Understanding cross-tolerance mechanism and effect of drought priming on individual heat stress and combinatorial heat and drought stress in chickpea

Yadav, Renu; Juneja, Sumandeep; Kumar, Rashpal; Saini, Rashmi; Kumar, Sanjeev

doi:10.1007/s12892-022-00148-2

Cited by 3 publications

(2 citation statements)

References 56 publications

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“…During extreme temperatures, due to stomatal, mesophyll, and biochemical limitations, there is a reduction in net CO 2 assimilation, resulting in an excess of light energy absorbed by chloroplasts relative to photosynthesis capacity, electron leakage, and an increase in the formation of reactive oxygen species (ROS, e.g., singlet oxygen, superoxides, hydrogen peroxide, and hydroxyl radicals [ 106 , 107 , 108 ]). Heat stress impairs sugar and photorespiration metabolism, increases membrane lipid fluidity, and accelerates lipid peroxidation, resulting in increased production of ROS and, ultimately, irreversible oxidative stress [ 109 , 110 , 111 ]. It has been reported that the reduction in MDA is accompanied by decreasing ROS levels, indicating reduced lipid peroxidation and oxidative stress, and thus retention of membrane integrity, which contributes to stress tolerance [ 111 ].…”

Section: Discussionmentioning

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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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: Discussionmentioning

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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“…У дослідах з нутом 24-добові саджанці були піддані помірній посусі і дії трьох підвищених температур -38 °C, 35 і 32 °C упродовж 12, 24 і 36 годин відповідно, як окремо, так і у поєднанні з посухою [100]. Результати показали, що найсильніша відповідь спостерігалася за 35 °C порівняно з 32 і 38 °C щодо зменшення вмісту води в листках, збільшення витоку електроліту, перекисного окиснення ліпідів, зниження вмісту хлорофілу, збільшення накопичення проліну і загального вмісту цукрів, підвищення активності СОД, каталази, ГП, аскорбатпероксидази та ГР.…”

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Priming and cross-adaptation of plants to abiotic stresses: state of the problem and prospects

Kiriziy¹

2023

Fiziol. rast. genet.

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The review is devoted to the current state and prospects of research on the problem of plants priming and cross-adaptation to abiotic stress factors — mainly drought and high temperature. These studies are becoming increasingly relevant due to global climate change, as they reveal new approaches to increasing the crops resistance to stressors. The key link in this case is the formation of the so-called stress memory (priming) under the influence of moderate stress, which allows the plant to activate protective mechanisms faster and more effectively under the effect of the next harder stress of the same or a different nature (cross-adaptation) and thereby mitigate its impact compared to non-primed plants. In this regard, information on signaling systems that participate in the perception of a stress factor by a plant and trigger protective mechanisms through multi-cascade networks is considered. The results of experiments on priming plants with high temperature or drought at the beginning of the growing season to the action of these stressors at later development stages, as well as examples of cross-adaptation, when priming with drought increased thermotolerance and vice versa, are given. Possible mechanisms of stress memory formation and retention within one generation and its transference to subsequent generations (transgenerational stress memory) are briefly considered. At the same time, one of the unsolved problems remains the correctness of extrapolation results obtained in laboratory or controlled conditions to the practice of growing plants in the field. Certain side effects of priming should also be considered, as priming may cause some negative effects on plant physiology and productivity. Therefore, it is necessary to test whether the primed plants will perform as well as the control if the stress will not happen.

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Ascorbic acid imparts field tolerance to heat stress in chickpea under late sown condition

Choudhary,

Kumar,

Shubha

et al. 2024

South African Journal of Botany

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Understanding cross-tolerance mechanism and effect of drought priming on individual heat stress and combinatorial heat and drought stress in chickpea

Cited by 3 publications

References 56 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

Priming and cross-adaptation of plants to abiotic stresses: state of the problem and prospects

Ascorbic acid imparts field tolerance to heat stress in chickpea under late sown condition

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