The Effect of Chitosan–Ag Nanocomposites on the Development of Protective Mechanisms in Potato Plants and Resistance to Phytophthora infestans

IF 1.1 4区生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Applied Biochemistry and Microbiology Pub Date : 2026-04-16 DOI:10.1134/S0003683825602690

L. G. Yarullina, E. A. Cherepanova, G. F. Burkhanova, E. A. Zaikina, V. O. Tsvetkov, A. V. Sorokan, I. S. Mardanshin, I. Y. Fatkullin, A. D. Pustovaya, J. N. Kalatskaja, K. S. Hileuskaya

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Abstract

A comparative assessment of the effect of two structurally different chitosan–silver nanocomposites (Ch–Ag 1 and Ch–Ag 2) on plant resistance to Phytophthora infestans, the state of the pro-/antioxidant system, the transcriptional activity of PR protein genes, and potato productivity was carried out. The dependence of the biological activity of Ch–Ag nanocomposites on their structure has been revealed. The mechanisms of activation of potato defense systems under the influence of Ch–Ag nanocomposites were mediated by the accumulation of hydrogen peroxide, a decrease in catalase activity, and an increase in the transcription of genes encoding PR proteins: chitinase (PR-3), thaumatin-like protein (PR-5), RNase (PR-10), and methyltransferase (MT). It was shown that treatment with Ch–Ag 2 reduced the degree of damage to the leaves of P. infestans and increased the mass of potato mini-tubers. The data obtained indicate that chitosan–silver nanocomposites are promising biological products for increasing the stability and productivity of potatoes.

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壳聚糖-银纳米复合材料对马铃薯保护机制发展及对疫霉抗性的影响

比较评价了两种结构不同的壳聚糖-银纳米复合材料Ch-Ag 1和Ch-Ag 2对马铃薯抗疫霉抗性、促抗系统状态、PR蛋白基因转录活性和产量的影响。揭示了Ch-Ag纳米复合材料的生物活性与其结构的关系。Ch-Ag纳米复合材料对马铃薯防御系统激活的机制是过氧化氢的积累、过氧化氢酶活性的降低以及编码几丁质酶（PR-3）、thaumatin样蛋白（PR-5）、RNase （PR-10）和甲基转移酶（MT）基因转录的增加。结果表明，Ch-Ag - 2处理降低了马铃薯马铃薯致病菌对叶片的伤害程度，增加了马铃薯小块茎的质量。研究结果表明，壳聚糖-银纳米复合材料是提高马铃薯稳定性和产量的有前景的生物制品。

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来源期刊

Applied Biochemistry and Microbiology 生物-生物工程与应用微生物

CiteScore

1.70

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： Applied Biochemistry and Microbiology is an international peer reviewed journal that publishes original articles on biochemistry and microbiology that have or may have practical applications. The studies include: enzymes and mechanisms of enzymatic reactions, biosynthesis of low and high molecular physiologically active compounds; the studies of their structure and properties; biogenesis and pathways of their regulation; metabolism of producers of biologically active compounds, biocatalysis in organic synthesis, applied genetics of microorganisms, applied enzymology; protein and metabolic engineering, biochemical bases of phytoimmunity, applied aspects of biochemical and immunochemical analysis; biodegradation of xenobiotics; biosensors; biomedical research (without clinical studies). Along with experimental works, the journal publishes descriptions of novel research techniques and reviews on selected topics.