Crosstalk between abscisic acid and nitric oxide under heat stress: exploring new vantage points

Iqbal, Noushina; Umar, Shahid; Khan, Nafees A.; Corpas, Francisco J.

doi:10.1007/s00299-021-02695-4

Cited by 35 publications

(33 citation statements)

References 247 publications

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“…Nitric oxide and ABA are essential regulators for plants defense against stress. Iqbal et al [ 49 ] reviewed the interaction between ABA and NO for heat tolerance and explored various common mechanisms in their interaction. In the present work, we have studied the effect of NO and ABA in alleviating heat stress individually and in combination, also studied how they regulate each other through the use of NO and ABA inhibitors.…”

Section: Discussionmentioning

confidence: 99%

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Nitric Oxide and Abscisic Acid Mediate Heat Stress Tolerance through Regulation of Osmolytes and Antioxidants to Protect Photosynthesis and Growth in Wheat Plants

et al. 2022

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Nitric oxide (NO) and abscisic acid (ABA) play a significant role to combat abiotic stress. Application of 100 µM sodium nitroprusside (SNP, NO donor) or ABA alleviated heat stress effects on photosynthesis and growth of wheat (Triticum aestivum L.) plants exposed to 40 °C for 6 h every day for 15 days. We have shown that ABA and NO synergistically interact to reduce the heat stress effects on photosynthesis and growth via reducing the content of H2O2 and thiobarbituric acid reactive substances (TBARS), as well as maximizing osmolytes production and the activity and expression of antioxidant enzymes. The inhibition of NO and ABA using c-PTIO (2-4 carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) and fluridone (Flu), respectively, reduced the osmolyte and antioxidant metabolism and heat stress tolerance. The inhibition of NO significantly reduced the ABA-induced osmolytes and antioxidant metabolism, exhibiting that the function of ABA in the alleviation of heat stress was NO dependent and can be enhanced with NO supplementation.Thus, regulating the activity and expression of antioxidant enzymes together with osmolytes production could act as a possible strategy for heat tolerance.

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Section: Discussionmentioning

confidence: 99%

“…The interaction between NO and ABA under heat stress has been reviewed [ 49 ]. Nitric oxide triggers antioxidant gene expression or activates antioxidant enzymes through post-translational modifications for stress tolerance [ 50 ].…”

Section: Introductionmentioning

confidence: 99%

Nitric Oxide and Abscisic Acid Mediate Heat Stress Tolerance through Regulation of Osmolytes and Antioxidants to Protect Photosynthesis and Growth in Wheat Plants

et al. 2022

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“…Plant growth regulators are the multifunctional molecules involved in regulating the growth and development of plants, besides attributing the property of abiotic stress tolerance [9,26,27]. Of them, production of melatonin (N-acetyl-5-methoxytryptamine) is well established among the majority of monocotyledons and dicotyledons families [28,29].…”

Section: Melatonin As a Bio-stimulatory Moleculementioning

confidence: 99%

“…Environmental stressors, such as extreme temperatures, can cause severe damage to plants. High temperatures hinder plant growth and yield, and thus pose a threat to growth potential and food security [26,57,176,177]. Heat stress changes the stability of proteins and cause changes on the enzyme level, as well as biomolecules which are associated with the generation of ROS [27,78].…”

Section: Melatonin Under Temperature (High) Stressmentioning

confidence: 99%

Melatonin in Plant Defense against Abiotic Stress

Rehaman

Mishra

Ferdose

et al. 2021

Forests

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Abiotic stress adversely affects plant growth and metabolism and as such reduces plant productivity. Recognized as a major contributor in the production of reactive oxygen species (ROS), it hinders the growth of plants through induction of oxidative stress. Biostimulants such as melatonin have a multifunctional role, acting as a defense strategy in minimizing the effects of oxidative stress. Melatonin plays important role in plant processes ranging from seed germination to senescence, besides performing the function of a biostimulant in improving the plant’s productivity. In addition to its important role in the signaling cascade, melatonin acts as an antioxidant that helps in scavenging ROS, generated as part of different stresses among plants. The current study was undertaken to elaborate the synthesis and regulation of melatonin in plants, besides emphasizing its function under various abiotic stress namely, salt, temperature, herbicides, heavy metals, and drought. Additionally, a special consideration was put on the crosstalk of melatonin with phytohormones to overcome plant abiotic stress.

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“…Heat accumulation inside gangue dumps increases the surface soil temperature, which can reduce root numbers, roots' absorption of water and nutrients, and plant fresh weights [18]. High soil temperature is far more influential than high air temperature on plant growth [19]. At present, few studies have used remote sensing to monitor soil heat stress and have mainly focused on drought stress [20], waterlogging stress [21], high-temperature stress [22], disease stress, and heavy metal stress [23].…”

Section: Introductionmentioning

confidence: 99%

Simulating Heat Stress of Coal Gangue Spontaneous Combustion on Vegetation Using Alfalfa Leaf Water Content Spectral Features as Indicators

et al. 2021

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Vegetation heat-stress assessment in the reclamation areas of coal gangue dumps is of great significance in controlling spontaneous combustion; through a temperature gradient experiment, we collected leaf spectra and water content data on alfalfa. We then obtained the optimal spectral features of appropriate leaf water content indicators through time series analysis, correlation analysis, and Lasso regression analysis. A spectral feature-based long short-term memory (SF-LSTM) model is proposed to estimate alfalfa’s heat stress level; the live fuel moisture content (LFMC) varies significantly with time and has high regularity. Correlation analysis of the raw spectrum, first-derivative spectrum, spectral reflectance indices, and leaf water content data shows that LFMC and spectral data were the most strongly correlated. Combined with Lasso regression analysis, the optimal spectral features were the first-derivative spectral value at 1661 nm (abbreviated as FDS (1661)), RVI (1525,1771), DVI (1412,740), and NDVI (1447,1803). When the classification strategies were divided into three categories and the time sequence length of the spectral features was set to five consecutive monitoring dates, the SF-LSTM model had the highest accuracy in estimating the heat stress level in alfalfa; the results provide an important theoretical basis and technical support for vegetation heat-stress assessment in coal gangue dump reclamation areas.

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Crosstalk between abscisic acid and nitric oxide under heat stress: exploring new vantage points

Cited by 35 publications

References 247 publications

Nitric Oxide and Abscisic Acid Mediate Heat Stress Tolerance through Regulation of Osmolytes and Antioxidants to Protect Photosynthesis and Growth in Wheat Plants

Nitric Oxide and Abscisic Acid Mediate Heat Stress Tolerance through Regulation of Osmolytes and Antioxidants to Protect Photosynthesis and Growth in Wheat Plants

Melatonin in Plant Defense against Abiotic Stress

Simulating Heat Stress of Coal Gangue Spontaneous Combustion on Vegetation Using Alfalfa Leaf Water Content Spectral Features as Indicators

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