Thallium-mediated NO signaling induced lipid accumulation in microalgae and its role in heavy metal bioremediation

Water Research, Год журнала: 2023, Номер 239, С. 120027 - 120027

Опубликована: Май 1, 2023

Язык: Английский

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The role of nitric oxide and hydrogen sulfide in regulation of redox homeostasis at extreme temperatures in plants

Frontiers in Plant Science, Год журнала: 2023, Номер 14

Опубликована: Фев. 7, 2023

Nitric oxide and hydrogen sulfide, as important signaling molecules (gasotransmitters), are involved in many functions of plant organism, including adaptation to stress factors various natures. As redox-active molecules, NO H 2 S redox regulation functional activity proteins. They also maintaining cell homeostasis due their ability interact directly indirectly (functionally) with ROS, thiols, other molecules. The review considers the involvement nitric sulfide responses low high temperatures. Particular attention is paid role gasotransmitters interaction mediators (in particular, Ca 2+ ions ROS) formation adaptive extreme Pathways stress-induced enhancement synthesis plants considered. Mechanisms effect on some proteins system, well state antioxidant osmoprotective systems during temperatures, were analyzed. Possibilities practical use donors inductors discussed.

Язык: Английский

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Hydrogen sulfide and ethylene regulate sulfur-mediated stomatal and photosynthetic responses and heat stress acclimation in rice

Plant Physiology and Biochemistry, Год журнала: 2024, Номер 207, С. 108437 - 108437

Опубликована: Фев. 1, 2024

Язык: Английский

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The molecular dynamics between reactive oxygen species (ROS), reactive nitrogen species (RNS) and phytohormones in plant’s response to biotic stress

Plant Cell Reports, Год журнала: 2024, Номер 43(11)

Опубликована: Окт. 16, 2024

Язык: Английский

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Effect of hydrogen sulfide (H2S) on the growth and development of tobacco seedlings in absence of stress

BMC Plant Biology, Год журнала: 2024, Номер 24(1)

Опубликована: Март 2, 2024

Abstract Background Hydrogen sulfide (H 2 S) is a novel signaling molecule involved in the growth and development of plants their response to stress. However, involvement H S promoting tobacco still unclear. Results In this study, we explored effect pre-soaking or irrigating roots with 0.0, 2.0, 4.0, 6.0, 8.0 mM sodium hydrosulfide (NaHS) on endogenous production, antioxidant enzymatic cysteine desulfhydrase activities, seed germination, agronomic traits, photosynthetic pigments contents, root vigor. The results revealed that exogenous NaHS treatment could significantly promote production by inducing gene expression D/L-CD activities enzymes. Additionally, significant increase traits contents pigments, no difference carotenoid content among treated 0.0 was observed. germination speed, dry weight, vigor seeds, whereas percentage observed treatment. Furthermore, activity superoxide dismutase (SOD) peroxidase (POD) enzymes, which reduces damage due oxidative stress maintaining reactive oxygen species homeostasis. Conclusions These would aid enhancing our understanding S, plants.

Язык: Английский

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Sodium nitroprusside modulates oxidative and nitrosative processes in Lycopersicum esculentum L. under drought stress

Plant Cell Reports, Год журнала: 2024, Номер 43(6)

Опубликована: Май 28, 2024

Abstract Key message Sodium nitroprusside mediates drought stress responses in tomatoes by modulating nitrosative and oxidative pathways, highlighting the interplay between nitric oxide, hydrogen sulfide, antioxidant systems for enhanced tolerance. While oxide (NO), a signalling molecule, enhances plant tolerance to abiotic stresses, its precise contribution improving tomato (DS) through oxide-nitrosative processes is not yet fully understood. We aimed examine interaction of NO signaling, revealing how sodium (SNP) could mitigate effects DS on tomatoes. DS-seedlings endured 12% polyethylene glycol (PEG) 10% nutrient solution (NS) 2 days, then transitioned half-strength NS 10 days alongside control plants. reduced total dry weight, chlorophyll b, Fv/Fm, leaf water potential (Ψ I ), relative content, but improved peroxide (H O proline, content. The SNP DS-induced H generation reducing thiol (–SH) carbonyl (–CO) groups. increased only also activity l -cysteine desulfhydrase (L-DES), leading S. Decreases S-nitrosoglutathione reductase (GSNOR) NADPH oxidase (NOX) suggest regulatory mechanism which S -nitrosylation [formation S-nitrosothiol (SNO)] may influence protein function signaling pathways during DS. Moreover, ascorbate (AsA) glutathione (GSH) oxidized (GSSG) levels plants under drought. Furthermore, S, mediated L-DES activity, serve as vital cross-talk impacting Understanding these interactions crucial developing innovative drought-tolerance strategies crops.

Язык: Английский

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Unlocking the versatility of Nitric Oxide in plants and insights into its molecular interplays under biotic and abiotic stress

Nitric Oxide, Год журнала: 2024, Номер 150, С. 1 - 17

Опубликована: Июль 6, 2024

Язык: Английский

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Hydrogen sulfide mechanism of action in plants; from interaction with regulatory molecules to persulfidation of proteins

Nitric Oxide, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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H₂S-Generating Cytosolic L-Cysteine Desulfhydrase and Mitochondrial D-Cysteine Desulfhydrase from Sweet Pepper (Capsicum annuum L.) Are Regulated During Fruit Ripening and by Nitric Oxide

Antioxidants and Redox Signaling, Год журнала: 2023, Номер 39(1-3), С. 2 - 18

Опубликована: Март 23, 2023

Aims: Pepper fruit is a horticultural product worldwide consumed that has great nutritional and economic relevance. Besides the phenotypical changes undergo pepper during ripening, there are many associated modifications at transcriptomic, proteomic, biochemical, metabolic levels. Nitric oxide (NO) hydrogen sulfide (H2S) recognized signal molecules can exert regulatory functions in diverse plant processes. This study aims analyzing interrelationship between NO H2S ripening. Results: Our data indicate H2S-generating cytosolic L-cysteine desulfhydrase (LCD) mitochondrial D-cysteine (DCD) activities downregulated ripening but this effect was reverted after treatment of fruits. Innovation Conclusion: Using as model non-climacteric fruits different stages under an NO-enriched atmosphere, activity LCD DCD analyzed. were The analysis by non-denaturing polyacrylamide gel electrophoresis (PAGE) allowed identifying three isozymes designated CaLCD I to III, which differentially modulated strictly dependent on pyridoxal 5'-phosphate (PLP). In vitro analyses green samples presence compounds including donors, peroxynitrite (ONOO-), reducing agents such reduced glutathione (GSH) (L-Cys) triggered almost 100% inhibition II III. redox adaptation process both enzymes could be cataloged hormesis phenomenon. protein tyrosine (Tyr) nitration (an NO-promoted post-translational modification) recombinant corroborated immunoblot mass spectrometry (MS) analyses. Among 11 Tyr residues present enzyme, MS enabled us identify Tyr82 Tyr254 nitrated ONOO-, occurring near active center where His237 Lys260 together with cofactor PLP involved. These support relationship since regulated physiological event, also extrapolated other species.

Язык: Английский

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Transcription factor CaHDZ15 promotes pepper basal thermotolerance by activating HEAT SHOCK FACTORA6a

PLANT PHYSIOLOGY, Год журнала: 2024, Номер 195(1), С. 812 - 831

Опубликована: Янв. 25, 2024

Abstract High temperature stress (HTS) is a serious threat to plant growth and development crop production in the context of global warming, response HTS largely regulated at transcriptional level by actions various transcription factors (TFs). However, whether how homeodomain-leucine zipper (HD-Zip) TFs are involved thermotolerance unclear. Herein, we functionally characterized pepper (Capsicum annuum) HD-Zip I TF CaHDZ15. CaHDZ15 expression was upregulated abscisic acid basal via loss- gain-of-function assays virus-induced gene silencing overexpression Nicotiana benthamiana plants. acted positively directly targeting activating HEAT SHOCK FACTORA6a (HSFA6a), which further activated CaHSFA2. In addition, interacted with PROTEIN 70-2 (CaHsp70-2) glyceraldehyde-3-phosphate dehydrogenase1 (CaGAPC1), both affected thermotolerance. CaHsp70-2 CaGAPC1 promoted binding promoter CaHSFA6a, thus enhancing its transcription. Furthermore, were protected from 26S proteasome-mediated degradation physical interaction. These results collectively indicate that CaHDZ15, modulated interacting partners CaHsp70-2, promotes transcript CaHSFA6a. Thus, molecular linkage established among CaGAPC1, transcriptionally modulate CaHSFA6a

Язык: Английский

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