RT Journal Article
T1 An update on the indigenous vascular flora of sub-Antarctic Marion Island: taxonomic changes, sequences for DNA barcode loci, and genome size data
A1 Chau, John
A1 Mtsi, Nasipi
A1 Münbergová, Zuzana
A1 Greve, Michelle
A1 Roux, Peter
A1 Mairal Pisa, Mario José
A1 Roux, Johannes
A1 Dorrington, Rosemary
A1 Jansen van Vuuren, Bettine
AB The flora of sub-Antarctic Marion Island forms part of the unique South Indian Ocean Biogeographic Province, and is under threat from climate change and invasive species. Current information on the flora is necessary to rapidly identify and manage future changes. We conducted a literature search on the taxonomy of indigenous vascular plant species on Marion Island and found nomenclatural changes following taxonomic revisions for Austroblechnum penna-marina (Poir.) Gasper & V.A.O.Dittrich, Carex dikei (Nelmes) K.L.Wilson, Leptinella plumosa Hook.f., Notogrammitis crassior (Kirk) Parris, Phlegmariurus saururus (Lam.) B.Øllg., and Polypogon magellanicus (Lam.) Finot. Additionally, Ranunculus moseleyi Hook.f. was removed from our species checklist due to its long absence in floristic surveys, leaving 21 species in the indigenous vascular plant flora present on Marion Island. We also amplified and sequenced the universal plant barcoding loci rbcL and matK for 19 and 13 species, respectively, and found that ample interspecific genetic distance and minimal intraspecific genetic distance allowed for easy discrimination between species. Lastly, we obtained genome size estimates using flow cytometry for 12 species. Mean 2C genome size for species on Marion Island ranged from 0.44 to 21.44 pg, which is on the lower end of the known range for vascular plant species. We detected two distinct cytotypes in Poa cookii (Hook.f.) Hook.f. and one cytotype in all other species measured.
PB Springer Nature
SN 0722-4060
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/99429
UL https://hdl.handle.net/20.500.14352/99429
LA eng
NO Chau, John H., et al. «An Update on the Indigenous Vascular Flora of Sub-Antarctic Marion Island: Taxonomic Changes, Sequences for DNA Barcode Loci, and Genome Size Data». Polar Biology, vol. 43, n.o 11, noviembre de 2020, pp. 1817-28. https://doi.org/10.1007/s00300-020-02747-7.
NO South African National Research Foundation
NO South African Department of Environmental Affairs
NO University of Johannesburg
NO Stellenbosch University
NO Czech Academy of Sciences
NO Ministry of Education, Youth and Sports (Czech Republic)
DS Docta Complutense
RD 14 jun 2025