Abstract
Flowering is an essential part of the productive process, and flowering time is determined by endogenous genetic components and many ambient factors. SHORT VEGETATIVE PHASE (SVP), a MADS-box transcription factor, regulates floral transition by repressing floral integrator genes and is involved in ABA-mediated drought stress. In this study, we transformed the poplar (Populus) clone “84K” with the SVP-Like gene, while stable overexpression transgenic lines were obtained. Transcriptome analysis of the leaves of the transgenic lines and WT (Wide Type) poplars revealed that a total of 477 genes showed significantly altered expression, overexpressing SVL genes, including 342 upregulated and 135 downregulated genes. Ten subclusters in DEGs were analyzed, and KEGG terms of the largest subcluster were associated with two key pathways: hormone-related genes and glutathione metabolism. Meanwhile, many transcriptional factors were involved. Our results are helpful for in-depth analysis of the MADS transcriptional factor in poplars. This work provides the basis for studying woody plant growth, and development and molecular mechanisms responded to environmental stresses.
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