Luteovirus pavhordei (BYDV-P0) in durum wheat: molecular diagnosis, disease intensity and impact on yield components

Year 2025, Volume: 62 Issue: 3, 355 - 363, 18.09.2025

Yunus Emre Uslu , Sevdiye Yorgancı , Ali Yiğit , Nermin Yaraşır , Neslihan Yıldız

https://doi.org/10.20289/zfdergi.1524869

Abstract

Objective: Luteovirus pavhordei is increasingly causing significant crop losses worldwide, affecting several crops, including durum wheat (Triticum turgidum L. var. durum), which is grown extensively. Plants possess innate defense mechanisms such as resistance genes against viral diseases. Among these, the Bdv2 gene, which occurs naturally in wild wheat varieties, provides resistance specifically to BYDV-P0. In this study, it was observed infected durum wheat varieties exhibited lower chlorophyll (SPAD), number of grains per ear (grains/ear) and ear yield (g/ear).
Material and Methods: The visual assessment revealed a high symptomatic infection among Luteovirus pavhordei infected durum wheat, underscoring the severity of the disease. Using Bdv2-specific primers (BYAgi), it was screened for the presence of the Bdv2 gene in five different durum wheat varieties; however, none harbored this resistance gene.
Results: The findings indicate that the absence of the Bdv2 gene in the studied durum wheat varieties renders them susceptible to BYDV-P0. The virus-induced reductions in chlorophyll and ear yield formation further highlight the detrimental impact of BYDV-P0 on durum wheat.
Conclusion: These results underscore the urgency of developing strategies to mitigate the effects of this viral disease in wheat cultivation

Keywords

: Bdv2 gene , BYDV-P0 , SPAD , Triticum turgidum L. var. durum , viral disease , yield

Makarnalık buğdayda Luteovirus pavhordei (BYDV-P0): moleküler tanısı, hastalık şiddeti ve verim bileşenleri üzerindeki etkisi

Abstract

Amaç: Luteovirus pavhordei (BYDV-P0), yaygın olarak yetiştirilen makarnalık buğday (Triticum turgidum L. var. durum) dahil olmak üzere çeşitli ürünleri etkileyerek dünya çapında giderek daha fazla ürün kaybına neden olmaktadır. Bitkiler, viral hastalıklara karşı dayanıklılık genleri gibi doğuştan gelen savunma mekanizmalarına sahiptir. Bunlar arasında, yabani buğday çeşitlerinde doğal olarak bulunan Bdv2 geni, özellikle BYDV-P0'a karşı dayanıklılık sağlamaktadır. Bu çalışmada, enfekteli makarnalık buğday çeşitlerinin daha düşük klorofil (SPAD), başak başına tane sayısı (tane/başak) ve başak verimi (g/başak) sergilediği gözlemlenmiştir.
Materyal ve Yöntem: Görsel değerlendirme, BYDV-P0 ile enfekte makarnalık buğday çeşitleri arasında yüksek simptomatik enfeksiyon olduğunu ortaya koyarak hastalığın ciddiyetini vurgulamaktadır. Bdv2’ye özgü primerler (BYAgi) kullanarak, beş farklı makarnalık buğday çeşidinde Bdv2 geninin varlığını taranmıştır; ancak çeşitlerde dayanıklılık geni saptanmamıştır.
Araştırma Bulguları: Bulgular, Bdv2 geninin makarnalık buğday çeşitlerinde bulunmamasının çeşitleri BYDV-P0'a karşı hassas hale getirdiğini göstermektedir. Virüsün klorofil oluşumu ve başak veriminde neden olduğu azalmalar, BYDV-P0'ın makarnalık buğday çeşitleri üzerindeki olumsuz etkisini daha da ön plana çıkarmaktadır.
Sonuç: Bu sonuçlar, buğday yetiştiriciliğinde bu viral hastalığın etkilerini kontrolü ve neden olduğu ürün kayıplarını azaltmak için yeni stratejiler geliştirmenin aciliyetini vurgulamaktadır.

Keywords

Bdv2 geni , BYDV-P0 , SPAD , Triticum turgidum L. var. durum , viral hastalık , verim

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