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34 results on '"Tsyganova, Anna V."'

2. Dynamics of Hydrogen Peroxide Accumulation During Tip Growth of Infection Thread in Nodules and Cell Differentiation in Pea (Pisum sativum L.) Symbiotic Nodules.

Author

Tsyganova, Anna V., Gorshkov, Artemii P., Vorobiev, Maxim G., Tikhonovich, Igor A., Brewin, Nicholas J., and Tsyganov, Viktor E.

Subjects
HYDROGEN peroxide, PLANT defenses, REGULATION of growth, CELL differentiation, ROOT growth, ROOT-tubercles
Abstract

Hydrogen peroxide (H2O2) in plants is produced in relatively large amounts and plays a universal role in plant defense and physiological responses, including the regulation of growth and development. In the Rhizobium–legume symbiosis, hydrogen peroxide plays an important signaling role throughout the development of this interaction. In the functioning nodule, H2O2 has been shown to be involved in bacterial differentiation into the symbiotic form and in nodule senescence. In this study, the pattern of H2O2 accumulation in pea (Pisum sativum L.) wild-type and mutant nodules blocked at different stages of the infection process was analyzed using a cytochemical reaction with cerium chloride. The observed dynamics of H2O2 deposition in the infection thread walls indicated that the distribution of H2O2 was apparently related to the stiffness of the infection thread wall. The dynamics of H2O2 accumulation was traced, and its patterns in different nodule zones were determined in order to investigate the relationship of H2O2 localization and distribution with the stages of symbiotic nodule development in P. sativum. The patterns of H2O2 localization in different zones of the indeterminate nodule have been partially confirmed by comparative analysis on mutant genotypes. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Synthesis, Antibacterial Activity, and Cytotoxicity of Azido-Propargyloxy 1,3,5-Triazine Derivatives and Hyperbranched Polymers.

Author

Tsyganova, Anna V., Petrov, Artem O., Shastin, Alexey V., Filatova, Natalia V., Mumyatova, Victoria A., Tarasov, Alexander E., Lolaeva, Alina V., and Malkov, Georgiy V.

Subjects
*TRIAZINE derivatives, *CYTOTOXINS, *ANTIBACTERIAL agents, *POLYMERS, *BIOMEDICAL materials, *NUCLEAR magnetic resonance spectroscopy
Abstract

A new method for the synthesis of azido-propargyloxy derivatives of 1,3,5-triazine has been developed utilizing the nitrosation of hydrazyno-1,3,5-triazines. New hydrazines (2-hydrazino-4,6-bis(propargyloxy)-1,3,5-triazine and 2,4-dihydrazino-6-propargyloxy-1,3,5-triazine) were synthesized and characterized via FTIR, NMR spectroscopy and elemental analysis. The hyperbranched polymers with azide (diazide monomer) and propargyloxy terminal groups were obtained via the azide-alkyne polycycloaddition reaction of diazide and monoazide AB2-type monomers. The antibacterial activity against Escherichia coli bacteria of 2,4,6-trispropargyloxy-1,3,5-triazine, 2-azido-4,6-bispropargyloxy-1,3,5-triazine, and 2,4-diazido-6-propargyloxy-1,3,5-triazine and their hyperbranched polymers was studied. Only 2,4-diazido-6-propargyloxy-1,3,5-triazine has weak antibacterial activity in comparison with ampicillin. The cytotoxicity of these compounds against M-HeLa, FetMSC, and Vero cell lines was also studied. 2,4,6-trispropargyloxy-1,3,5-triazine does not show any cytotoxic effect (IC50 ≥ 280 µM). It was shown that the presence of an azide group in the compound directly affects the cytotoxic effect. Hyperbranched polymers have a less cytotoxic effect against M-HeLa (IC50 > 100) in comparison with monomers (IC50 = 90–99 µM). This makes it possible to use these polymers as the basis for biocompatible materials in biomedical applications. [ABSTRACT FROM AUTHOR]

Published
2024
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12. RopB protein of Rhizobium leguminosarum bv. viciae adopts amyloid state during symbiotic interactions with pea (Pisum sativum L.)

Author

Kosolapova, Anastasiia O., primary, Belousov, Mikhail V., additional, Sulatsky, Maksim I., additional, Tsyganova, Anna V., additional, Sulatskaya, Anna I., additional, Bobylev, Alexander G., additional, Shtark, Oksana Y., additional, Tsyganov, Viktor E., additional, Volkov, Kirill V., additional, Zhukov, Vladimir A., additional, Tikhonovich, Igor A., additional, and Nizhnikov, Anton A., additional

Published
2022
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13. A variable gene family encoding nodule-specific cysteine-rich peptides in pea (Pisum sativum L.)

Author

Zorin, Evgeny A., primary, Kliukova, Marina S., additional, Afonin, Alexey M., additional, Gribchenko, Emma S., additional, Gordon, Mikhail L., additional, Sulima, Anton S., additional, Zhernakov, Aleksandr I., additional, Kulaeva, Olga A., additional, Romanyuk, Daria A., additional, Kusakin, Pyotr G., additional, Tsyganova, Anna V., additional, Tsyganov, Viktor E., additional, Tikhonovich, Igor A., additional, and Zhukov, Vladimir A., additional

Published
2022
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23. Mutational analysis indicates that abnormalities in rhizobial infection and subsequent plant cell and bacteroid differentiation in pea (Pisum sativum) nodules coincide with abnormal cytokinin responses and localization

Author

Dolgikh, Elena A, primary, Kusakin, Pyotr G, primary, Kitaeva, Anna B, primary, Tsyganova, Anna V, primary, Kirienko, Anna N, primary, Leppyanen, Irina V, primary, Dolgikh, Aleksandra V, primary, Ilina, Elena L, primary, Demchenko, Kirill N, primary, Tikhonovich, Igor A, primary, and Tsyganov, Viktor E, primary

Published
2020
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24. Efficacy of a Plant-Microbe System: Pisum sativum (L.) Cadmium-Tolerant Mutant and Rhizobium leguminosarum Strains, Expressing Pea Metallothionein Genes PsMT1 and PsMT2, for Cadmium Phytoremediation

Author

Tsyganov, Viktor E., primary, Tsyganova, Anna V., additional, Gorshkov, Artemii P., additional, Seliverstova, Elena V., additional, Kim, Viktoria E., additional, Chizhevskaya, Elena P., additional, Belimov, Andrey A., additional, Serova, Tatiana A., additional, Ivanova, Kira A., additional, Kulaeva, Olga A., additional, Kusakin, Pyotr G., additional, Kitaeva, Anna B., additional, and Tikhonovich, Igor A., additional

Published
2020
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34. Whole-genome sequence of six Rhizobium laguerreae strains.

Author

Kirichek EA, Flores-Félix JD, Velázquez E, Tsyganova AV, and Tsyganov VE

Abstract

Rhizobium laguerreae is regarded as a promising candidate for biofertilization of legume plants worldwide through its high efficiency in symbiosis. In this paper, we report high-quality sequences of six R. laguerreae strains with total genome completeness from 93.5% to 97.5%., Competing Interests: The authors declare no conflict of interest.

Published
2024
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