Expression Atlas of <i>Selaginella moellendorffii</i> Provides Insights into the Evolution of Vasculature, Secondary Metabolism, and Roots

  • Camilla Ferrari
    aMax Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany
  • Devendra Shivhare
    bSchool of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
  • Bjoern Oest Hansen
    aMax Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany
  • Asher Pasha
    cDepartment of Cell and Systems Biology/Centre for the Analysis of Genome Evolution and Function, University of Toronto, Toronto, Ontario M5S 3B2, Canada
  • Eddi Esteban
    cDepartment of Cell and Systems Biology/Centre for the Analysis of Genome Evolution and Function, University of Toronto, Toronto, Ontario M5S 3B2, Canada
  • Nicholas J. Provart
    cDepartment of Cell and Systems Biology/Centre for the Analysis of Genome Evolution and Function, University of Toronto, Toronto, Ontario M5S 3B2, Canada
  • Friedrich Kragler
    aMax Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany
  • Alisdair Fernie
    aMax Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany
  • Takayuki Tohge
    aMax Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany
  • Marek Mutwil
    aMax Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany

抄録

<jats:title>Abstract</jats:title> <jats:p>Selaginella moellendorffii is a representative of the lycophyte lineage that is studied to understand the evolution of land plant traits such as the vasculature, leaves, stems, roots, and secondary metabolism. However, only a few studies have investigated the expression and transcriptional coordination of Selaginella genes, precluding us from understanding the evolution of the transcriptional programs behind these traits. We present a gene expression atlas comprising all major organs, tissue types, and the diurnal gene expression profiles for S. moellendorffii. We show that the transcriptional gene module responsible for the biosynthesis of lignocellulose evolved in the ancestor of vascular plants and pinpoint the duplication and subfunctionalization events that generated multiple gene modules involved in the biosynthesis of various cell wall types. We demonstrate how secondary metabolism is transcriptionally coordinated and integrated with other cellular pathways. Finally, we identify root-specific genes and show that the evolution of roots did not coincide with an increased appearance of gene families, suggesting that the development of new organs does not coincide with increased fixation of new gene functions. Our updated database at conekt.plant.tools represents a valuable resource for studying the evolution of genes, gene families, transcriptomes, and functional gene modules in the Archaeplastida kingdom.</jats:p>

収録刊行物

  • The Plant Cell

    The Plant Cell 32 (4), 853-870, 2020-01-27

    Oxford University Press (OUP)

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