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Florigen: One Found, More to Follow?
Author(s) -
Yu Xuhong,
Klejnot John,
Lin Chentao
Publication year - 2006
Publication title -
journal of integrative plant biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.734
H-Index - 83
eISSN - 1744-7909
pISSN - 1672-9072
DOI - 10.1111/j.1744-7909.2006.00309.x
Subject(s) - arabidopsis , meristem , biology , cryptochrome , gene , transcription (linguistics) , messenger rna , genetics , microbiology and biotechnology , mutant , circadian clock , linguistics , philosophy
Florigen(s) are molecules that are synthesized in response to appropriate photoperiods and transmitted from leaves to shoot apices to promote floral initiation. It has been recently discovered in Arabidopsis that mRNA of the FT gene acts as a florigen. In Arabidopsis, cryptochromes and phytochromes mediate long‐day promotion of CO protein expression, which activates FT mRNA expression in leaves. FT mRNA is transmitted to the shoot apex, where it acts together with FD to activate transcription of floral meristem identity genes, resulting in floral initiation. The discovery of the molecular nature of a florigen was a major scientific breakthrough in 2005. (Managing editor: Li‐Hui Zhao)