title: Rearrangement of nitrogen metabolism in rice (Oryza sativa L.) under salt stress.
abstract: Salt stress is an important environmental condition limiting the agricultural production. The reprogram of protein expression is one of the strategies of plants to cope with salt stress. We have previously analyzed the photosynthesis, antioxidant and oxidative phosphorylation involved in the carbon metabolism and the redox metabolism in rice seedlings under salt stress. Here, we focused on the proteins involved in nitrogen metabolic response. As it was reported that the nitrite uptake was enhanced in Arabidopsis PII knock-out mutants, the down-regulation of P-II nitrogen sensing protein in rice probably contributes to the accumulation of amino acids under stress. In addition, the protein synthesis is limited by the decrease of related proteins, and more amino acids could be used as the compatible solute. Hence, our study indicates that the rearrangement of nitrogen metabolism under salt stress could accumulate more amino acids as the compatible solute rather than the components of proteins. This study provides information for an improved understanding of nitrogen metabolic response to salt stress in rice.
authors.affiliation: a State key laboratory of crop genetics and germplasm enhancement, Nanjing Agricultural University , Nanjing , China.|b Institute of Industrial Crops, Jiangsu Academy of Agricultural Science , Nanjing , China.
authors.forename: Jianwen
authors.initials: J
authors.lastname: Xu
authors.affiliation: a State key laboratory of crop genetics and germplasm enhancement, Nanjing Agricultural University , Nanjing , China.
authors.forename: Xi
authors.initials: X
authors.lastname: Huang
authors.affiliation: a State key laboratory of crop genetics and germplasm enhancement, Nanjing Agricultural University , Nanjing , China.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Lan
authors.affiliation: a State key laboratory of crop genetics and germplasm enhancement, Nanjing Agricultural University , Nanjing , China.
authors.forename: Hongsheng
authors.initials: H
authors.lastname: Zhang
authors.affiliation: a State key laboratory of crop genetics and germplasm enhancement, Nanjing Agricultural University , Nanjing , China.
authors.forename: Ji
authors.initials: J
authors.lastname: Huang
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D012275:Oryza / Q000187:drug effects / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D012965:Sodium Chloride / Q000378:metabolism*; D013312:Stress, Physiological
chemical_list: D000596:Amino Acids; D010940:Plant Proteins; D012965:Sodium Chloride; D009584:Nitrogen
keywords: Nitrogen metabolism; proteome; rice (Oryza sativa L.); salt stress
references.citation: J Exp Bot. 2012 Feb;63(4):1593-608
references.pmid: 22291134
references.citation: Curr Opin Microbiol. 2005 Apr;8(2):168-73
references.pmid: 15802248
references.citation: Plant J. 2008 Jan;53(1):11-28
references.pmid: 17971042
references.citation: Plant Biol (Stuttg). 2010 May 1;12(3):395-405
references.pmid: 20522175
references.citation: PLoS One. 2015 Mar 20;10(3):e0120978
references.pmid: 25793471
references.citation: FEBS Lett. 2008 Apr 2;582(7):1061-6
references.pmid: 18325336
references.citation: Annu Rev Plant Physiol Plant Mol Biol. 2000 Jun;51:463-499
references.pmid: 15012199