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Glutamate dehydrogenase plays an important role in ammonium detoxi fication by submerged macrophytes

文献类型：期刊论文

作者Xian, Ling1,6; Zhang, Yizhi7; Cao, Yu6; Wan, Tao2,4,8; Gong, Yanbing3; Dai, Can5; Ochieng, Wyckliffe Ayoma1,8; Nasimiyu, Annah Timinah1,8; Li, Wei6; Liu, Fan6,8
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2020-06-20
卷号722页码:8
关键词Ammonium assimilation GDH Phytoremediation Submerged macrophytes Water restoration
ISSN号0048-9697
DOI10.1016/j.scitotenv.2020.137859
英文摘要Ammonium is a paradoxical chemical because it is a nutrient but also damages ecosystems at high concentration. As the most eco-friendly method of water restoration, phytoremediation technology still faces great challenges. To provide more theoretical support, we exploited six common submerged macrophytes and selected the most ammonium-tolerant and -sensitive species; then further explored and compared the mechanisms underlying ammonium detoxification. Our results showed the activity of glutamate dehydrogenase (GDH) in the ammonium-tolerant species Myriophyllum spicatum leaves performed a dose-response curve (increased 169% for NADH-dependent GDH and 103% for NADPH-dependent GDH) with the [NH4+-N] increasing from 0 to 100 mg/L while glutamine synthetase (GS) activity slightly changed. But for the ammonium-sensitive species, Potamogeton lucens, the activity of GDH recorded no major changes, while the GS increased slightly (17%). Based on this, we conclude that the alternative pathway of GDH is more important than the pathway catalyzed by GS in determining the tolerance of submerged macrophytes to high ammonium concentration (up to 100 mg N/L). Our present study identifies submerged macrophytes that are tolerant of high concentrations of ammonium and provides mechanistic support for practical water restoration by aquatic plants. (C) 2020 Elsevier B.V. All rights reserved.
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB31010104] ; National Key Research and Development Programme of China[2016YFA0601001] ; National Natural Science Foundation of China[31670369]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000535472600019
出版者ELSEVIER
源URL[http://202.127.146.157/handle/2RYDP1HH/15291]  
专题中国科学院武汉植物园
通讯作者Zhang, Yizhi; Liu, Fan
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Fairy Lake Bot Garden, Key Lab Southern Subtrop Plant Divers, Shenzhen, Peoples R China
3.Wuhan Univ, Coll Life Sci, Dept Ecol, State Key Lab Hybrid Rice, Wuhan 430072, Peoples R China
4.Chinese Acad Sci, Shenzhen 518004, Peoples R China
5.Hubei Univ, Sch Resources & Environm Sci, Wuhan 430062, Peoples R China
6.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China
7.Kunming Med Univ, Affiliated Hosp 1, NHC Key Lab Drug Addict Med, Kunming 650032, Yunnan, Peoples R China
8.Chinese Acad Sci, Sino Africa Joint Res Ctr, Wuhan 430074, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Xian, Ling,Zhang, Yizhi,Cao, Yu,et al. Glutamate dehydrogenase plays an important role in ammonium detoxi fication by submerged macrophytes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,722:8.
APA Xian, Ling.,Zhang, Yizhi.,Cao, Yu.,Wan, Tao.,Gong, Yanbing.,...&Liu, Fan.(2020).Glutamate dehydrogenase plays an important role in ammonium detoxi fication by submerged macrophytes.SCIENCE OF THE TOTAL ENVIRONMENT,722,8.
MLA Xian, Ling,et al."Glutamate dehydrogenase plays an important role in ammonium detoxi fication by submerged macrophytes".SCIENCE OF THE TOTAL ENVIRONMENT 722(2020):8.

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来源：武汉植物园

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