Journal of Nematology (2004) 36, 160-166
A.J. Palmateer, K.S. Lawrence, E. Van Santen and G. Morgan-Jones (2004)
Interaction of Rotylenchulus reniformis with seedling disease pathogens of cotton
Journal of Nematology 36 (2), 160-166
Abstract: The impact of 10 Fusarium species in concomitant association with Rotylenchulus reniformis on cotton seedling disease was examined under greenhouse conditions. In experiment 1, fungal treatments consisted of Fusarium chlamydosporum, F. equiseti, F. lateritium, F. moniliforme, F. oxysporum, F. oxysporum f.sp. vasinfectum, F. proliferatum, F. semitectum, F. solani and F. sporotrichioides, Rhizoctonia solani; and Thielaviopsis basicola. The experimental design was a 2 x 14 factorial consisting of the presence or absence of R. reniformis and the 12 fungal treatments plus two controls in autoclaved field soil. In experiment 2, the same fungal and nematode treatments were examined in autoclaved or non-autoclaved soil. This experimental design was a 2 x 2 x 14 factorial consisting of field or autoclaved soil, presence or absence of R. reniformis, and the 12 fungal treatments plus two controls. In both tests, Fusarium oxysporum f. sp. vasinfectum, F. solani, R. solani and T. basicola consistently displayed extensive root and hypocotyl necrosis that was more severe (P < 0.05) in the presence of R. reniformis. Soil treatment (autoclaved vs. non-autoclaved) influenced the impact of the Fusarium species on cotton seedling disease, with disease being more severe in the autoclaved soil. Rotylenchulus reniformis reproduction on cotton seedlings was greater in field soil compared to autoclaved soil (P < 0.05). This study suggests the importance of Fusarium species and R. reniformis in cotton seedling disease.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): A.J. Palmateer, Kathy S. Lawrence
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Rhizoctonia solani | Cotton (Gossypium) | U.S.A. (SE) | ||
| Neocosmospora solani | Cotton (Gossypium) | U.S.A. (SE) | ||
| Berkeleyomyces basicola | Cotton (Gossypium) | U.S.A. (SE) | ||
| Fusarium gossypinum | Cotton (Gossypium) | U.S.A. (SE) | ||
| Rotylenchulus reniformis | Cotton (Gossypium) | U.S.A. (SE) |
