In this study, we investigated the genetic structure and phylogeographic pattern of the genus Cunninghamia, a member of the Cupressaceae restricted to mainland China and Taiwan, based on sequences of the trnD-trnT noncoding spacer of the chloroplast DNA. Maternal inheritance of chloroplasts was determined experimentally. No paternal leakage was detected. Both parsimony and neighbor-joining anal...

Recent nrDNA and trnC-trnD sequence data revealed that J. monticola and J. m. f. compacta are not monophyletic, and this prompted additional research using Single Nucleotide Polymorphisms (SNPs). The SNPs data clearly show that J. monticola f. compacta is not conspecific with J. monticola f. monticola. Juniperus monticola f. compacta Mart. is raised to the specific level as: Juniperus compacta ...

Ruschieae is the largest tribe in the highly speciose subfamily Ruschioideae (Aizoaceae). A generic-level phylogeny for the tribe was recently produced, providing new insights into relationships between the taxa. Octopoma and Arenifera are woody shrubs with multilocular capsules and are distributed across the Succulent Karoo. Octopoma was shown to be polyphyletic in the tribal phylogeny, but co...

As shown originally by Boynton and co-workers (Boynton, J.E., Gillham, N.W., Harris, E.H., Hosler, J.P., Johnson, A.M., Jones, A.R., Randolph-Anderson, B.L., Robertson, D., Klein, T.M., Shark, K.B., and Sanford, J.C. [1988]. Science 240, 1534-1538), a nonphotosynthetic, acetate-requiring mutant strain of Chlamydomonas reinhardtii with a 2.5-kilobase pair deletion in the chloroplast Bam 10 restr...

Rhizomes of Sinopodophyllum hexandrum and Dysosma species, which have long been used in the traditional Chinese herbal medicine, have similar morphology and chemical composition. However, the podophyllotoxin content is higher in the rhizomes of S. hexandrum than in those of Dysosma species. The PCR-amplified fragments of trnT -trnL showed length variation between S. hexandrum and Dysosma specie...

Methods This study uses maximum-likelihood and Bayesian phylogenetic analyses of chloroplast DNA (atpB–rbcL, trnL–trnF, trnS–trnG, psbA–trnH) and nuclear ribosomal DNA [internal transcribed spacer (ITS) and external transcribed spacer (ETS)] from 24 out of c. 37 ingroup taxa, beast molecular dating, and the dispersal–extinction–cladogenesis method (Lagrange) to reconstruct ancestral geographica...

This study focuses on three phylogenetic problems related to Capsicum (Solanaceae): (1) the monophyly of the genus, (2) species delimitation within the genus, and (3) phylogenetic relationships of species within Capsicum. The chloroplast atpB-rbcL noncoding spacer region was used to derive a phylogeny for seven outgroup genera and 11 species of Capsicum. Data derived from five introns within th...