Effects of Trichostatin A and 5-Azacytidine on Histone and DNA Modifications in Maize
Author Information
Author(s): Yang Fei, Zhang Lu, Li Jun, Huang Jing, Wen Ruoyu, Ma Lu, Zhou Dongfeng, Li Lijia
Primary Institution: Key laboratory of MOE for Plant Developmental Biology, College of Life Sciences, Wuhan University
Hypothesis
This study investigates the relationship between histone H4 acetylation, DNA methylation, and histone H3 dimethylation during mitosis in maize root meristems.
Conclusion
Both Trichostatin A and 5-Azacytidine treatments lead to increased histone H4 acetylation and decreased DNA and H3K9 methylation, affecting mitotic progression in maize root tips.
Supporting Evidence
- TSA treatment increased global histone H4 acetylation and decreased H3K9 dimethylation.
- 5-AC treatment also increased H4 acetylation and decreased DNA methylation.
- Both treatments caused chromatin decondensation in maize root tip cells.
- Mitotic indices significantly decreased after TSA and 5-AC treatments.
Takeaway
The study shows that certain treatments can change how DNA and proteins in cells are modified, which can affect how cells divide.
Methodology
The study used micrococcal nuclease assays, western blots, and immunostaining to analyze chromatin modifications and mitotic indices.
Statistical Information
P-Value
0.0057 for TSA, 0.0035 for 5-AC
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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