Hydrogen peroxide is involved in the cold acclimation-induced chilling tolerance of tomato plants

2012 ◽  
Vol 60 ◽  
pp. 141-149 ◽  
Author(s):  
Jie Zhou ◽  
Jian Wang ◽  
Kai Shi ◽  
Xiao Jian Xia ◽  
Yan Hong Zhou ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Cold Acclimation ◽  
Chilling Tolerance ◽  
Tomato Plants

scholarly journals Crosstalk between Nitric Oxide and MPK1/2 Mediates Cold Acclimation-induced Chilling Tolerance in Tomato

2017 ◽  
Vol 58 (11) ◽  
pp. 1963-1975 ◽  
Author(s):  
Xiangzhang Lv ◽  
Shibei Ge ◽  
Golam Jalal Ahammed ◽  
Xun Xiang ◽  
Zhixin Guo ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Cold Acclimation ◽  
Chilling Tolerance

scholarly journals Exogenous Application of Glycinebetaine Increases Chilling Tolerance in Tomato Plants

2006 ◽  
Vol 47 (6) ◽  
pp. 706-714 ◽  
Author(s):  
Eung-Jun Park ◽  
Zoran Jeknic ◽  
Tony H. H. Chen
Keyword(s):  
Chilling Tolerance ◽  
Tomato Plants ◽  
Exogenous Application

Abscisic Acid-Induced Chilling Tolerance in Maize Seedlings Is Mediated by Nitric Oxide and Associated with Antioxidant System

2011 ◽  
Vol 378-379 ◽  
pp. 423-427 ◽  
Author(s):  
Hai Yan Li ◽  
Wan Zhong Zhang
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Hydrogen Peroxide ◽  
Lipid Peroxidation ◽  
Abscisic Acid ◽  
Chilling Stress ◽  
Chilling Tolerance ◽  
Maize Seedlings ◽  
No Donor ◽  
Contrary Effect

Abscisic acid (ABA) and sodium nitroprusside (SNP) treatment significantly increased chilling tolerance in maize seedlings. ABA in combination with nitric oxide (NO) donor SNP further enhanced the ABA-induced chilling tolerance. But the addition of NO scavenger 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO) nullified the increasing effect of SNP on chilling tolerance. In addition, the combination of ABA and PTIO decreased the ABA-induced chilling tolerance. Measurement of activities of superoxide dismutase (SOD) and catalase (CAT), hydrogen peroxide (H2O2) content and the level of lipid peroxidation (in terms of malondialdehyde) indicated that chilling stress induced an oxidative stress in maize seedlings. ABA treatment enabled maize seedlings to maintain higher SOD and CAT activities and lower level of H2O2 and lipid peroxidation under chilling stress. ABA in combination with SNP further enhanced the ABA-induced increase in SOD and CAT activities and lowered the chilling stress-induced lipid peroxidation in the ABA-treated seedlings. But the addition of PTIO scavenged the increasing effect of SNP. In addition, the combination of ABA and PTIO had a contrary effect with that of ABA and SNP. These results suggest that the ABA-induced chilling tolerance is mediated by NO, NO is involved in ABA-induced chilling tolerance by increasing activities of antioxidant enzymes and reduced endogenous H2O2 accumulation.

scholarly journals Oxidative Stress and Chilling Tolerance in Tomato Seedlings

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 645b-645
Author(s):  
Kanogwan Kerdnaimongkol ◽  
Anju Bhatia ◽  
Robert J. Joly ◽  
William R. Woodson
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Superoxide Dismutase ◽  
Diurnal Variation ◽  
Chilling Stress ◽  
Chilling Injury ◽  
Chilling Tolerance ◽  
Light Period ◽  
Tomato Seedlings ◽  
Chilling Sensitivity

Diurnal variation in the chilling sensitivity of tomato seedlings was examined. Sensitivity to chilling in tomato seedlings is a response to light and not under the control of a circadian rhythm. Chilling sensitivity is highest in seedlings chilled at the end of the dark period, and these seedlings become more resistant to chilling injury upon exposure to the light. Diurnal variation in chilling sensitivity was associated with changes in catalase and superoxide dismutase activities. The results show an increase in catalase and superoxide dismutase activities at the end of the light period. The recovery of the net photosynthesis rate following chilling was faster in seedlings chilled at the end of the light period. It is suggested that an increase in catalase and superoxide dismutase activities at the end of light period before the chilling plays a role in the resistance to chilling stress in tomato seedlings. Forty-eight hours of 14°C acclimation or hydrogen peroxide pretreatment conferred chilling tolerance to tomato seedlings and were correlated with elevated catalase activity. Acclimated seedlings still exhibited diurnal variation in chilling sensitivity while hydrogen peroxide treated seedlings showed little evidence of a diurnal variation in chilling sensitivity. Transgenic tomato plants expressing an antisense catalase gene were generated. A several-fold decrease in total catalase has been detected in the leaf extracts of transformants. Preliminary analysis of these plants indicated that modification of reactive oxygen species scavenging in plant system can lead to change in oxidative stress tolerance.

scholarly journals Overexpression of PbDHAR2 from Pyrus sinkiangensis in Transgenic Tomato Confers Enhanced Tolerance to Salt and Chilling Stresses

HortScience ◽  
2015 ◽  
Vol 50 (6) ◽  
pp. 789-796 ◽  
Author(s):  
An Qin ◽  
Xiaosan Huang ◽  
Huping Zhang ◽  
Juyou Wu ◽  
Jie Yang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Chilling Tolerance ◽  
Antioxidant Enzyme Activity ◽  
Transgenic Tomato ◽  
Wild Type ◽  
Tomato Plants ◽  
Chlorophyll Contents ◽  
Transgenic Tomato Plants ◽  
Transgenic Lines ◽  
Redox Buffer

Ascorbic acid (AsA) is a major antioxidant and redox buffer in plants. Dehydroascorbate reductase (DHAR; EC 1.8.5.1) catalyzes the conversion of dehydroascorbate (DHA) to AsA and is crucial for AsA regeneration. In this study, we developed transgenic tomato plants that overexpressed PbDHAR2 to investigate whether PbDHAR2 could limit the deleterious effects of salt and chilling stresses. These transgenic plants contained significantly higher AsA levels than the wild-type (WT) plants. Overexpression of PbDHAR2 increased the expression of the AsA-glutathione (GSH) cycle genes in transgenic lines under salt and chilling stresses. In addition, the transgenic lines subjected to salt and chilling stresses showed higher levels of antioxidant enzyme activity, lower malondialdehyde (MDA) levels, and higher chlorophyll contents than the WT. Thus, our results demonstrate that the regulation of PbDHAR2 during AsA regeneration contributes to enhanced salt and chilling tolerance in tomato.

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