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Yuan C, Zhou K, Pan X, Wang D, Zhang C, Lin Y, Chen Z, Qin J, Du X, Huang Y. Comparative physiological, biochemical and transcriptomic analyses to reveal potential regulatory mechanisms in response to starvation stress in Cipangopaludina chinensis. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 52:101279. [PMID: 38941864 DOI: 10.1016/j.cbd.2024.101279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/03/2024] [Accepted: 06/14/2024] [Indexed: 06/30/2024]
Abstract
Cipangopaludina chinensis, as a financially significant species in China, represents a gastropod in nature which frequently encounters starvation stress owing to its limited prey options. However, the underlying response mechanisms to combat starvation have not been investigated in depth. We collected C. chinensis under several times of starvation stress (0, 7, 30, and 60 days) for nutrient, biochemical characteristics and transcriptome analyses. The results showed that prolonged starvation stress (> 30 days) caused obvious fluctuations in the nutrient composition of snails, with dramatic reductions in body weight, survival and digestive enzyme activity (amylase, protease, and lipase), and markedly enhanced the antioxidant enzyme activities of the snails. Comparative transcriptome analyses revealed 3538 differentially expressed genes (DEGs), which were significantly associated with specific starvation stress-responsive pathways, including oxidative phosphorylation and alanine, aspartate, and glutamate metabolism. Then, we identified 40 candidate genes (e.g., HACD2, Cp1, CYP1A2, and GPX1) response to starvation stress through STEM and WGCNA analyses. RT-qPCR verified the accuracy and reliability of the high-throughput sequencing results. This study provides insights into snail overwintering survival and the potential regulatory mechanisms of snail adaptation to starvation stress.
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Affiliation(s)
- Chang Yuan
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Kangqi Zhou
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Xianhui Pan
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China.
| | - Dapeng Wang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China.
| | - Caiqun Zhang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Yong Lin
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Zhong Chen
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Junqi Qin
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Xuesong Du
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Yin Huang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
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Cadmium Uptake, MT Gene Activation and Structure of Large-Sized Multi-Domain Metallothioneins in the Terrestrial Door Snail Alinda biplicata (Gastropoda, Clausiliidae). Int J Mol Sci 2020; 21:ijms21051631. [PMID: 32120996 PMCID: PMC7084494 DOI: 10.3390/ijms21051631] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 02/06/2023] Open
Abstract
Terrestrial snails (Gastropoda) possess Cd-selective metallothioneins (CdMTs) that inactivate Cd2+ with high affinity. Most of these MTs are small Cysteine-rich proteins that bind 6 Cd2+ equivalents within two distinct metal-binding domains, with a binding stoichiometry of 3 Cd2+ ions per domain. Recently, unusually large, so-called multi-domain MTs (md-MTs) were discovered in the terrestrial door snail Alinda biplicata (A.b.). The aim of this study is to evaluate the ability of A.b. to cope with Cd stress and the potential involvement of md-MTs in its detoxification. Snails were exposed to increasing Cd concentrations, and Cd-tissue concentrations were quantified. The gene structure of two md-MTs (9md-MT and 10md-MT) was characterized, and the impact of Cd exposure on MT gene transcription was quantified via qRT PCR. A.b. efficiently accumulates Cd at moderately elevated concentrations in the feed, but avoids food uptake at excessively high Cd levels. The structure and expression of the long md-MT genes of A.b. were characterized. Although both genes are intronless, they are still transcribed, being significantly upregulated upon Cd exposure. Overall, our results contribute new knowledge regarding the metal handling of Alinda biplicata in particular, and the potential role of md-MTs in Cd detoxification of terrestrial snails, in general.
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Roznere I, Watters GT, Wolfe BA, Daly M. Nontargeted metabolomics reveals biochemical pathways altered in response to captivity and food limitation in the freshwater mussel Amblema plicata. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2014; 12:53-60. [PMID: 25463058 DOI: 10.1016/j.cbd.2014.09.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 09/30/2014] [Accepted: 09/30/2014] [Indexed: 01/15/2023]
Abstract
Effective conservation of freshwater mussels (Mollusca: Bivalvia: Unionidae), one of the most endangered groups of animals in North America, is compromised by limited knowledge of their health. We address this gap in knowledge by characterizing the metabolic profile of Amblema plicata in the wild and in response to captivity and food limitation. Eight mussels brought into captivity from the wild were isolated for 18 days without a food source. Hemolymph samples were taken prior to, and 9 and 18 days after the start of the experiment; these samples were analyzed by gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry. We detected and identified 71 biochemicals in the hemolymph of freshwater mussels; of these, 49 showed significant changes during captivity and/or food limitation (p<0.05). Fasting resulted in severe metabolite depletion. Captive (but fed) mussels experienced changes similar to (albeit less severe than) fasting mussels, suggesting that mussels may experience nutritional deficiency under common captive conditions. A. plicata responded to food limitation stress by preferentially using energy reserves for maintenance rather than growth. Carbohydrate and energy metabolism exhibited down-regulation in captive, food-limited, and wild mussels. Lipid metabolism was up-regulated in captive/food-limited mussels and unchanged in wild mussels. Amino acid metabolism was up-regulated in wild mussels and down-regulated in captive/food-limited mussels. Nucleotide metabolism was up-regulated in the wild mussels, down-regulated in food-limited mussels, and unchanged in captive mussels. The different responses between treatment groups suggest potential for nucleotide metabolism as a biomarker of health status for freshwater mussels.
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Affiliation(s)
- Ieva Roznere
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH 43210, USA.
| | - G Thomas Watters
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH 43210, USA
| | - Barbara A Wolfe
- Department of Veterinary Preventive Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Marymegan Daly
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH 43210, USA
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