Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Cell, 2016-01, Vol.164 (1-2), p.233-245

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2016

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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. [Display omitted] •Arabidopsis CRY1 and CRY2 interact with phytochrome-interacting factors (PIF) 4 and 5•Genes regulated under low blue light are distinct from those regulated in low red:far-red light•CRY2 binds to common DNA regions shared with PIF4 and PIF5 Plant cryptochromes respond to limiting blue light and regulate gene expression through modulating the activity of PIF transcription factors.