Independent recruitment of a conserved developmental mechanism during leaf evolution

  title={Independent recruitment of a conserved developmental mechanism during leaf evolution},
  author={Cynthia Harrison and Susie B. Corley and E. Moylan and D. L. Alexander and R. Scotland and J. Langdale},
  • Cynthia Harrison, Susie B. Corley, +3 authors J. Langdale
  • Published 2005
  • Biology, Medicine
  • Nature
  • Vascular plants evolved in the Middle to Late Silurian period, about 420 million years ago. The fossil record indicates that these primitive plants had branched stems with sporangia but no leaves. Leaf-like lateral outgrowths subsequently evolved on at least two independent occasions. In extant plants, these events are represented by microphyllous leaves in lycophytes (clubmosses, spikemosses and quillworts) and megaphyllous leaves in euphyllophytes (ferns, gymnosperms and angiosperms). Our… CONTINUE READING

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