Changes in lipid composition of winter wheat leaves under low temperature stress: effect of molybdenum supply

1995 ◽  
Vol 37 (4) ◽  
Author(s):  
I. A. Yaneva ◽  
R. V. Vunkova-Radeva ◽  
K. L. Stefanov ◽  
A. S. Tsenov ◽  
T. P. Petrova ◽  
...  
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Temperature Stress ◽  
Lipid Composition ◽  
Low Temperature Stress ◽  
Stress Effect ◽  
Wheat Leaves

Differential Expression of Proteins in Response to Molybdenum Deficiency in Winter Wheat Leaves Under Low-Temperature Stress

2014 ◽  
Vol 32 (5) ◽  
pp. 1057-1069 ◽  
Author(s):  
Xuecheng Sun ◽  
Qiling Tan ◽  
Zhaojun Nie ◽  
Chengxiao Hu ◽  
Yongqiang An
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Differential Expression ◽  
Temperature Stress ◽  
Low Temperature Stress ◽  
Wheat Leaves

Effect of freezing resistance and low-temperature stress on development of cottony snow mold (Coprinus psychromorbidus) in winter wheat

1988 ◽  
Vol 66 (8) ◽  
pp. 1610-1615 ◽  
Author(s):  
D. A. Gaudet ◽  
T. H. H. Chen
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Temperature Stress ◽  
Negative Relationship ◽  
Triticum Aestivum L ◽  
Low Temperature Stress ◽  
Freezing Resistance ◽  
Snow Mold ◽  
Canadian Prairies ◽  
Mold Resistance

The relationship between snow mold resistance and freezing resistance was studied under controlled-environment conditions, using winter wheat (Triticum aestivum L. em. Thell) cultivars varying in freezing resistance and resistance to cottony snow mold (Coprinus psychromorbidus Redhead & Traquair). Cultivars varying in freezing resistance were equally susceptible to C. psychromorbidus. There existed a negative relationship between snow mold resistance and freezing resistance. Sublethal, subzero freezing temperatures between −3 and −12 °C predisposed the winter wheat cultivar 'Winalta' to increased damage by C. psychromorbidus. A synergistic effect resulting in increased mortality was observed when winter wheat plants received a combination of low-temperature stress and inoculation with C. psychromorbidus. In hardened winter wheat plants, sublethal levels of snow mold damage following 6 weeks incubation with C. psychromorbidus resulted in a reduction in freezing resistance or LT50 (50% killing temperature) of approximately 7 °C compared with the noninoculated controls. The possible role of low-temperature stress on the susceptibility of winter wheats to C. psychromorbidus and of snow mold infection on the retention of freezing resistance in winter wheats during winter in the central and northern Canadian prairies is discussed.

scholarly journals Transcriptome changes triggered by a short-term low temperature stress in winter wheat

2020 ◽  
Vol 107 (4) ◽  
pp. 329-336
Author(s):  
Andrius Aleliūnas ◽  
Kristina Jaškūnė ◽  
Gražina Statkevičiūtė ◽  
Gabija Vaitkevičiūtė ◽  
Gintaras Brazauskas ◽  
...  
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Temperature Stress ◽  
Low Temperature Stress ◽  
Short Term

scholarly journals Cloning and Functional Analysis of Expansin TaEXPA9 Homologs in Winter Wheat in Frigid Regions

2021 ◽  
Author(s):  
Ziyi Zhao ◽  
Baozhong Hu ◽  
Xu Feng ◽  
Fenglan li ◽  
Fumeng He ◽  
...  
Keyword(s):  
Low Temperature ◽  
Plant Growth ◽  
Winter Wheat ◽  
Temperature Stress ◽  
Cold Hardiness ◽  
Expression Patterns ◽  
Fluorescent Labeling ◽  
Low Temperature Stress ◽  
Wild Type ◽  
In The Wild

Abstract BackgroundLow temperature is an important factor that influences the ability of winter wheat to safely overwinter. Excessive low temperatures restrict the regrowth of winter wheat, thus decreasing agricultural output. Non-enzymatic expansins, which are related to plant growth, have been reported to respond to drought, salinity, and low temperature stress. We obtained an expansin gene, TaEXPA9, that is induced by low temperature from a transcriptome analysis of ‘Dongnong winter wheat no. 2’—a winter wheat with high cold hardiness—but the expression pattern and function of this gene were unknown. We therefore analyzed the expression patterns of TaEXPA9-A/B/D in D2 in response to different abiotic stresses and exogenous phytohormone treatments in different organs. The entire length of TaEXPA9-A/B/D was obtained, and green fluorescent labeling was used for subcellular localization analysis of TaEXPA9-A/B/D on onion epidermis. The 35S::TaEXPA9-A/B/D expression vector was constructed, and an overexpression transgenic Arabidopsis thaliana line was obtained to examine the effects of the homologs of this expansin on plant growth and low temperature stress resistance. ResultsThe results showed that TaEXPA9-A/B/D transcription significantly increased at 4°C low temperature stress, its expression level was higher in the roots, and TaEXPA9-A/B/D was localized to the cell wall. The roots were well-developed in the overexpression A. thaliana, and the growth-related markers and setting rate were better than in the wild-type. Recovery was stronger in the overexpression plants after frost stress. At 4°C low temperature stress, the antioxidant enzyme activity and osmoregulatory substance content in the TaEXPA9-A/B/D-overexpressing A. thaliana plants were significantly higher than in the wild-type plants, and the degree of membrane lipid peroxidation was lower. ConclusionsIn summary, TaEXPA9-A/B/D participates in the low-temperature stress response and may increase the scavenging of reactive oxygen species caused by low temperature stress through the protective enzyme system. Additionally, TaEXPA9-A/B/D can increase the levels of small molecular organic substances to resist osmotic stress caused by low temperature.

Physiological, proteomic and transcriptional responses of wheat to combination of drought or waterlogging with late spring low temperature

2014 ◽  
Vol 41 (7) ◽  
pp. 690 ◽  
Author(s):  
Xiangnan Li ◽  
Jian Cai ◽  
Fulai Liu ◽  
Tingbo Dai ◽  
Weixing Cao ◽  
...  
Keyword(s):  
Water Stress ◽  
Low Temperature ◽  
Winter Wheat ◽  
Grain Yield ◽  
Temperature Stress ◽  
Yield Loss ◽  
Low Temperature Stress ◽  
Physiological Level ◽  
Waterlogging Stress ◽  
C Metabolism

Spring low temperature events affect winter wheat (Triticum aestivum L.) during late vegetative or reproductive development, exposing plants to a subzero low temperature stress when winter hardening is lost. The increased climatic variability results in wheat being exposed to more frequent adverse impacts of combined low temperature and water stress, including drought and waterlogging. The responses of potted wheat plants cultivated in climatic chambers to these environmental perturbations were investigated at physiological, proteomic and transcriptional levels. At the physiological level, the depressed carbon (C) assimilation induced by the combined stresses was due mainly to stomatal closure and damage of photosynthetic electron transport. Biochemically, the adaptive effects of early moderate drought or waterlogging stress were associated with the activation of antioxidant enzyme system in chloroplasts and mitochondria of leaf under low temperature. Further proteomic analysis revealed that the oxidative stress defence, C metabolism and photosynthesis related proteins were modulated by the combined low temperature and water stress. Collectively, the results indicate that impairment of photosynthesis and C metabolism was responsible for the grain yield loss in winter wheat under low temperature in combination with severe drought or waterlogging stress. In addition, prior mild drought or waterlogging contributed to the homeostasis of oxidative metabolism and relatively better photosynthesis, and hence to less grain yield loss under later spring low temperature stress.

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