Lipopeptides Produced by Bacillus mojavensis P1709 as an Efficient Tool to Maintain Postharvest Cherry Tomato Quality and Quantity

Polina Galitskaya, Kamalya Karamova, Liliya Biktasheva, Gulnaz Galieva, Alexander Gordeev and Svetlana Selivanovskaya
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Polina Galitskaya: Department of Applied Ecology, Institute of Environmental Sciences, Kazan Federal University, Kazan 420008, Russia
Kamalya Karamova: Department of Applied Ecology, Institute of Environmental Sciences, Kazan Federal University, Kazan 420008, Russia
Liliya Biktasheva: Department of Applied Ecology, Institute of Environmental Sciences, Kazan Federal University, Kazan 420008, Russia
Gulnaz Galieva: Department of Applied Ecology, Institute of Environmental Sciences, Kazan Federal University, Kazan 420008, Russia
Alexander Gordeev: Department of Applied Ecology, Institute of Environmental Sciences, Kazan Federal University, Kazan 420008, Russia
Svetlana Selivanovskaya: Department of Applied Ecology, Institute of Environmental Sciences, Kazan Federal University, Kazan 420008, Russia

Agriculture, 2022, vol. 12, issue 5, 1-14

Abstract: Because of significant yield losses caused by fungal pathogens, new efficient and environmentally safe methods of pest control are needed, and amphiphilic compounds (biosurfactants) produced by many microbes are considered a good alternative. In the present study, biosurfactants produced by the rhizosphere isolate Bacillus mojavensis P1709 were assessed for their ability to protect postharvest cherry tomatoes from decay and mycotoxin contamination caused by Fusarium oxysporum f. sp. lycopersici . It was demonstrated that the genome of B. mojavensis P1709 contained the fenD and srfAA genes, which are responsible for the synthesis of compounds of the fengycin and surfactin families. APF (acid-precipitated fraction) of B. mojavensis P1709 culture medium at a concentration of 20 g L −1 inhibited pathogen radial growth on agar plates by 93%, and T-2 and HT-2 mycotoxin production by 98%, after 5 days of cultivation. APF also suppressed fungal growth in the in vivo test on cherry tomato fruits by 93% and 25% on the 2nd and 7th days of incubation, respectively. The results obtained demonstrate that biosurfactants produced by B. mojavensis P1709 are an efficient tool for protecting postharvest cherry tomatoes from fungal mold decay and mycotoxin contamination.

Keywords: biosurfactants; lipopeptides; cherry tomatoes; plant fungal pathogen; radial growth; T-2 and HT-2 mycotoxins; plant defense-related enzymes (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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