A revised classification of Dryopteridaceae based on plastome phylogenomics and morphological evidence, with the description of a new genus, .

Dryopteridaceae are the largest fern family and include nearly 20% of extant fern diversity, with 24 currently recognized genera. Recognition and delineation of genera within this family have varied greatly. The three-subfamily classification of Dryopteridaceae was based primarily on molecular phylogenetic relationships but lacked morphological evidence, and the phylogenetic relationships of the subfamilies and genera of Dryopteridaceae are only partially resolved.

PVP-assisted in situ immobilizing lipase on covalent organic framework for enhanced catalytic activity and stability in bioconversions.

Covalent organic frameworks (COFs) are crystalline, porous organic materials that have significant potential as supports for enzyme immobilization. Nevertheless, the in situ preparation of biocatalysts during the COF formation process remains a considerable challenge. Herein, we developed a one-pot in situ preparation strategy.

, a critically endangered diploid new species of Dryopteridaceae from Yunnan, China.

, a new species of diploid, sexually reproductive ferns of Dryopteridaceae from Yunnan, southwestern China, is described and illustrated. Morphologically, is similar to but unique in elongated lanceolate laminae, sessile or subsessile pinna stalks, and overlapping membranous scales adnate to stipe base. Phylogenetic analyses based on both plastome and the nuclear gene sequences showed that is sister to .

Plastome phylogenomic analysis reveals evolutionary divergences of Polypodiales suborder Dennstaedtiineae.

Background: Polypodiales suborder Dennstaedtiineae contain a single family Dennstaedtiaceae, eleven genera, and about 270 species, and include some groups that were previously placed in Dennstaedtiaceae, Hypolepidaceae, Monachosoraceae, and Pteridaceae. The classification and phylogenetic relationships among these eleven genera have been poorly understood. To explore the deep relationships within suborder Dennstaedtiineae and estimate the early diversification of this morphologically heterogeneous group, we analyzed complete plastomes of 57 samples representing all eleven genera of suborder Dennstaedtiineae using maximum likelihood and Bayesian inference.

Case report: Moderate therapeutic response to Bevacizumab in late-onset Labrune syndrome.

Labrune syndrome (LS) is caused by gene mutations with a particular neuroimaging of white matter disease, intracranial calcification, and cysts. There was no effective treatment until now. An 18-year-old man with infancy-onset LS was first treated with vascular endothelial growth factor (VEGF) inhibitor Bevacizumab for 1 year, resulting in significant clinical and radiological improvements.

Structural Variation of Plastomes Provides Key Insight Into the Deep Phylogeny of Ferns.

Structural variation of plastid genomes (plastomes), particularly large inversions and gene losses, can provide key evidence for the deep phylogeny of plants. In this study, we investigated the structural variation of fern plastomes in a phylogenetic context. A total of 127 plastomes representing all 50 recognized families and 11 orders of ferns were sampled, making it the most comprehensive plastomic analysis of fern lineages to date.

A revision of sect. (Dryopteridaceae) based on morphological and molecular evidence with description of a new species.

sect. is a small section of ferns with about 12 species mainly distributed in East Asia. Here, we carried out morphological and phylogenetic analyses of this section.

Vanadium removal from mining ditch water using commercial iron products and ferric groundwater treatment residual-based materials.

Removal of vanadium from liquid waste streams protects the environment from toxic vanadium species and promotes the recovery of the valuable metal. In this study, real mining ditch water was sampled from a closed vanadium mine (V-Fe-Ti oxide deposit, Finland) and used in sorption experiments at prevailing vanadium concentration (4.66-6.

Extreme plastid RNA editing may confound phylogenetic reconstruction: A case study of (lycophytes).

Cytidine-to-uridine (C-to-U) RNA editing is common in coding regions of organellar genomes throughout land plants. In most cases RNA editing alters translated amino acids or creates new start codons, potentially confounds phylogenetic reconstructions. In this study, we used the spike moss genus (lycophytes), which has the highest frequency of RNA editing, as a model to test the effects of extreme RNA editing on phylogenetic reconstruction.

Complete plastome of an endemic fern species from China: (Polypodiaceae).

(Baker) Christ is an endangered fern species endemic to southwest China. In this study, we sequenced the complete plastid genome of . The gene order and structure of the plastome are similar to those published plastomes in Polypodiales.

Temperature-driven variation in the removal of heavy metals from contaminated tailings leaching in northern Norway.

High amounts of tailings with a low recycling rate are generated during mining and smelting processes, and a lot of environmental problems were caused by heavy metal leaching from tailings. Temperature is a key point in heavy metals leaching, and knowing the effects of temperature on tailings leaching is useful for tailings management. A small-scale batch leaching experiment was conducted at different temperatures to test temperature-driven heavy metal leaching from tailings in the arctic area.

Applying DNA Barcodes to Identify Closely Related Species of Ferns: A Case Study of the Chinese Adiantum (Pteridaceae).

DNA barcoding is a fast-developing technique to identify species by using short and standard DNA sequences. Universal selection of DNA barcodes in ferns remains unresolved. In this study, five plastid regions (rbcL, matK, trnH-psbA, trnL-F and rps4-trnS) and eight nuclear regions (ITS, pgiC, gapC, LEAFY, ITS2, IBR3_2, DET1, and SQD1_1) were screened and evaluated in the fern genus Adiantum from China and neighboring areas.

Spatiotemporal patterns of particulate matter (PM) and associations between PM and mortality in Shenzhen, China.

Background: Most studies on air pollution exposure and its associations with human health in China have focused on the heavily polluted industrial areas and/or mega-cities, and studies on cities with comparatively low air pollutant concentrations are still rare. Only a few studies have attempted to analyse particulate matter (PM) for the vibrant economic centre Shenzhen in the Pearl River Delta. So far no systematic investigation of PM spatiotemporal patterns in Shenzhen has been undertaken and the understanding of pollution exposure in urban agglomerations with comparatively low pollution is still limited.

Ambient air quality and the effects of air pollutants on otolaryngology in Beijing.

To investigate temporal patterns, pollution concentrations and the health effects of air pollutants in Beijing we carried out time-series analyses on daily concentrations of ambient air pollutants and daily numbers of outpatient visits for otolaryngology over 2 years (2011-2012) to identify possible health effects of air pollutants. The results showed that PM10 was the major air pollutant in Beijing and that air quality was slightly better in 2012 than in 2011. Seasonal differences were apparent for SO2 and NO2.

Metal mobilization under alkaline conditions in ash-covered tailings.

The aim of this study was to determine element mobilization and accumulation in mill tailings under alkaline conditions. The tailings were covered with 50 cm of fly ash, and above a sludge layer. The tailings were geochemically and mineralogically investigated.

Biogeographic disjunction between eastern Asia and North America in the Adiantum pedatum complex (Pteridaceae).

Premise Of The Study: Biogeographic analyses of ferns with an eastern Asian-North American disjunction are few. The Adiantum pedatum complex has such a disjunct distribution. The monophyly of the complex needs to be tested and diversification history of the four species needs to be reconstructed.

Phylogenetic relationships of Chinese Adiantum based on five plastid markers.

Adiantum consists of about 150-200 species mostly with a pantropical distribution, yet the classifications of Adiantum have been based primarily on regional studies. Confounding the clarity of reconstructing the evolutionary history of Adiantum is that previous molecular phylogenetic studies suggest that a separate and distinctive clade, the vittarioids, may be derived from within Adiantum. Five plastid markers (atpA, atpB, rbcL, trnL-F and rps4-trnS) are employed to assess the monophyly of Adiantum, and construct the molecular phylogeny of Chinese Adiantum.

[Relationship between longevity and soil environment in Xiayi County, Henan Province, China].

Based on field investigation and laboratory analysis, exploration was done of distribution of macro and micro elements in the soils and distribution of longevity population in Xiayi County, Henan Province, China, and relationship between the spatial variation of the distribution of soil elements and the distribution of the longevity population. It was found that longevity population was distributed in a belt running across Xiayi county from northeast to southwest. In the northeast part, the longevity rate (over 95 years old) reached 187 per million and while in the northwest part, it was only 83.

Molecular authentication of the traditional Tibetan medicinal plant Swertia mussotii.

Swertia mussotii is an important species in Tibetan folk medicine. However, it is quite expensive and frequently adulterated, so reliable methods for authentication of putative specimens and preparations of the species are needed to protect consumers and to support conservation measures. We show here that the chloroplast (cp) DNA RPL16 intron has limited utility for differentiating S.

Paraphyly of Cyrtomium (Dryopteridaceae): evidence from rbcL and trnL-F sequence data.

Cyrtomium is an Asiatic genus characterized by anastomosing veins with included veinlets, and comprises about 40 species. We sequenced rbcL and trnL-F sequences of 19 species of Cyrtomium and eight species from related genera in order to elucidate a molecular phylogeny of the genus using maximum-parsimony methods. The phylogenetic trees did not agree with traditional classifications.