Om-Hashem M. El Banaa l, A.A. Abou Zeid2, Fawzia I. Moursy3 and Azza, G. Farag
...ype species of the genus spiroplasma. Spiralin gene is the gene responsible for spiralin which is the major protein of Spiroplasma citri (S. citri Saglio et al), the causal organism of citrus stubborn disease. RecA gene protein is the enzyme primarily responsible for the homologous recombination of chromosomal DNA in bacteria. The Immunocapture- Polymerase Chain Reaction (IC-PCR) technique was applied for detection of S. cit...
Karl Maramorosch
...used by phytoplasmas and spiroplasmas. Earlier attempts to concentrate, purify and visualize by electron microscopy the presumptive viruses have failed. Causative agents of yellows-type plant diseases were classified as viruses because no fungi or bacteria could be detected in diseased plants. The inadequate characterization of viruses delayed the discovery of the pathogens of yellows-type diseases by forty years. In 1967 Japanese plant pathologists and entomo...
