Species identification and phylogenetic relationship clarification are fundamental goals in species delimitation. However, these tasks pose challenges when based on morphologies, geographic distribution, and genomic data. Previously, two species of the fern genus , × and were described based on morphological traits; they are phylogenetically intertwined with and fail to form monophyletic groups.
View Article and Find Full Text PDFTropical cyclones are among the major climatic disasters threatening human survival and development. They are also responsible in part for forest taxonomic composition and dynamics and may lead to catastrophic succession between ecosystems. In this study, we aimed to investigate the extensiveness and severity of the effect caused by Typhoon Hato among the three primary plant communities in Macau, China, including Guia Hill, Taipa Grande, and Ka Ho.
View Article and Find Full Text PDFMitochondrial DNA B Resour
February 2023
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).
View Article and Find Full Text PDFSalinity adversity has been a major environmental stressor for plant growth and reproduction worldwide. Semi-mangrove , a naturally salt-tolerant plant, can be studied as a successful example to understand the biological mechanism of saline resistance. Since it is a sophisticated and all-round scale process for plants to react to stress, our greenhouse study interpreted the response of to salt challenge in the following aspects: morphology, osmotic protectants, ROS production and scavenging, ion homeostasis, photosynthetic efficiency, and transcriptome reprogramming.
View Article and Find Full Text PDFUnderstanding 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.
View Article and Find Full Text PDFWhile roots and leaves have evolved independently in lycophytes, ferns and seed plants, there is still confusion regarding the morphological evolution of ferns, especially in whisk ferns, which lack true leaves and roots and instead only exhibit leaf-like appendages and absorptive rhizoids. In this study, analyses of comparative transcriptomics on positively selected genes were performed to provide insights into the adaptive evolution of whisk fern morphologies. Significantly clustered gene families specific to whisk ferns were mainly enriched in Gene Ontology (GO) terms "binding proteins" and "transmembrane transporter activity", and positive selection was detected in genes involved in transmembrane transporter activities and stress response (e.
View Article and Find Full Text PDFInt J Environ Res Public Health
June 2021
Water pollution caused by excessive nutrient and biological invasion is increasingly widespread in China, which can lead to problems with drinking water as well as serious damage to the ecosystem if not be properly treated. Aquatic plant restoration (phytoremediation) has become a promising and increasingly popular solution. In this study, eight native species of low-temperature-tolerant aquatic macrophytes were chosen to construct three combinations of aquatic macrophytes to study their purification efficiency on eutrophic water in large open tanks during autumn in Guangzhou City.
View Article and Find Full Text PDFMitochondrial DNA B Resour
February 2021
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.
View Article and Find Full Text PDFInt J Environ Res Public Health
February 2020
Although eutrophication and biological invasion have caused serious harm to aquatic ecosystems, exotic and even invasive plants have been used extensively in phytoremediation water systems in China. To identify native aquatic plants with excellent water restoration potential, two representative native floating aquatic plants from Guangdong Province, namely (PL) and (PT), were selected, with as a control, to study their growth status, adaptability, and nutrient removal potentials in swine manure wastewater. The results demonstrated that the two native plants offered greater advantages than in water restoration.
View Article and Find Full Text PDFInt J Environ Res Public Health
November 2019
Phytoremediation is a potentially suitable technology for taking up large amounts of N and P during plant growth and the removal of plant material, thereby avoiding eutrophication. We compared the capacity of nine different aquatic plant species for removing total P (TP), total N (TN), and NH-N from raw domestic sewage wastewater collected from a living area located in Guangzhou city, China, and different concentrations of artificial wastewater. The experiments were performed in two stages, namely screening and modification.
View Article and Find Full Text PDFWhole-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.
View Article and Find Full Text PDFAlthough 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.
View Article and Find Full Text PDFSince 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.
View Article and Find Full Text PDFBecause 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.
View Article and Find Full Text PDFDiversification between islands and ecological radiation within islands are postulated to have occurred in the Euphorbia species (sect. Aphyllis subsect. Macaronesicae) on the Canary Islands.
View Article and Find Full Text PDFA 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.
View Article and Find Full Text PDFBackground: 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.
View Article and Find Full Text PDFPremise 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).
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).