Viroid-Induced Diseases in Ornamental Plants

Abstract

Viroids are circular, single-stranded RNA molecules which are virus-like pathogen. Up to now, it is mentioned that there are 32 viroid species defined on different host plants. They are divided into two families, Pospiviroidae and Avsunviroidae, depending on the region where they settled in the cell and genome structure. They have a wide host range ranging from perennials to annuals including ornamental plants. Besides they infected ornamental plants, certain viroids can cause latent infections in some of them. In this case, it is possible that the viroids could be spread on larger of areas and transmission to other crops by ornamental plants. This article intends to give information about the viroids identified in the ornamental plants  to the present day.

Keywords

• Viroid,ornamentals,plant,disease

Süs Bitkilerinde Görülen Viroid Kaynaklı Hastalıklar

Öz

Viroidler dairesel biçimli tek iplikçikli RNA molekülünden oluşan virüs benzeri hastalık etmenleridir. Günümüze kadar değişik konukçularda tanımlanmış 32 viroid türünün bulunduğu belirtilmektedir. Viroidler hücrede yerleştikleri bölge ve genom yapısına göre Pospoviroidae ve Avsunviroidae olmak üzere 2 familyaya ayrılmaktadırlar. Viroidler tek yıllıklardan çok yıllık bitkilere kadar değişen, süs bitkilerini de kapsayan geniş bir konukçu dizisine sahiptirler. Süs bitkilerinde hastalık oluşturmalarına ek olarak, bazı viroidler bir kısım süs bitkisinde latent enfeksiyonlar meydana getirmektedir. Bu durumda, viroidlerin süs bitkileri vasıtasıyla daha geniş alanlara yayılması ve diğer kültür bitkilerine taşınabilmesi bu konuyu önemli kılmaktadır. Bu makale ile günümüze kadar süs bitkilerinde belirlenmiş viroidler konusunda bilgiler verilmesi amaçlanmıştır.

Anahtar Kelimeler

• Viroid,süs bitkileri,bitki,hastalık

Kaynakça

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