MeSH definition : A plant photo regulatory protein that exists in two forms that are reversibly interconvertible
by LIGHT. In response to light it moves to the CELL NUCLEUS and regulates transcription
of target genes. Phytochrome B plays an important role in shade avoidance and mediates
plant de-etiolation in red light.;
MeSH synonym : phyb phytochrome; phytochrome b protein; phytochrome, phyb;
A plant photo regulatory protein that exists in two forms that are reversibly interconvertible
by LIGHT. In response to light it moves to the CELL NUCLEUS and regulates transcription
of target genes. Phytochrome B plays an important role in shade avoidance and mediates
plant de-etiolation in red light.