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Wang Q.,Hainan University | Wu Z.,Hainan Academy of Ocean and Fisheries science | Sun D.,Hainan University | Luo J.,Hainan University
Mitochondrial DNA | Year: 2015

The complete mitochondrial genome of the Ephippus orbis has been sequenced. The mitochondrial genome is 16 670 bp in length, containing 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and one control region. The gene order and the composition of E. orbis mitochondrial genome were similar to that of most other vertebrates. The overall nucleotides base composition of the heavy strand is A (27.17%), G (16.41%), C (31.46%), and T (24.96%). With the exception of the NADH dehydrogenase subunit 6 (ND6) and eight tRNA genes, all other mitochondrial genes are encoded on the heavy strand. Seen from the phylogenetic tree (Figure 1), E. orbis, Platax teira, and Platax orbicularis from the same family (Ephippidae) clustered into one branch and were significantly divergent from the other families of closely related fish species. © 2015 Taylor & Francis. Source


Wu Z.,Hainan Academy of Ocean and Fisheries science | Li X.,Hainan Academy of Ocean and Fisheries science
Mitochondrial DNA | Year: 2015

The complete mitochondrial genome of the Nemipterus virgatus has been sequenced. The mitochondrial genome is 16 992 bp in length, containing 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes and one control region. The gene order and composition of N. virgatus mitochondrial genome was similar to that of most other vertebrates. The overall nucleotides base composition of the light strand is A (27.89%), G (26.61%), C (16.45%), T (29.05%). With the exception of the NADH dehydrogenase subunit 6 (ND6) and eight tRNA genes, all other mitochondrial genes are encoded on the heavy strand. The tRNA-Ser2 gene lacked DHC arm and could not fold into a typical clover-leaf secondary structure. Seen from the phylogenetic tree, N. virgatus, Nemipterus japonicus, and Nemipterus bathybius from the same genus clustered into one branch. © 2015 Taylor & Francis. Source


Dong J.-D.,CAS South China Sea Institute of Oceanology | Dong J.-D.,Hainan Academy of Ocean and Fisheries science | Li Y.-C.,Hainan Academy of Ocean and Fisheries science | Wang Y.-S.,CAS South China Sea Institute of Oceanology | And 4 more authors.
Aquatic Ecosystem Health and Management | Year: 2015

The Xisha Islands, located off Sanya, South China Sea, are a group of islands administered by Hainan Province of the People's Republic of China. Due to little human activity, they are well preserved. Such conditions suggest that changes in ecosystem are mostly related to natural behavior. A baseline of water quality was established in May and July, 2012. The results of multivariate analysis showed changes in nutrients as the most significant variable in describing water quality. Hydrologic heterogeneity showed little change, but temporal characteristics presented distinguishable variations. This information may be valuable for socioeconomic development and human health in Xisha island waters. © 2015 AEHMS. Source


Guo Z.K.,Chinese Academy of Sciences | Wang R.,Hainan Academy of Ocean and Fisheries science | Huang W.,Nanjing University | Li X.N.,CAS Kunming Institute of Botany | And 3 more authors.
Beilstein Journal of Organic Chemistry | Year: 2015

An unusual C18 norditerpenoid, aspergiloid I (1), was isolated from the culture broth of Aspergillus sp. YXf3, an endophytic fungus derived from Ginkgo biloba. Its structure was unambiguously established by analysis of HRMS-ESI and spectroscopic data, and the absolute configuration was determined by low-temperature (100 K) single crystal X-ray diffraction with Cu Kα radiation. This compound is structurally characterized by a new carbon skeleton with an unprecedented 6/5/6 tricyclic ring system bearing an α,β-unsaturated spirolactone moiety in ring B, and represents a new subclass of norditerpenoid, the skeleton of which is named aspergilane. The hypothetical biosynthetic pathway for 1 was also proposed. The cytotoxic, antimicrobial, anti-oxidant and enzyme inhibitory activities of 1 were evaluated. © 2014 Guo et al; licensee Beilstein-Institut. License and terms: see end of document. Source


Wang R.,Hainan Academy of Ocean and Fisheries science | Guo Z.K.,Chinese Academy of Sciences | Li X.M.,Hainan Academy of Ocean and Fisheries science | Chen F.X.,Hainan Academy of Ocean and Fisheries science | And 2 more authors.
Antonie van Leeuwenhoek, International Journal of General and Molecular Microbiology | Year: 2015

Two novel antibiotic spiculisporic acid analogues, named as spiculisporic acid F (1) and G (2), and two known compounds, (−)-spiculisporic acid (3) and secospiculisporic acid B (4), were isolated by bioactivity-guided fractionation from the fermentation broth of the sea urchin-derived Aspergillus candidus strain HDf2. Their structures were unambiguously established by comprehensive analysis of 1D and 2D NMR, and high-resolution MS spectra, and by comparison with known compounds. Biological experiments demonstrated that compounds 1 and 2 displayed antibacterial activity against Gram-negative Pseudomonas solanacearum and Gram-positive Staphylococcus aureus, but showed no cytotoxicity against SGC-7901 human gastric adenocarcinoma and SPC-A-1 human lung adenocarcinoma tumor cell lines. This is the first critical evidence identifying spiculisporic acid derivatives as a potential bio-control agent for the soil borne pathogen P. solanacearum (E. F. Smith) Smith. These findings provide further insight into the chemical and biological activity diversity of this class of compounds. © 2015, Springer International Publishing Switzerland. Source

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