The Evolutionary History of New Zealand Deschampsia Is Marked by Long-Distance Dispersal, Endemism, and Hybridization

The contrasting evolutionary histories of endemic versus related cosmopolitan species provide avenues to understand the spatial drivers and limitations of biodiversity. Here, we investigated the evolutionary history of three New Zealand endemic species, and how they are related to cosmopolitan . We...

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Published inBiology (Basel, Switzerland) Vol. 10; no. 10; p. 1001
Main Authors Xue, Zhiqing, Greimler, Josef, Paun, Ovidiu, Ford, Kerry A, Barfuss, Michael H J, Chiapella, Jorge O
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 05.10.2021
MDPI
Subjects
Biodiversity
Cold
Deoxyribonucleic acid
Deschampsia
Dispersal
DNA
DNA sequencing
Endemic species
endemics
Evolution
Gene flow
Genomes
Hybridization
Islands
Miocene
Morphology
New Zealand
plastid sequences
Pliocene
Population
RADseq
Sampling
New Zealand
Austria
Australia
Eurasia
Deschampsia
New Zealand
morphology
RADseq
hybridization
endemics
plastid sequences
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Summary:The contrasting evolutionary histories of endemic versus related cosmopolitan species provide avenues to understand the spatial drivers and limitations of biodiversity. Here, we investigated the evolutionary history of three New Zealand endemic species, and how they are related to cosmopolitan . We used RADseq to test species delimitations, infer a dated species tree, and investigate gene flow patterns between the New Zealand endemics and the populations of New Zealand, Australia and Korea. Whole plastid DNA analysis was performed on a larger worldwide sampling. Morphometrics of selected characters were applied to New Zealand sampling. Our RADseq review of over 55 Mbp showed the endemics as genetically well-defined from each other. Their last common ancestor with lived during the last ten MY. The New Zealand appears in a clade with Australian and Korean samples. Whole plastid DNA analysis revealed the endemics as members of a southern hemisphere clade, excluding the extant of New Zealand. Both data provided strong evidence for hybridization between and . Our findings provide evidence for at least two migration events of the genus to New Zealand and hybridization between and endemic taxa.
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ISSN:2079-7737
2079-7737
DOI:10.3390/biology10101001