Phototropins do not alter accumulation of evening-phased circadian transcripts under blue light

Litthauer, S., Battle, M. W. and Jones, M. A. (2016) Phototropins do not alter accumulation of evening-phased circadian transcripts under blue light. Plant Signaling and Behavior, 11(2), e1126029. (doi:10.1080/15592324.2015.1126029) (PMID:26653107) (PMCID:PMC4883876)

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Abstract

The circadian system induces rhythmic variation in a suite of biochemical and physiological processes that serve to optimise plant growth in diel cycles. To be of greatest utility, these rhythmic behaviors are coordinated with regular environmental changes such as the rising and setting of the sun. Photoreceptors, along with metabolites produced during photosynthesis, act to synchronise the internal timing mechanism with lighting cues. We have recently shown that phototropins help maintain robust rhythms of photosynthetic operating efficiency (ϕPSII or Fq′/Fm′) under blue light, although rhythmic accumulation of morning-phased circadian transcripts in the nucleus was unaffected. Here we report that evening-phased nuclear clock transcripts were also unaffected. We also observe that rhythms of nuclear clock transcript accumulation are maintained in phototropin mutant plants under a fluctuating lighting regime that induced a loss of Fq′/Fm′ rhythms.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Jones, Dr Matt
Authors: Litthauer, S., Battle, M. W., and Jones, M. A.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
Journal Name:Plant Signaling and Behavior
Publisher:Taylor & Francis
ISSN:1559-2316
ISSN (Online):1559-2324
Published Online:14 December 2015

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