Figure 3 - uploaded by Victoria Vladimirovna Roshchina
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The staining of vegetative microspores of Equisetum arvense (bar = 20 m) (bar = 100 m), with glyoxylic acid and o-phthalic aldehyde. Excitation of emission by UV-light (360-405 nm) of luminescent microscope Leica DM 6000B. Blue fluorescence or yellow
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Occurrence of biogenic amines known animal neurotransmitters—catecholamines and histamine—in plant cells and their influence on growth and development play a significant role in plant life. The compounds such as dopamine and histamine may occur in some species at norma, but often appear at stress. They are accumulated under various stress factors,...
Citations
... It can also interact with plant hormones and affect the growth and development of plants (Wang et al. 2021). Both biotic and abiotic stresses have considerable impacts on the production of dopamine in plants (Roshchina 2022). Li et al. (2015) indicated that 200 mM, NaCl reduced plant growth, the photosynthetic rate and the maximum quantum yield of PSII in the dark (F v /F m ) of salt-stressed Malus hupehensis Rehd. ...
The objective of this study is to evaluate the role of dopamine hydrochloride (DH) in alleviating the detrimental effects of salt stress on Glycine max (L.) plant. Soybean seeds were treated with 150 mM NaCl and DH (100 µM or 200 µM) after they had been grown in plastic pots then the growth parameters, physiological and molecular analyses were assessed. Data showed that salinity stress decreased the germination percentage by 63.6%, the tolerance index (TI) and the seedling vigor index (SVI) were highly decreased. Salinity stress led to a markedly decline in the photosynthetic efficiency and the content of chlorophyll a and chlorophyll b by 43.5%, 77.4% and 44.6%, respectively. Salinity stress increased MDA and activity of CAT, SOD, POD, APX, GST and GR by 150%, 39.8%, 75%, 160%, 77.7%, 50% and 57%, respectively. However, DH (100 µM or 200 µM) significantly alleviated the toxic effects of salinity stress, marinated ions absorption, and enhanced the molecular level. Wherein out of 30 ISSR amplified fragments were formed. There were 10 unique bands (587 bp, 453 bp, 393 bp, 435 bp, 157 bp, 679 bp, 473 bp, 675 bp, 758 bp and 531 bp) were appeared in response to DH (100 µM and 200 µM) compared with untreated plants. Our analysis suggests a constructive effect of DH (100 µM and 200 µM) in alleviating the toxic effects of salinity stress on Glycine max (L.) plant not only at the level of antioxidative defense but also by regulating the molecular response highlighting the potential use of DH to improve the sustainability of horticultural production under climate change.
... although the roles of dopamine in animals as a neurotransmitter regulating metabolism, hormone secretion, and control of movement, reward, and addiction processes are widely studied, its roles in plant tissues are largely unknown (howe & Dombeck, 2016). Dopamine takes role in various plant physiological processes, including indole acetic acid (Iaa) metabolism, photosynthesis, flowering, herbivory defense and nitrogen fixation (Roshchina, 2022). Recognition of the stress-mitigating effects of dopamine is a promising new field of study. ...
... Dopamine and its oxidation product melanin also show strong antioxidant capacities similar to those of ascorbic acid or catechin and play a direct role in the scavenging of reactive oxygen species (Gomes et al., 2014). In the presence of reactive oxygen species inside or outside of the cell, dopamine is transformed into red pigment dopachrome to mark the location of stress, which finally oxidized into black pigment melanin (Roshchina, 2022). ...
... application of bioregulator substances on plant tissues or as a soil amendment is a promising agricultural practice. Progesterone, being a sterol is capable of entering lipid bilayer and restore membrane integrity, whereas dopamine possesses strong antioxidative properties, which directly involve in ROS scavenging (Janeczko et al., 2019;Roshchina, 2022). although recently the role of both neurotransmitters under abiotic stresses received increased research attention, to our knowledge none of these studies investigated the responses of tomato plants. ...
Drought and salt stress are the most common abiotic stresses resulting in yield reduction or complete loss of agricultural production in recent years. Stress mitigation by external biostimulator molecules has been an active research topic recently. Neurotransmitters (NTs) dopamine and progesterone, found in both animal and plant kingdom were shown to take role in plant abiotic and biotic stress defense in limited number of studies. This study investigated the effects of exogenous dopamine and progesterone application in tomato seedlings under drought and salt stress by examining various morphological and physiological parameters (tissue length and weights, relative water content, ion leakage, malondialdehyde and proline levels), as well as expressions of various genes encoding enzymes; superoxide dismutase (FeSOD), catalase (CAT2), glutathione reductase (GR1), ascorbate peroxidase (APX1), 1-aminocyclopropane-1-carboxylic acid synthase (ACS2) and delta 1-pyrroline-5-carboxylate synthase (P5CS), that play a direct role in the antioxidative defense system or measured as stress indicators. The results showed that dopamine and progesterone alleviated drought stress mainly by increasing superoxide dismutase and catalase antioxidative enzyme gene expressions and decreasing ethylene production in tomato seedlings, thereby improving cell membrane integrity and increasing root dry weight. Although morphological and physiological responses of the seedlings were mostly similar under drought and salinity stresses, antioxidative defense enzyme gene expressions were not upregulated under salinity stress, except for the GR1 expression under progesterone treatment.
... Specialized secretory surface cells (glands, hairs, etc.) can also secrete biogenic amines, since they contain enzymes that regulate their content, as well as antineurotransmitters, substances that reduce the toxic effect of neurotransmitters or block receptors. In angiosperms, as shown for the ashy eucalyptus glands in Eucalyptus cinerea, biogenic amines can be excreted both by the entire leaf surface (dopamine) and by specialized secretory structures (histamine) of the surface [28]. Figure 3 shows a bright yellow emission, characteristic for high concentrations of dopamine [29] in the secretory glands of the medicinal plant sea buckthorn Hippophae rhamnoides after histo-chemical treatment with glyoxylic acid. ...
Spectral properties of the surface of plant cells at various evolutionary levels from unicellular (diatoms,
horsetail and fern spores) to multicellular (woody and herbaceous species) organisms have been studied. It
was shown that the surface layers of the cuticle and cell wall of a number of analyzed plants included antioxidants – blue pigments azulenes. Using histochemical methods, it was found that neurotransmitter compounds – biogenic amines – are present as excretions on the entire surface or specialized secretory structures of leaves. Under conditions of high salt concentration, dopamine and histamine are secreted, which is blocked by the addition of exogenous azulene and proazulene grosshemine. It is assumed that the azulene-containing surface protects cells from the formed reactive oxygen species and biogenic amines that are toxic at high concentrations.
... Specialized secretory surface cells (glands, hairs, etc.) can also secrete biogenic amines, since they contain enzymes that regulate their content, as well as antineurotransmitters, substances that reduce the toxic effect of neurotransmitters or block receptors. In angiosperms, as shown for the ashy eucalyptus glands in Eucalyptus cinerea, biogenic amines can be excreted both by the entire leaf surface (dopamine) and by specialized secretory structures (histamine) of the surface [28]. Figure 3 shows a bright yellow emission, characteristic for high concentrations of dopamine [29] in the secretory glands of the medicinal plant sea buckthorn Hippophae rhamnoides after histo-chemical treatment with glyoxylic acid. ...
Spectral properties of the surface of plant cells at various evolutionary levels from unicellular (diatoms, horsetail, and fern spores) to multicellular (woody and herbaceous species) organisms have been studied. It was shown that the surface layers of the cuticle and cell wall of a number of analyzed plants included antioxidants – blue pigments azulenes. Using histochemical methods, it was found that neurotransmitter compounds – biogenic amines – are present as excretions on the entire surface or specialized secretory structures of leaves. Under conditions of high salt concentration, dopamine and histamine are secreted, which is blocked by the addition of exogenous azulene and proazulene grosshemine. It is assumed that the azulene-containing surface protects cells from the formed reactive oxygen species and biogenic amines that are toxic at high concentrations.
... In biocenosis, neurotransmitters secreted by plants, animals, or microorganisms are exogenous signals. Chemical interactions, involving biogenic amines and acetylcholine, may play the important signaling role in the normalization and manifestation of stress [1,2]. Exogenous neurotransmitters may regulate the growth and development of not only highly organized multicellular plant organisms, but also unicellular ones, and thereby play a significant role in plant life. ...
Exogenous compounds known as neurotransmitters acetylcholine, dopamine, histamine and serotonin and their antagonists d-tubocurarine, muscarine, yohimbine, tavegyl and inmecarb were tested on unicellular diatom algae Ulnaria ulna, where they demonstrated signaling and regulatory functions. The most primitive single-cellular organisms like diatoms exhibit a marked sensitivity to neurotransmitters and their antagonists, indicating a possible reception mechanism, similar to those observed in mammals.
... Stress either abiotic or biotic has a significant impact on the biosynthesis of catecholamines in plants Gao et al., 2021;Liu et al., 2022;Mohammadi Azni et al., 2021;Roshchina, 2022). Different abiotic stressors, such as ultraviolet light, drought, salinity, low temperature, etc. differentially affect the activity of catecholamine biosynthetic enzymes in potato (Solanum tuberosum L.) (Swiedrych et al., 2004a,b). ...
Dopamine is a naturally occurring amine in plants and animals, having a strong antioxidative capacity. Different abiotic stressors, such as drought, salinity, and nutrient deficiency induce endogenous dopamine biosynthesis, while exogenous dopamine application confers tolerance to abiotic stress. Plants benefit from exogenous dopamine to promote photosynthetic pigment concentrations, stomatal conductance, CO2 assimilation, and maximal photochemical efficiency, leading to improved growth and biomass accumulation under stressful conditions. Crucially, dopamine can alleviate oxidative stress caused by abiotic stressors by strengthening the antioxidant defense that functions in the efficient removal of reactive oxygen species. Dopamine assists plants in essential nutrient acquisition under deficit nutrient supply, possibly by regulating various ion transporters. Moreover, a role for ethylene signaling has been proposed for dopamine-induced nitrogen (N) assimilation and utilization under low N stress. Dopamine seems to favorably activate xenobiotic detoxification pathways, leading to improved degradation of organic pollutants. In this review, we discussed the role of dopamine in plant tolerance to abiotic stressors such as drought, salt stress, chilling, nutrient deficiency, nitrate excess and organic pollutant stress based on the available literature on horticultural plants. Our analysis suggests that the beneficial effects of dopamine on abiotic stress tolerance in plants point to the possibility of using dopamine to increase the sustainability of horticultural production in the era of climate change.
