Document Detail

Comparative proteome analyses reveal that nitric oxide is an important signal molecule in the response of rice to aluminum toxicity.
MedLine Citation:
PMID:  23327584     Owner:  NLM     Status:  Publisher    
Acidic soils inhibit crop yield and reduce grain quality. One of the major contributing factors to acidic soil is the presence of soluble aluminum (Al(3+)) ions, but the mechanisms underlying plant responses to Al(3+) toxicity remain elusive. Nitric oxide (NO) is an important messenger and participates in various plant physiological responses. Here, we demonstrate that Al(3+) induced an increase of NO in rice seedlings; adding exogenous NO alleviated the Al(3+) toxicity related to rice growth and photosynthetic capacity, effects which could be reversed by suppressing NO metabolism. Comparative proteomic analyses successfully identified 92 proteins that showed differential expression after Al(3+) or NO treatment. In particular, some of the proteins are involved in reactive oxygen species (ROS) and reactive nitrogen species (RNS) metabolism. Further analyses confirmed that NO treatment reduced Al(3+)-induced ROS and RNS toxicities by increasing the activities and protein expression of antioxidant enzymes, as well as S-nitrosoglutathione reductase (GSNOR). Suppressing GSNOR enzymatic activity aggravated Al(3+) damage to rice and increased the accumulation of RNS. NO treatment altered the expression of proteins associated with cell wall synthesis, cell division and cell structure, calcium signaling and defense responses. Based on these results, we propose that NO activates multiple pathways that enhance rice adaptation to Al(3+) toxicity. Such findings may be applicable to crop engineering to enhance yield and improve stress tolerance.
Liming Yang; Dagang Tian; Christopher D Todd; Yuming Luo; Xiangyang Hu
Related Documents :
21902924 - Comparison of two possible routes of pathogen contamination of spinach leaves in a hydr...
16347584 - Optimization of banana juice fermentation for the production of microbial oil.
22617264 - The direct and ecological costs of an ant-plant symbiosis.
23536854 - Responses of soil co2 fluxes to short-term experimental warming in alpine steppe ecosys...
19776164 - Enhanced nodulation and nitrogen fixation in the abscisic acid low-sensitive mutant enh...
22989634 - Use of bio-amp, a commercial bio-additive for the treatment of grease trap wastewater c...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-17
Journal Detail:
Title:  Journal of proteome research     Volume:  -     ISSN:  1535-3907     ISO Abbreviation:  J. Proteome Res.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101128775     Medline TA:  J Proteome Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Prostanoids receptors signaling in different diseases/cancers progression.
Next Document:  Attachment of flexible heparin chains to gelatin scaffolds improves endothelial cell infiltration.