Comparative effect of root-knot nematode on severity of Verticillium and Fusarium wilt in cotton

Katsantonis, D., Hillocks, R. J. and Gowen, S. (2003) Comparative effect of root-knot nematode on severity of Verticillium and Fusarium wilt in cotton. Phytoparasitica, 31 (2). pp. 154-162. ISSN 0334-2123 doi: 10.1007/BF02980785

Abstract/Summary

The effect of root-knot nematode (RKN) (Meloidogyne incognita) on Verticillium dahliae and Fusarium oxysporum f.sp. vasinfectum in cotton (Gossypium hirsutum) was investigated. Two different inoculation methods were used, one in which inoculum was added to the soil, so that nematode and fungal inoculum were in close proximity; the other, inoculation into the stem, whereby the two inocula were spatially separated. Invasion of the roots by RKN enhanced disease severity, as measured by the height of vascular browning in the stem, following inoculation with either wilt pathogen. The effect of RKN on Fusarium wilt was more pronounced than that on Verticillium wilt. Nematode-enhanced infection by F. oxysporum is a well known effect but there are few reports of enhanced infection by Verticillium due to RKN. Relative resistance of a number of cotton cultivars to both wilt diseases, as measured by height of vascular browning, was similar to the known field performance of the cultivars. The use of vascular browning as an estimate of disease severity was therefore validated.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/8769
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Agriculture, Policy and Development Interdisciplinary centres and themes > Soil Research Centre
Uncontrolled Keywords	cotton, Gossypium hirsutum, Fusarium oxysporum, Verticillium dahliae, Meloidogyne incognita, root-knot nematode, interactions, F-SP VASINFECTUM
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