| Autor: |
Cao S; Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019., Kumimoto RW, Gnesutta N, Calogero AM, Mantovani R, Holt BF 3rd |
| Jazyk: |
angličtina |
| Zdroj: |
The Plant cell [Plant Cell] 2014 Mar; Vol. 26 (3), pp. 1009-17. Date of Electronic Publication: 2014 Mar 07. |
| DOI: |
10.1105/tpc.113.120352 |
| Abstrakt: |
For many plant species, reproductive success relies on the proper timing of flowering, and photoperiod provides a key environmental input. Photoperiod-dependent flowering depends on timely expression of FLOWERING LOCUS T (FT); however, the coordination of various cis-regulatory elements in the FT promoter is not well understood. Here, we provide evidence that long-distance chromatin loops bring distal enhancer elements into close association with the proximal promoter elements bound by CONSTANS (CO). Additionally, we show that NUCLEAR FACTOR Y (NF-Y) binds a CCAAT box in the distal enhancer element and that CCAAT disruption dramatically reduces FT promoter activity. Thus, we propose the recruitment model of photoperiod-dependent flowering where NF-Y complexes, bound at the FT distal enhancer element, help recruit CO to proximal cis-regulatory elements and initiate the transition to reproductive growth. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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