Project description:Melica scabrosa Trin. is an important forage grass of Poaceae, wildly distributed in the Northeast Asia to Qinghai-Xizang Plateau. The complete chloroplast genome sequence of M. scabrosa was obtained by de novo assembly using whole genome sequence data. The chloroplast genome is 134,889 bp in length, containing 80,560 bp in a large single copy (LSC), 12,706 bp in a small single copy (SSC) and 20,810 bp in a pair of inverted repeats (IRs). A total of 129 genes including 83 protein-coding genes and 38 structural RNA genes were identified. Phylogenetic analysis represented close relationship among Melica species. This chloroplast genome sequencing offers a useful resource for future genetics and phylogenetic studies.

| S-EPMC7706687 | biostudies-literature

Project description:Melica nutans (Mountain melick)

| PRJEB86122 | ENA

Genetic diversity and population differentiation in Earliella scabrosa, a pantropical species of Polyporales.

Project description:Earliella scabrosa is a pantropical species of Polyporales (Basidiomycota) and well-studied concerning its morphology and taxonomy. However, its pantropical intraspecific genetic diversity and population differentiation is unknown. We initiated this study to better understand the genetic variation within E. scabrosa and to test if cryptic species are present. Sequences of three DNA regions, the nuclear ribosomal internal transcribed spacer (ITS), the large subunit ribosomal DNA (LSU), and the translation elongation factor (EF1α) were analysed for 66 samples from 15 geographical locations. We found a high level of genetic diversity (haplotype diversity, Hd = 0.88) and low nucleotide diversity (π = 0.006) across the known geographical range of E. scabrosa based on ITS sequences. The analysis of molecular variance (AMOVA) indicates that the genetic variability is mainly found among geographical populations. The results of Mantel tests confirmed that the genetic distance among populations of E. scabrosa is positively correlated with the geographical distance, which indicates that geographical isolation is an important factor for the observed genetic differentiation. Based on phylogenetic analyses of combined dataset ITS-LSU-EF1α, the low intraspecific divergences (0-0.3%), and the Automated Barcode Gap Discovery (ABGD) analysis, E. scabrosa can be considered as a single species with five different geographical populations. Each population might be in the process of allopatric divergence and in the long-term they may evolve and become distinct species.

| S-EPMC10754928 | biostudies-literature

Earliella scabrosa-associated postoperative Endophthalmitis after Phacoemulsification with intraocular lens implantation: a case report.

Project description:BackgroundPostoperative endophthalmitis after cataract surgery is a severe eye infection that can lead to irreversible blindness in the affected eye. The characteristics, treatment and prognosis of this disease vary because of its association with different pathogens. Here, we report what is possibly the first case of endophthalmitis after cataract surgery to be associated with the rare pathogen Earliella scabrosa.Case presentationA 56-year-old man from Hainan Island (China) with a history of phacoemulsification and type II diabetes mellitus underwent intraocular lens (IOL) implantation. He later presented with progressive endophthalmitis in his right eye. IOL explantation with capsular bag removal and a 23G pars plana vitrectomy combined with a silicone oil tamponade was performed. The infection was cleared without recurrence, and the patient's visual acuity improved from light perception to 20/200 in the right eye. An in vitro culture determined that the causative pathogen was Earliella scabrosa, and this result was confirmed by an internal transcribed spacer (ITS) sequence analysis.ConclusionEarliella scabrosa has never been reported as an infectious agent in human eyes, and its clinical significance remains unknown. Here, we report a rare case of Earliella scabrosa-associated endophthalmitis after cataract surgery. The fungal infection presented as an acute attack and was successfully treated with vitrectomy.

| S-EPMC5816531 | biostudies-literature

lpMelNut1

Project description:Melica nutans (Mountain melick) genome assembly, lpMelNut1

| PRJEB85997 | ENA

Project description:rhizosphere microbial functions of the host Melica transsilvanica

| PRJNA1093014 | ENA