Bacterial Allies in Agricultural Defense: Evaluating Xenorhabdus and Photorhabdus Supernatants Against Phytophthora infestans and Monilinia laxa

Year 2024, Volume: 12 Issue: 4, 2131 - 2138, 23.10.2024

Derya Uluğ

https://doi.org/10.29130/dubited.1463746

Abstract

Fungal plant pathogens represent a significant threat to global agriculture, affecting crop productivity and food security. Phytophthora infestans and Monilinia laxa are two such pathogens causing blights and brown rot, respectively, in economically vital crops like potato and stone fruits. Developing sustainable management strategies is crucial to mitigate these threats. Xenorhabdus and Photorhabdus bacteria produce various secondary metabolites with different biological activities. This study investigates the antifungal activity of cell-free supernatants from Xenorhabdus and Photorhabdus bacteria against P. infestans and M. laxa. Results demonstrate varying degrees of antifungal efficacy among bacterial species, with X. cabanillasii and X. szentirmaii exhibiting significant suppression of fungal growth. The findings underscore the importance of exploring biocontrol agents in integrated pest management practices.

Keywords

Natural products, biological control, antifungal, plant pathogenic fungi

Xenorhabdus ve Photorhabdus bakterilerine ait süpernatantların Phytophthora infestans ve Monilinia laxa türlerine karşı etkinliklerinin belirlenmesi

Abstract

Fungal fitopatojenler, tarım verimliliğini ve gıda güvenliğini etkileyerek tarımsal üretimde ciddi bir tehdit oluşturur. Phytophthora infestans ve Monilinia laxa gibi patojenler, ekonomik olarak önemli tarım ürünlerinde sırasıyla solgunluk ve kahverengi çürüklere neden olan önemli fitopatojenlerdir. Bu fitopatojenlerin etkilerini hafifletmek için sürdürülebilir yönetim stratejileri geliştirmek hayati önem taşımaktadır. Xenorhabdus ve Photorhabdus cinslerine ait bakterilerin pek çok farklı biyolojik aktiviteye sahip sekonder metabolitler ürettiği bilinmektedir. Bu çalışma, Xenorhabdus ve Photorhabdus bakterilerinden elde edilen süpernatantların P. infestans ve M. laxa'ya karşı antifungal aktivitesini belirlemek amacıyla yapılmıştır. Sonuçlar, bakteri türlerinin değişen derecelerde antifungal etkinlik gösterdiğini ve X. cabanillasii ve X. szentirmaii'nin fungal büyümeyi önemli ölçüde bastırdığını göstermektedir.

Keywords

Doğal ürünler, biyolojik mücadele, antifungal, bitki patojeni fungus

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