Bishop, Alistair H., Gowen, Simon R., Pembroke, Barbara and Trotter, James R. (2007) Morphological and molecular characteristics of a new species of Pasteuria parasitic on Meloidogyne ardenensis. Journal of Invertebrate Pathology, 96 (1). pp. 28-33. ISSN 0022-2011 (doi:10.1016/j.jip.2007.02.008)

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Abstract

A species of the hyper-parasitic bacterium Pasteuria was isolated from the root-knot nematode Meloidogyne ardenensis infecting the roots of ash (Fraxinus excelsior). It is morphologically different from some other Pasteuria pathogens of nematodes in that the spores lack a basal ring on the ventral side of the spore and have a unique clumping nature. Transmission electron microscopy (TEM) showed that the clumps of spores are not random aggregates but result from the disintegration of the suicide cells of the thalli. Sporulation within each vegetative mycelium was shown to be asynchronous. In addition to the novel morphological features 16S rRNA sequence analysis showed this to be a new species of Pasteuria which we have called P. hartismeri. Spores of P. hartismeri attach to juveniles of root-knot nematodes infecting a wide range of plants such as mint (Meloidogyne hapla), rye grass (unidentified Meloidogyne sp.) and potato (Meloidogyne fallax).

Item Type:	Article
Uncontrolled Keywords:	pasteuria hartismeri, pasteuria penetrans, meloidogyne ardenensis, m. hapla, m. fallax, root knot nematode, phylogeny, biological control
Subjects:	Q Science > QR Microbiology
Faculty / School / Research Centre / Research Group:	Faculty of Education, Health & Human Sciences > School of Human Sciences (HUM)
Related URLs:	Publisher Organisation Organisation
Last Modified:	09 Oct 2021 04:46
URI:	http://gala.gre.ac.uk/id/eprint/2470

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