scholarly journals Strawberry physiological and biochemical responses to chilling and freezing stress and application of alleviating factors as countermeasures

2020 ◽  
Author(s):  
P. A. Roussos ◽  
E. Ntanos ◽  
A. Tsafouros ◽  
N.-K. Denaxa
Keyword(s):  
Freezing Stress ◽  
Biochemical Responses ◽  
Physiological And Biochemical

The Physiological and Biochemical Responses of Eastern Purple Coneflower to Freezing Stress

2015 ◽  
Vol 62 (4) ◽  
pp. 551-559
Author(s):  
S. Asadi-Sanam ◽  
H. Pirdashti ◽  
A. Hashempour ◽  
M. Zavareh ◽  
G. A. Nematzadeh ◽  
...  
Keyword(s):  
Freezing Stress ◽  
Biochemical Responses ◽  
Purple Coneflower ◽  
Physiological And Biochemical

scholarly journals Physiological and biochemical responses of strawberry crown and leaf tissues to freezing stress

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Elnaz Zareei ◽  
Farhad Karami ◽  
Mansour Gholami ◽  
Ahmad Ershadi ◽  
Saber Avestan ◽  
...  
Keyword(s):  
Rapid Assessment ◽  
Thiobarbituric Acid ◽  
Freezing Temperature ◽  
Freezing Stress ◽  
Freezing Injury ◽  
Northern Iran ◽  
Biochemical Responses ◽  
Leaf Tissues ◽  
Physiological And Biochemical ◽  
Strawberry Cultivars

Abstract Background In northern Iran and other cold regions, winter freezing injury and resultant yield instability are major limitations to strawberry production. However, there is scarcity of information on the physiological and biochemical responses of strawberry cultivars to freezing stress. This study aimed to investigate the physiological and biochemical responses of strawberry cultivars (Tennessee Beauty, Blakemore, Kurdistan, Queen Elisa, Chandler, Krasnyy Bereg, and Yalova) to different freezing temperature treatments (− 5, − 10, − 15, − 20, and − 25 °C) under controlled conditions. Results All measured physiological and biochemical features were significantly affected by the interaction effect between low temperatures and cultivars. Tennessee Beauty showed the highest RWC at − 25 °C. The highest Fv/Fm was observed in Queen Elisa. Krasnyy Bereg had the least freezing injury (FI) in crown and leaf, while Yalova and Chandler showed the highest crown and leaf FI, respectively. At − 20 to − 25 °C, the highest carbohydrates contents of crown and leaf were noted in Blakemore and Krasnyy Bereg cultivars, respectively. The Yalova showed the highest protein content in both crown and leaf tissues at − 25 °C. The Tennessee Beauty and Blackmore cultivars showed the highest proline in crowns and leaves at − 15 °C, respectively. The highest ThioBarbituric Acid Reactive Substances (TBARS) contents in the crown and leaf were observed in Kurdistan and Queen Elisa, respectively. Queen Elisa and Krasnyy Bereg cultivars showed SOD and POD peaks in the crown at − 15 °C, respectively. Conclusion Freezing stress was characterized by decreased Fv/Fm and RWC, and increased FI, TBARS, total carbohydrates, total proteins, proline content, and antioxidant enzyme activity. The extent of changes in above mentioned traits was cultivar dependent. FI and TBARS were the best traits among destructive parameters for evaluating freezing tolerance. Moreover, maximum quantum yield of PSII (Fv/Fm index), as non-destructive parameters, showed a significant efficiency in rapid assessment for screening of freezing tolerant strawberry cultivars. The cultivars Krasnyy Bereg, Queen Elisa, and Kurdistan were the most tolerant cultivars to freezing stress. These cultivars can be used as parents in breeding programs to develop new freezing tolerant cultivars.

The physiological and biochemical responses of eastern purple coneflower to freezing stress

2015 ◽  
Vol 62 (4) ◽  
pp. 515-523 ◽  
Author(s):  
S. Asadi-Sanam ◽  
H. Pirdashti ◽  
A. Hashempour ◽  
M. Zavareh ◽  
G. A. Nematzadeh ◽  
...  
Keyword(s):  
Freezing Stress ◽  
Biochemical Responses ◽  
Purple Coneflower ◽  
Physiological And Biochemical

Physiological and biochemical responses of harvested rambutan (Nephelium lappaceum L.) fruits to postharvest dip treatments during storage

2018 ◽  
Vol 19 (1&2) ◽  
pp. 217-222
Author(s):  
Manjunath J. Shetty ◽  
◽  
P.R. Geethalekshmi ◽  
C. Mini ◽  
Vijayaraghava Kumar ◽  
...  
Keyword(s):  
Biochemical Responses ◽  
Nephelium Lappaceum ◽  
Physiological And Biochemical

Morphological, Physiological and Biochemical Responses of Poplar Plants to Drought Stress

2018 ◽  
Vol 5 (03) ◽  
Author(s):  
ARADHNA KUMARI ◽  
IM KHAN ◽  
ANIL KUMAR SINGH ◽  
SANTOSH KUMAR SINGH
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Biochemical Parameters ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Field Capacity ◽  
Drought Event ◽  
Total Biomass ◽  
Biochemical Responses ◽  
Physiological And Biochemical

Poplar clone Kranti was selected to assess the morphological, physiological and biochemical responses under drought at different levels of water stress, as it is a common clone used to be grown in Uttarakhand for making paper and plywood. The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity) and changes in physiological and biochemical parameters related with drought tolerance were recorded. Alterations in physiological (i.e. decrease in relative water content) and biochemical parameters (i.e. increase in proline and soluble sugar content and build-up of malondialdehyde by-products) occurred in all the three levels of water stress, although drought represented the major determinant. Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC). Biochemical parameters like proline, soluble sugar and MDA content increased with severity and duration of stress, which helped plants to survive under severe stress. It was analyzed that for better wood yield poplar seedlings should avail either optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacity up to seedling establishment period (60 days). Furthermore, this study manifested that acclimation to drought stress is related with the rapidity, severity, and duration of the drought event of the poplar species.

scholarly journals Assessment of Morpho-Physiological and Biochemical Responses of Mercury-Stressed Trigonella foenum-gracum L. to Silver Nanoparticles and Sphingobacterium ginsenosidiumtans Applications

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1349
Author(s):  
Ahlam Khalofah ◽  
Mona Kilany ◽  
Hussein Migdadi
Keyword(s):  
Heavy Metals ◽  
Hydrogen Peroxide ◽  
Photosynthetic Pigments ◽  
Ag Nanoparticles ◽  
Thymus Vulgaris ◽  
Total Phenols ◽  
Biochemical Responses ◽  
Mercury Stress ◽  
Relative Water ◽  
Physiological And Biochemical

Heavy metals are primarily generated and deposited in the environment, causing phytotoxicity. This work evaluated fenugreek plants’ morpho-physiological and biochemical responses under mercury stress conditions toward Ag nanoparticles and Sphingobacterium ginsenosidiumtans applications. The fabrication of Ag nanoparticles by Thymus vulgaris was monitored and described by UV/Vis analysis, FTIR, and SEM. The effect of mercury on vegetative growth was determined by measuring the root and shoots length, the number and area of leaves, the relative water content, and the weight of the green and dried plants; appraisal of photosynthetic pigments, proline, hydrogen peroxide, and total phenols content were also performed. In addition, the manipulation of Ag nanoparticles, S. ginsenosidiumtans, and their combination were tested for mercury stress. Here, Ag nanoparticles were formed at 420 nm with a uniform cuboid form and size of 85 nm. Interestingly, the gradual suppression of vegetal growth and photosynthetic pigments by mercury, Ag nanoparticles, and S. ginsenosidiumtans were detected; however, carotenoids and anthocyanins were significantly increased. In addition, proline, hydrogen peroxide, and total phenols content were significantly increased because mercury and S. ginsenosidiumtans enhance this increase. Ag nanoparticles achieve higher levels by the combination. Thus, S. ginsenosidiumtans and Ag nanoparticles could have the plausible ability to relieve and combat mercury’s dangerous effects in fenugreek.

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