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PHYTOCHROME INTERACTING FACTOR3 Associates with the Histone Deacetylase HDA15 in Repression of Chlorophyll Biosynthesis and Photosynthesis in Etiolated Arabidopsis Seedlings
PIF3 works with HDA15 to reduce chlorophyll production and photosynthesis in dark-grown Arabidopsis seedlings
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Abstract
PIF3 interacts with HDA15 to repress chlorophyll biosynthesis and photosynthesis in dark conditions.
- HDA15 directly interacts with PIF3 in both living organisms and laboratory settings.
- HDA15 primarily functions as a transcriptional repressor, negatively influencing gene expression related to chlorophyll and photosynthesis.
- In etiolated seedlings, HDA15 and PIF3 work together to target genes responsible for chlorophyll biosynthesis and photosynthesis.
- The repression of gene expression occurs by reducing acetylation levels and affecting RNA Polymerase II-associated transcription.
- Exposure to red light leads to the dissociation of PIF3 and HDA15 from target genes.
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