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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
4
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pubmed:dateCreated |
2003-2-19
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pubmed:abstractText |
Photoperiodism is a day-length-dependent seasonal change of physiological or developmental activities that is widely found in plants and animals. Photoperiodic flowering in plants is regulated by photosensory receptors including the red/far-red light-receptor phytochromes and the blue/UV-A light-receptor cryptochromes. However, the molecular mechanisms underlying the specific roles of individual photoreceptors have remained poorly understood. Here, we report a study of the day-length-dependent response of cryptochrome 2 (cry2) and phytochrome A (phyA) and their role as day-length sensors in Arabidopsis. The protein abundance of cry2 and phyA showed a diurnal rhythm in plants grown in short-day but not in plants grown in long-day. The short-day-specific diurnal rhythm of cry2 is determined primarily by blue light-dependent cry2 turnover. Consistent with a proposition that cry2 and phyA are the major day-length sensors in Arabidopsis, we show that phyA mediates far-red light promotion of flowering with modes of action similar to that of cry2. Based on these results and a finding that the photoperiodic responsiveness of plants depends on light quality, a model is proposed to explain how individual phytochromes and cryptochromes work together to confer photoperiodic responsiveness in Arabidopsis.
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pubmed:grant |
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10069829,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10207133,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10221900,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10469647,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10476075,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10583960,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10583961,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10611956,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10631258,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-10806223,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-11089975,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-11118138,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-11323677,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-11726930,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-11743105,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-12045278,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-12239570,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-16593800,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-1896021,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-7732376,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-8364355,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-8439743,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-8453299,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-8974397,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9478898,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9482948,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9490743,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9649544,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9724694,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9729166,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9733522,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9733523,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12578985-9881166
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Arabidopsis Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/CRY1 protein, Arabidopsis,
http://linkedlifedata.com/resource/pubmed/chemical/Cryptochromes,
http://linkedlifedata.com/resource/pubmed/chemical/Drosophila Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Eye Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Flavoproteins,
http://linkedlifedata.com/resource/pubmed/chemical/Phytochrome,
http://linkedlifedata.com/resource/pubmed/chemical/Receptors, G-Protein-Coupled,
http://linkedlifedata.com/resource/pubmed/chemical/cryptochrome protein, Drosophila
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0027-8424
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
18
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pubmed:volume |
100
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2140-5
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pubmed:dateRevised |
2010-9-14
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pubmed:meshHeading |
pubmed-meshheading:12578985-Arabidopsis,
pubmed-meshheading:12578985-Arabidopsis Proteins,
pubmed-meshheading:12578985-Circadian Rhythm,
pubmed-meshheading:12578985-Cryptochromes,
pubmed-meshheading:12578985-Drosophila Proteins,
pubmed-meshheading:12578985-Eye Proteins,
pubmed-meshheading:12578985-Flavoproteins,
pubmed-meshheading:12578985-Light,
pubmed-meshheading:12578985-Photoperiod,
pubmed-meshheading:12578985-Photoreceptor Cells, Invertebrate,
pubmed-meshheading:12578985-Phytochrome,
pubmed-meshheading:12578985-Receptors, G-Protein-Coupled
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pubmed:year |
2003
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pubmed:articleTitle |
Regulation of photoperiodic flowering by Arabidopsis photoreceptors.
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pubmed:affiliation |
Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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