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Involvement of nitric oxide synthase-dependent nitric oxide and exogenous nitric oxide in alleviating NaCl induced osmotic and oxidative stress in Arabidopsis thaliana
Zhang, Bo1,2; Wang, Haiqing1; Wang, Pei1,2; Zhang, Huaigang1
2010-07-04
Source PublicationAFRICAN JOURNAL OF AGRICULTURAL RESEARCH
ISSN1991-637X
Volume5Issue:13Pages:1713-1721
SubtypeArticle
AbstractTo elucidate the roles of endogenous nitric oxide on Arabidopsis thaliana tolerance to salt stress, a moderate concentration of NaCl was applied to wild-type (WT) and mutant (Atnoa1) plants which have an impaired in vivo nitric oxide synthase and reduced endogenous nitric oxide content due to T-DNA insertion in the first exon of the NOA1 gene. The exhibited greater inhibition of root growth, higher leaf water loss (LWL), lower contents of chlorophyll, soluble protein, proline, higher activities of peroxidase (POD), ascorbate peroxide (APX), and gluthinone reductase (GR), it also showed lower activities of superoxide dismutase (SOD) and catalase (CAT) than wild-type plants under NaCl stress. The nitric oxide synthase (NOS) inhibitor NG-nitro-L-Arg (L-NNA) enhanced NaCl induced growth inhibition, osmotic stress, and oxidative stress in wild-type plants. Meanwhile the NO donor, sodium nitroprusside (SNP), alleviated the NaCl induced damages in Atnoa1 plants. These results indicate that both NOS-dependent endogenous NO and exogenous NO were involved in salt resistance in A. thaliana.; To elucidate the roles of endogenous nitric oxide on Arabidopsis thaliana tolerance to salt stress, a moderate concentration of NaCl was applied to wild-type (WT) and mutant (Atnoa1) plants which have an impaired in vivo nitric oxide synthase and reduced endogenous nitric oxide content due to T-DNA insertion in the first exon of the NOA1 gene. The exhibited greater inhibition of root growth, higher leaf water loss (LWL), lower contents of chlorophyll, soluble protein, proline, higher activities of peroxidase (POD), ascorbate peroxide (APX), and gluthinone reductase (GR), it also showed lower activities of superoxide dismutase (SOD) and catalase (CAT) than wild-type plants under NaCl stress. The nitric oxide synthase (NOS) inhibitor NG-nitro-L-Arg (L-NNA) enhanced NaCl induced growth inhibition, osmotic stress, and oxidative stress in wild-type plants. Meanwhile the NO donor, sodium nitroprusside (SNP), alleviated the NaCl induced damages in Atnoa1 plants. These results indicate that both NOS-dependent endogenous NO and exogenous NO were involved in salt resistance in A. thaliana.
KeywordAntioxidant Enzymes Arabidopsis Thaliana Reactive Oxygen Species
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordPLANT SALT TOLERANCE ; SALINITY RESISTANCE ; ACTIVE OXYGEN ; WATER-STRESS ; PROLINE ; GLUTATHIONE ; ASCORBATE ; GROWTH ; CHLOROPLASTS ; RESPONSES
Indexed BySCI
Language英语
WOS Research AreaAgriculture
WOS SubjectAgriculture, Multidisciplinary
WOS IDWOS:000280348800022
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/1670
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, NW Inst Plateau Biol, Xining 810001, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Bo,Wang, Haiqing,Wang, Pei,et al. Involvement of nitric oxide synthase-dependent nitric oxide and exogenous nitric oxide in alleviating NaCl induced osmotic and oxidative stress in Arabidopsis thaliana[J]. AFRICAN JOURNAL OF AGRICULTURAL RESEARCH,2010,5(13):1713-1721.
APA Zhang, Bo,Wang, Haiqing,Wang, Pei,&Zhang, Huaigang.(2010).Involvement of nitric oxide synthase-dependent nitric oxide and exogenous nitric oxide in alleviating NaCl induced osmotic and oxidative stress in Arabidopsis thaliana.AFRICAN JOURNAL OF AGRICULTURAL RESEARCH,5(13),1713-1721.
MLA Zhang, Bo,et al."Involvement of nitric oxide synthase-dependent nitric oxide and exogenous nitric oxide in alleviating NaCl induced osmotic and oxidative stress in Arabidopsis thaliana".AFRICAN JOURNAL OF AGRICULTURAL RESEARCH 5.13(2010):1713-1721.
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