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EARLY BUD-BREAK 1 and EARLY BUD-BREAK 3 control resumption of poplar growth after winter dormancy

Author

Listed:
  • Abdul Azeez

    (Michigan Technological University)

  • Yiru Chen Zhao

    (Michigan Technological University)

  • Rajesh Kumar Singh

    (Swedish University of Agricultural Sciences
    CSIR-Institute of Himalayan Bioresource Technology)

  • Yordan S. Yordanov

    (Michigan Technological University
    Eastern Illinois University)

  • Madhumita Dash

    (Michigan Technological University)

  • Pal Miskolczi

    (Swedish University of Agricultural Sciences)

  • Katja Stojkovič

    (Swedish University of Agricultural Sciences)

  • Steve H. Strauss

    (Oregon State University)

  • Rishikesh P. Bhalerao

    (Swedish University of Agricultural Sciences)

  • Victor B. Busov

    (Michigan Technological University)

Abstract

Bud-break is an economically and environmentally important process in trees and shrubs from boreal and temperate latitudes, but its molecular mechanisms are poorly understood. Here, we show that two previously reported transcription factors, EARLY BUD BREAK 1 (EBB1) and SHORT VEGETATIVE PHASE-Like (SVL) directly interact to control bud-break. EBB1 is a positive regulator of bud-break, whereas SVL is a negative regulator of bud-break. EBB1 directly and negatively regulates SVL expression. We further report the identification and characterization of the EBB3 gene. EBB3 is a temperature-responsive, epigenetically-regulated, positive regulator of bud-break that provides a direct link to activation of the cell cycle during bud-break. EBB3 is an AP2/ERF transcription factor that positively and directly regulates CYCLIND3.1 gene. Our results reveal the architecture of a putative regulatory module that links temperature-mediated control of bud-break with activation of cell cycle.

Suggested Citation

  • Abdul Azeez & Yiru Chen Zhao & Rajesh Kumar Singh & Yordan S. Yordanov & Madhumita Dash & Pal Miskolczi & Katja Stojkovič & Steve H. Strauss & Rishikesh P. Bhalerao & Victor B. Busov, 2021. "EARLY BUD-BREAK 1 and EARLY BUD-BREAK 3 control resumption of poplar growth after winter dormancy," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21449-0
    DOI: 10.1038/s41467-021-21449-0
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