Dragonflies are sensitive to climate change due to their special habitat in aquatic and terrestrial environments, especially Pantala flavescens, which have extraordinary migratory abilities in response to climate change on spatio-temporal scales. At present, there are major gaps in the documentation of insects and the effects of climatic changes on the habitat and species it supports. In this study, we model the global distribution of a wandering glider dragonfly, P. flavescens, and detected the important environmental factors shaping its range, as well as habitat shifts under historical and future warming scenarios. The results showed a global map of species ranges of P. flavescens currently, including southern North America, most of South America, south-central Africa, most of Europe, South, East and Southeast Asia, and northern Oceania, in total, ca. 6581.667 × 10⁴ km². BIO5 (the max temperature of warmest month) and BIO13 (the precipitation of wettest month) greatly explained its species ranges. The historic refugia were identified around the Great Lakes in the north-central United States. Future warming will increase the total area of suitable habitat and shift the type of suitable habitat compared to the current distribution. The habitat suitability of P. flavescens decreased with elevation, global warming forced it to expand to higher elevations, and the habitat suitability of P. flavescens around the equator increased with global warming. Overall, our study provides a global dynamic pattern of suitable habitats for P. flavescens from the perspective of climate change, and provides a useful reference for biodiversity research and biological conservation.

Modern sugarcane cultivars are highly polyploid with complex nuclear genomic genetic background, while their mitochondrion (mt) genomes are much simpler, smaller and more manageable and could provide useful phylogenetic information. In this study, the mt genome of a modern commercial cultivar A1 was sequenced via Illumina Hiseq XTen and PacBio Sequel platform. The assembled and annotated mitochondrial genomes of A1 were composed of two circular DNA molecules, one large and one small, which were named Chromosome 1 and Chromosome 2. The two distinct circular chromosomes of mitogenome construct is consisted with other sugarcane cultivars i.e., Saccharum officinarum Khon Kaen 3 and Saccharum spp. hybrids ROC22 and FN15. The Chromosome 1 of A1 mitogenome is 300,822 bp in length with the GC content of 43.94%, and 7.14% of Chromosome 1 sequences (21,468 nucleotides) are protein coding genes (PCGs) while 92.86% (279,354 nucleotides) are intergenic region. The length of Chromosome 2 is 144,744 bp with the GC content of 43.57%, and 8.20% of Chromosome 2 sequences (11,865 nucleotides) are PCGs while 91.80% (132,879 nucleotides) are intergenic region. A total of 43 genes are located on Chromosome 1, which contains 22 PCGs (six nad genes, four rps genes, four atp genes, three ccm genes, three cox genes, one mat gene and one mtt gene) and 21 non-coding genes including 15 tRNAs and 6 rRNAs. Chromosome 2 includes 18 genes in total, which contains 13 PCGs (four nad genes, three rps genes, two atp genes, one ccm gene, one cob gene, one cox gene and one rpl gene) and five non-coding genes (tRNA genes). Analysis of codon usage of 35 PCGs showed that codon ending in A/U was preferred. Investigation of gene composition indicated that the types and copy numbers of CDS genes, tRNAs and rRNAs of A1 and FN15 were identical. The cox1 gene has two copies and the trnP gene has one copy in A1, FN15 and ROC22 three lines, while there is only one copy of cox1 and two copies of trnP in S. officinarum Khon Kaen 3. In addition, S. officinarum Khon Kaen 3 have no nad1 gene and rps7 gene. 100 sequence repeats, 38 SSRs and 444 RNA editing sites in A1 mt genome were detected. Moreover, the maximum likelihood phylogenetic analysis found that A1 were more closely related to S. spp. hybrid (ROC22 and FN15) and S. officinarum (Khon Kaen 3). Herein, the complete mt genome of A1 will provide essential DNA molecular information for further phylogenetic and evolutionary analysis for Saccharum and Poaceae.

Gomesa flexuosa (Lodd) M.W.Chase & N.H.Williams is a new species of orchid revised in 2009. In this study, the chloroplast genome of G. flexuosa was sequenced to determine its genomic characteristics and phylogenetic relationship with other related species. G. flexuosa has a chloroplast genome size of 147,764 bp, comprising 25,757 bp of two inverted repeat (IR) regions, 83,579 bp of large single-copy (LSC) region, and 12,671 bp of small single-copy (SSC) region. Moreover, the whole genome contains 73 protein-coding genes, 38 tRNA genes, and eight rRNA genes. Phylogenetic analysis showed that G. flexuosa is closely related to Oncidium sphacelatum.

Strain HUAS 3-15^T was isolated from the leaves of Cathaya argyrophylla collected from Chenzhou, Hunan Province, PR China. The main fatty acids (>5.0 %) of the strain were anteiso-C_15 : 0, C_16 : 0, C_18 : 1 ω9c, iso-C_16 : 0, summed feature 5 (C_18 : 2 ω6,9c/C_18 : 0 ante), iso-C_15 : 0 and anteiso-C_17 : 0. MK-9(H₆), MK-9(H₈) and MK-9(H₄) were detected as respiratory quinones. The diagnostic cell-wall diamino acid was meso-diaminopimelic acid. Galactose, glucose and ribose were also present in the cell wall. The major polar lipids consisted of diphosphatidylglycerol, phosphatidyl ethanolamine, phosphatidylinositol mannosides and unidentified phospholipids. The DNA G+C content of the genome sequence, consisting of 8 860 963 bp, is 72.4 mol%. blast analysis based on 16S rRNA gene sequences revealed that the strain belongs to the genus Kitasatospora, with 99.37, 99.03, 98.95, 98.68 and 98.67 % sequence similarity to Kitasatospora aureofaciens ATCC 10762^T, Kitasatospora viridis DSM 44826^T, Kitasatospora xanthocidica NBRC 13469^T, Kitasatospora aburaviensis NRRL B-2218^T and Kitasatospora kifunensis IFO 15206^T, respectively. Phylogenetic trees based on 16S rRNA gene and whole-genome sequences demonstrated that strain HUAS 3-15^T formed a well‐supported cluster with K. aureofaciens ATCC 10762^T. Further genomic characterization through average nucleotide identity (ANIb/m) and digital DNA–DNA hybridization analysis between strain HUAS 3-15^T and K. aureofaciens ATCC 10762^T showed values of 90.62/92.55 % and 45.3 %, respectively, lower than the 95–96 % ANI threshold and 70.0 % cutoff used as guideline values for species delineation in bacteria. Furthermore, the differences between the strain and its phylogenomic neighbour in terms of physiological (e.g. sole carbon source growth) and chemotaxonomic (e.g. cellular fatty composition) characteristics further supported this conclusion. Consequently, we concluded that strain HUAS 3-15^T represents a novel species of the genus Kitasatospora, for which the name Kitasatospora cathayae sp. nov. is proposed. The type strain is HUAS 3-15^T (=MCCC 1K08542^T=JCM 36274^T).

Strains HUAS TT3 ^T and HUAS TT20 ^T were isolated from rhizosphere soil samples of Cyclosorus acuminatus collected in Qianjiang, Hubei Province, China. Sequence analyses of the 16S rRNA gene of strains HUAS TT3 ^T and HUAS TT20 ^T indicated that they belonged to the genus Streptomyces . Strain HUAS TT3 ^T exhibited the highest sequence similarity of 99.79% to Streptomyces racemochromogenes JCM 4407 ^T , Streptomyces polychromogenes JCM 4505 ^T , and Streptomyces yangpuensis fd2-11 tb ^T , while strain HUAS TT20 ^T exhibited the highest sequence similarity of 98.76% to Streptomyces barringtoniae JA03 ^T . Phylogenetic trees constructed using the 16S rRNA gene, five housekeeping genes ( atpD , gyrB , recA , rpoB, and trpB ), and whole genome sequences indicated that strain HUAS TT3 ^T is most closely related to Streptomyces toxytricini NRRL B-5426 ^T and Streptomyces globosus JCM 13859 ^T , while strain HUAS TT20 ^T is most closely related to S. barringtoniae JA03 ^T . However, the average nucleotide identity based on MUMmer (ANIm) and digital DNA–DNA hybridization (dDDH) values were as follows: between HUAS TT3 ^T and S. toxytricini JCM 4421 ^T , the values were 88.08 and 30.10%; between HUAS TT3 ^T and S. globosus JCM 13859 ^T , the values were 88.08 and 30.30%; between HUAS TT20 ^T and S. barringtoniae JA03 ^T , the values were 82.71 and 28.20%. These values were considerably lower than the ANIm and dDDH values for the species boundaries for Streptomyces . Moreover, the differential comparisons of phenotypic, cultural, and chemotaxonomic characteristics between HUAS TT3 ^T and S. toxytricini CGMCC 4.1734 ^T , HUAS TT3 ^T and S. globosus JCM 13859 ^T , and HUAS TT20 ^T and S. barringtoniae LMG 32415 ^T also supported this conclusion. As mentioned above, we conclude that strains HUAS TT3 ^T and HUAS TT20 ^T represent two novel Streptomyces species, for which the names Streptomyces pallidus sp. nov. HUAS TT3 ^T (MCCC 1K10084 ^T = JCM 38172 ^T ) and Streptomyces qianjiangensis sp. nov. HUAS TT20 ^T (=MCCC 1K10090 ^T = JCM 38175 ^T ) are proposed.