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Quanxin Gao,Yanfeng Yue,Minghua Min,Shiming Peng,Zhaohong Shi,Jinbo Wang,Tao Zhang 한국통합생물학회 2018 Animal cells and systems Vol.22 No.4
The Kelp grouper Epinephelus moara is one of the most widely consumed and economically important marine fish in China. The species can tolerate a wide range of salinity, but genomic resources are not available, and the molecular mechanisms underlying adaptation to salinity at the transcriptomic level remain largely unclear. In this study, the transcriptomic responses of the liver of E. moara under low salinity were investigated using the Illumina digital gene expression system. After de novo assembly, 499,356 transcripts were generated and contributed 445,068 unigenes. A total of 14, 19, 33 and 3101 genes were differentially expressed following exposure to low salinity stress for 2, 6, 24 and 48 h, respectively. Only two genes were differentially expressed in all groups. Four genes related to metabolism and ambient salinity adaption were randomly selected to validate the differentially expressed genes (DEGs) by real-time PCR. Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway enrichment analysis were used to analyse the functional significance of DEGs, including those responding to salinity through diverse biological processes, cellular components, molecular functions, and pathways associated with metabolic and osmotic responses. This work provides new insight into the response to salinity challenges in E. moara, and the findings expand our knowledge of the molecular basis of metabolic regulation mechanisms in this species. Additionally, the transcriptional data provide a valuable resource for future molecular and genetic studies on E. moara.
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Fei Yin,Fukang Gu,Xin Sheng,Quanxin Gao,Qili Li,Zhaohong Shi 한국통합생물학회 2013 Animal cells and systems Vol.17 No.4
Ciliature microtubular organelles, which organize into ciliary units, are highly complex microtubular systems. Toinvestigate the formation of ciliature microtubular organelles and the role that different tubulins play in this process,we examined the distribution and function of α-, γ-, and δ-tubulins in the hypotrich ciliate Stylonychia pustulata. Immunofluorescence analysis demonstrated that α-tubulin localized to all microtubular organelles, while γ- and δ-tubulinscolocalized at basal bodies. Immunogold labeling revealed that γ- and δ-tubulins colocalize to the proximalpart of basal bodies, suggesting that γ- and δ-tubulins probably interact and may function together. In addition, thepermanent localization of γ-tubulin to the adoral zone of membranelles suggests that γ-tubulin play a role in themaintenance of oral ciliature base-associated microtubules, but does not play a role in the biogenesis of theseciliature. We observe that δ-tubulin is restricted to the basal body and the connective fibers of the basal body,suggesting this protein may be required for the extension and stability of the microtubules in these structures. Dramatically different concentrations of these three tubulins were observed in the cytoskeleton and the insoluble andsoluble fractions of the cell, suggesting that these highly related proteins perform different functions in S. pustulata.
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