The mitochondrial energy metabolism pathway-related signature predicts prognosis and indicates immune microenvironment infiltration in osteosarcoma.

Background: Abnormalities in the mitochondrial energy metabolism pathways are closely related to the occurrence and development of many cancers. Furthermore, abnormal genes in mitochondrial energy metabolism pathways may be novel targets and biomarkers for the diagnosis and treatment of osteosarcoma. In this study, we aimed to establish a mitochondrial energy metabolism-related gene signature for osteosarcoma prognosis.

 (Rubiaceae), a new species from south China.

(Rubiaceae) is described from Guangdong Province, China. It is similar to but differs in having puberulent, more or less tetragonal and decussately sulcate juvenile stems, waxy leaf surface, short inflorescence peduncles, high length ratio of corolla lobe to tube, and subglobose capsules. The phylogenetic analysis reveals that is sister to .

Biomechanical analysis of internal fixation system stability for tibial plateau fractures.

Complex bone plateau fractures have been treated with bilateral plate fixation, but previous research has overemphasized evaluating the effects of internal fixation design, plate position, and screw orientation on fracture fixation stability, neglecting the internal fixation system's biomechanical properties in postoperative rehabilitation exercises. This study aimed to investigate the mechanical properties of tibial plateau fractures after internal fixation, explore the biomechanical mechanism of the interaction between internal fixation and bone, and make suggestions for early postoperative rehabilitation and postoperative weight-bearing rehabilitation. By establishing the postoperative tibia model, the standing, walking and running conditions were simulated under three axial loads of 500 N, 1000 N, and 1500 N.

Risk factors and strategies for recovery quality, postoperative pain, and recurrent fractures between percutaneous kyphoplasty and percutaneous vertebroplasty in elderly patients with thoracolumbar compression fractures: a retrospective comparative cohort study.

Background: With the increase of clinical cases and the improvement of operation, we found that recurrent fracture of the adjacent vertebral body is a common long-term complication of percutaneous kyphoplasty (PKP). However, the mechanism of re-fracture of adjacent vertebrae after PKP has not been unified. Therefore, through retrospective study, this paper discussed the risk factors and countermeasures affecting the quality of rehabilitation, postoperative pain and recurrent fracture in elderly PKP patients.

Phylogenomic Analysis Reconstructed the Order Matoniales from Paleopolyploidy Veil.

Phylogenetic conflicts limit our understanding of the evolution of terrestrial life under multiple whole genome duplication events, and the phylogeny of early terrestrial plants remains full of controversy. Although much incongruence has been solved with so-called robust topology based on single or lower copy genes, the evolutionary mechanisms behind phylogenetic conflicts such as polyploidization remain poorly understood. Here, through decreasing the effects of polyploidization and increasing the samples of species, which represent all four orders and eight families that comprise early leptosporangiate ferns, we have reconstructed a robust phylogenetic tree and network with 1125 1-to-1 orthologs based on both coalescent and concatenation methods.

Convergent molecular evolution of phosphoenolpyruvate carboxylase gene family in C and crassulacean acid metabolism plants.

Phosphoenolpyruvate carboxylase (PEPC), as the key enzyme in initial carbon fixation of Cand crassulacean acid mechanism (CAM) pathways, was thought to undergo convergent adaptive changes resulting in the convergent evolution of C and CAM photosynthesis in vascular plants. However, the integral evolutionary history and convergence of PEPC in plants remain poorly understood. In the present study, we identified the members of PEPC gene family across green plants with seventeen genomic datasets, found ten conserved motifs and modeled three-dimensional protein structures of 90 plant-type PEPC genes.

(Dryopteridaceae), a new species from Hunan, China.

, a new species growing on limestone in the Wulingshan Mountains, Hunan, China, is described and illustrated. This species is most similar to and on general morphological traits, such as the form of scales, rhizome and sori, but differs by the number of vascular bundles at the base of the petiole, length to width ratio of lamina, stalk length of basal pinnae, division of the lamina, apex form of the pinnule and habitat. Moreover, molecular phylogenetic analysis using the chloroplast L gene suggested that , as the sister group of , is a monophyletic clade.

Morphology and molecules support the new monotypic genus (Rubiaceae) from Asia.

R.J. Wang, a new monotypic genus for (Wall.

Chromosomal-level assembly of the Leptodermis oblonga (Rubiaceae) genome and its phylogenetic implications.

Rubiaceae is the fourth largest and a taxonomically complex family of angiosperms. Many species in this family harbor low reproductive isolation and frequently exhibit inconsistent phenotypic characteristics. Therefore, taxonomic classification and their phylogenetic relationships in the Rubiaceae family is challenging, especially in the genus Leptodermis.

Complete chloroplast genomes of Leptodermis scabrida complex: Comparative genomic analyses and phylogenetic relationships.

Leptodermis scabrida complex is one of the important components of genus Leptodermis, which is mainly distributed in the Himalaya Mountains. It includes species of L. gracilis, L.

The complete chloroplast genome of (Rubioideae: Rubiaceae): a monotypic species endemic to Guangdong, China.

, a monotypic genus of the Rubiaceae, is endemic to China. Its complete chloroplast genome was determined to be 153,114 bp in length and the GC content was 37.90%.

Morphology and molecules support the new monotypic genus (Rhamnaceae) from south China.

, a new monotypic genus, along with the new species , is described from Guangdong Province, China. The combined features of inferior ovary, cylindrical drupaceous fruits and orbicular and dorsiventrally-compressed seeds with an elongate and pronounced basal appendage make the new genus significantly different from other genera of the family. In addition, its pollen morphology also showed great similarity to other species of this stenopalynous family.

The complete chloroplast genome of (Rubiaceae): a monotypic species endemic to Guangdong, China.

, a monotypic genus of the Rubiaceae, is an Endangered species endemic to China. Its complete chloroplast genome was determined to be 154,909 bp in length and the GC content was 37.80%.

The complete chloroplast genome of (Araliaceae): a wild edible plant in the coastal region of South China.

(L.) S. Y.

The complete chloroplast genome of (Rubiaceae): an endemic shrub in Himalaya-Hengduan Mountains.

is an important endemic species in Himalaya-Hengduan Mountains. Here, we report the complete chloroplast genome of . The cp genome was determined to be 154783 bp in length and the GC content was 37.

Endangered but genetically stable- within woodlands in suburbanized villages.

woodlands are naturally or artificially formed green areas in southern China. They are precious for maintaining ecosystem balance in modern semiurban environments. However, they are generally small and geographically isolated from each other, and the status of genetic diversity of the plant species within them has been almost neglected.

Nutritional and Functional Properties of Wild Food-Medicine Plants From the Coastal Region of South China.

Food-medicine plants play an important role in providing nutrition and treating chronic diseases, especially in many minority communities and developing regions. The coastal region of South China has abundant resources of medicinal plants. A long history of cross-cultural medicinal practices among different minority groups has facilitated the development of a remarkable dietary culture by using food-medicine plants.

Spiradiclis pengshuiensis (Ophiorrhizeae, Rubioideae), a new species from Chongqing, China.

Spiradiclis pengshuiensis Bo Pan & R. J. Wang (Rubiaceae) is described as a new species from Chongqing in SW China.

Spiradiclislonganensis, a new species of Rubiaceae from China.

A new species of Spiradiclis (Rubiaceae) was found during our field trip to Guangxi, China, and is described here as Spiradiclislonganensis R. J. Wang.

Phylogeny of the Asian Hedyotis-Oldenlandia complex (Spermacoceae, Rubiaceae): evidence for high levels of polyphyly and the parallel evolution of diplophragmous capsules.

Generic delimitation in the Hedyotis-Oldenlandia complex has a long taxonomically confused history because of the controversy of lumping or splitting these two taxa. Previous morphological and phylogenetic studies with a paucity of Asian taxa suggested that Hedyotis should include only Asian species characterized by diplophragmous capsules. In order to test the reliability of this conclusion, assess the phylogenetic value of capsular characters, and evaluate generic circumscriptions in this complex, a phylogenetic study based on expanded inclusion of 63 Asian species was performed using two nuclear regions and eight plastid regions with parsimony and likelihood analyses.

Comparative chloroplast genomes of pinaceae: insights into the mechanism of diversified genomic organizations.

Pinaceae, the largest family of conifers, has diversified organizations of chloroplast genomes (cpDNAs) with the two typical inverted repeats (IRs) highly reduced. To unravel the mechanism of this genomic diversification, we examined the cpDNA organizations from 53 species of the ten Pinaceous genera, including those of Larix decidua (122,474 bp), Picea morrisonicola (124,168 bp), and Pseudotsuga wilsoniana (122,513 bp), which were firstly elucidated. The results uncovered four distinct cpDNA forms (A-C and P) that are due to rearrangements of two ∼20 and ∼21 kb specific fragments.

Dynamics and evolution of the inverted repeat-large single copy junctions in the chloroplast genomes of monocots.

Background: Various expansions or contractions of inverted repeats (IRs) in chloroplast genomes led to fluxes in the IR-LSC (large single copy) junctions. Previous studies revealed that some monocot IRs contain a trnH-rps19 gene cluster, and it has been speculated that this may be an evidence of a duplication event prior to the divergence of monocot lineages. Therefore, we compared the organizations of genes flanking two IR-LSC junctions in 123 angiosperm representatives to uncover the evolutionary dynamics of IR-LSC junctions in basal angiosperms and monocots.