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

Ullas V. Pedmale, Shao Shan Carol Huang, Mark Zander, Benjamin J. Cole, Jonathan Hetzel, Karin Ljung, Pedro A.B. Reis, Priya Sridevi, Kazumasa Nito, Joseph R. Nery, Joseph R. Ecker, Joanne Chory

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)233-245
Number of pages13
Issue number1-2
StatePublished - Jan 14 2016

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology


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