Penyakit bercak bercincin pada pepaya yang disebabkan oleh Papaya ringspot virus (PRSV) dilaporkan sudah menyebar luas di Indonesia. Pemencaran penyakit ini diketahui terjadi melalui bibit tanaman terinfeksi dan serangga vektor kutudaun. Penelitian dilakukan untuk menguji efisiensi penularan PRSV dua spesies kutudaun, yaitu Aphis gossypii Myzus persicae membuktikan bahwa tidak dapat ditularkan ...

Human gastric lipase (HGL) cDNA was synthesized by RT-PCR amplification and cloned into the PVL 1392 baculovirus transfer vector. The recombinant transfer vector was cotransfected with a modified baculovirus DNA (Baculogold) which contains a lethal deletion. Cotransfection of baculovirus DNA with the recombinant transfer vector rescues the lethal deletion of this virus DNA and reconstitutes via...

This review outlines aspects on the developmental stages of Trypanosoma cruzi and Trypanosoma rangeli in the invertebrate host, Rhodnius prolixus. Special attention is given to the interactions of these parasites with gut and hemolymph molecules and the effects of the organization of midgut epithelial cells on the parasite development. The vector insect's permissiveness to T. cruzi, which devel...

Characterizing the vector competence of Diaphorina citri Kuwayama for 'Candidatus Liberibacter asiaticus,' the pathogen causing citrus greening, is essential for understanding the epidemiology of this disease that is threatening the U.S. citrus industry. Vector competence studies have been difficult because of the biology of D. citri, the inability to culture the pathogen, and the available dia...

Some plant pathogens form obligate relationships with their insect vector and are vertically transmitted via eggs analogous to insect endosymbionts. Whether insect endosymbionts manipulate plant defenses to benefit their insect host remains unclear. The tomato psyllid, Bactericerca cockerelli (Sulc), vectors the endosymbiont "Candidatus Liberibacter psyllaurous" (Lps) during feeding on tomato (...

The genus Flavivirus, which contains approximately 70 single-stranded, positive-sense RNA viruses, represents a unique model for studying the evolution of vector-borne disease, as it includes viruses that are mosquito-borne, tick-borne or have no known vector. Both theoretical work and field studies suggest the existence of a large number of undiscovered flaviviruses. Recently, the first isolat...

The planthopper Pentastiridius leporinus (Hemiptera: Cixiidae) is the major vector of a nonculturable plant-pathogenic gamma-3 proteobacterium associated with a disease of sugar beet called syndrome "basses richesses" (SBR). The bacterium, here called SBR bacterium, belongs to the Arsenophonous clade, which includes mostly insect-associated facultative symbionts. Assays using field-collected pl...