October 17, 2018

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  • Projections of RepeatExplorer graphs representing rDNA units in gnetophytes
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    Remarkable variation of ribosomal DNA organization and copy number in gnetophytes, a distinct lineage of gymnosperms

    Gnetophytes, comprising the genera Ephedra, Gnetum and Welwitschia, are an understudied, enigmatic lineage of gymnosperms with a controversial phylogenetic relationship to other seed plants. Wang et al. examined the organization of ribosomal DNA (rDNA) across representative species. Gnetophytes are distinct from other gymnosperms and angiosperms as they display surprisingly large variability in rDNA organization and […] More