Position Effect on the Heritability of Epigenetic Silencing
Author Information
Author(s): Singh Jaswinder, Freeling Michael, Lisch Damon
Primary Institution: McGill University
Hypothesis
Can the position of transposable elements in the maize genome affect their heritability and silencing?
Conclusion
The study found that certain positions in the maize genome can reverse previously established epigenetic silencing of transposable elements.
Supporting Evidence
- Position effects have been well documented in animals and yeast, but few examples exist in plants.
- The study identified a specific position in the maize genome where transposable elements can reactivate after being silenced.
- Transposable elements in maize can be heritably silenced by a naturally occurring rearranged version of MuDR.
Takeaway
Some parts of the maize genome can change how genes are turned on or off, even if the DNA itself doesn't change.
Methodology
Classical genetic analysis was used to identify positions in the maize genome where transposable elements could be silenced or reactivated.
Limitations
The study primarily focuses on specific transposable elements in maize and may not generalize to other species.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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