Center for Plant Cell Biology

Events Calendar

CEPCEB Seminar Speaker - Dr. Dmitri Nusinow

Friday, February 9, 2018
12:101 p.m.


Genomics Building
Parking Information


Dear Faculty, Postdocs, Students, and Friends:

You are cordially invited to a seminar presented by


Dmitri Nusinow


Department of Plant Biology
Donald Danforth Plant Science Center



“Uncovering a role for phyB-photobody formation in light, temperature, and circadian signaling”

DATE: Friday, February 9, 2018

 LOCATION: Genomics Auditorium, RM 1102A



Please join IIGB for a Coffee Social at 11:30, bring your Mug!


Host: Dawn Nagel



Cellular contents are organized to enable spatial control over signaling pathways, both through the formation of membrane-associated organelles and self-organized biomolecular domains. In plants, the red-light photoreceptors known as phytochromes (phys) form subnuclear, micron-sized foci called photobodies (PB) after exposure to activating red light. PBs dissipate after plants are exposed to dark, far-red light, or elevated temperatures. PB formation by phyB has been correlated with the regulation of plant growth in response to day-to-night transitions and seasonal changes in photoperiod. Despite evidence that PBs are critical for prolonged phyB signaling, whether PBs function to encapsulate active phyB or are important centers for signaling is unclear. This is due in part to limited knowledge of the structural components of photobodies. We find that PHOTOPERIOD CONTROL OF HYPOCOTYL ELONGATION 1 (PCH1) functions as a structural component of phyB-PBs and reveal that PB formation is necessary for photomorphogenesis, thermo-perception and signaling into the circadian clock in Arabidopsis thaliana. Our work extends our understanding of the role of photobodies in the control of plant physiology in response to changing environments.


Additional Information:

Open to:

General Public




Institute for Integrative Genome Biology

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University of California, Riverside
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Tel: (951) 827-1012

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Center for Plant Cell Biology
Botany & Plant Sciences Department
2150 Batchelor Hall

Tel: (951) 827-7177
Fax: (951) 827-5155
E-mail: genomics@ucr.edu