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- W3010191606 endingPage "144523" @default.
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- W3010191606 abstract "Chitinases play an important role in many biological processes in crustaceans, including molting, digestion, and immunity. In order to further explore the immune defense mechanism of chitinase in Portunus trituberculatus, the PtCht-1 gene was cloned by RACE (rapid-amplification of cDNA ends). This cDNA with a full length of 1910 bp, and an ORF (open reading frame) 1749 bp, coded for 582 amino acid residues and was classified into P. trituberculatus chitinase GH18-group4. It had the typical structural characteristics of GH18 chitinase family. Real-time PCR was used to analyze the expression of PtCht-1 in different tissues, molting stages, after pathogen infection, and low salinity (11‰). PtCht-1 was expressed in all tissues, with the highest expression in the hepatopancreas. In the hepatopancreas of different molting stages, the expression level decreased successively during post-molt stages (A/B), pre-molt stage (D) and inter-molt stage (C). Under normal circumstances, after artificial infection with WSSV and Vibrio parahaemolyticus, the expression of PtCht-1 in hepatopancreas reached the maximum at 48 h, and in hemolymph at 72 h and 24 h, respectively. Overall PtCht-1 expression was up-regulated compared with the control group. Low salinity stress significantly inhibited the expression of PtCht-1, up to 42 folds. Under low salinity stress, the time when WSSV infection reached the peak was markedly delayed by at least 24 h. The results of this study indicate that PtCht-1, as an immune factor, is likely involved in pathogen defense of P. trituberculatus, the immune function of which may be inhibited to some extent after low salinity stress." @default.
- W3010191606 created "2020-03-13" @default.
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- W3010191606 date "2020-05-01" @default.
- W3010191606 modified "2023-10-17" @default.
- W3010191606 title "Characterization of a chitinase-1 gene (PtCht-1) from a marine crab Portunus trituberculatus and its response to immune stress" @default.
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- W3010191606 doi "https://doi.org/10.1016/j.gene.2020.144523" @default.
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