| interrelationships between "candidatus phytoplasma asteris" and its leafhopper vectors (homoptera: cicadellidae). | the titer of chrysanthemum yellows phytoplasma (cyp, "candidatus phytoplasma asteris") in the three vector species euscelis incisus kirschbaum, euscelidius variegatus kirschbaum, and macrosteles quadripunctulatus kirschbaum (homoptera: cicadellidae) was measured after controlled acquisition from infected chrysanthemum carinatum (schousboe) (daisy) plants. phytoplasma dna was quantified in relation to insect dna (genome units [gu] of phytoplasma dna per ng of insect dna) by using a quantitative r ... | 2007 | 17972626 |
| effects of pseudomonas putida s1pf1rif against chrysanthemum yellows phytoplasma infection. | phytoplasmas cause damage on a number of plant species leading to relevant economical loss. up to now, strategies to limit their spread led to only partial success. in this context, the use of plant-beneficial bacteria to control phytoplasmas has never been explored. the aim of this work was to assess the effect of pseudomonas putida s1pf1rif against chrysanthemum yellows phytoplasma (cyp) infection of daisy. plant biomass, root architecture, symptom severity, phytoplasma titer, and viability we ... | 2010 | 20626284 |
| host plant determines the phytoplasma transmission competence of empoasca decipiens (hemiptera: cicadellidae). | phytoplasmas are phloem-restricted plant pathogens transmitted by leafhoppers, planthoppers, and psyllids (hemiptera). most known phytoplasma vectors belong to the cicadellidae, but many are still unknown. within this family, empoasca spp. (typhlocybinae) have tested positive for the presence of some phytoplasmas, and phytoplasma transmission has been proven for one species. the aim of this work was to investigate the ability of empoasca decipiens paoli in transmitting chrysanthemum yellows phyt ... | 2011 | 21510180 |
| selection of reference genes from two leafhopper species challenged by phytoplasma infection, for gene expression studies by rt-qpcr. | phytoplasmas are phloem-limited phytopathogenic wall-less bacteria and represent a major threat to agriculture worldwide. they are transmitted in a persistent, propagative manner by phloem-sucking hemipteran insects. for gene expression studies based on mrna quantification by rt-qpcr, stability of housekeeping genes is crucial. the aim of this study was the identification of reference genes to study the effect of phytoplasma infection on gene expression of two leafhopper vector species. the iden ... | 2013 | 24119747 |
| genome sequence, prevalence and quantification of the first iflavirus identified in a phytoplasma insect vector. | the leafhopper euscelidius variegatus is a natural vector of chrysanthemum yellows phytoplasma (cy) and an efficient vector of flavescence dorée phytoplasma (fd) under laboratory conditions. during a transcriptome sequencing (rna-seq) project aimed at investigating the interactions between the insect and the two phytoplasmas, a 10,616-nucleotide-long contig with high sequence similarity to known picorna-like viruses was identified among the assembled insect transcripts. the discovery came totall ... | 2017 | 27888410 |