Viruses Occurring in Onion Crop in Amasya Province, the Major Onion Producing Region in Turkey

Abstract

Amasya is the greatest onion producing area in Turkey. Onion fields from Amasya region were surveyed for virus diseases in 2009-2011 and tested for the presence of the most important onion viruses such as Onion yellow dwarf virus (OYDV), Iris yellow spot virus (IYSV), Leek yellow stripe virus (LYSV), Shallot latent virus (SLV) and Garlic common latent virus (GCLV). The presence of virus diseases and their identification was ascertained through symptom observation in the fields, sap transmission to hosts, and DAS-ELISA. Based on the ELSA results, 57 out of 332 samples (17.16 %) were infected with viruses. The results showed that the highest infection was caused by OYDV (12.33 %) followed by LYSV (3.60 %). Only 1.19 % of the samples were infected with SLV, but none of the samples were found to be infected for GCLV and IYSV.

Serological and molecular detection of Leek yellow stripe virus infecting onion (Allium cepa L.) and leek (Allium ampeloprasum L.) in Ankara, Turkey

“…Therefore, the low LYSV infection rate could most likely be attributed to the absence of aphid vectors on fields that limit the spread of LYSV. Low LYSV infection rates on onions were also reported on surveys in other regions of Turkey and other countries (Dovas and Vovlas 2003, Fidan 2010, Sevik and Akcura 2013, Vučurović et al 2017). However, infection rate of 60.1% was observed in Tehran region of Iran (Shahraeen et al 2008).…”

“…So, RT-PCR was only performed on all samples against LYSV. Previous studies identified OYDV and CMV on Allium species cultivated in other regions of Turkey (Fidan 2010, Sevik and Akcura 2013, Tuzlalı et al 2016.…”

“…Since then, it has been reported to infect onion, leek and other Allium spp. cultivated in East Mediterranean, Amasya province, and South Marmara region of Turkey (Fidan 2010, Fidan and Baloğlu 2009, Sevik and Akcura 2013, Tuzlalı 2018. Although Ankara is one of main onion producing area, there was no study about virus diseases on onion and leek conducted in this province so far.…”

Molecular characterization and recombination analysis of an Indian isolate of Onion yellow dwarf virus

“…In India, OYDVoccurs in epiphytotic proportion (Ahlawat and Varma 1997) and the highest incidence of OYDV infection was reported from Maharashtra, Gujarat and Madhya Pradesh (Gawande et al 2013). It has also been reported from several countries, including Argentina, Turkey, Iran, Serbia, Poland, Italy, Nepal, Sudan, Greece, Egypt, Brazil, Czech Republic and in the USA (Sevik and Akcura 2013;Baghalian et al 2010;Bagi et al 2012;Chodorska et al 2014;Manglli et al 2014;Majumder and Johari 2014 ). Here, we present the complete genome sequence of the OYDV isolate RR1 from onion (Allium cepa) in India.…”

Türkiye’de Yaygın Olarak Üretilen On Beş Soğan Çeşidinin Leek yellow stripe virus (LYSV)’üne Karşı Reaksiyonları

“…It was first reported in Turkey in leek planted in Marmara region (Korkmaz and Cevik, 2009). Later on, the virus was shown to infect leek, onion, and garlic grown in East Mediterranean, Amasya province, and Marmara region of Turkey (Fidan and Baloğlu, 2009;Fidan, 2010;Sevik and Akcura, 2013;Tuzlalı, 2018;Sarı et al, 2020).…”