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 ◽  
2020 ◽  
Vol 43 (11) ◽  
pp. 1817-1828
Author(s):  
John H. Chau ◽  
Nasipi I. S. Mtsi ◽  
Zuzana Münbergová ◽  
Michelle Greve ◽  
Peter C. le Roux ◽  
...  
Keyword(s):  
Genome Size ◽  
Dna Barcode ◽  
Marion Island ◽  
Vascular Flora ◽  
Taxonomic Changes ◽  
Size Data

scholarly journals From Pixels to Picograms

2002 ◽  
Vol 50 (6) ◽  
pp. 735-749 ◽  
Author(s):  
David C. Hardie ◽  
T. Ryan Gregory ◽  
Paul D.N. Hebert
Keyword(s):  
Image Analysis ◽  
Genome Size ◽  
Genome Structure ◽  
Size Variation ◽  
Background Information ◽  
Genome Size Variation ◽  
Cell Staining ◽  
Theoretical Perspectives ◽  
C Value ◽  
Size Data

The study of genome size variation is important from a number of practical and theoretical perspectives. For example, the long-standing “C-value enigma” relating to the more than 200,000-fold range in eukaryotic genome sizes is best studied from a broad comparative standpoint. Genome size data are also required in detailed analyses of genome structure and evolution. The choice of future genome sequencing projects will be dependent on knowledge regarding the sizes of genomes to be sequenced, and so on. To date, genome size data have been acquired primarily by Feulgen microdensitometry or flow cytometry. Each has several advantages but also important limitations. In this review, we provide a practical guide to the new technique of Feulgen image analysis densitometry. The review is designed for those interested in genome size measurements but not extensively experienced in histochemistry, densitometry, or microscopy. Therefore, relevant historical and technical background information is included. For easy reference, we provide recipes for required reagents, guidelines for cell staining, and a checklist of steps for successful image analysis. We hope that the accuracy, rapidity, and cost-effectiveness of Feulgen image analysis demonstrated here will stimulate further surveys of genome sizes in a variety of taxa.

scholarly journals New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States, III

2018 ◽  
Vol 12 (1) ◽  
pp. 27-67
Author(s):  
Alan S. Weakley ◽  
Derick B. Poindexter ◽  
Richard J. LeBlond ◽  
Bruce A. Sorrie ◽  
Edwin L. Bridges ◽  
...  
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Point Of View ◽  
New Combinations ◽  
Vascular Flora ◽  
Taxonomic Changes

As part of ongoing efforts to understand and document the flora of the southeastern United States, a number of taxonomic changes at generic, specific, and infraspecific rank are made. We also discuss and clarify the recommended taxonomy for other taxa (not requiring nomenclatural acts) and present a point of view about the practical and philosophic basis for making taxonomic changes in an allegedly well-understood flora. The genera (and families) affected are Endodeca (Aristolochiaceae), Erigeron, Pityopsis, and Solidago (Asteraceae), Tillandsia (Bromeliaceae), Carex (Cyperaceae), Baptisia and Indigofera (Fabaceae), Salvia and Scutellaria (Lamiaceae), Stenanthium (Melanthiaceae), Epidendrum (Orchidaceae), and Andropogon, Coleataenia, Dichanthelium, Digitaria, and Panicum (Poaceae).

scholarly journals Studies in the vascular flora of the southeastern United States: V

2019 ◽  
Vol 13 (1) ◽  
pp. 107-129
Author(s):  
Alan S. Weakley ◽  
R. Kevan Schoonover McClelland ◽  
Richard J. LeBlond ◽  
Keith A. Bradley ◽  
James F. Matthews ◽  
...  
Keyword(s):  
United States ◽  
New Species ◽  
Conservation Status ◽  
Southeastern United States ◽  
New Combinations ◽  
Vascular Flora ◽  
The North ◽  
Taxonomic Changes ◽  
Southern Florida ◽  
A New Species

As part of ongoing efforts to understand and document the flora of the southeastern United States, we propose a number of taxonomic changes. In Trichostema, we name a new species, narrowly endemic to maritime grasslands in the Carolinas and warranting formal conservation status and action. In Dichanthelium (Poaceae), we continue the reassessment of taxa formerly recognized in Panicum and provide new combinations along with a new key to taxa in the Dichanthelium scabriusculum complex. In Paspalum (Poaceae), we address the controversial taxonomy of P. arundinaceum and P. pleostachyum and treat the two as conspecific, with P. arundinaceum the correct name. In Portulaca (Portulacaceae), we report the discovery of the Bahamian P. minuta as a native component of the North American flora, occurring in southern Florida.

Chromosome Numbers in Three Asteraceae Tribes from Inner Mongolia (China), with Genome Size Data for Cardueae

2009 ◽  
Vol 44 (3) ◽  
pp. 307-322 ◽  
Author(s):  
Ismael Sánchez-Jiménez ◽  
Jaume Pellicer ◽  
Oriane Hidalgo ◽  
Sònia Garcia ◽  
Teresa Garnatje ◽  
...  
Keyword(s):  
Genome Size ◽  
Chromosome Numbers ◽  
Inner Mongolia ◽  
Size Data

scholarly journals New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. II

2017 ◽  
Vol 11 (2) ◽  
pp. 291-325
Author(s):  
Alan S. Weakley ◽  
Derick B. Poindexter ◽  
Richard J. LeBlond ◽  
Bruce A. Sorrie ◽  
Cassandra H Karlsson ◽  
...  
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Point Of View ◽  
New Combinations ◽  
Vascular Flora ◽  
Taxonomic Changes

As part of ongoing efforts to understand and document the flora of the southeastern United States, a number of taxonomic changes at generic, specific, and infraspecific rank are made. We also discuss and clarify the recommended taxonomy for other taxa (not requiring nomenclatural acts) and present a point of view about the practical and philosophic basis for making taxonomic changes in an allegedly well-understood flora. The genera (and families) affected are Allium (Alliaceae), Erigeron, Liatris, and Trilisa (Asteraceae), Calycanthus (Calycanthaceae), Gaylussacia (Ericaceae), Dalea and Mimosa (Fabaceae), Hydrophyllum (Hydrophyllaceae), Didymoglossum (Hymenophyllaceae), Monarda (Lamiaceae), Kosteletzkya and Sida (Malvaceae), Narthecium (Nartheciaceae), Agalinis, Melampyrum, and Orobanche/Aphyllon/Myzorrhiza (Orobanchaceae), Dichanthelium and Elymus (Poaceae), Clematis (Ranunculaceae), and Maianthemum (Ruscaceae).

scholarly journals Cytological and genome size data analyzed in a phylogenetic frame: Evolutionary implications concerning Sisyrinchium taxa (Iridaceae: Iridoideae)

2018 ◽  
Vol 41 (1 suppl 1) ◽  
pp. 288-307 ◽  
Author(s):  
Paula Burchardt ◽  
Tatiana T. Souza-Chies ◽  
Olivier Chauveau ◽  
Sidia M. Callegari-Jacques ◽  
Lauís Brisolara-Corrêa ◽  
...  
Keyword(s):  
Genome Size ◽  
Size Data

scholarly journals Progress in the study of genome size evolution in Asteraceae: analysis of the last update

Database ◽  
2019 ◽  
Vol 2019 ◽  
Author(s):  
Daniel Vitales ◽  
Pol Fernández ◽  
Teresa Garnatje ◽  
Sònia Garcia
Keyword(s):  
Genome Size ◽  
Nuclear Dna ◽  
Phylogenetic Signal ◽  
Nuclear Dna Content ◽  
Dna Amount ◽  
Minor Variation ◽  
Genome Size Evolution ◽  
Size Evolution ◽  
The Family ◽  
Size Data

Abstract The Genome Size in Asteraceae Database (GSAD, http://www.asteraceaegenomesize.com) has been recently updated, with data from papers published or in press until July 2018. This constitutes the third release of GSAD, currently containing 4350 data entries for 1496 species, which represent a growth of 22.52% in the number of species with available genome size data compared with the previous release, and a growth of 57.72% in terms of entries. Approximately 6% of Asteraceae species are covered in terms of known genome sizes. The number of source papers included in this release (198) means a 48.87% increase with respect to release 2.0. The significant data increase was exploited to study the genome size evolution in the family from a phylogenetic perspective. Our results suggest that the role of chromosome number in genome size diversity within Asteraceae is basically associated to polyploidy, while dysploidy would only cause minor variation in the DNA amount along the family. Among diploid taxa, we found that the evolution of genome size shows a strong phylogenetic signal. However, this trait does not seem to evolve evenly across the phylogeny, but there could be significant scale and clade-dependent patterns. Our analyses indicate that the phylogenetic signal is stronger at low taxonomic levels, with certain tribes standing out as hotspots of autocorrelation between genome size and phylogeny. Finally, we also observe meaningful associations among nuclear DNA content on Asteraceae species and other phenotypical and ecological traits (i.e. plant habit and invasion ability). Overall, this study emphasizes the need to continue generating and analysing genome size data in order to puzzle out the evolution of this parameter and its many biological correlates.

scholarly journals New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. IV

2018 ◽  
Vol 12 (2) ◽  
pp. 461-480
Author(s):  
Alan S. Weakley ◽  
Bruce A. Sorrie ◽  
Richard J. LeBlond ◽  
Derick B. Poindexter ◽  
Aaron J. Floden ◽  
...  
Keyword(s):  
United States ◽  
Southeastern United States ◽  
New Combinations ◽  
Vascular Flora ◽  
The Family ◽  
Taxonomic Changes

As part of ongoing efforts to understand and document the flora of the southeastern United States, we propose a number of taxonomic changes and report a distributional record. In Rhynchospora (Cyperaceae), we elevate the well-marked R. glomerata var. angusta to species rank. In Dryopteris (Dryopteridaceae), we report a state distributional record for Mississippi for D. celsa, filling a range gap. In Oenothera (Onagraceae), we continue the reassessment of the Oenothera fruticosa complex and elevate O. fruticosa var. unguiculata to species rank. In Eragrostis (Poaceae), we address typification issues. In the Trilliaceae, Trillium undulatum is transferred to Trillidium, providing a better correlation of taxonomy with our current phylogenetic understanding of the family.

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