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Research article - Peer-reviewed, 2016

Cryptochromes Interact Directly with PIFs to Control Plant Growth in Limiting Blue Light

Pedmale, Ullas V.; Ljung, Karin; Chory, Joanne


Sun-loving plants have the ability to detect and avoid shading through sensing of both blue and red light wavelengths. Higher plant cryptochromes (CRYs) control how plants modulate growth in response to changes in blue light. For growth under a canopy, where blue light is diminished, CRY1 and CRY2 perceive this change and respond by directly contacting two bHLH transcription factors, PIF4 and PIF5. These factors are also known to be controlled by phytochromes, the red/far-red photoreceptors; however, transcriptome analyses indicate that the gene regulatory programs induced by the different light wavelengths are distinct. Our results indicate that CRYs signal by modulating PIF activity genome wide and that these factors integrate binding of different plant photoreceptors to facilitate growth changes under different light conditions.

Published in

2016, volume: 164, number: 1-2, pages: 233-245
Publisher: CELL PRESS

Authors' information

Pedmale, Ullas V.
Salk Institute for Biological Studies
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Chory, Joanne
Salk Institute for Biological Studies

UKÄ Subject classification

Developmental Biology

Publication Identifiers


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