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Mo N, Shao S, Cui Z, Bao C. Roles of eyestalk in salinity acclimatization of mud crab (Scylla paramamosain) by transcriptomic analysis. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 52:101276. [PMID: 38935995 DOI: 10.1016/j.cbd.2024.101276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/29/2024] [Accepted: 06/12/2024] [Indexed: 06/29/2024]
Abstract
Salinity acclimatization refers to the physiological and behavioral adjustments made by crustaceans to adapt to varying salinity environments. The eyestalk, a neuroendocrine organ in crustaceans, plays a crucial role in salinity acclimatization. To elucidate the molecular mechanisms underlying eyestalk involvement in mud crab (Scylla paramamosain) acclimatization, we employed RNA-seq technology to analyze transcriptomic changes in the eyestalk under low (5 ppt) and standard (23 ppt) salinity conditions. This analysis revealed 5431 differentially expressed genes (DEGs), with 2372 upregulated and 3059 downregulated. Notably, these DEGs were enriched in crucial biological pathways like metabolism, osmoregulation, and signal transduction. To validate the RNA-seq data, we further analyzed 15 DEGs of interest using qRT-PCR. Our results suggest a multifaceted role for the eyestalk: maintaining energy homeostasis, regulating hormone synthesis and release, PKA activity, and downstream signaling, and ensuring proper ion and osmotic balance. Furthermore, our findings indicate that the crustacean hyperglycemic hormone (CHH) may function as a key regulator, modulating carbonic anhydrase expression through the activation of the PKA signaling pathway, thereby influencing cellular osmoregulation, and associated metabolic processes. Overall, our study provides valuable insights into unraveling the molecular mechanisms of mud crab acclimatization to low salinity environments.
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Affiliation(s)
- Nan Mo
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Shucheng Shao
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Zhaoxia Cui
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Chenchang Bao
- School of Marine Sciences, Ningbo University, Ningbo 315020, China.
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Mo N, Shao S, Yang Y, Bao C, Cui Z. Identifying low salinity adaptation gene expression in the anterior and posterior gills of the mud crab (Scylla paramamosain) by transcriptomic analysis. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 49:101166. [PMID: 38070330 DOI: 10.1016/j.cbd.2023.101166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/04/2023] [Accepted: 11/24/2023] [Indexed: 02/15/2024]
Abstract
In the present study, BGISEQ-500 RNA-Seq technology was adopted to investigate how Scylla paramamosain adapts to salinity tolerance at the molecular level and explores changes in gene expression linked to salinity adaptation following exposure to both low salinity (5 ‰) and standard salinity (23 ‰) conditions. A total of 1100 and 520 differentially expressed genes (DEGs) were identified in the anterior and posterior gills, respectively, and their corresponding expression patterns were visualized in volcano plots and a heatmap. Further analysis highlighted significant enrichment of well-established gene functional categories and signaling pathways, including those what associated with cellular stress response, ion transport, energy metabolism, amino acid metabolism, H2O transport, and physiological stress compensation. We also selected key DEGs within the anterior and posterior gills that encode pivotal stress adaptation and tolerance modulators, including AQP, ABCA1, HSP 10, A35, CAg, NKA, VPA, CAc, and SPS. Interestingly, A35 in the gills might regulate osmolality by binding CHH in response to low salinity stress or serve as a mechanism for energy compensation. Taken together, our findings elucidated the intricate molecular mechanism employed by S. paramamosain for salinity adaptation, which involved distinct gene expression patterns in the anterior and posterior gills. These findings provide the foothold for subsequent investigations into salinity-responsive candidate genes and contribute to a deeper understanding of S. paramamosain's adaptation mechanisms in low-salinity surroundings, which is crucial for the development of low-salinity species cultivation and the establishment of a robust culture model.
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Affiliation(s)
- Nan Mo
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Shucheng Shao
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Yanan Yang
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Chenchang Bao
- School of Marine Sciences, Ningbo University, Ningbo 315020, China
| | - Zhaoxia Cui
- School of Marine Sciences, Ningbo University, Ningbo 315020, China.
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Mo N, Feng T, Zhu D, Liu J, Shao S, Han R, Lu W, Zhan P, Cui Z. Analysis of adaptive molecular mechanisms in response to low salinity in antennal gland of mud crab, Scylla paramamosain. Heliyon 2024; 10:e25556. [PMID: 38356600 PMCID: PMC10865330 DOI: 10.1016/j.heliyon.2024.e25556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 01/20/2024] [Accepted: 01/29/2024] [Indexed: 02/16/2024] Open
Abstract
As an important marine aquaculture species, the mud crab (Scylla paramamosain) is a good candidate for studying the osmoregulatory mechanism of crustaceans. While previous studies have focused on the osmoregulatory function of the gills, this study aims to explore the osmoregulatory function of the antennal glands. By the comparative transcriptomic analysis, we found the pathways of ion regulation including "proximal tubule bicarbonate reclamation" and "mineral absorption" were activated in the antennal glands of the crabs long-term dwelling in low salinity. The enhanced ionic reabsorption was associated with up-regulated ion transport genes such as NKA, CA-c, VPA, and NHE, and with energy metabolism genes such as MDH, SLC25, and PEPCK. The upregulation of NKA and CA-c was also verified by the increased enzyme activity. The lowered osmolality and ion concentration of the hemolymph and the enlarged labyrinth lumen and hemolymph capillary inside the antennal glands indicated the infiltration of external water and the responsively increase of urine excretion, which explained the requirement of enhanced ionic reabsorption. To further confirm these findings, we examined the change of gene expression, enzyme activity, internal ion concentration, and external ion concentration during a 96 h low salinity challenge with seven intervals. The results were basically consistent with the results as shown in the long-term low salinity adaptation. The present study provides valuable information on the osmoregulatory function of the antennal glands of S. paramamosain. The implication of this study in marine aquaculture is that it provides valuable information on the osmoregulatory mechanism of mud crabs, which can be used to improve their culture conditions and enhance their tolerance to salinity stress. The identified genes and pathways involved in osmoregulation can also be potential targets for genetic selection and breeding programs to develop more resilient mud crab strains for aquaculture.
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Affiliation(s)
- Nan Mo
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Tianyi Feng
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Dandan Zhu
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Jiaxin Liu
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Shucheng Shao
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Rui Han
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Wentao Lu
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Pingping Zhan
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
| | - Zhaoxia Cui
- School of Marine Sciences, Ningbo University, Ningbo, 315020, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
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Lu ZB, Li YD, Jiang SG, Yang QB, Jiang S, Huang JH, Yang LS, Chen X, Zhou FL. Transcriptome analysis of hepatopancreas in penaeus monodon under acute low pH stress. FISH & SHELLFISH IMMUNOLOGY 2022; 131:1166-1172. [PMID: 36410647 DOI: 10.1016/j.fsi.2022.11.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/12/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
The decrease of seawater pH can affect the metabolism, acid-base balance, immune response and immunoprotease activity of aquatic animals, leading to aquatic animal stress, impairing the immune system of aquatic animals and weakening disease resistance, etc. In this study, we performed high-throughput sequencing analysis of the hepatopancreas transcriptome library of low pH stress penaeus monodon, and after sequencing quality control, a total of 43488612-56271828 Clean Reads were obtained, and GO annotation and KEGG pathway enrichment analysis were performed on the obtained Clean Reads, and a total of 395 DEGs were identified. we mined 10 differentially expressed and found that they were significantly enriched in the Metabolic pathways (ko01100), Biosynthesis of secondary metabolites (ko01110), Nitrogen metabolism (ko00910) pathways, such as PIGA, DGAT1, DGAT2, UBE2E on Metabolic pathways; UGT, GLT1, TIM genes on Biosynthesis of secondary metabolites; CA, CA2, CA4 genes on Nitrogen metabolism, are involved in lipid metabolism, induction of oxidative stress and inflammation in the muscular body of spot prawns. These genes play an important role in lipid metabolism, induction of oxidative stress and inflammatory response in the muscle of the shrimp. In summary, these genes provide valuable reference information for future breeding of low pH-tolerant shrimp.
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Affiliation(s)
- Zhi-Bin Lu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Yun-Dong Li
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
| | - Shi-Gui Jiang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, 572018, China
| | - Qi-Bin Yang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China
| | - Song Jiang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China
| | - Jian-Hua Huang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China
| | - Li-Shi Yang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China
| | - Xu Chen
- Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, 572018, China
| | - Fa-Lin Zhou
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou, 510300, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya Tropical Fisheries Research Institute, Sanya, 572018, China.
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Zhu S, Yan X, Shen C, Wu L, Tang D, Wang Y, Wang Z. Transcriptome analysis of the gills of Eriocheir sinensis provide novel insights into the molecular mechanisms of the pH stress response. Gene 2022; 833:146588. [PMID: 35598683 DOI: 10.1016/j.gene.2022.146588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 04/26/2022] [Accepted: 05/16/2022] [Indexed: 11/04/2022]
Abstract
Eriocheir sinensis is an important economic species in China, which is easily affected by pH changes. However, the molecular mechanism of the pH stress response in E. sinensis is still unclear. Therefore, this study aimed to examine the molecular response mechanism of E. sinensis based on pH variation surveillance, histopathological evaluation and transcriptomic analyses. Firstly, pH variation surveillance showed that E. sinensis could actively regulate the pH of its environment. Meanwhile, the histopathological evaluation suggested that pH stress seriously damaged the gills, especially at high pH. Finally, transcriptome analysis showed that the expression of genes related to ion transport, immune stress, and energy metabolism significantly changed. Many genes played an important role in the pH response of E. sinensis, such as carbonic anhydrase (CA), mitochondrial proton/calcium exchanger protein (LETM1), recombinant sodium/hydrogen exchanger 3 (SLC9A3/NHE3), heat shock protein 90 alpha family class a member (HSP90A), alkylglycerone phosphate synthase (AGPS), succinate-CoA ligase ADP-forming subunit beta (LSC2), and superoxide dismutase (SOD). Our study revealed the molecular response mechanism of E. sinensis in response to pH stress, thus providing a basis for further research on the molecular mechanism of response to pH stress in aquatic animals.
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Affiliation(s)
- Shang Zhu
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China
| | - Xinyao Yan
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China
| | - Chenchen Shen
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China
| | - Lv Wu
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China
| | - Dan Tang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China; College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, Jiangsu Province, China
| | - Yue Wang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China
| | - Zhengfei Wang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetlands, Yancheng Teachers University, Yancheng 224001, Jiangsu Province, China.
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Su L, Zhu H, Chen S, Du M, Wan X, Liu Y, Hu S, Xu Y. Anti-Obesity and Gut Microbiota Regulation Effects of Phospholipids from the Eggs of Crab, Portunus Trituberculatus, in High Fat Diet-Fed Mice. Mar Drugs 2022; 20:md20070411. [PMID: 35877704 PMCID: PMC9318425 DOI: 10.3390/md20070411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022] Open
Abstract
There are resourceful phospholipids in the eggs of the crab, Portunus trituberculatus (Pt-PL). However, their components and bioactivities regarding obesity were unclear. Here, we investigated the composition of Pt-PL and their fatty acids. Moreover, its effects on obesity and gut microbiota were also evaluated in high fat diet (HFD)-fed mice. The results showed that Pt-PL contained 12 kinds of phospholipids, mainly including phosphatidylcholine (PC, 32.28%), phosphatidylserine (PS, 26.51%), phosphatidic acid (PA, 19.61%), phosphatidylethanolamine (PE, 8.81%), and phosphatidylinositol (PI, 7.96%). Polyunsaturated fatty acids (PUFAs) predominated in the fatty acids components of Pt-PL, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Animal experiments demonstrated that Pt-PL significantly alleviated body weight gain, adipose gain, hepatic gain, fasting blood glucose, serum insulin, lipid levels in serum and the liver, and systematic inflammation in HFD-fed mice. Furthermore, Pt-PL regulated gut microbiota, especially in a dramatic reduction in the ratio of Firmicutes to Bacteroidetes at phylum level, as well as significant amelioration in their subordinate categories. Pt-PL reduced fecal lipopolysaccharide and total bile acids, and elevated fecal short chain fatty acid (SCFA) concentrations, particularly acetate and butyrate. These findings suggest that Pt-PL possesses anti-obesity effects and can alter gut microbiota owing to the abundance of PUFAs. Therefore, Pt-PL may be developed as an effective food supplement for anti-obesity and regulation of human gut health.
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Affiliation(s)
- Laijin Su
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China;
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China
| | - Hongli Zhu
- National Engineering Research Center for Maine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (H.Z.); (S.C.); (M.D.); (X.W.); (Y.L.)
| | - Sichun Chen
- National Engineering Research Center for Maine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (H.Z.); (S.C.); (M.D.); (X.W.); (Y.L.)
| | - Mengyu Du
- National Engineering Research Center for Maine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (H.Z.); (S.C.); (M.D.); (X.W.); (Y.L.)
| | - Xiaofeng Wan
- National Engineering Research Center for Maine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (H.Z.); (S.C.); (M.D.); (X.W.); (Y.L.)
| | - Yishu Liu
- National Engineering Research Center for Maine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (H.Z.); (S.C.); (M.D.); (X.W.); (Y.L.)
| | - Shiwei Hu
- National Engineering Research Center for Maine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (H.Z.); (S.C.); (M.D.); (X.W.); (Y.L.)
- Correspondence: ; Tel.: +86-0580-8129858
| | - Yangli Xu
- Wenzhou Academy of Agricultural Science, Wenzhou Characteristic Food Resources Engineering and Technology Research Center, Wenzhou 325006, China;
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Ren X, Wang L, Xu Y, Wang Q, Lv J, Liu P, Li J. Characterization of p53 From the Marine Crab Portunus trituberculatus and Its Functions Under Low Salinity Conditions. Front Physiol 2021; 12:724693. [PMID: 34744765 PMCID: PMC8568311 DOI: 10.3389/fphys.2021.724693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/30/2021] [Indexed: 11/13/2022] Open
Abstract
Portunus trituberculatus, or the swimming crab, is tolerant of reduced salinity; however, the molecular mechanism of this tolerance is not clear. Cells can be damaged by hyperosmotic salinity. The protein p53, sometimes referred to as “the guardian of the genome,” displays versatile and important functions under changing environmental conditions. Herein, the P. trituberculatus p53 gene (designated as Ptp53) was cloned and studied. The full-length Ptp53 cDNA comprised 1,544bp, with a 1,314bp open reading frame, which encodes a putative polypeptide of 437 amino acids. Quantitative real-time reverse transcription PCR assays revealed ubiquitous expression of Ptp53 in all tissues examined, with the gills showing the highest expression level. Extensive apoptosis was detected under low salinity conditions using terminal deoxynucleotidyl transferase nick-end-labeling staining. Oxidative stress was induced under low salinity conditions, consequently leading to apoptosis. Low salinity stress caused significant upregulation of Ptp53 mRNA and protein levels in the gills. Moreover, compared with that in the control group, the mortality of Ptp53-silenced crabs under low salinity stress was enhanced significantly. Taken together, our findings suggest that Ptp53, via regulation of apoptosis and antioxidant defense, played important functions in the low salinity stress response of the swimming crab.
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Affiliation(s)
- Xianyun Ren
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Lei Wang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yao Xu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang, China
| | - Qiong Wang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jianjian Lv
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ping Liu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jian Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Sharker MR, Sukhan ZP, Sumi KR, Choi SK, Choi KS, Kho KH. Molecular Characterization of Carbonic Anhydrase II (CA II) and Its Potential Involvement in Regulating Shell Formation in the Pacific Abalone, Haliotis discus hannai. Front Mol Biosci 2021; 8:669235. [PMID: 34026840 PMCID: PMC8138131 DOI: 10.3389/fmolb.2021.669235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/14/2021] [Indexed: 12/31/2022] Open
Abstract
Carbonic anhydrases (CAs) are a family of metalloenzymes that can catalyze the reversible interconversion of CO2/HCO3–, ubiquitously present in both prokaryotes and eukaryotes. In the present study, a CA II (designated as HdhCA II) was sequenced and characterized from the mantle tissue of the Pacific abalone. The complete sequence of HdhCA II was 1,169 bp, encoding a polypeptide of 349 amino acids with a NH2-terminal signal peptide and a CA architectural domain. The predicted protein shared 98.57% and 68.59% sequence identities with CA II of Haliotis gigantea and Haliotis tuberculata, respectively. Two putative N-linked glycosylation motifs and two cysteine residues could potentially form intramolecular disulfide bond present in HdhCA II. The phylogenetic analysis indicated that HdhCA II was placed in a gastropod clade and robustly clustered with CA II of H. gigantea and H. tuberculata. The highest level of HdhCA II mRNA expression was detected in the shell forming mantle tissue. During ontogenesis, the mRNA of HdhCA II was detected in all stages, with larval shell formation stage showing the highest expression level. The in situ hybridization results detected the HdhCA II mRNA expression in the epithelial cells of the dorsal mantle pallial, an area known to express genes involved in the formation of a nacreous layer in the shell. This is the first report of HdhCA II in the Pacific abalone, and the results of this study indicate that this gene might play a role in the shell formation of abalone.
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Affiliation(s)
- Md Rajib Sharker
- Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu, South Korea.,Department of Fisheries Biology and Genetics, Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali, Bangladesh
| | - Zahid Parvez Sukhan
- Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu, South Korea
| | - Kanij Rukshana Sumi
- Department of Aquaculture, Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali, Bangladesh
| | - Sang Ki Choi
- Department of Biological Sciences, College of Life Industry and Science, Sunchon National University, Jeonnam, South Korea
| | - Kap Seong Choi
- Department of Food Science and Technology, Sunchon National University, Jeonnam, South Korea
| | - Kang Hee Kho
- Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu, South Korea
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McLuckie C, Moltschaniwskyj N, Gaston T, Taylor MD. Effects of reduced pH on an estuarine penaeid shrimp (Metapenaeus macleayi). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115929. [PMID: 33162210 DOI: 10.1016/j.envpol.2020.115929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 10/09/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
Acid sulfate soils are a major problem in modified coastal floodplains and are thought to have substantial impacts on estuarine species. In New South Wales, Australia, acid sulfate soils occur in every estuary and are thought to impact important fisheries species, such as Eastern School Prawn (Metapenaeus macleayi). These fisheries have experienced declining productivity over the last ten years and increasing occurrence of catchment-derived stressors in estuaries contribute to this problem. We evaluated the effect of pH 4-7.5 on School Prawn survival at two salinities (27 and 14.5), pH 5, 6 and 7.5 on the predation escape response (PER) speed at two salinities (27 and 14.5), and pH 4 and 7.5 on respiration rates. While mortality appeared to be greater in the high salinity treatment, there was no significant relationship between proportional survival and pH for either salinity treatment. Respiration was significantly slower under acidic conditions and the average PER was almost twice as fast at pH 7.5 compared to pH 5 (p < 0.05), indicating prawns may fall prey to predation more easily in acidic conditions. These findings confirm the hypothesised impacts of acidic water on penaeid prawns. Given that the conditions simulated in these experiments reflect those encountered in estuaries, acidic runoff may be contributing to bottlenecks for estuarine species and impacting fisheries productivity.
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Affiliation(s)
- Catherine McLuckie
- School of Environmental and Life Sciences, University of Newcastle, University Drive, Callaghan, New South Wales, 2308, Australia.
| | - Natalie Moltschaniwskyj
- School of Environmental and Life Sciences, University of Newcastle, University Drive, Callaghan, New South Wales, 2308, Australia; Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, New South Wales, 2315, Australia
| | - Troy Gaston
- Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, New South Wales, 2315, Australia
| | - Matthew D Taylor
- School of Environmental and Life Sciences, University of Newcastle, University Drive, Callaghan, New South Wales, 2308, Australia; Port Stephens Fisheries Institute, New South Wales Department of Primary Industries, Locked Bag 1, Nelson Bay, New South Wales, 2315, Australia
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10
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Yamaguchi M, Soga K. Hemolymph composition, gene expressions in the gills, and thus the survival of euryhaline crabs are controlled by ambient minor cations according to osmotic condition-dependent manner. Ecol Evol 2020; 10:12183-12199. [PMID: 33209280 PMCID: PMC7664001 DOI: 10.1002/ece3.6846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 08/24/2020] [Indexed: 11/21/2022] Open
Abstract
Na+ and Cl- are the most abundant dissolved ions in seawater, constituting ~ 85% of total ions. They significantly affect the osmolality of body fluids of marine invertebrates. Seawater also contains minor ions such as Mg2+, Ca2+, K+, and SO4 2- , but their effects on marine organisms are unclear. This study analyzed the effects of Mg2+, Ca2+, and K+ (ambient minor cations) on survival, hemolymph ionic composition, and gene expression in the gills of three euryhaline crabs: Helice tridens, Macrophthalmus japonicus, and Chiromantes dehaani. Ambient minor cations were required for survival of H. tridens and M. japonicus under isosmotic conditions with seawater. The ambient minor cations also affected the osmolality and ionic composition of hemolymph by regulating expressions of specific genes in the gills required for Na+ uptake, such as Na+/K+ ATPase, cytoplasmic carbonic anhydrase, and Na+/H+ exchanger. Administration of carbonic anhydrase and Na+/H+ exchanger inhibitors increased the survival rate even if ambient minor cations did not exist. In contrast, under hypo-osmotic conditions, ambient minor cations had different effects on crabs, a lethal effect on M. japonicus, and an increase of the hemolymph K+ concentration in H. tridens and M. japonicus. It is thus concluded that the effects of ambient minor cations are osmolality-dependent. In contrast, in C. dehaani, the hemolymph ionic composition and survival rate were hardly affected by ambient minor cations, probably reflecting the habitat of this species. These results strongly indicated that C. dehaani is less susceptive to ambient minor cations compared to H. tridens and M. japonicus.
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Affiliation(s)
- Masahiro Yamaguchi
- Department of Chemistry and BiochemistryNational Institute of TechnologySuzuka CollegeSuzukaJapan
| | - Kouichi Soga
- Department of BiologyGraduate School of ScienceOsaka City UniversityOsakaJapan
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11
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Hu S, Du M, Su L, Yang H. Phosphatidylserine from Portunus trituberculatus Eggs Alleviates Insulin Resistance and Alters the Gut Microbiota in High-Fat-Diet-Fed Mice. Mar Drugs 2020; 18:md18090483. [PMID: 32971772 PMCID: PMC7551936 DOI: 10.3390/md18090483] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/31/2020] [Accepted: 09/10/2020] [Indexed: 02/08/2023] Open
Abstract
Portunus trituberculatus eggs contain phospholipids, whose components and bioactivity are unclear. Here, we investigated the fatty acid composition of phosphatidylserine from P. trituberculatus eggs (Pt-PS). Moreover, its effects on insulin resistance and gut microbiota were also evaluated in high-fat-diet-fed mice. Our results showed that Pt-PS accounted for 26.51% of phospholipids and contained abundant polyunsaturated fatty acids (more than 50% of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)). Animal experiments indicated that Pt-PS significantly decreased body weight and adipose weight gain, improved hyperglycemia and hyperinsulinemia, mitigated insulin resistance, and regulated circulatory cytokines. Pt-PS activated insulin receptor substrate 1 (IRS1) and increased the levels of IRS1-associated phosphatidylinositol 3-hydroxy kinase (PI3K), phosphorylated protein kinase B (Akt) protein, and plasma membrane glucose transporter 4 protein. Furthermore, Pt-PS modified the gut microbiota, inducing, especially, a dramatic decrease in the ratio of Firmicutes to Bacteroidetes at the phylum level, as well as a remarkable improvement in their subordinate categories. Pt-PS also reduced fecal lipopolysaccharide concentration and enhanced fecal acetate, propionate, and butyrate concentrations. Additionally, the effects of Pt-PS on alleviation of insulin resistance and regulation of intestinal bacteria were better than those of phosphatidylserine from soybean. These results suggest that Pt-PS mitigates insulin resistance by altering the gut microbiota. Therefore, Pt-PS may be developed as an effective food supplement for the inhibition of insulin resistance and the regulation of human gut health.
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Affiliation(s)
- Shiwei Hu
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan 316022, China; (S.H.); (M.D.)
| | - Mengyu Du
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan 316022, China; (S.H.); (M.D.)
| | - Laijin Su
- Wenzhou Academy of Agricultural Science, Wenzhou Characteristic Food Resources Engineering and Technology Research Center, Wenzhou 325006, China
- Correspondence: ; Tel.: +86-0580-8129858
| | - Huicheng Yang
- Zhejiang Marine Development Research Institute, Zhoushan 316021, China;
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12
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Song L, Lv J, Wang L, Sun D, Gao B, Liu P. Characterization of a chitinase-1 gene (PtCht-1) from a marine crab Portunus trituberculatus and its response to immune stress. Gene 2020; 741:144523. [PMID: 32142858 DOI: 10.1016/j.gene.2020.144523] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 01/05/2023]
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.
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Affiliation(s)
- Liu Song
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Jianjian Lv
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Lei Wang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Dongfang Sun
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Baoquan Gao
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ping Liu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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13
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Hu S, Wang J, Yan X, Yang H, Li S, Jiang W, Liu Y. Egg oil from Portunus trituberculatus alleviates insulin resistance through activation of insulin signaling in mice. Appl Physiol Nutr Metab 2019; 44:1081-1088. [PMID: 30802144 DOI: 10.1139/apnm-2018-0718] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2023]
Abstract
Marine bioactive lipids have been utilized to overcome insulin resistance. However, oil from swimming crab has never been studied. Here, we analyzed the constituents of egg oil from Portunus trituberculatus (Pt-egg oil) and investigated its protective effects against insulin resistance in mice on a high-fat diet. The results showed that Pt-egg oil contained 52.05% phospholipids, 8.61% free fatty acids (especially eicosapentaenoic acid and docosahexaenoic acid), 32.38% triglyceride, 4.79% total cholesterol, and ditissimus astaxanthin. Animal experiments showed that Pt-egg oil significantly mitigated insulin resistance and was associated with reductions in blood glucose, insulin, glucose tolerance, insulin tolerance, serum lipids, and hepatic glycogen. Pt-egg oil activated the phosphatidylinositol 3-hydroxy kinase (PI3K)/protein kinase B (Akt)/glucose transporter 4 pathway in skeletal muscle both at the transcriptional level and at the translational level. Pt-egg oil also promoted hepatic glycogen synthesis through activation of the PI3K/Akt/glycogen synthase kinase-3 beta pathway. These indicate that Pt-egg oil can be used as an alternative to marine bioactive lipids to improve insulin resistance.
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Affiliation(s)
- Shiwei Hu
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan, Zhoushan, 316022, China
| | - Jingfeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China
| | - Xiaojun Yan
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan, Zhoushan, 316022, China
| | - Huicheng Yang
- Zhejiang Marine Development Research Institute, Zhoushan 316021, China
| | - Shijie Li
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan, Zhoushan, 316022, China
| | - Wei Jiang
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan, Zhoushan, 316022, China
| | - Yu Liu
- Innovation Application Institute, Zhejiang Ocean University, Zhoushan, Zhoushan, 316022, China
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14
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Zhou QC, Shi B, Jiao LF, Jin M, Sun P, Ding LY, Yuan Y. Hepatopancreas and ovarian transcriptome response to different dietary soybean lecithin levels in Portunus trituberculatus. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2019; 31:100600. [PMID: 31228712 DOI: 10.1016/j.cbd.2019.100600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 01/24/2023]
Abstract
Ovaries (O) are specialized tissues that play critical roles in producing oocytes and hormones. The crustacean hepatopancreas (H) is a metabolic organ that plays important functions including absorption, storage of nutrients and vitellogenesis during growth and ovarian development. However, genetic information on the biological functions of the crustacean ovaries and hepatopancreas are limited. This study compared the transcriptome in the ovary and the hepatopancreas of female P. trituberculatus fed two different diets containing 0% (SL0) and 4% soybean lecithin (SL4), respectively during the growth and ovarian maturation stages by Illumina HiSeq4000 sequencer. The differences between ovary and hepatopancreas of P. trituberculatus were also compared at transcriptional level. A total of 55,667 unigenes were obtained with mean length of 962 bps across the four treatment groups (SL0_O, SL4_O, SL0_H and SL4_H). In ovary, there were 257 differentially expressed genes (DEGs) between SL0_O and SL4_O, with 145 down- and 112 up-regulated genes in the SL4_O group. Candidate genes involved in ovarian development were detected in SL4_H group. In hepatopancreas, 146 DEGs were found between SL0_H and SL4_H, including 43 down- and 103 up-regulated genes in the SL4_H group. The specific DEGs were mainly involved with lipid related metabolism pathways, including fat digestion and absorption, PPAR signaling pathway and insulin resistance. 14,725 DEGs were found in the comparison between SL0_O and SL4_H, including 7250 up- and 7475 down-regulated genes in the SL4_H group. The specific DEGs were mainly involved with lipid (fat digestion and absorption, linoleic acid metabolism), hormone (steroid hormone biosynthesis, ovarian steroidogenesis, etc), and amino acid (phenylalanine metabolism, arginine biosynthesis, tyrosine) related metabolism pathways. Crabs fed the SL4 diet exhibited higher gene expression of cryptocyanin 1 (cc1), cryptocyanin 2 (cc2) and neuroparsin 1 (np1) in hepatopancreas and ovarian than those fed the SL0 diet, however, crab fed SL4 diet showed higher gene expression of fatty acid-binding protein 1 (fabp1), vitellogenin (vtg) and Delta-6 desaturase-like protein (fadsd6) in hepatopancreas than those fed the SL0 diet. Moreover, crabs fed the SL0 diet had lower gene expression of vtg, extracellular copper‑zinc superoxide dismutase (cuznsod) and estrogen sulfotransferase (ests) in ovary compared to those fed the diet containing 4% soybean lecithin. These results might provide important clues with respect to elucidating the molecular mechanisms underlying the regulation of phospholipid on the gonadal development and lipid metabolism of P. trituberculatus.
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Affiliation(s)
- Qi-Cun Zhou
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China.
| | - Bo Shi
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Le-Fei Jiao
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Min Jin
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Peng Sun
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Li-Yun Ding
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Ye Yuan
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo 315211, China
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15
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Ge Q, Li J, Wang J, Li Z, Li J. Characterization, functional analysis, and expression levels of three carbonic anhydrases in response to pH and saline-alkaline stresses in the ridgetail white prawn Exopalaemon carinicauda. Cell Stress Chaperones 2019; 24:503-515. [PMID: 30915722 PMCID: PMC6527638 DOI: 10.1007/s12192-019-00987-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 12/14/2018] [Accepted: 01/02/2019] [Indexed: 01/22/2023] Open
Abstract
Carbonate alkalinity, salinity, and pH are three important stress factors for aquatic animals in saline-alkaline water. Carbonic anhydrases (CAs) catalyze the reversible reaction of CO2 reported to play an important role in the acid-base regulation in vertebrates. To explore the molecular mechanism of CAs efficacy in shrimp after their transfer into saline-alkaline water, the cDNAs of three CAs (EcCAc, EcCAg, and EcCAb) were cloned from Exopalaemon carinicauda. Sequence analysis showed that EcCAc and EcCAg both possessed a conserved α-CA domain and a proton acceptor site, and EcCAb contained a Pro-CA domain. Tissue expression analysis demonstrated that EcCAc and EcCAg were most abundantly in gills, and EcCAb was highly expressed in muscle. The cumulative mortalities remained below 25% under exposure to pH (pH 6 and pH 9), low salinity (5 ppt), or high carbonate alkalinity (5 and 10 mmol/L) after 72 h of exposure. However, mortalities increased up to 70% under extreme saline-alkaline stress (salinity 5 ppt, carbonate alkalinity 10 mmol/L, and pH 9) after 14 days of exposure. The EcCAc and EcCAg expressions in gills were significantly upregulated during the early period of pH and saline-alkaline stresses, while the EcCAb expressions showed no regular or large changes. The two-way ANOVA found significant interactions between salinity and carbonate alkalinity observed in EcCAc, EcCAg, and EcCAb expressions (p < 0.05). Furthermore, an RNA interference experiment resulted in increased mortality of EcCAc- and EcCAg-silenced prawns under saline-alkaline stress. EcCAc knockdown reduced expressions of Na+/H+ exchanger (EcNHE) and sodium bicarbonate cotransporter (EcNBC), and EcCAg knockdown reduced EcCAc, EcNHE, EcNBC, and V-type H+-ATPase (EcVTP) expressions. These results suggest EcCAc and EcCAg as important modulators in response to pH and saline-alkaline stresses in E. carinicauda.
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Affiliation(s)
- Qianqian Ge
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, People's Republic of China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China
| | - Jian Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, People's Republic of China.
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China.
| | - Jiajia Wang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, People's Republic of China
| | - Zhengdao Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, People's Republic of China
| | - Jitao Li
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, People's Republic of China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China
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16
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Cloning and characterisation of Na+/K+-ATPase and carbonic anhydrase from oriental river prawn Macrobrachium nipponense. Int J Biol Macromol 2019; 129:809-817. [DOI: 10.1016/j.ijbiomac.2019.02.098] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/16/2019] [Accepted: 02/16/2019] [Indexed: 01/04/2023]
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17
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Chen X, Chen J, Shen Y, Bi Y, Hou W, Pan G, Wu X. Transcriptional responses to low-salinity stress in the gills of adult female Portunus trituberculatus. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2018; 29:86-94. [PMID: 30463042 DOI: 10.1016/j.cbd.2018.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 11/03/2018] [Indexed: 01/22/2023]
Abstract
The swimming crab (Portunus trituberculatus, Portunus) can tolerate low salinity, but the mechanism of its varied salinity adaptation at the molecular level remains unclear. In this study, we prepared four mRNA and microRNA (miRNA) libraries using the gills collected from four salinity groups and performed RNA-sequencing (RNA-Seq) to identify the genes related to the low salinity. We set 25 ppt as the control group. A total of 659 genes were differentially expressed in at least one of the six comparison groups (25 ppt vs. 20 ppt, 25 ppt vs. 15 ppt, 25 ppt vs. 10 ppt, 20 ppt vs. 15 ppt, 20 ppt vs. 10 ppt and 15 ppt vs. 10 ppt). A total of 15 and 9 unigenes were downregulated and upregulated under low salinity compared with that in 25 ppt, respectively. Six genes, namely, aminopeptidase, centromere protein, cytochrome b5 reductase, bone morphogenetic protein, and two carbonic anhydrases, were selected for verification through quantitative real-time PCR. The results were consistent with the RNA-Seq results. Furthermore, 95 conserved miRNAs and 16 novel miRNAs were differentially expressed in at least one of the six comparison groups. Analysis of the miRNA-mRNA interaction showed that miR-2 and miR-317 regulated >50 mRNA targets. In addition, let-7c was downregulated in all groups under low salinity compared with that in the control group. This study helped elucidate the adaptation mechanism of the swimming crab in low-saline environments.
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Affiliation(s)
- Xiaowu Chen
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, No 999 Huchenghuan Road, Lingang New District, Shanghai 201306, China
| | - Jianpeng Chen
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, No 999 Huchenghuan Road, Lingang New District, Shanghai 201306, China
| | - Yawei Shen
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, No 999 Huchenghuan Road, Lingang New District, Shanghai 201306, China
| | - Yanhui Bi
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, No 999 Huchenghuan Road, Lingang New District, Shanghai 201306, China
| | - Wenjie Hou
- Shanghai Fisheries Research Institute and Shanghai Fisheries Technical Extension Station, Shanghai 200433, China
| | - Guiping Pan
- Shanghai Fisheries Research Institute and Shanghai Fisheries Technical Extension Station, Shanghai 200433, China
| | - Xugan Wu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, No 999 Huchenghuan Road, Lingang New District, Shanghai 201306, China; National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China.
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Zhou SM, Tao Z, Shen C, Qian D, Wang CL, Zhou QC, Jin S. β-actin gene expression is variable among individuals and not suitable for normalizing mRNA levels in Portunus trituberculatus. FISH & SHELLFISH IMMUNOLOGY 2018; 81:338-342. [PMID: 30017932 DOI: 10.1016/j.fsi.2018.07.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/06/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
The housekeeping gene encoding β-actin appears to be the most widely-used internal reference for gene expression studies in experimental animals or their cell lines. However, the effectiveness of β-actin to normalize mRNA levels expression in many crustacean species is still object of debate. To date, it is still unclear if β-actin is suitable to be utilized as the internal reference in qualitative real-time gene expression study in crab species. To address this concern, we evaluated 5 candidate reference genes encoding β-actin, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), cyclophilin A, elongation factor 1-α (EF1-α), and 18 S ribosomal RNA (18 S rRNA) in the swimming crabs (Portunus trituberculatus) models. Our data showed that the β-actin gene expression varied significantly across individual swimming crab individuals in gills or hemocytes and the expression of 18 S rRNA, EF1-α, cyclophilin or GAPDH gene were relatively stable compared to that of β-actin. Moreover, the expression stability of the reference genes among different tissues in normal crabs or after WSSV challenge was also tested by geNorm and NormFinder software. Among tissues, 18 S rRNA was most stably expressed in different tissues, followed by cyclophilin A and EF1-α, compared to β-actin and GAPDH. Upon to viral simulation, GAPDH was found to be the most stable internal control gene in gills and cyclophilin A was ranked as the most stable gene in hemocytes.
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Affiliation(s)
- Su-Ming Zhou
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Zhen Tao
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China; Fishery School, Zhejiang Ocean University, Zhoushan 316022, China
| | - Chen Shen
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Dong Qian
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Chun-Lin Wang
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Qi-Cun Zhou
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Shan Jin
- Key Laboratory of the Ministry of Education for Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo, 315211, China.
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Han SY, Wang BJ, Liu M, Wang MQ, Jiang KY, Liu XW, Wang L. Adaptation of the white shrimp Litopenaeus vannamei to gradual changes to a low-pH environment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 149:203-210. [PMID: 29175347 DOI: 10.1016/j.ecoenv.2017.11.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 11/17/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
pH variation could cause a stress response in euryhaline penaeids, we evaluated the mortality, growth performance, osmoregulation gene expression, digestive enzyme activity, histology, and resistance against Vibrio parahemolyticus of white shrimp Litopenaeus vannamei reared under conditions of gradual changes to a low-pH environment (gradual-low pH, 6.65-8.20) or a high-pH environment (gradual-high pH, 8.20-9.81) versus a normal pH environment (8.14-8.31) during a 28-d experiment. Consequently, under gradual-high pH, the cumulative mortality rate (CMR) rose with time until 39.9% on days 28; the weight gain percentage (WGP) and length gain percentage (LGP) decreased continuously. However, under gradual-low pH, the CMR of shrimp stabilized at 6.67% during 7-28 d; the WGP and LGP decreased first and then returned to normal. These results indicated that L. vannamei displayed a moderate tolerance to gradual-low pH, compared with gradual-high pH. Under gradual-low pH, the Na+/K+-ATPase, cytoplasmic carbonic anydrase (CAc), and glycosyl-phosphatidylinositol-linked carbonic anhydrase (CAg) transcripts of shrimp increased continuously or then back to normal; the amylase, lipase, and trypsin activities decreased first and then returned to normal or increased; the hepatopancreases and midguts showed histopathological lesions first and then got remission. Thus, the major adaptation mechanism of shrimp to gradual-low pH might be its high osmoregulation ability, which made shrimp achieve a new, balanced steady-state, then promoted longer intestinal villi and recuperative hepatopancreases of shrimp with enhanced digestive enzyme activities to increase nutrient absorption after long-term exposure. Meanwhile, the enhanced resistance against V. parahemolyticus under gradual-low pH would probably inhibit disease outbreak in the shrimp farming.
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Affiliation(s)
- Si-Yin Han
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Bao-Jie Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Mei Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Meng-Qiang Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Ke-Yong Jiang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Xin-Wei Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Lei Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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