Journal
ARTHROPOD STRUCTURE & DEVELOPMENT
Volume 43, Issue 6, Pages 579-587Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.asd.2014.07.005
Keywords
Endosymbiotic microorganisms; Sulcia; Sodalis-like bacteria; Transovarial transmission of endosymbionts
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Funding
- [DS/MND/WBiNoZ/IZ/5/2013]
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The green leafhopper, Cicadella viridis lives in symbiotic association with microorganisms. The ultrastructural and molecular analyses have shown that in the body of the C viridis two types of bacteriocyte endosymbionts are present. An amplification and sequencing of 16S rRNA genes revealed that large, pleomorphic bacteria display a high similarity (94-100%) to the endosymbiont 'Candidatus Sulcia muelleri' (phylum Bacteroidetes), whereas long, rod-shaped microorganisms are closely related to the gamma-proteobacterial symbiont Sodalis (97-99% similarity). Both endosymbionts may be harbored in their own bacteriocytes as well as may co-reside in the same bacteriocytes. The ultrastructural observations have revealed that the Sodalis-like bacteria harboring the same bacteriocytes as bacterium Sulcia may invade the cells of the latter. Bacteria Sulcia and Sodalis-like endosymbionts are transovarially transmitted from one generation to the next. However, Sodalis-like endosymbionts do not invade the ovaries individually, but only inside Sulcia cells. Apart from bacteriocyte endosymbionts, in the body of C viridis small, rod-shaped bacteria have been detected, and have been identified as being closely related to gamma-proteobacterial microorganism Pectobacterium (98-99% similarity). The latter are present in the sheath cells of the bacteriomes containing bacterium Sulcia as well as in fat body cells. (C) 2014 Elsevier Ltd. All rights reserved.
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