Ultrastructure of the salivary glands, alimentary canal and bacteria-like organisms in the Asian citrus psyllid, vector of citrus huanglongbing disease bacteria

Journal of Microscopy and Ultrastructure
El-Desouky AmmarRobert G Shatters

Abstract

The Asian citrus psyllid (ACP, Diaphorina citri, Hemiptera: Liviidae) is the principal vector of Candidatus Liberibacter asiaticus (Las), the putative bacterial agent of citrus greening/huanglongbing (HLB); currently the most serious citrus disease worldwide. Las is transmitted in a persistent-propagative manner by ACP, and the salivary glands and midgut have been suggested as transmission barriers that can impede translocation of Las within the vector. However, no detailed ultrastructural studies have been reported on these organs in this or other psyllid species, although some bacterium-like structures have been described in them and assumed to be the causal agents of HLB. In this study, we describe the ultrastructure of the salivary glands, filter chamber, other parts of the alimentary canal, and other organs and tissues of ACP including the compound ganglionic mass (in the thorax) and the bacteriome (in the abdomen). Furthermore, in addition to two ultrastructurally apparently different symbiotic bacteria found in the bacteriome, other morphological types of bacteria were found in the gut epithelial cells and salivary glands of both Las-infected (quantitative polymerase chain reaction positive) and noninfected (quantitative...Continue Reading

References

Oct 1, 2003·Tissue & Cell·Marcos M ReisMaurilio J Soares
Sep 13, 2005·Annual Review of Microbiology·Paul Baumann
Sep 17, 2008·Annual Review of Entomology·El-Desouky AmmarSaskia A Hogenhout
Apr 27, 2010·Annual Review of Phytopathology·Tim R Gottwald
Nov 11, 2010·Journal of Economic Entomology·K S Pelz-StelinskiM E Rogers
Dec 21, 2011·Environmental Entomology·W Rodney CooperGary J Puterka
Oct 21, 2015·Insect Biochemistry and Molecular Biology·Hai-Jian HuangChuan-Xi Zhang

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Citations

Jun 7, 2018·Phytopathology·M M ShimwelaA H C van Bruggen
Feb 13, 2021·Archives of Insect Biochemistry and Physiology·Luana P MonteiroMaria G de A Oliveira

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Methods Mentioned

BETA
chip
transmission electron microscopy
dissection
light microscopy

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