期刊
PLANT SCIENCE
卷 231, 期 -, 页码 184-190出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2014.12.005
关键词
Ammonia; Ammonium; Phytotoxicity; Cellular responses; Selective ammonia uptake, transport and detoxification
资金
- project of the Hungarian-Italian [TET_10-1-2011-0173, TET_12_DE-1-2013-0011]
- project of Hungarian-German TET [TET_10-1-2011-0173, TET_12_DE-1-2013-0011]
- SzIE MKK Research Centre of Excellence [17586-4/2013/TUDPOL]
Ammonia (ammonium ion under physiological conditions) is one of the key nitrogen sources in cellular amino acid biosynthesis. It is continuously produced in living organisms by a number of biochemical processes, but its accumulation in cells leads to tissue damage. Current knowledge suggests that a few enzymes and transporters are responsible for maintaining the delicate balance of ammonium fluxes in plant tissues. In this study we analyze the data in the scientific literature and the publicly available information on the dozens of biochemical reactions in which endogenous ammonium is produced or consumed, the enzymes that catalyze them, and the enzyme and transporter mutants listed in plant metabolic and genetic databases (Plant Metabolic Network, TAIR, and Genevestigator). Our compiled data show a surprisingly high number of little-studied reactions that might influence cellular ammonium concentrations. The role of ammonium in apoptosis, its relation to oxidative stress, and alterations in ammonium metabolism induced by environmental stress need to be explored in order to develop methods to manage ammonium toxicity. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据