Abstract:
:Vernalization is the promotion of flowering in response to prolonged exposure to low temperatures. In Arabidopsis, FLOWERING LOCUS C (FLC), a suppressor of flowering, is repressed by low temperatures but the mechanism leading to the initial decrease in FLC transcription remains a mystery. No mutants that block the repression of FLC at low temperatures have been identified to date. If the failure to identify such a mutant is assumed to imply that no such mutant exists, then it follows that the first response to the drop in temperature is physical, not genetic. In this Opinion article we propose that the drop in temperature first causes a simple change in the topology of the chromatin polymer, which in turn initiates the repression of FLC transcription.
journal_name
Trends Plant Scijournal_title
Trends in plant scienceauthors
Helliwell CA,Anderssen RS,Robertson M,Finnegan EJdoi
10.1016/j.tplants.2014.12.004subject
Has Abstractpub_date
2015-02-01 00:00:00pages
76-82issue
2eissn
1360-1385issn
1878-4372pii
S1360-1385(14)00315-Xjournal_volume
20pub_type
杂志文章,评审abstract::Vacuoles receive their proteins through the secretory pathway, this requires protein sorting signals and molecular machineries that, until recently, have been believed to be markedly distinct for lytic and storage vacuoles. However, new biochemical, morphological and genetic data indicate that the only known class of ...
journal_title:Trends in plant science
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