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

TY - JOUR

T1 - Effects of belowground biota on primary and secondary metabolites in Brassica oleracea

AU - Wurst, S.

AU - Langel, R.

AU - Rodger, S.

AU - Scheu, S.

N1 - Reporting year: 2006 Metis note: 3814;CTE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs2006/Wurst_ea_3814.pdf

PY - 2006

Y1 - 2006

N2 - 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]

AB - 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]

U2 - 10.1007/s00049-005-0328-2

DO - 10.1007/s00049-005-0328-2

M3 - Article

SN - 0937-7409

VL - 16

SP - 69

EP - 73

JO - Chemoecology

JF - Chemoecology

IS - 1

ER -