scholarly journals Synergism and antagonism in plant acclimation to abiotic stress combinations

2021 ◽  
Keyword(s):  
Abiotic Stress ◽  
Plant Acclimation ◽  
Synergism And Antagonism ◽  
Stress Combinations

Cysteine and Hydrogen Sulfide: A Complementary Association for Plant Acclimation to Abiotic Stress

2021 ◽  
pp. 187-214
Author(s):  
M. Nasir Khan ◽  
Manzer H. Siddiqui ◽  
Mazen A. AlSolami ◽  
Riyadh A. Basahi ◽  
Zahid H. Siddiqui ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Abiotic Stress ◽  
Plant Acclimation

scholarly journals Abiotic stress, stress combinations and crop improvement potential

2017 ◽  
Vol 90 (5) ◽  
pp. 837-838 ◽  
Author(s):  
Olivier Loudet ◽  
Paul Michael Hasegawa
Keyword(s):  
Abiotic Stress ◽  
Crop Improvement ◽  
Improvement Potential ◽  
Stress Combinations

scholarly journals Systemic signaling during abiotic stress combination in plants

2020 ◽  
Vol 117 (24) ◽  
pp. 13810-13820 ◽  
Author(s):  
Sara I. Zandalinas ◽  
Yosef Fichman ◽  
Amith R. Devireddy ◽  
Soham Sengupta ◽  
Rajeev K. Azad ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Abiotic Stresses ◽  
Systemic Response ◽  
Single Leaf ◽  
Systemic Signaling ◽  
Whole Plant ◽  
Significant Difference ◽  
Plant Acclimation ◽  
Shed Light ◽  
Systemic Signals

Extreme environmental conditions, such as heat, salinity, and decreased water availability, can have a devastating impact on plant growth and productivity, potentially resulting in the collapse of entire ecosystems. Stress-induced systemic signaling and systemic acquired acclimation play canonical roles in plant survival during episodes of environmental stress. Recent studies revealed that in response to a single abiotic stress, applied to a single leaf, plants mount a comprehensive stress-specific systemic response that includes the accumulation of many different stress-specific transcripts and metabolites, as well as a coordinated stress-specific whole-plant stomatal response. However, in nature plants are routinely subjected to a combination of two or more different abiotic stresses, each potentially triggering its own stress-specific systemic response, highlighting a new fundamental question in plant biology: are plants capable of integrating two different systemic signals simultaneously generated during conditions of stress combination? Here we show that plants can integrate two different systemic signals simultaneously generated during stress combination, and that the manner in which plants sense the different stresses that trigger these signals (i.e., at the same or different parts of the plant) makes a significant difference in how fast and efficient they induce systemic reactive oxygen species (ROS) signals; transcriptomic, hormonal, and stomatal responses; as well as plant acclimation. Our results shed light on how plants acclimate to their environment and survive a combination of different abiotic stresses. In addition, they highlight a key role for systemic ROS signals in coordinating the response of different leaves to stress.

scholarly journals Differential Physio-Biochemical and Metabolic Responses of Peanut (Arachis hypogaea L.) under Multiple Abiotic Stress Conditions

2022 ◽  
Vol 23 (2) ◽  
pp. 660
Author(s):  
Jaykumar Patel ◽  
Deepesh Khandwal ◽  
Babita Choudhary ◽  
Dolly Ardeshana ◽  
Rajesh Kumar Jha ◽  
...  
Keyword(s):  
Climate Change ◽  
Amino Acids ◽  
Abiotic Stress ◽  
Amino Acid ◽  
Arachis Hypogaea ◽  
Abiotic Stresses ◽  
Free Amino ◽  
Combined Stresses ◽  
Arachis Hypogaea L ◽  
Stress Combinations

The frequency and severity of extreme climatic conditions such as drought, salinity, cold, and heat are increasing due to climate change. Moreover, in the field, plants are affected by multiple abiotic stresses simultaneously or sequentially. Thus, it is imperative to compare the effects of stress combinations on crop plants relative to individual stresses. This study investigated the differential regulation of physio-biochemical and metabolomics parameters in peanut (Arachis hypogaea L.) under individual (salt, drought, cold, and heat) and combined stress treatments using multivariate correlation analysis. The results showed that combined heat, salt, and drought stress compounds the stress effect of individual stresses. Combined stresses that included heat had the highest electrolyte leakage and lowest relative water content. Lipid peroxidation and chlorophyll contents did not significantly change under combined stresses. Biochemical parameters, such as free amino acids, polyphenol, starch, and sugars, significantly changed under combined stresses compared to individual stresses. Free amino acids increased under combined stresses that included heat; starch, sugars, and polyphenols increased under combined stresses that included drought; proline concentration increased under combined stresses that included salt. Metabolomics data that were obtained under different individual and combined stresses can be used to identify molecular phenotypes that are involved in the acclimation response of plants under changing abiotic stress conditions. Peanut metabolomics identified 160 metabolites, including amino acids, sugars, sugar alcohols, organic acids, fatty acids, sugar acids, and other organic compounds. Pathway enrichment analysis revealed that abiotic stresses significantly affected amino acid, amino sugar, and sugar metabolism. The stress treatments affected the metabolites that were associated with the tricarboxylic acid (TCA) and urea cycles and associated amino acid biosynthesis pathway intermediates. Principal component analysis (PCA), partial least squares-discriminant analysis (PLS-DA), and heatmap analysis identified potential marker metabolites (pinitol, malic acid, and xylopyranose) that were associated with abiotic stress combinations, which could be used in breeding efforts to develop peanut cultivars that are resilient to climate change. The study will also facilitate researchers to explore different stress indicators to identify resistant cultivars for future crop improvement programs.

Abiotic stress combinations improve the phenolics profiles and activities of extractable and bound antioxidants from germinated spelt (Triticum spelta L.) seeds

2020 ◽  
pp. 128704
Author(s):  
Marjeta Mencin ◽  
Helena Abramovič ◽  
Polona Jamnik ◽  
Maja Mikulič Petkovšek ◽  
Robert Veberič ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Triticum Spelta ◽  
Stress Combinations

Calcium-Dependent Protein Kinases (CDPK) in Abiotic Stress Tolerance

2018 ◽  
Vol 34 (2) ◽  
pp. 259-265 ◽  
Author(s):  
Hemant B Kardile ◽  
◽  
Vikrant ◽  
Nirmal Kant Sharma ◽  
Ankita Sharma ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Stress Tolerance ◽  
Protein Kinases ◽  
Abiotic Stress Tolerance ◽  
Calcium Dependent ◽  
Dependent Protein ◽  
Calcium Dependent Protein Kinases

Evaluation of germ plasm for resistant to Soybean mosaic virus (SMV)

2020 ◽  
Vol 21 (1) ◽  
pp. 6-9
Author(s):  
Wuye Ria Andayanie
Keyword(s):  
Abiotic Stress ◽  
Environmental Factors ◽  
Mosaic Virus ◽  
Polyclonal Antibody ◽  
Symptom Severity ◽  
Germ Plasm ◽  
Polyclonal Antibodies ◽  
Soybean Mosaic Virus ◽  
High Yield ◽  
High Yields

Soybean superior varieties with high yields and are resistant to abiotic stress have been largely released, although some varieties grown in the field are not resistant to SMV. In addition, the opportunity to obtain lines of hope as prospective varieties with high yield and resistance to SMV is very small. The method for evaluating soybean germplasm is based on serological observations of 98 accessions of leaf samples from SMV inoculation with T isolate. The evaluation results of 98 accessions based on visual observations showed 31 genotypes reacting very resistant or healthy to mild resistant category to SMV T isolate  with a percentage of symptom severity of 0 −30 %. Among 31 genotypes there are 2 genotypes (PI 200485; M8Grb 44; Mlg 3288) with the category of visually very resistant and resistant, respectively and  Mlg 3288  with the category of mild resistant.  They have a good agronomic appearance with a weight of 100 seeds (˃10 g) and react negatively with polyclonal antibodies to SMV, except Mlg 3288 reaction is not consistent, despite the weight of 100 seeds (˃ 10 g). Leaf samples from 98 accessions revealed various symptoms of SMV infection in the field. This diversity of symptoms is caused by susceptibility to accession, when infection occurs, and environmental factors. Keywords—: soybean; genotipe; Soybean mosaic virus (SMV); disease severity; polyclonal  antibody

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