Spiralin is the most abundant protein at the surface of the plant pathogenic mollicute Spiroplasma citri and hence might play a role in the interactions of the spiroplasma with its host plant and/or its insect vector. To study spiralin function, mutants were produced by inactivating the spiralin gene through homologous recombination. A spiralin-green fluorescent protein (GFP) translational fusi...

Spiroplasma citri is a plant pathogenic mollicute transmitted by the leafhopper vector Circulifer haematoceps. Successful transmission requires the spiroplasmas to cross the intestinal epithelium and salivary gland barriers through endocytosis mediated by receptor-ligand interactions. To characterize these interactions we studied the adhesion and invasion capabilities of a S. citri mutant using...

Spiroplasma citri is a plant-pathogenic mollicute phylogenetically related to Gram-positive bacteria. Spiroplasma cells are restricted to the phloem sieve tubes and are transmitted from plant to plant by the leafhopper vector Circulifer haematoceps. In the plant sieve tubes, S. citri grows on glucose and fructose, whereas in the leafhopper haemolymph the spiroplasma must grow on trehalose, the ...

strains of spiroplasma citri have been classified into five groups based on electrophoretic mobility (em) of spiralin protein and rflp analysis of spiralin gene (foissac et al. 1996). in the present study, two isolates of s. citri qualifying for formation of a sixth group are reported. infection of sesame plants by s. citri has been reported previously (salehi and izadpanah 2002). samples of ve...

curly top disease is one of the important diseases of sugar beet. spatial pattern and population variation of leafhoppers circulifer haematoceps, and c. tenellus, vectors of sugar beet curly top virus, were studied in hamadan province, iran for three years (2007- 2009). sampling was carried out at the early stage of the plant growth, in accordance with planting date for 9 weeks, in 7- 10 day in...

Amaç: Bu çalışmada Doğu Akdeniz Bölgesindeki Adana, Osmaniye, Mersin, Hatay illerinde birinci ve ikinci ürün mısır üretim alanlarında bulunan Cicadellidae familyasına ait zararlı türlerini belirlemektir.Yöntem Bulgular: çalışma 2013–2014 yıllarında Bölgesinde yer alan Osmaniye illerindeki ekiliş yürütülmüştür. Örneklemeler her tarlasının farklı beş noktasında vakumlu böcek toplama (D-Vac) aleti...