An ultrastructural study of the novel symbiont Cardinium sp. was performed with particular attention to the description of the structure and organization of highly elaborated cytoplasmic complexes containing microtubule-like elements (MLC). Three major components were observed. The first was a system of microtubule-like elements (ML) arranged in parallel array extending from the plasma membrane into the cytosol of the bacterium. The second, an fibrous electrondense plaque (FEP), approximately 8 nm thick, located 7.5 nm away from the plasma membrane and parallel to it. The third component, not previously reported, was described for the first time in this paper. This consisted of a set of regularly distributed 8 urn electron-dense structures (ES), with a center-to-center spacing of about 12 nm, adhering to the outer leaflet of the plasma membrane. Often, the ES created a close connection between the plasma membrane and the outer membrane, so that in this area they became straight and stiff. The first and second component of these structures are compared to previously described microtubules and microfilaments.

Ultrastructure of a novel Cardinium sp symbiont in Scaphoideus titanus (Hemiptera : Cicadellidae) / E. Bigliardi, L. Sacchi, M. Genchi, A. Alma, M. Pajoro, D. Daffonchio, M. Marzorati, A.M. Avanzati. - In: TISSUE & CELL. - ISSN 0040-8166. - 38:4(2006 Aug), pp. 257-261. [10.1016/j.tice.2006.06.001]

Ultrastructure of a novel Cardinium sp symbiont in Scaphoideus titanus (Hemiptera : Cicadellidae)

M. Pajoro;D. Daffonchio;M. Marzorati;
2006

Abstract

An ultrastructural study of the novel symbiont Cardinium sp. was performed with particular attention to the description of the structure and organization of highly elaborated cytoplasmic complexes containing microtubule-like elements (MLC). Three major components were observed. The first was a system of microtubule-like elements (ML) arranged in parallel array extending from the plasma membrane into the cytosol of the bacterium. The second, an fibrous electrondense plaque (FEP), approximately 8 nm thick, located 7.5 nm away from the plasma membrane and parallel to it. The third component, not previously reported, was described for the first time in this paper. This consisted of a set of regularly distributed 8 urn electron-dense structures (ES), with a center-to-center spacing of about 12 nm, adhering to the outer leaflet of the plasma membrane. Often, the ES created a close connection between the plasma membrane and the outer membrane, so that in this area they became straight and stiff. The first and second component of these structures are compared to previously described microtubules and microfilaments.
Division Protein Ftsz ; Cell-Division ; Escherichia coli ; Bacteroidetes Symbiont ; Fine-Structure ; Polymerization ; Bacteria ; Microtubules ; Flagella ; Bodies
Settore AGR/16 - Microbiologia Agraria
ago-2006
http://scienceserver.cilea.it/cgi-bin/sciserv.pl?collection=journals&journal=00408166&issue=v38i0004&article=257_uoancssistc&form=fulltext
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/31235
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