Jung, P. A. Crisp, G. M. Estavillo, B. Cole, F. Hong, T. C. Mockler, B. J. Pogson, J. Chory. Subset of heat-shock transcription factors required for the early response of Arabidopsis to excess light. Proceedings of the National Academy of Sciences, 2013; Cell Memory Mechanism Discovered Science daily (Aug. 15, 2013 )-ScienceDaily- Jian Yan, Martin Enge, Thomas Whitington, Kashyap Dave, Jianping Liu, Inderpreet Sur, Bernhard Schmierer, Arttu Jolma, Teemu Kivioja, Minna Taipale, Jussi Taipale. Transcription Factor Binding in Human Cells Occurs in Dense Clusters Formed around Cohesin Anchor Sites.
FOLDING
Stress-related proteins explain how plants avoid sunburn in intense light.
Mechanism for cellular memory:COHESIN
INTRODUCTION
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and
Enhanced PhotosynthesisScience Daily (Aug. 6, 2013)
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and
Enhanced Photosynthesis
Quantity and fluctuation of light conditions cause stress to plants.
Transcription Factors are responsible for fast response to changes in light.
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and
Enhanced Photosynthesis
Regulation in nuclear gene expression and intracellular signaling pathways genomic response to stress
Enzyme detoxifies harmful molecules, which accumulate under very bright light.
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and
Enhanced Photosynthesis
Study of short-term and long-term response factors
Generate plants with increased protection from light and enhanced photosynthesis.
OBSERVATION
In my opinion the importance of this study is directly implicated in the capacity of this organism to eliminate harmful sustances. Future investigations should be centered on the nuclear regulation of gene expressions. I also consider, the posibility of applying this knowlege in the therapeutic field.
Cell Memory Mechanism Discovered
Science daily (Aug. 15, 2013 )
Cell Memory Mechanism Discovered
Regulatory DNA sequences
Transcription factors
Binds to sequences
Expresion of proteins
It is critical that the pattern of transcription factor binding in the genome be maintained.
Cell Memory Mechanism Discovered
Transcription factors find original binding region on DNA strands.
large protein complex positioned as a ring around the two DNA strands
Marks places where transcription factors were bound.
Indicator of sequences that contain mutations
COHESIN:
Cell Memory Mechanism Discovered
Cell Memory Mechanism Discovered
Complete map of transcription factors
Analisis of DNA sequences that bind to cohesin:
Mutations
Cell Memory Mechanism Discovered
Analyse DNA sequences that are located in genes (3% of genome)
DNA sequences that bind to cohesin(1% of genome).
Most Mutations (Cancer) are outside genes.
OBSERVATION
I think this research has an important impact in the biological study of the genome, I consider the cohesin to be a crucial marker in the transcription of specific secuences that can be monitor to explain certain mutations, as well, it plays an important role to create a new investigation base that can be used to develop future therapys in hereditary conditions.
MEDICAL UTILITY
MEDICAL UTILITY
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and Enhanced
Photosynthesis
Generation of plants with increased protection from light with enhanced photosynthesis rates that benefit population by decreasing air contamination.
MEDICAL UTILITYCell Memory Mechanism Discovered
Facilitate the identification and analysis of specific mutations, and in future view, bring hope for cancer and hereditary deseased patients.
BIBLIOGRAPHY MARTINEZ S., Lina Maria. Biologia molecular. 5. ed. Medellin: UPB. Fac. de Medicina, 2009.265 p.
How Plants Avoid Sunburn: Findings Could Lead to Crops With Increased Protection from Bright Light and Enhanced Photosynthesis -Science Daily- (Aug. 6, 2013) H.-S. Jung, P. A. Crisp, G. M. Estavillo, B. Cole, F. Hong, T. C. Mockler, B. J. Pogson, J. Chory. Subset of heat-shock transcription factors required for the early response of Arabidopsis to excess light. Proceedings of the National Academy of Sciences, 2013; DOI:
Cell Memory Mechanism Discovered Science daily (Aug. 15, 2013 )-ScienceDaily- Jian Yan, Martin Enge, Thomas Whitington, Kashyap Dave, Jianping Liu, Inderpreet Sur, Bernhard Schmierer, Arttu Jolma, Teemu Kivioja, Minna Taipale, Jussi Taipale. Transcription Factor Binding in Human Cells Occurs in Dense Clusters Formed around Cohesin Anchor Sites. Cell, 2013; 154 (4): 801 DOI: