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Effects of belowground biota on primary and secondary metabolites in Brassica oleracea

Wurst, S. and Langel, R. and Rodger, S. and Scheu, S. (2006) Effects of belowground biota on primary and secondary metabolites in Brassica oleracea. Chemoecology, 16, 69-73. ISSN 0937-7409.

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Official URL: http://dx.doi.org/10.1007/s00049-005-0328-2

Abstract

Soil organisms in direct and indirect interaction with plant roots affect aboveground herbivores, likely by inducing different plant responses. We investigated the combined effects of the root-knot nematode Meloidogyne incognita (in direct interaction with roots) and the endogeic earthworm Octolasion tyrtaeum (in indirect interaction with roots) on the performance of Brassica oleracea. Both earthworms and nematodes increased N uptake and shoot biomass of B. oleracea. Earthworm activity mobilized more soil N than litter N, and herbivory by nematodes tended to increase the microbial biomass in soil. Only the structural class of sulphur containing glucosinolates was affected by the soil organisms. Earthworms decreased glucoiberin concentrations in B. oleracea shoots. Glucoraphanin was affected by an interaction between earthworms and nematodes. [KEYWORDS: Brassica oleracea ; earthworms ; nematodes ; glucosinolates]

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:11885
Deposited On:15 Nov 2011 01:00
Last Modified:24 Apr 2012 16:31

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