The effect of da1 and dar family members on arabidopsis thaliana and pseudomonas syringae interactions
Başlık çevirisi mevcut değil.
- Tez No: 799774
- Danışmanlar: DR. VOLKAN ÇEVİK
- Tez Türü: Yüksek Lisans
- Konular: Moleküler Tıp, Mikrobiyoloji, Molecular Medicine, Microbiology
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2017
- Dil: İngilizce
- Üniversite: Unıversıty Of Bath
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
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Özet (Çeviri)
Plants have evolved highy complex defence system that protects them against pathogens. Plants evolved resistance (R) proteins to recognise and activate an effective immunity following recognition of pathogen virulence factors called effectors. Pathogen effectors can be recognized either directly or indirectly by the plant R proteins, and recently, a novel recognition mechanism called“integrated decoy model”has been revealed in resistance signalling. In this model, R proteins contain non-canonical protein domains that are normally found in host plant proteins targeted by the pathogen effectors. Such an integrated domain, LIM-Peptidase has been identified in two R proteins that confer resistance against the white rust pathogen of Arabidopsis thaliana. LIM-Pepdidase domains are also found in highly conserved DA1 and DAR proteins, which are involved in organ growth and development in plants. The exact function of this protein family in resistance or susceptibility to the plant pathogens is unknown. Here, we investigated the effect of DA1 gene family on susceptibility or resistance to the bacterial pathogen P. syringae. Transgenic A. thaliana lines (35S:DA1-HF, 35S:DAR1-HF, 35S:DAR2-HF, 35S:DAR3-HF, 35S:DAR6-HF and 35S:DAR7-HF) overexpressing DA1 family members in Ws-2 background, and some mutant lines (Col-da1.1, Col-eds1.2, Col-eds1-dar5 and Col-da1.1-eod.1) were used in this project. Transgenic lines overexpressing DA1 and DAR family proteins showed different degree of susceptibility. Lines over-expressing DA1 and DAR7 proteins as well as the dominant-negative mutant (da1.1) of A. thaliana enhanced susceptibility to the pathogen, while lines over-expressing DAR2 and DAR3 proteins showed enhanced resistance to the pathogen. This study showed that DA1 and DAR family proteins are involved in resistance as well as susceptibility during plant pathogen interactions
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