American Journal of Plant Sciences (2018) 9, 543-551
Jia Liu and Yoh-Ichi Matsubara (2018)
Interaction between allelochemicals and Fusarium root rot in asparagus seedlings cultured in vitro
American Journal of Plant Sciences 9 (4), 543-551
Abstract: The interaction between Fusarium root rot and 4 allelochemicals in asparagus seedlings was estimated in vitro to clarify the relationship between biotic and abiotic factors in asparagus decline. In in vitro culture of Fusarium oxysporum f. sp. asparagi (Foa) with or without addition of 4 allelochemicals (caffeic acid, ferulic acid, quercetin, malic acid; 0.01%, 0.1%, w/v) using Czapec-Dox media, Foa propagation was suppressed in all the treatments. The degree of suppression became higher in 0.1% than 0.01% among all the allelochemicals. As for the axenic culture of asparagus (Asparagus officinalis L., "Welcome") seedlings with the 4 allelochemicals, dry weight of both shoots and roots became lower compared to control in 0.1% and 0.01% of caffeic acid, 0.1% ferulic acid, 0.01% quercetin, only dry weight of shoots decreased in 0.1% malic acid. Two weeks after Foa inoculation with Foa-cultured PDA cubes in vitro, incidence of Fusarium root rot reached 100% in most of the plots. The severity of root rot increased in 0.01% and 0.1% caffeic acid, 0.1% ferulic acid, 0.1% malic acid compared to control. From these results, the 4 allelochemicals used in this study are supposed to suppress asparagus growth, and such growth reduction might enhance the disease severity of Fusarium root rot as an indirect effect. In addition, such effect might differ with the allelochemicals and concentrations in asparagus.
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Fusarium oxysporum f.sp. asparagi | Asparagus (Asparagus officinalis) | Japan |
