These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Kiwifruit SVP2 controls developmental and drought-stress pathways.
    Author: Wu R, Wang T, Warren BAW, Thomson SJ, Allan AC, Macknight RC, Varkonyi-Gasic E.
    Journal: Plant Mol Biol; 2018 Feb; 96(3):233-244. PubMed ID: 29222611.
    Abstract:
    Genome-wide targets of Actinidia chinensis SVP2 confirm roles in ABA- and dehydration-mediated growth repression and reveal a conservation in mechanism of action between SVP genes of taxonomically distant Arabidopsis and a woody perennial kiwifruit. The molecular mechanisms underlying growth and dormancy in woody perennials are largely unknown. In Arabidopsis, the MADS-box transcription factor SHORT VEGETATIVE PHASE (SVP) plays a key role in the progression from vegetative to floral development, and in woody perennials SVP-like genes are also proposed to be involved in controlling dormancy. During kiwifruit development SVP2 has a role in growth inhibition, with high-chill kiwifruit Actinidia deliciosa transgenic lines overexpressing SVP2 showing suppressed bud outgrowth. Transcriptomic analyses of these plants suggests that SVP2 mimics the well-documented abscisic acid (ABA) effect on the plant dehydration response. To corroborate the growth inhibition role of SVP2 in kiwifruit development at the molecular level, we analysed the genome-wide direct targets of SVP2 using chromatin immunoprecipitation followed by high-throughput sequencing in kiwifruit A. chinensis. SVP2 was found to bind to at least 297 target sites in the kiwifruit genome, and potentially modulates 252 genes that function in a range of biological processes, especially those involved in repressing meristem activity and ABA-mediated dehydration pathways. In addition, our ChIP-seq analysis reveals remarkable conservation in mechanism of action between SVP genes of taxonomically distant plant species.
    [Abstract] [Full Text] [Related] [New Search]