期刊
NEW PHYTOLOGIST
卷 182, 期 3, 页码 608-620出版社
WILEY
DOI: 10.1111/j.1469-8137.2009.02823.x
关键词
abiotic stress; biotic stress; glutamine synthetase (GS); nitrogen metabolism; quantitative trait locus (QTL); regulation; remobilization; seed
资金
- Office of Science, US Department of Energy [DE-AC02-05CH11231]
- Biotechnology and Biological Sciences Research Council of the UK
- Biotechnology and Biological Sciences Research Council [BBS/E/C/00004955] Funding Source: researchfish
- BBSRC [BBS/E/C/00004955] Funding Source: UKRI
Glutamine synthetase assimilates ammonium into amino acids, thus it is a key enzyme for nitrogen metabolism. The cytosolic isoenzymes of glutamine synthetase assimilate ammonium derived from primary nitrogen uptake and from various internal nitrogen recycling pathways. In this way, cytosolic glutamine synthetase is crucial for the remobilization of protein-derived nitrogen. Cytosolic glutamine synthetase is encoded by a small family of genes that are well conserved across plant species. Members of the cytosolic glutamine synthetase gene family are regulated in response to plant nitrogen status, as well as to environmental cues, such as nitrogen availability and biotic/abiotic stresses. The complex regulation of cytosolic glutamine synthetase at the transcriptional to post-translational levels is key to the establishment of a specific physiological role for each isoenzyme. The diverse physiological roles of cytosolic glutamine synthetase isoenzymes are important in relation to current agricultural and ecological issues. New Phytologist (2009) 182: 608-620doi: 10.1111/j.1469-8137.2009.02823.x.
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