Proc Natl Acad Sci U S A 2015 Jun 1;112(24):7605-10. Epub 2015 Jun 1.
Emerging Pathogens Institute, University of Florida, Gainesville, FL 32610-0009
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Phytopathology 2014 Apr;104(4):416-21
Over the last decade, the plant disease huanglongbing (HLB) has emerged as a primary threat to citrus production worldwide. HLB is associated with infection by phloem-limited bacteria ('Candidatus Liberibacter' spp.) that are transmitted by the Asian citrus psyllid, Diaphorina citri. Read More
Proc Natl Acad Sci U S A 2012 Jul 10;109(30):12213-8. Epub 2012 Jul 10.
Emerging Pathogens Institute, University of Florida, Gainesville, FL 32610, USA.
The citrus disease huanglongbing (HLB), associated with an uncultured bacterial pathogen, is threatening the citrus industry worldwide. A mathematical model of the transmission of HLB between its psyllid vector and citrus host has been developed to characterize the dynamics of the vector and disease development, focusing on the spread of the pathogen from flush to flush (a newly developing cluster of very young leaves on the expanding terminal end of a shoot) within a tree. This approach differs from that of prior models for vector-transmitted plant diseases where the entire plant is the unit of analysis. Read More
J Econ Entomol 2016 10 24;109(5):1973-1978. Epub 2016 Jul 24.
Texas A&M University-Kingsville Citrus Center, Weslaco, TX 78599
The Asian citrus psyllid preferentially feeds and exclusively reproduces on young, newly emerged flush shoots of citrus. Asian citrus psyllid nymphs feed and complete their life stages on these flush shoots. Recent studies conducted under greenhouse conditions have shown that the transmission rates of 'Candidatus Liberibacter asiaticus' (CLas), the putative causal agent of huanglongbing disease of citrus, are enhanced when flush shoots are present. Read More
Phytopathology 2014 Mar;104(3):257-68
We report the detection of the huanglongbing (HLB)-associated bacterium 'Candidatus Liberibacter asiaticus' from both plants and insects in Pakistan and the seasonal variability in the numbers of 'Ca. L. asiaticus'-positive psyllid vector, Diaphorina citri. Read More