Effect of putrescine application on some growth, biochemical and anatomical characteristics of Thymus vulgaris L. under drought stress

Elbar, Ola H. Abd; Farag, Reham; Shehata, S. A.

doi:10.1016/j.aoas.2019.10.001

Cited by 53 publications

(32 citation statements)

References 30 publications

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“…As can be observed in Table 1 and Table 2 , leaf chlorophyll content in absence of putrescine decreased from 101.11 to 126.55 mg 100 g −1 FW in younger leaves and from 63.93 to 98.74 mg 100 g −1 FW in outer leaves. Some authors have reported that the reduction of chlorophyll content as consequence of heat stress can be due to either the inhibition of photosynthetic pigment biosynthesis due to oxidative damage generated in thylakoids in plants exposed to high temperature (42 °C), or the chloroplast breakdown as a result of the increased synthesis of reactive oxygen species [ 32 , 33 , 34 ]. It is known that cauliflower, in order to defend against any kind of stress, use glucosinolates, which are very good antioxidant compounds.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, Harding et al [ 40 ] indicated that the senescence of the leaves can be accelerated due to the decomposition of the thylakoid components. Thus, due to the fact that the exogenous application of putrescine can protect the structure of the thylakoid membranes, as shown by the accumulations of not only phenolic compounds but also in the increase in chlorophyll concentrations, some studies have established a relationship between the application of exogenous putrescine and a slowing down of senescence [ 17 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

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Effects of Different Nitrogen Forms and Exogenous Application of Putrescine on Heat Stress of Cauliflower: Photosynthetic Gas Exchange, Mineral Concentration and Lipid Peroxidation

Collado‐González

Piñero

Otálora

et al. 2021

Plants

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This study examines the effect of the exogenous application of polyamine putrescine together with the application of different ratios of nitrate/ammonium (NO3−/NH4+), on the physiology of cauliflower subjected to heat stress. The 50:50 NO3−/NH4+ ratio was the best ratio against heat stress. As a result of the joint application of these compounds, a higher photosynthetic rate, a higher accumulation of both photosynthesis-related compounds and pigments, total proteins, and a change in the status of nutrients were obtained. Particularly, the decrease in content of calcium, chloride and sulphate in plants under heat stress is ameliorated by the ammonium effect. Additionally, it is important to highlight that cauliflower waste contains a higher content of mineral nutrients than floret cauliflower. These effects were more marked in young leaves. Furthermore, a synergistic effect for coping with heat stress between the polyamine and the nutritional treatment was observed. For this, both the application of putrescine and the feeding of plants with a 50:50 NO3−/NH4+ ratio before heat stress is proposed for the first time as an agricultural practice for increasing the thermotolerance of cauliflower cv Moonshine. On the other hand, due to the lower lipid peroxidation rate obtained in cauliflower leaves, these plants could be used for health purposes as ointments or other nutraceutical products, making the cultivation of this kind of cruciferous more sustainable.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects of Different Nitrogen Forms and Exogenous Application of Putrescine on Heat Stress of Cauliflower: Photosynthetic Gas Exchange, Mineral Concentration and Lipid Peroxidation

Collado‐González

Piñero

Otálora

et al. 2021

Plants

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“…Put has various functions in all living organisms, and its positive influence under several abiotic stress has been well documented, but their exact nature of work on the plant under stress is still under debate [ 4 , 40 , 42 , 43 ]. It has been suggested that Put may be involved in several hormonal pathways, scavenging ROS, and adjust osmotic balance [ 44 , 45 , 46 ].…”

Section: Resultsmentioning

confidence: 99%

Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts

Islam

Ryu

Azad

et al. 2021

Plants

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The effect of exogenously applied putrescine (Put) on salt stress tolerance was investigated in Panax ginseng. Thirty-day-old ginseng sprouts were grown in salinized nutrient solution (150 mM NaCl) for five days, while the control sprouts were grown in nutrients solution. Putrescine (0.3, 0.6, and 0.9 mM) was sprayed on the plants once at the onset of salinity treatment, whereas control plants were sprayed with water only. Ginseng seedlings tested under salinity exhibited reduced plant growth and biomass production, which was directly interlinked with reduced chlorophyll and chlorophyll fluorescence due to higher reactive oxygen species (hydrogen peroxide; H2O2) and lipid peroxidation (malondialdehyde; MDA) production. Application of Put enhanced accumulation of proline, total soluble carbohydrate, total soluble sugar and total soluble protein. At the same time, activities of antioxidant enzymes like superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase in leaves, stems, and roots of ginseng seedlings were increased. Such modulation of physio-biochemical processes reduced the level of H2O2 and MDA, which indicates a successful adaptation of ginseng seedlings to salinity stress. Moreover, protopanaxadiol (PPD) ginsenosides enhanced by both salinity stress and exogenous Put treatment. On the other hand, protopanaxatriol (PPT) ginsenosides enhanced in roots and reduced in leaves and stems under salinity stress condition. In contrast, they enhanced by exogenous Put application in all parts of the plants for most cases, also evidenced by principal component analysis. Collectively, our findings provide an important prospect for the use of Put in modulating salinity tolerance and ginsenosides content in ginseng sprouts.

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“…Foliar treatment with Put in common thyme plants ( Thymus vulgaris L.) improved growth and oil yield under water stress ( Abd Elbar et al, 2019 ). Furthermore, it showed protection against drought in wheat ( Arslan et al, 2019 ) and lettuce ( Zhu et al, 2019 ).…”

Section: Amino Acids and Other N -Containing Compomentioning

confidence: 99%

Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview

et al. 2020

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Biostimulants (BSs) are probably one of the most promising alternatives nowadays to cope with yield losses caused by plant stress, which are intensified by climate change. Biostimulants comprise many different compounds with positive effects on plants, excluding pesticides and chemical fertilisers. Usually mixtures such as lixiviates from proteins or algal extracts have been used, but currently companies are interested in more specific compounds that are capable of increasing tolerance against abiotic stress. Individual application of a pure active compound offers researchers the opportunity to better standarise formulations, learn more about the plant defence process itself and assist the agrochemical industry in the development of new products. This review attempts to summarise the state of the art regarding various families of organic compounds and their mode/mechanism of action as BSs, and how they can help maximise agricultural yields under stress conditions aggravated by climate change.

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Effect of putrescine application on some growth, biochemical and anatomical characteristics of Thymus vulgaris L. under drought stress

Cited by 53 publications

References 30 publications

Effects of Different Nitrogen Forms and Exogenous Application of Putrescine on Heat Stress of Cauliflower: Photosynthetic Gas Exchange, Mineral Concentration and Lipid Peroxidation

Effects of Different Nitrogen Forms and Exogenous Application of Putrescine on Heat Stress of Cauliflower: Photosynthetic Gas Exchange, Mineral Concentration and Lipid Peroxidation

Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts

Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview

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