Stress combination: When two negatives may become antagonistic, synergistic or additive for plants?

Nadeem, Hera; Khan, Amir; GUPTA, Rishil; Hashem, Mohamed; Alamri, Saad; Siddiqui, Mansoor A.; Ahmad, Faheem

doi:10.1016/j.pedsph.2022.06.031

Cited by 7 publications

(8 citation statements)

References 127 publications

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“…Abiotic stress factors (e.g., heat and drought) frequently overlap with biotic factors in the natural environment, and they exhibit high crosstalk and can act synergistically or antagonistically, making the effect of isolated stress in natural habitats difficult to track within the entire “stress matrix” [ 9 , 11 , 17 ]. Simultaneous co-occurrence of various abiotic and biotic stress factors in the natural environment during plant growth leads to the co-activation of multiple pathways, regulatory networks, and cellular compartments, which can have both synergistic and antagonistic effects on the resulting plant response at various levels, including transcriptomic, metabolic, and enzymatic activities.…”

Section: Introductionmentioning

confidence: 99%

“…Simultaneous co-occurrence of various abiotic and biotic stress factors in the natural environment during plant growth leads to the co-activation of multiple pathways, regulatory networks, and cellular compartments, which can have both synergistic and antagonistic effects on the resulting plant response at various levels, including transcriptomic, metabolic, and enzymatic activities. Therefore, stress tolerance in plants is a rather complex phenomenon, and plant response to a combination of stresses is a rather unique response at different levels of study (physiological, molecular, and metabolic) and cannot be extrapolated as the sum of plant responses to each stress applied individually [ 11 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Ectomycorrhizal Fungi Modulate Pedunculate Oak’s Heat Stress Responses through the Alternation of Polyamines, Phenolics, and Osmotica Content

Kebert

Kostić

Čapelja

et al. 2022

Plants

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The physiological and biochemical responses of pedunculate oaks (Quercus robur L.) to heat stress (HS) and mycorrhization (individually as well in combination) were estimated. One-year-old Q. robur seedlings were grown under controlled conditions in a pot experiment, inoculated with a commercial inoculum of ectomycorrhizal (ECM) fungi, and subjected to 72 h of heat stress (40 °C/30 °C day/night temperature, relative humidity 80%, photoperiod 16/8 h) in a climate chamber, and they were compared with seedlings that were grown at room temperature (RT). An in-depth analysis of certain well-known stress-related metrics such as proline, total phenolics, FRAP, ABTS, non-protein thiols, and lipid peroxidation revealed that mycorrhized oak seedlings were more resistant to heat stress (HS) than non-mycorrhized oaks. Additionally, levels of specific polyamines, total phenolics, flavonoids, and condensed tannins as well as osmotica (proline and glycine betaine) content were measured and compared between four treatments: plants inoculated with ectomycorrhizal fungi exposed to heat stress (ECM-HS) and those grown only at RT (ECM-RT) versus non-mycorrhized controls exposed to heat stress (NM-HS) and those grown only at room temperature (NM-RT). In ectomycorrhiza inoculated oak seedlings, heat stress led to not only a rise in proline, total phenols, FRAP, ABTS, non-protein thiols, and lipid peroxidation but a notable decrease in glycine betaine and flavonoids. Amounts of three main polyamines (putrescine, spermine, and spermidine) were quantified by using high-performance liquid chromatography coupled with fluorescent detection (HPLC/FLD) after derivatization with dansyl-chloride. Heat stress significantly increased putrescine levels in non-mycorrhized oak seedlings but had no effect on spermidine or spermine levels, whereas heat stress significantly increased all inspected polyamine levels in oak seedlings inoculated with ectomycorrhizal inoculum. Spermidine (SPD) and spermine (SPM) contents were significantly higher in ECM-inoculated plants during heat stress (approximately 940 and 630 nmol g−1 DW, respectively), whereas these compounds were present in smaller amounts in non-mycorrhized oak seedlings (between 510 and 550 nmol g−1 DW for Spd and between 350 and 450 nmol g−1 DW for Spm). These findings supported the priming and biofertilizer roles of ectomycorrhizal fungi in the mitigation of heat stress in pedunculate oaks by modification of polyamines, phenolics, and osmotica content.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ectomycorrhizal Fungi Modulate Pedunculate Oak’s Heat Stress Responses through the Alternation of Polyamines, Phenolics, and Osmotica Content

Kebert

Kostić

Čapelja

et al. 2022

Plants

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“…While soil salinity leads to an increase in sodium ion uptake, limiting the uptake of essential nutrients and toxic for cells, heat destroys cell membranes through the denaturation of enzymes and other compounds. These two highly damaging processes have antagonistic activity due to the key role of membranes in nutrient uptake and translocation within the plant, leading to a negative impact of the stress combination ( Nadeem et al., 2022 ). The interaction of most processes under the combination of heat and salinity is still largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Heat and salinity stress on the African eggplant F1 Djamba, a Kumba cultivar

David-Rogeat,

Broadley,

Stavridou

2024

Front. Plant Sci.

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Climate change is expected to increase soil salinity and heat-wave intensity, duration, and frequency. These stresses, often present in combination, threaten food security as most common crops do not tolerate them. The African eggplant (Solanum aethiopicum L.) is a nutritious traditional crop found in sub-Saharan Africa and adapted to local environments. Its wider use is, however, hindered by the lack of research on its tolerance. This project aimed to describe the effects of salinity (100 mM NaCl solution) combined with elevated temperatures (27/21°C, 37/31°C, and 42/36°C). High temperatures reduced leaf biomass while cell membrane stability was reduced by salinity. Chlorophyll levels were boosted by salinity only at the start of the stress with only the different temperatures significantly impacted the levels at the end of the experiment. Other fluorescence parameters such as maximum quantum yield and non-photochemical quenching were only affected by the temperature change. Total antioxidants were unchanged by either stress despite a decrease of phenols at the highest temperature. Leaf sodium concentration was highly increased by salinity but phosphorus and calcium were unchanged by this stress. These findings shed new light on the tolerance mechanisms of the African eggplant under salinity and heat. Further research on later developmental stages is needed to understand its potential in the field in areas affected by these abiotic stresses.

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“…Abiotic stresses rarely occur in a fully isolated manner. Co-occurring abiotic stresses often cause distinct effects on plants and elicit different acclimation responses, compared to individual stresses (Choudhury et al, 2017;Zhang & Sonnewald, 2017;Nadeem et al, 2022;. For example, in wheat (Triticum aestivum), episodes of prolonged drought in combination with heat waves exacerbate biomass reduction and loss of grain yield, when compared to individually applied drought or heat (Pradhan et al, 2012;Perdomo et al, 2015;Tricker et al, 2018).…”

Section: Abiotic Stresses Can Occur Simultaneously or Sequentiallymentioning

confidence: 99%

“…Despite the typical reduction in growth and yield caused by combinatorial stresses (Jumrani & Bhatia, 2018;Cohen et al, 2021;Sareen et al, 2023), plants are not passive and have evolved a series of adaptive responses at the morpho-physiological level to counteract these unfavorable stress conditions (Nadeem et al, 2022;Zhang et al, 2022a). The exact nature of the morphological and physiological responses to a given combinatorial stress condition can differ from those elicited by the corresponding individual stressors, as plants perceive the stress combination as a new state of stress (Pandey et al, 2015).…”

Section: Mechanisms Of Acclimation To Combinatorial Abiotic Stressesmentioning

confidence: 99%

Deciphering acclimation strategies to combined abiotic stresses in Arabidopsis thaliana

Jiang

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Plants grown in natural or agricultural environments are frequently exposed to abiotic stress and their combinations. Research on plant stress resilience usually focusses on single environmental stressors mostly imposed at a lethal severity. However, plant responses to sublethal abiotic stress combinations are often distinct from either stress applied in isolation. Investigating acclimation strategies mediating relevant stress combinations is therefore essential. In this thesis we studied the morphological, physiological, and molecular mechanisms underlying the acclimation responses of the model plant Arabidopsis thaliana to combined or sequential abiotic stresses. We focused on i) combined high temperature and drought and ii) flooding followed by drought, both of which are relevant in natural and agricultural settings and have already - and will further - increase in frequency due to climate change. We uncovered the unique phenotypic and molecular signatures of plant responses to combinatorial stresses in comparison with the corresponding single stresses and identified key molecular processes and putative candidate regulators mediating the acclimation responses. These putative regulators were further validated for their functions in plant growth, development, and physiology under combined or sequential stresses. Additionally, we described a novel role for the transcription factor GOLDEN2-LIKE 2 in thermomorphogenesis. The results presented in this thesis provide a comprehensive understanding of plant acclimation mechanisms to complex environmental challenges, which can potentially contribute to the development of climate change-resilient field crops.

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Stress combination: When two negatives may become antagonistic, synergistic or additive for plants?

Cited by 7 publications

References 127 publications

Ectomycorrhizal Fungi Modulate Pedunculate Oak’s Heat Stress Responses through the Alternation of Polyamines, Phenolics, and Osmotica Content

Ectomycorrhizal Fungi Modulate Pedunculate Oak’s Heat Stress Responses through the Alternation of Polyamines, Phenolics, and Osmotica Content

Heat and salinity stress on the African eggplant F1 Djamba, a Kumba cultivar

Deciphering acclimation strategies to combined abiotic stresses in Arabidopsis thaliana

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