Status As Pests
Citrus greening, known as "Huanglongbing" is associated with the presence of a bacterium Liberibacter asiaticum is an example of a plant pathogen that has coevolved with its insect vector, the "Asian Citrus Psyllid", ACP, Diaphorina citri, such that the pathogen causes little or no harm to the insect, but causes a major disease which can reduce citrus quality, flavor, and production as well as causing citrus trees to die. The ACP was found in Florida in 1998, and has since spread across the southern U.S. into Texas. This disease, also known as Huanglongbing, was found in Florida citrus groves in 2005. Management methods to reduce the spread of this disease and psyllid populations depend on an Integrated Pest Management approach using insecticides, parasitoids, predators, and pathogens specific to the AsCP. Due to the spread of Citrus Greening world wide and the growing importance of psyllid spread diseases an "International Psyllid Genome Consortium" was established. Insect genomics provides important information on the genetic basis of the pests biology which may be altered to suppress psyllid populations in an environmentally friendly manner. The emerging psyllid genome continues to elucidate psyllid biology, expanding what is known about gene families, genetic variation, and gene expression in insects. Thus far two new psyllid viruses have been discovered, and are being examined as potential biological control agents to reduce psyllid populations. Psyllid cell cultures have also been established by several researchers working with virus propagation, and as a system to propagate the Can. Liberibacter bacterium for molecular studies on infection and replication. Studies on the microbiota have also identified four new species of bacteria. Thus far ten microbial organisms have been identified within these psyllids, among them the primary endosymbiont, whose genome has been sequenced and posted at the NCBI database, as well as a Wolbachia species.
Some of the agriculturally-important pest species are now classified in the family Triozidae.
Read more about this topic: Jumping Plant Louse
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