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

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.

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

Flexible change and cooperation between mitochondrial electron transport and cytosolic glycolysis as the basis for chilling tolerance in tomato plants

Planta ◽  
2012 ◽  
Vol 237 (2) ◽  
pp. 589-601 ◽  
Author(s):  
Kai Shi ◽  
Li-Jun Fu ◽  
Shuai Zhang ◽  
Xin Li ◽  
Yang-Wen-Ke Liao ◽  
...  
Keyword(s):  
Electron Transport ◽  
Chilling Tolerance ◽  
Tomato Plants
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