Karyotypic diversity and cryptic speciation: Have we vastly underestimated moss species diversity?

Nikisha Patel, Rafael Medina, Matthew Johnson, Bernard Goffinet

Research output: Contribution to journalArticlepeer-review

Abstract

Karyotypic diversity is critical to catalyzing change in the evolution of all plants. By resulting in meiotic incompatibility among sets of homologous chromosomes, polyploidy and aneuploidy may facilitate reproductive isolation and the potential for speciation. Across plants, karyotypic variants in the form of allopolyploids receive greater taxonomic attention relative to autopolyploids and aneuploids. In particular, the prevalence and significance of autopolyploidy and aneuploidy in bryophytes is little understood. Using Fritsch's 1991 compendium of bryophyte karyotypes with augmentation from karyological studies published since, we have quantified the prevalence of karyotypic variants among ~1500 extant morphological species of mosses. We assessed the phylogenetic distribution of karyological data, the frequency of autopolyploidy and aneuploidy, and the methodological correlates with karyotypic diversity. At least two ploidy levels were recorded from 17\% of species potenti
Original languageEnglish
Pages (from-to)150--163--150--163
JournalDefault journal
StatePublished - Jun 2021

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