Cong, Ming1
; Li, Yuanmei1; Xu, Hongchao2; Lv, Jiasen2; Wu, Huifeng3; Zhao, Ye1发表期刊ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
2021-10-01
卷号222页码:7
关键词Ammonia nitrogenGill mitochondriaSwellingMtDNA copySuccinic dehydrogenaseMitochondrial ultrastructure
DOI10.1016/j.ecoenv.2021.112528
通讯作者Lv, Jiasen(lvjiasencong@163.com); Wu, Huifeng(hfwu@yic.ac.cn)
英文摘要Ammonia nitrogen has been one of the key pollution indicators along the Chinese coastline for quite a few years. Our previous studies have proved that ammonia nitrogen is harmful for Ruditapes philippinarum clam in several aspects. Environmental concentrations of ammonia nitrogen were found to significantly decrease ATP contents and disturb ATP metabolism, in addition to reducing the potential across the mitochondrial membrane in clam gill tissues. Accordingly, mitochondrion is considered as one of the target organelles of ammonia nitrogen toxicity in clams. However, there is a lack of direct evidence to prove it. In order to reveal detail information of ammonia nitrogen toxicity on clam mitochondria and screen the related biomarker to indicate ammonia nitrogen pollution, mitochondrial parameters in gill tissues including swelling, mtDNA copy number and marker enzyme (succinic dehydrogenase, SDH) activity were measured after the clams were exposed to 0.1 mg/L and 0.5 mg/L ammonia nitrogen for 3 days and 21 days, respectively. Moreover, adverse effects of ammonia nitrogen exposure on clam mitochondrial ultra-structures, mitochondrial swelling and division were also discriminated under transmission electron microscope (TEM). Final results showed that ammonia nitrogen exposure to both concentrations significantly induced mitochondrial swelling, reduced the number of mitochondria and messed their normal structure, decreased the number of mtDNA copies and down-regulated SDH activity, all in a concentration and duration dependent manner. So, the present study helps us to better understand the structural damage of ammonia nitrogen on mitochondria in clam gill cells and provides fundamental data for ammonia nitrogen control in aquaculture.
资助机构Natural Science Foundation of China
收录类别SCI
语种英语
关键词[WOS]DEHYDROGENASE ACTIVITY; TOXICITY; MTDNA
研究领域[WOS]Environmental Sciences & Ecology; Toxicology
WOS记录号WOS:000687402400006
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/29728
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
通讯作者Lv, Jiasen; Wu, Huifeng作者单位1.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China
2.Yantai Univ, Biol Sch, Yantai 264005, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Prov Key Lab Coastal Environm Proc,YICCA, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714Cong, Ming,Li, Yuanmei,Xu, Hongchao,et al. Ammonia nitrogen exposure caused structural damages to gill mitochondria of clam Ruditapes philippinarum[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,222:7.
APACong, Ming,Li, Yuanmei,Xu, Hongchao,Lv, Jiasen,Wu, Huifeng,&Zhao, Ye.(2021).Ammonia nitrogen exposure caused structural damages to gill mitochondria of clam Ruditapes philippinarum.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,222,7.
MLACong, Ming,et al."Ammonia nitrogen exposure caused structural damages to gill mitochondria of clam Ruditapes philippinarum".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 222(2021):7.
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