Involvement of brassinosteroid signals in the floral-induction network of Arabidopsis

The transition to flowering is known to be regulated by numerous interacting endogenous and environmental cues, of which brassinosteroids (BRs), a group of polyhydroxylated steroid phytohormones, appear to be linked to the regulation of flowering time. In Arabidopsis, BR biosynthetic det2 mutants ex...

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Veröffentlicht in:Journal of experimental botany. - 1985. - 61(2010), 15 vom: 22. Okt., Seite 4221-30
1. Verfasser: Li, Jihong (VerfasserIn)
Weitere Verfasser: Li, Yuhua, Chen, Shuyan, An, Lizhe
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Review Brassinosteroids Cholestanols Steroids, Heterocyclic brassinolide Y9IQ1L53OX
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245 1 0 |a Involvement of brassinosteroid signals in the floral-induction network of Arabidopsis 
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520 |a The transition to flowering is known to be regulated by numerous interacting endogenous and environmental cues, of which brassinosteroids (BRs), a group of polyhydroxylated steroid phytohormones, appear to be linked to the regulation of flowering time. In Arabidopsis, BR biosynthetic det2 mutants exhibited delayed flowering time by at least 10 d compared with the wild type. The levels of endogenous BRs in det2 were below 10% of the wild type. The timing of flowering was also delayed in the BR biosynthetic dwf4 and cpd mutants and in the BR-insensitive bri1 mutants. Because brassinolide (BL) and different BL precursors were over-accumulated in BR biosynthetic mutants and BR-insensitive bri1 mutants, this showed that alterations in the endogenous BL content and the level of different BL precursors affect flowering time in Arabidopsis. The late-flowering phenotypes of bri1 also showed that components of the BR signal transduction pathway affect flowering time. So far, reports on a connection between BRs and flowering time are limited. This review summarizes recent advances regarding the action of BRs in the transition to flowering 
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700 1 |a Chen, Shuyan  |e verfasserin  |4 aut 
700 1 |a An, Lizhe  |e verfasserin  |4 aut 
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