Exploring the History of Chloroplast Capture in Arabis Using Whole Chloroplast Genome Sequencing

International Journal of Molecular Sciences
Akira KawabeHazuka Y Furihata

Abstract

Chloroplast capture occurs when the chloroplast of one plant species is introgressed into another plant species. The phylogenies of nuclear and chloroplast markers from East Asian Arabis species are incongruent, which indicates hybrid origin and shows chloroplast capture. In the present study, the complete chloroplast genomes of A. hirsuta, A. nipponica, and A. flagellosa were sequenced in order to analyze their divergence and their relationships. The chloroplast genomes of A. nipponica and A. flagellosa were similar, which indicates chloroplast replacement. If hybridization causing chloroplast capture occurred once, divergence between recipient species would be lower than between donor species. However, the chloroplast genomes of species with possible hybrid origins, A. nipponica and A. stelleri, differ at similar levels to possible maternal donor species A. flagellosa, which suggests that multiple hybridization events have occurred in their respective histories. The mitochondrial genomes exhibited similar patterns, while A. nipponica and A. flagellosa were more similar to each other than to A. hirsuta. This suggests that the two organellar genomes were co-transferred during the hybridization history of the East Asian Arabis s...Continue Reading

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Citations

Oct 13, 2018·International Journal of Molecular Sciences·Bartolomé Sabater

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Datasets Mentioned

BETA
LC361349-51
AP009373

Software Mentioned

velvet
VISTA
MEGA
OGDRAW
mVISTA

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