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Integrated physiological, transcriptome and metabolome analyses of the hepatopancreas of the female swimming crab Portunus trituberculatus under ammonia exposure.

Publication ,  Journal Article
Meng, X; Jayasundara, N; Zhang, J; Ren, X; Gao, B; Li, J; Liu, P
Published in: Ecotoxicology and environmental safety
November 2021

Ammonia is a common environmental pollutant in aquatic ecosystem and is also a significant concern in closed aquaculture systems. The threat of ammonia has been increasing with rising anthropogenic activities including intensified aquaculture. In this study, we aimed to investigate ammonia toxicity and metabolism mechanisms in the hepatopancreas, a major organ for Vitellogenin (Vtg) synthesis and defending against ammonia stress, of female swimming crab Portunus trituberculatus which is an important fishery and aquaculture species, by integrating physiological, transcriptome and metabolome analyses. The results revealed that ammonia exposure (10 mg/L, an environmentally relevant concentration) resulted in a remarkable reduction in vtg expression and depression of multiple signaling pathways for reproductive regulators including methyl farnesoate, ecdysone and neuroparsin, demonstrating for the first time that ammonia impairs swimming crab female reproduction. In addition, a number of important genes and metabolites in glycolysis, the Krebs cycle, fatty acid β-oxidation and synthesis were significantly downregulated, indicating that changes in ammonia levels lead to a general depression of energy metabolism in hepatopancreas. After ammonia exposure, an increased level of urea and a reduction of amino acid catabolism were observed in hepatopancreas, suggesting that urea cycle was utilized to biotransform ammonia, and amino acid catabolism was decreased to reduce endogenous ammonia generation. Furthermore, antioxidant systems were altered following ammonia exposure, which was accompanied by proteins and lipid oxidations, as well as cellular apoptosis. These results indicate that ammonia leads to metabolic suppression, oxidative stress and apoptosis in P. trituberculatus hepatopancreas. The findings improve the understanding for the mechanisms of ammonia toxicity and metabolism in P. trituberculatus, and provide valuable information for assessing potential ecological risk of environmental ammonia and improving aquaculture management.

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Published In

Ecotoxicology and environmental safety

DOI

EISSN

1090-2414

ISSN

0147-6513

Publication Date

November 2021

Volume

228

Start / End Page

113026

Related Subject Headings

  • Strategic, Defence & Security Studies
  • 4202 Epidemiology
  • 4102 Ecological applications
  • 4011 Environmental engineering
  • 11 Medical and Health Sciences
  • 05 Environmental Sciences
  • 03 Chemical Sciences
 

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Meng, X., Jayasundara, N., Zhang, J., Ren, X., Gao, B., Li, J., & Liu, P. (2021). Integrated physiological, transcriptome and metabolome analyses of the hepatopancreas of the female swimming crab Portunus trituberculatus under ammonia exposure. Ecotoxicology and Environmental Safety, 228, 113026. https://doi.org/10.1016/j.ecoenv.2021.113026
Meng, Xianliang, Nishad Jayasundara, Jingyan Zhang, Xianyun Ren, Baoquan Gao, Jian Li, and Ping Liu. “Integrated physiological, transcriptome and metabolome analyses of the hepatopancreas of the female swimming crab Portunus trituberculatus under ammonia exposure.Ecotoxicology and Environmental Safety 228 (November 2021): 113026. https://doi.org/10.1016/j.ecoenv.2021.113026.
Meng X, Jayasundara N, Zhang J, Ren X, Gao B, Li J, et al. Integrated physiological, transcriptome and metabolome analyses of the hepatopancreas of the female swimming crab Portunus trituberculatus under ammonia exposure. Ecotoxicology and environmental safety. 2021 Nov;228:113026.
Meng, Xianliang, et al. “Integrated physiological, transcriptome and metabolome analyses of the hepatopancreas of the female swimming crab Portunus trituberculatus under ammonia exposure.Ecotoxicology and Environmental Safety, vol. 228, Nov. 2021, p. 113026. Epmc, doi:10.1016/j.ecoenv.2021.113026.
Meng X, Jayasundara N, Zhang J, Ren X, Gao B, Li J, Liu P. Integrated physiological, transcriptome and metabolome analyses of the hepatopancreas of the female swimming crab Portunus trituberculatus under ammonia exposure. Ecotoxicology and environmental safety. 2021 Nov;228:113026.
Journal cover image

Published In

Ecotoxicology and environmental safety

DOI

EISSN

1090-2414

ISSN

0147-6513

Publication Date

November 2021

Volume

228

Start / End Page

113026

Related Subject Headings

  • Strategic, Defence & Security Studies
  • 4202 Epidemiology
  • 4102 Ecological applications
  • 4011 Environmental engineering
  • 11 Medical and Health Sciences
  • 05 Environmental Sciences
  • 03 Chemical Sciences