Vladislava Maslennikova^1,2, Evgeniya Shelikhova^1,2, Kirill Mosalev¹, Kirill Tabanyukhov^1,2, Svetlana Miroshnichenko¹, Ilya Deulin¹, Mariya Pykhtina¹*

¹Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, 2 Timakova Street, 630630, Russia

²Novosibirsk State Agrarian University, Novosibirsk, Dobrolubova Street 160, 630039, Russia

 

*Corresponding author’s email: pykhtina_maria@mail.ru

Received: 20 May 2025 / Accepted: 09 August 2025 / Published Online: 27 August 2025

 

Abstract

 

Viruses significantly affect various aspects of potato plants by inhibiting their growth and development and reducing their yield. Different potato varieties vary in their resistance to viruses, ranging from highly susceptible to completely resistant, and this is influenced by many factors including rational zoning. In this work, the effect of the PVX, PVY, PVM, PLRV, PVA, PVS and PSTVd viruses on the potato varieties Gala, Red Scarlett and Rosara were investigated. All three varieties were resistant to PVY in accordance with official registers. Mono-infection confirmed this resistance through the absence of morphological manifestations. The Gala variety was characterized only by poly-infection, which only led to a drop in the chlorophyll and carotenoid content, an increase in the malonic dialdehyde level and, accordingly, was manifested by leaf deformation, chlorosis and stem thinning. A proportion of 20.5% of the Rosara variety potatoes were infected with PVY. Poly-infection decreased the chlorophyll a level, increased the carotenoid and peroxidase levels, and slightly increased the MDA level, which resulted in leaf chlorosis. The uninfected Red Scarlett potatoes had low peroxidase levels, high MDA levels, and the lowest number of stems. The occurrence of PVY was highest in this cultivar (87.8%). Infection with the PVY and PVM viruses was accompanied by a decrease in chlorophyll a, an increase in MDA and slight chlorosis. Thus, viral infection, especially polyinfection, by increasing the level of malondialdehyde and disrupting the photosynthetic system, will lead to increased susceptibility of plants to biotic and abiotic factors.

 

Keywords: Potato viruses, Polyinfection of рotatoes, Chlorophylls, Peroxidase, MDA, Carotenoids, Oxidation-reduction balance

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