Molecular systematics and a revised taxonomy of the onocleoid ferns (Dryopteridaceae: Onocleeae).

The study analyzed nucleotide sequences of the chloroplast-encoded rbcL gene for multiple species of ferns and their relatives. The data was analyzed using maximum parsimony and maximum likelihood criteria to determine evolutionary relationships. The results supported reclassification of two fern species and their varieties, as well as a possible reclassification of related genera. The study provides new insight into the evolutionary history and classification of these ferns and their relatives.

Gastony G and Ungerer M (1997).

Am J Bot.

PubMed:

21708636

The mode of origin of root buds and root sprouts in the clonal tree Sassafras albidum (Lauraceae).

Bosela M and Ewers F (1997).

Am J Bot.

PubMed:

21708553

8,12;8,20-diepoxy-8,14-secopregnane glycosides from roots of Asclepias tuberosa and their effect on proliferation of human skin fibroblasts.

Warashina T et al (2011).

Phytochemistry.

DOI:

10.1016/j.phytochem.2011.05.012

PubMed:

21703653

Nematocidal flavone-C-glycosides against the root-knot nematode (Meloidogyne incognita) from Arisaema erubescens tubers.

Du SS et al (2011).

Molecules.

DOI:

10.3390/molecules16065079

PubMed:

21694672

Conservation genetics and taxonomic status of the rare Kentucky lady's slipper: Cypripedium kentuckiense (Orchidaceae).

This study analyzed 12 isozyme loci in 14 populations of Cypripedium parviflorum var. pubescens and 8 populations of Cypripedium kentuckiense to determine their genetic similarity and whether C. kentuckiense should be recognized as a distinct species. The two taxa are closely related, but C. kentuckiense has less variation and heterozygosity. It also has a unique allele and multilocus genotype, suggesting it is a distinct species, possibly originating from C. parviflorum. The isozyme data also showed restricted gene flow between the Virginia population of C. kentuckiense and others. This study supports recognizing C. kentuckiense as a distinct species.

Case MA et al (1998).

Am J Bot.

PubMed:

21680338

Antimicrobial sesquiterpenoids from Laurus nobilis L.

Fukuyama N et al (2011).

Nat Prod Res.

DOI:

10.1080/14786419.2010.502532

PubMed:

21678158

Transcriptome analysis of sarracenia, an insectivorous plant.

Srivastava A et al (2011).

DNA Res.

DOI:

10.1093/dnares/dsr014

PubMed:

21676972

Sida cordifolia leaf extract reduces the orofacial nociceptive response in mice.

Bonjardim LR et al (2011).

Phytother Res.

DOI:

10.1002/ptr.3550

PubMed:

21674632