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Nitric oxide induced by polyamines involves antioxidant systems against chilling stress in tomato (Lycopersicon esculentum Mill.) seedling
Alternative TitleNitric oxide induced by polyamines involves antioxidant systems against chilling stress in tomato ( Lycopersicon esculentum Mill.) seedling * #
Diao Qiannan; Song Yongjun; Shi Dongmei; Qi Hongyan
2016
Source PublicationJOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B
ISSN1673-1581
Volume17Issue:12Pages:916-930
AbstractPolyamines (PAs) and nitric oxide (NO) are vital signals in modulating plant response to abiotic stress. However, to our knowledge, studies on the relationship between NO and PAs in response to cold stress in tomato are limited. Accordingly, in this study, we investigated the effects of putrescine (Put) and spermidine (Spd) on NO generation and the function of Spd-induced NO in the tolerance of tomato seedling under chilling stress. Spd increased NO release via the nitric oxide synthase (NOS)-like and nitrate reductase (NR) enzymatic pathways in the seedlings, whereas Put had no such effect. Moreover, H2O2 might act as an upstream signal to stimulate NO production. Both exogenous NO donor (sodium nitroprusside (SNP)) and Spd enhanced chilling tolerance in tomato, thereby protecting the photosynthetic system from damage. Compared to chilling treatment alone, Spd enhanced the gene expressions of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), and their enzyme activities in tomato leaves. However, a scavenger or inhibitor of NO abolished Spd-induced chilling tolerance and blocked the increased expression and activity due to Spd of these antioxidant enzymes in tomato leaves under chilling stress. The results showed that NO induced by Spd plays a crucial role in tomato's response to chilling stress.
Other AbstractPolyamines (PAs) and nitric oxide (NO) are vital signals in modulating plant response to abiotic stress. However, to our knowledge, studies on the relationship between NO and PAs in response to cold stress in tomato are limited. Accordingly, in this study, we investigated the effects of putrescine (Put) and spermidine (Spd) on NO generation and the function of Spd-induced NO in the tolerance of tomato seedling under chilling stress. Spd increased NO release via the nitric oxide synthase (NOS)-like and nitrate reductase (NR) enzymatic pathways in the seedlings, whereas Put had no such effect. Moreover, H 2 O 2 might act as an upstream signal to stimulate NO production. Both exogenous NO donor (sodium nitroprusside (SNP)) and Spd enhanced chilling tolerance in tomato, thereby protecting the photosynthetic system from damage. Compared to chilling treatment alone, Spd enhanced the gene expressions of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), and their enzyme activities in tomato leaves. However, a scavenger or inhibitor of NO abolished Spd-induced chilling tolerance and blocked the increased expression and activity due to Spd of these antioxidant enzymes in tomato leaves under chilling stress. The results showed that NO induced by Spd plays a crucial role in tomato’s response to chilling stress.
KeywordINDUCED OXIDATIVE DAMAGE HYDROGEN-PEROXIDE ABIOTIC STRESS COLD-ACCLIMATION LOW-TEMPERATURE CELL-DEATH CHLOROPHYLL FLUORESCENCE PHYSIOLOGICAL STRATEGIES ARABIDOPSIS-THALIANA ASCORBATE PEROXIDASE Antioxidant enzymes Chilling tolerance Hydrogen peroxide Nitric oxide Spermidine Tomato
Indexed ByCSCD
Language英语
Funding Project[China Agriculture Research System] ; [Liaoning Innovative Research Team in University, China]
CSCD IDCSCD:5879956
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149303
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Diao Qiannan,Song Yongjun,Shi Dongmei,et al. Nitric oxide induced by polyamines involves antioxidant systems against chilling stress in tomato (Lycopersicon esculentum Mill.) seedling[J]. JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B,2016,17(12):916-930.
APA Diao Qiannan,Song Yongjun,Shi Dongmei,&Qi Hongyan.(2016).Nitric oxide induced by polyamines involves antioxidant systems against chilling stress in tomato (Lycopersicon esculentum Mill.) seedling.JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B,17(12),916-930.
MLA Diao Qiannan,et al."Nitric oxide induced by polyamines involves antioxidant systems against chilling stress in tomato (Lycopersicon esculentum Mill.) seedling".JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B 17.12(2016):916-930.
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