Understanding the movement of root-knot nematodes encumbered with or without Pasteuria penetrans

Pasteuria penetrans is a naturally occurring bacterial parasite of plant parasitic nematodes showing satisfactory results in a biocontrol strategy of root-knot nematodes (Meloidogyne spp.). The endospores attach to the outside nematode body wall (cuticle) of the infective stage second-stage juvenile...

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Bibliographic Details
Published in:Biocontrol science and technology 2013-01, Vol.23 (1), p.92-100
Main Authors: Vagelas, Ioannis, Dennett, Mike D., Pembroke, Barbara, Ipsilandis, Pandelis, Gowen, Simon R.
Format: Article
Language:English
Subjects:
Biological control
Body wall
Cuticles
Head
Infection
Infective stages
Locomotion
Meloidogyne
modelling
Nematoda
nematode motion
Parasites
Pasteuria penetrans
Roots
Spores
statistical analysis
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Summary:Pasteuria penetrans is a naturally occurring bacterial parasite of plant parasitic nematodes showing satisfactory results in a biocontrol strategy of root-knot nematodes (Meloidogyne spp.). The endospores attach to the outside nematode body wall (cuticle) of the infective stage second-stage juveniles (J2) of Meloidogyne populations. Optimal attachment level should be around 5-10 endospores per juvenile, as enough endospores will initiate infection without reducing the ability of the nematode to invade roots. Greater than 15 endospores may disable the nematode in its movements, and invasion may not take place. In this research, evidence is provided that P. penetrans spores disturbed the nematode forward movement by disorganising the nematode's head turns. The results based on Markov chain and Cochran probability model show that even a low number of 5-8 spores of P. penetrans attached to the nematode cuticle have a significant impact on that movement, which plays a role in nematode locomotion.
ISSN:0958-3157
1360-0478
DOI:10.1080/09583157.2012.736474