Seasonal Patterns in the Frequency of Liberibacter Asiaticus in Populations of (Hemiptera: Psyllidae) in Florida.

Liberibacter asiaticus (Las) is one of the putative causal agents of huanglongbing, which is a serious disease in citrus production. The pathogen is transmitted by Kuwayama (Hemiptera: Psyllidae). As an observational study, six groves in central Florida and one grove at the southern tip of Florida were sampled monthly from January 2008 through February 2012 (50 months).

First report of Passion fruit green spot virus in yellow Passion fruit (Passiflora edulis f. flavicarpa) in Casanare, Colombia.

Passiflora edulis, commonly known as passion fruit, is a vine species of passionflower native to South America. In Colombia, yellow passion fruit (P. edulis f.

Transcriptomic analyses reveal physiological changes in sweet orange roots affected by citrus blight.

Background: Citrus blight is a very important progressive decline disease of commercial citrus. The etiology is unknown, although the disease can be transmitted by root grafts, suggesting a viral etiology. Diagnosis is made by demonstrating physical blockage of xylem cells that prevents the movement of water.

Reassortment of Genome Segments Creates Stable Lineages Among Strains of Orchid Fleck Virus Infecting Citrus in Mexico.

The genus s contains viruses with bipartite, negative-sense, single-stranded RNA genomes that are transmitted by flat mites to hosts that include orchids, coffee, the genus , and citrus. A dichorhavirus infecting citrus in Mexico is classified as a citrus strain of orchid fleck virus (OFV-Cit). We previously used RNA sequencing technologies on OFV-Cit samples from Mexico to develop an OFV-Cit-specific reverse transcription PCR (RT-PCR) assay.

Complete Nucleotide Sequence of a Novel Hibiscus-Infecting Cilevirus from Florida and Its Relationship with Closely Associated Cileviruses.

The complete nucleotide sequence of a recently discovered Florida (FL) isolate of hibiscus-infecting cilevirus (HiCV) was determined by Sanger sequencing. The movement and coat protein gene sequences of the HiCV-FL isolate are more divergent than other genes of the previously sequenced HiCV-HI (Hawaii) isolate.