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Abstract

Plants developed various defense mechanisms in order to maintain their lives in nature. Virus induced genesilencing (VIGS) which is known as RNA mediated antiviral defense mechanism is one of these mechanisms. In plants withinfected unmodified viruses, the mechanism is target against the viral genome. The virus vectors carrying the target genes can bealso targeted homogeneous mRNAs. However, VIGS has been widely used for analysis of gene function and functional genomics.These virus vectors were developed for a lot of plants. Recently, Barley Stripe Mosaic Virus (BSMV) has been started utilizing forcereals. BSMV is a positive-sense RNA virus with a broad experimental host range and is the type member of the Hordeivirusgenus. The tripartite genome consists of RNAs α, β and γ. In this study, the experimental principles of BSMV vector and theknowledge about BSMV – VIGS studies applied in some cereals were given.

Keywords

• VIGS, Gene Silencing, BSMV, Cereals

Serin İklim Tahıllarında Virüs Kaynaklı Gen Susturma: BSMV Kullanımı

Öz

Bitkiler doğada canlılıklarını sürdürebilmek için çeşitli savunma mekanizmaları geliştirmişlerdir. RNA ortamlı antiviral savunma mekanizması olarak bilinen Virüs Kaynaklı Gen Susturma (VIGS) bu mekanizmalardan biridir. Virüsle enfekte olmuş bitkilerde, virüs genomuna karşı savunma mekanizması çalışmaktadır. Aynı zamanda hedef geni taşıyan virüs vektörleri homolog içgen mRNA’larını da bozabilmektedir. Bununla birlikte VIGS genin fonksiyonunu anlamada ve fonksiyonel genomik analizleri için kullanılmaktadır. Birçok bitki için virüs vektörleri geliştirilmiştir. Son zamanlarda tahıllar için Arpa Çizgili Mozaik Virüsü (Barley Stripe Mosaic Virus = BSMV) kullanılmaya başlanmıştır. BSMV geniş bir konukçu aralığına sahip pozitif polariteli bir RNA virüsü olup, Hordeivirüs genusunun bir üyesidir. Üç farklı genom RNA (α, β ve γ)’ dan oluşmaktadır. Bu çalışmada BSMV vektörünün çalışma prensibi ve bazı tahıllarda BSMV - VIGS’in uygulamaları hakkında bilgi verilmiştir.

Anahtar Kelimeler

• VIGS, Gen susturma, BSMV, Tahıllar

Kaynakça

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