The complete chloroplast genome of Eastern Asian fern (Dryopteridaceae).

is a potential ornamental plant, which is restricted to eastern Asia. Here, we sequenced the complete chloroplast (cp) genome of and constructed a phylogenetic cp tree of Dryopteridaceae to study their relationships. The cp genome of is 153,093 bp in length, being made up of large single-copy (LSC, 83,169 bp), small single-copy (SSC, 21,538 bp), and a pair of region inverted repeats (IRs, 24,193 bp).

and (Pteridaceae), two new diploid species from China, based on morphological, cytological, and molecular data.

Understanding how natural hybridization and polyploidizations originate in plants requires identifying potential diploid ancestors. However, cryptic plant species are widespread, particularly in (Pteridaceae). Identifying cryptic species with different polyploidy levels is a challenge because spp.

The complete chloroplast genome of Plateau herb (Fabaceae).

is a perennial herb, which restricts in Xizang (Tibet) of China, Afghanistan, and Pakistan. The complete chloroplast genome was sequenced using the Illumina Hiseq X-Ten platform. The genome lacks an inverted repeat (IR) region, containing 75 protein-coding genes, 29 tRNAs genes, and 4 rRNAs.

Dating Whole Genome Duplication in and Potential Adaptive Values of Retained Gene Duplicates.

Whole-genome duplications (WGDs) are widespread in plants and frequently coincide with global climatic change events, such as the Cretaceous-Tertiary (KT) extinction event approximately 65 million years ago (mya). Ferns have larger genomes and higher chromosome numbers than seed plants, which likely resulted from multiple rounds of polyploidy. Here, we use diploid and triploid material from a model fern species, , for the detection of WGDs.

A revised classification of Chinese Davalliaceae based on new evidence from molecular phylogenetics and morphological characteristics.

Although the phylogenetic framework of Davalliaceae is known, the classification of Chinese Davalliaceae is still controversial. In this study, a molecular phylogenetic tree of 60 accessions, including 29 species produced in China, was constructed using five plastid DNA markers-atpB, atpB-rbcL, rbcL, rbcL-accD, and accD. New data on studied specimens, field investigations, and scanning electron microscopy analysis of leaf epidermis and spores were used to reclassify Chinese Davalliaceae.

Revision of series Gravesiana (Adiantum L.) based on morphological characteristics, spores and phylogenetic analyses.

Since the adoption of some ambiguous and quantitative characters in Flora Republicae Popularis Sinicae 3(1), species identifications of the series Gravesiana have been in disarray, requiring clarification. Two hundred and fifty-nine individuals from 47 different populations were collected for the estimation of morphological characters and phylogenetic analyses. Spores of 26 populations were observed through scanning electron microscope.

Re-establishment of species from synonymies based on DNA barcoding and phylogenetic analysis using Diplopterygium simulans (Gleicheniaceae) as an example.

Because synonymy treatment traditionally relies on morphological judgments, it usually causes many problems in species delimitation and in the biodiversity catalogue. For example, Diplopterygium simulans, which belongs to the Gleicheniaceae family, has been considered to be synonymous with D. glaucum or D.

Absorption of hazardous pollutants by a medicinal fern Blechnum orientale L.

A Chinese medicinal fern Blechnum orientale (Linn) was separately collected from polluted and unpolluted sites to determine whether it could accumulate hazardous pollutants or not. Metal concentrations (Cu, Zn, Mn, Pb, Cd, Cr, As, and Hg) both in the fronds and roots and polycyclic aromatic hydrocarbons (PAHs) in the fronds of this fern were quantified. At both sites, roots of B.

A new orchid genus, Danxiaorchis, and phylogenetic analysis of the tribe Calypsoeae.

Background: Orchids have numerous species, and their speciation rates are presumed to be exceptionally high, suggesting that orchids are continuously and actively evolving. The wide diversity of orchids has attracted the interest of evolutionary biologists. In this study, a new orchid was discovered on Danxia Mountain in Guangdong, China.

Microsatellite markers for Kleinia neriifolia, an endemic Asteraceae species on the Canary Islands.

Premise Of The Study: Microsatellite makers were developed in Kleinia neriifolia, an endemic Asteraceae species on the Canary Islands, for investigation of the population genetic structure and colonization history of this insular species. •

Methods And Results: Seventeen polymorphic and seven monomorphic microsatellite loci were isolated and characterized from K. neriifolia using the protocol of Fast Isolation by AFLP of Sequences COntaining repeats (FIASCO).

Development of microsatellite markers for the endangered medicinal plant Launaea arborescens (Asteraceae).

Premise Of The Study: Microsatellite loci were developed in Launaea arborescens, an endangered and medicinal Asteraceae species in North Africa, for further investigation of its conservation genetics. •

Methods And Results: We isolated and characterized 10 polymorphic and nine monomorphic microsatellite loci from L. arborescens using the protocol of Fast Isolation by AFLP of Sequences COntaining repeats (FIASCO).