• Gymnosperms are a group of land plants comprising the extant taxa, cycads, Ginkgo , gnetophytes and conifers. (nature.com)
  • EDGE is applied to gymnosperms using a phylogenetic tree comprising DNA sequence data for 85% of gymnosperm species (923 out of 1090 species), to which the 167 missing species were added, and IUCN Red List assessments available for 92% of species. (nature.com)
  • Gymnosperms are among the most threatened living organisms on the planet, with 40% of their species at high risk of extinction, which is about twice as many as the most recent estimates for all plants (i.e. 21.4%) 1 . (nature.com)
  • Which species (and areas) should be prioritised in conservation programmes is a recurrent question, but even more so in groups with such high number of threatened species such as gymnosperms. (nature.com)
  • We re-evaluated cycads in the present study in the context of all gymnosperms, augmenting the genetic coverage from 58% to 80% of species. (nature.com)
  • The wealth of genetic data available for gymnosperms, their relatively well-known taxonomy and geographical distributions, and the fact that most species have been evaluated using the IUCN Red List criteria, make this group an ideal candidate for the application of the EDGE method. (nature.com)
  • Thus, no full genome sequence of a gymnosperm species is available at present, whereas 30 angiosperm and more basal plant genomes have been sequenced. (nature.com)
  • Here we present the draft assembly of the 20-gigabase genome of Norway spruce ( Picea abies ), the first available for any gymnosperm. (nature.com)
  • Gymnosperms first appeared more than 300 million years ago (Myr ago) 1 , well before the angiosperm lineage separated from the stem group of extant gymnosperms 2 . (nature.com)