Abstract
The paper analyzes fungi of the genus Fusarium isolated from plants and tubers of different potato cultivars grown on the territory of Tatarstan. It was established that the majority of the strains belonged to the Fusarium oxysporum species complex. Isolates obtained from the root necks of wilting potato plants and conditionally healthy tubers are, to varying degrees, capable of causing dry rot of tubers during artificial inoculation. Also, the virulence of the strains does not correlate with extracellular proteolytic activity. It was shown that the tubers of the Zhukovskij rannij cultivar are most sensitive to fusaria infections, in contrast to the Red Scarlet and Reggi cultivars.
Highlights
The genus Fusarium has attracted close attention due to their wide distribution in various soils, pathogenicity in relation to important crops, and their role as toxin producers [1]
Pure cultures of 7 Fusarium isolates were isolated from conditionally healthy tubers and the root necks of potato plants with signs of Fusarium wilt (FW)
One of the isolates was identified as F. solani, while the remaining six belonged to the F. oxysporum species complex
Summary
The genus Fusarium has attracted close attention due to their wide distribution in various soils, pathogenicity in relation to important crops, and their role as toxin producers [1]. Fusarium wilt (FW) of potato is a global disease that reduces the yield and quality of crops under conditions of agro-industrial production [2]. There has been an increase in the prevalence of the disease in the Tatarstan region of the Russian Federation [3], and this has raised interest in the identification and characterization of Fusarium isolates associated with potato plants. Despite the large amount of research devoted to the genus Fusarium, information on the species composition and virulence factors of the strains prevalent in certain regions is scarce or fragmentary. The current study aimed to isolate fungi of the genus Fusarium from potato plants of different varieties, characterize their species composition, and assess their pathogenic properties
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