Epigenomic Changes in Immortalized Plant Cell Culture
Author Information
Author(s): Tanurdzic Milos, Vaughn Matthew W, Jiang Hongmei, Lee Tae-Jin, Slotkin R. Keith, Sosinski Bryon, Thompson William F, Doerge R. W, Martienssen Robert A
Primary Institution: Cold Spring Harbor Laboratory
Hypothesis
What are the epigenomic consequences of long-term plant cell culture?
Conclusion
Plant cells in culture show significant genetic and epigenetic instability, with some genes becoming hypermethylated while others experience hypomethylation and transcriptional activation.
Supporting Evidence
- Plant cells in culture exhibit genetic and epigenetic instability.
- Euchromatin becomes hypermethylated while heterochromatin undergoes hypomethylation.
- Transposable elements are transcriptionally activated in cultured cells.
- Small RNA profiles shift, indicating changes in RNA interference mechanisms.
- Hypermethylation of genes can lead to the formation of epialleles.
Takeaway
When plant cells are grown in a lab, they can change in ways that make them different from regular plants, sometimes becoming more like cancer cells.
Methodology
The study used chromatin immunoprecipitation and DNA methylation profiling on tiling microarrays to analyze histone and DNA modifications in Arabidopsis cell cultures.
Potential Biases
Potential bias may arise from the specific conditions of the cell culture and the methods used for analysis.
Limitations
The study primarily focuses on a single plant species, Arabidopsis, which may limit the generalizability of the findings to other species.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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