Exploring the generic delimitation of Phyllagathis and Bredia (Melastomataceae): A combined nuclear and chloroplast DNA analysis

2018 ◽  
Vol 57 (3) ◽  
pp. 256-267 ◽  
Author(s):  
Qiu‐Jie Zhou ◽  
Che‐Wei Lin ◽  
Jin‐Hong Dai ◽  
Ren‐Chao Zhou ◽  
Ying Liu
Keyword(s):  
Chloroplast Dna ◽  
Dna Analysis ◽  
Generic Delimitation

Proteus in Australia. An overview of the current state of taxonomy of the Australian Proteaceae

1998 ◽  
Vol 11 (4) ◽  
pp. 257 ◽  
Author(s):  
Alex S. George
Keyword(s):  
World Wide ◽  
Dna Analysis ◽  
Field Work ◽  
Flora Of Australia ◽  
Developmental Anatomy ◽  
Generic Delimitation ◽  
Current State ◽  
Species Complexes ◽  
Accurate Picture ◽  
Variable Species

With the Proteaceae completed for the ‘Flora of Australia’, we now have a reasonably accurate picture of its alpha systematics. Currently the family world-wide contains some 1769 species in 80 genera. In Australia there are 1093 species (c. 61.7 % of the world total) in 46 genera (57.5 %); about 99% of the species are endemic. Where do we go now? For many small genera (e.g. Franklandia, Austromuellera) the alpha taxonomy is settled, but in some small and all larger genera further research at specific and infrageneric level is needed, especially into highly variable ‘species’ (e.g. Banksia marginata) and species-complexes (e.g. the Grevillea biternata group). Much field work is required for some groups, not only to explore under-collected areas (where new taxa will undoubtedly be found) but also to study variation and such aspects as root systems, response to fire, seedlings, flower and fruit development, predation, seed dispersal and dormancy. There will be some further refinement of generic delimitation. Phylogenetic relationships and infrageneric classifications require further elucidation; even well studied genera (e.g. Banksia) contain problematic taxa. This will involve new data from such fields as anatomy (including developmental anatomy), molecular studies, DNA analysis and gene sequencing. As data improve, so will understanding world-wide relationships. Despite the use of computer technology, intuition and interpretation will continue to generate different classifications and evolutionary models.

Chloroplast DNA analysis of Tunisian pistachio (Pistacia vera L.): Sequence variations of the intron trnL (UAA)

2015 ◽  
Vol 191 ◽  
pp. 57-64 ◽  
Author(s):  
Choulak Sarra ◽  
Rhouma-Chatti Soumaya ◽  
Marzouk Zined ◽  
Said Khaled ◽  
Chatti Noureddine ◽  
...  
Keyword(s):  
Chloroplast Dna ◽  
Dna Analysis ◽  
Pistacia Vera ◽  
Sequence Variations

Diversity and systematics ofDeschampsia sensu lato (Poaceae), inferred from karyotypes, protein electrophoresis, total genomic DNA hybridization and chloroplast DNA analysis

1997 ◽  
Vol 205 (1-2) ◽  
pp. 99-110 ◽  
Author(s):  
R. Garcia-Suarez ◽  
C. Alonso-Blanco ◽  
M. C. Fernandez-Carvajal ◽  
J. A. Fernandez-Prieto ◽  
A. Roca ◽  
...  
Keyword(s):  
Chloroplast Dna ◽  
Dna Hybridization ◽  
Genomic Dna ◽  
Dna Analysis ◽  
Protein Electrophoresis

Chemotaxonomy of the genus Carex (Cyperaceae)

1990 ◽  
Vol 68 (7) ◽  
pp. 1457-1461 ◽  
Author(s):  
James R. Manhart
Keyword(s):  
Chloroplast Dna ◽  
Phylogenetic Trees ◽  
Dna Analysis ◽  
Morphological Variability ◽  
Hybrid Origin ◽  
Enzyme Electrophoresis ◽  
Sequence Comparisons ◽  
Phenotypic Characters ◽  
Plant Groups ◽  
Chloroplast Dnas

The major categories of chemosystematic comparisons that were used successfully or are of potential use in Carex include flavonoid analysis, enzyme electrophoresis, and chloroplast DNA mapping and sequencing. The flavonoid work consists mostly of broad scale comparisons of aglycone distributions in a number of sedge genera to include some members of Carex. These comparisons proved to be of limited use in understanding phylogenetic relationships within the genus Carex. However, detailed flavonoid analyses of sections Laxiflorae and Acrocystis demonstrated the utility of flavonoid surveys in Carex at infrasectional levels and possibly at intersectional levels. Enzyme electrophoretic data were used to determine whether the morphological variability present in a species complex is the result of hybridization, phenotypic plasticity, or recent divergence. The C. crinita complex is an example in which intermediate forms are probably not the result of hybridization. Conversely, allozyme data for section Sylvaticae indicate that some of the taxa in this section are of hybrid origin. One of the most promising developments in systematic studies was the use of chloroplast DNA analysis. It was demonstrated in a number of plant groups that restriction endonuclease and sequence comparisons of chloroplast DNAs can be used to construct phylogenetic trees that have homoplasy levels much lower than those constructed from phenotypic characters.

Mitochondrial and chloroplast DNA analysis of interspecific somatic hybrids of a leguminosae: Medicago (alfalfa)

Plant Science ◽  
1987 ◽  
Vol 53 (3) ◽  
pp. 237-242 ◽  
Author(s):  
Angélique D'Hont ◽  
Francis Quetier ◽  
Evelyne Teoule ◽  
Yvette Dattee
Keyword(s):  
Chloroplast Dna ◽  
Dna Analysis ◽  
Somatic Hybrids ◽  
Interspecific Somatic Hybrids
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