Publication Date:
2005-11-15
Description:
Plants commonly use photoperiod (day length) to control the timing of flowering during the year, and variation in photoperiod response has been selected in many crops to provide adaptation to different environments and farming practices. Positional cloning identified Ppd-H1, the major determinant of barley photoperiod response, as a pseudo-response regulator, a class of genes involved in circadian clock function. Reduced photoperiod responsiveness of the ppd-H1 mutant, which is highly advantageous in spring-sown varieties, is explained by altered circadian expression of the photoperiod pathway gene CONSTANS and reduced expression of its downstream target, FT, a key regulator of flowering.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turner, Adrian -- Beales, James -- Faure, Sebastien -- Dunford, Roy P -- Laurie, David A -- New York, N.Y. -- Science. 2005 Nov 11;310(5750):1031-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Crop Genetics Department, John Innes Centre, Norwich Research Park, Colney, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16284181" target="_blank"〉PubMed〈/a〉
Keywords:
Alleles
;
Circadian Rhythm
;
Cloning, Molecular
;
Crosses, Genetic
;
Flowers/physiology
;
Gene Expression Profiling
;
Gene Expression Regulation, Plant
;
*Genes, Plant
;
Hordeum/genetics/*physiology
;
Molecular Sequence Data
;
Mutation
;
*Photoperiod
;
Plant Proteins/chemistry/genetics/*physiology
;
Polymerase Chain Reaction
;
Polymorphism, Single Nucleotide
;
Protein Structure, Tertiary
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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