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The role of the Populus FT genes in the regulation of tree growth.
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In annual plants, flowering related genes were initially thought to have the only function to coordinate and execute reproductive development. In perennial species like poplar, however, it became clear that these genes seem to have acquired additional functions in the regulation of the yearly growth cycle. The two poplar orthologs of the Arabidopsis “florigen” FLOWERING LOCUS T (FT), PtFT1 and PtFT2, are associated with flowering as well as other aspects of phenology. After duplication they have diverged in expression pattern, and maybe also in function and their gene regulatory networks. In this study I have characterized the role of PtFT1 and PtFT2 during the yearly growth cyle, as well as the interaction between, FT-like genes, poplar homologs of the Arabidopsis flowering time repressor TFL1 and PHYTOCHROME A in the regulation of tree flowering. The preliminary data show new unexpected functional relations between these genes and new previously undescribed effects on plant growth and development.

Place, publisher, year, edition, pages
2014.
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-95995OAI: oai:DiVA.org:umu-95995DiVA: diva2:762183
External cooperation
SLU, Inst för skoglig genetik och växtfysiologi
Supervisors
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Available from: 2014-11-10 Created: 2014-11-10 Last updated: 2014-11-10Bibliographically approved

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