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Overexpression of blueberry FLOWERING LOCUS T is associated with changes in the expression of phytohormone-related genes in blueberry plants.


ABSTRACT: Flowering locus T (FT) is a primary integrator in the regulation of plant flowering. Overexpressing a blueberry (Vaccinium corymbosum L.) FT gene (VcFT) (herein VcFT-OX) resulted in early flowering and dwarfing in 'Aurora' plants (herein 'VcFT-Aurora'). In this study, we found that VcFT-OX reduced shoot regeneration from leaf explants. To investigate the potential roles of the phytohormone pathway genes associated with VcFT-OX, differentially expressed (DE) genes in leaf tissues of 'VcFT-Aurora' plants were annotated and analyzed using non-transgenic 'Aurora' plants as a control. Three DE floral genes, including the blueberry SUPPRESSOR of Overexpression of constans 1 (VcSOC1) (gibberellin related), Abscisic acid responsive elements-binding factor 2 (VcABF2) and protein related to ABI3/VP1 (VcABI3/VP1) (ethylene-related), are present under both the phytohormone-responsive and the dwarfing-related Gene Ontology terms. The gene networks of the DE genes overall showed the molecular basis of the multifunctional aspects of VcFT overexpression beyond flowering promotion and suggested that phytohormone changes could be signaling molecules with important roles in the phenotypic changes driven by VcFT-OX.

SUBMITTER: Gao X 

PROVIDER: S-EPMC5080838 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Overexpression of blueberry <i>FLOWERING LOCUS T</i> is associated with changes in the expression of phytohormone-related genes in blueberry plants.

Gao Xuan X   Walworth Aaron E AE   Mackie Charity C   Song Guo-Qing GQ  

Horticulture research 20161026


<i>Flowering locus T</i> (<i>FT</i>) is a primary integrator in the regulation of plant flowering. Overexpressing a blueberry (<i>Vaccinium corymbosum</i> L.) <i>FT</i> gene (<i>VcFT</i>) (herein <i>VcFT</i>-OX) resulted in early flowering and dwarfing in 'Aurora' plants (herein 'VcFT-Aurora'). In this study, we found that <i>VcFT</i>-OX reduced shoot regeneration from leaf explants. To investigate the potential roles of the phytohormone pathway genes associated with <i>VcFT</i>-OX, differential  ...[more]

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