caa a22 4500 467889597 CHVBK 20180406152744.0 cr unu---uuuuu 170328e20060301xx s 000 0 eng 10.1007/s00049-005-0323-7 doi (NATIONALLICENCE)springer-10.1007/s00049-005-0323-7 Local and systemic induced responses to cabbage root fly larvae ( Delia radicum ) in Brassica nigra and B. oleracea [Elektronische Daten] [Nicole Dam, Ciska Raaijmakers] Summary.: Feeding by belowground herbivores may induce systemic changes in shoot defence levels that affect the performance of above ground herbivores and higher trophic levels. In this paper two wild Brassica species, B. nigra and B. oleracea were experimentally infested with 10 larvae of the cabbage root fly, Delia radicum. Plant dry masses and glucosinolate levels in shoots, main roots, and fine roots were determined at 3, 7, 12 and 14 days after infestation and compared to those of control plants. The systemic response in the leaves differed between plant species. In B. nigra shoot glucosinolate levels in D. radicum infested plants steadily increased with time until they were almost twice those of controls 14 days after infestation. B. oleracea plants infested with D. radicum did not show significant changes in shoot glucosinolate levels within 14 days, which may be due to the unexpected poorer performance of D. radicum on this species. Both plant species showed a local increase in indole glucosinolates in the main roots, which are the preferred feeding site of D. radicum larvae. B. oleracea plants however showed a stronger (1.9 - 4.7 times) increase in indole glucosinolate levels than B. nigra (1.5 - 2.6 times). The increase in indole glucosinolates in B. nigra main roots, was counterbalanced by a significant decrease in aromatic glucosinolate levels. These differences in local responses to D. radicum feeding between the two species may have contributed to the slower growth rates of the larvae on B. oleracea. D. radicum feeding did not result in altered glucosinolate levels in the fine roots in either plant species. The differences in glucosinolate induction patterns between the summer annual B. nigra and the perennial B. oleracea are discussed in the light of their different life histories. Birkhäuser Verlag, Basel, 2005 Above-belowground interactions nationallicence root herbivores nationallicence induced responses nationallicence Brassica oleracea nationallicence Brassica nigra nationallicence Delia radicum nationallicence Dam Nicole Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 40, 6666 ZG, Heteren, The Netherlands aut Raaijmakers Ciska Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 40, 6666 ZG, Heteren, The Netherlands aut CHEMOECOLOGY Birkhäuser-Verlag; www.birkhauser.ch 16/1(2006-03-01), 17-24 0937-7409 16:1<17 2006 16 49 https://doi.org/10.1007/s00049-005-0323-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00049-005-0323-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dam Nicole Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 40, 6666 ZG, Heteren, The Netherlands aut NATIONALLICENCE 700 1- Raaijmakers Ciska Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 40, 6666 ZG, Heteren, The Netherlands aut NATIONALLICENCE 773 0- CHEMOECOLOGY Birkhäuser-Verlag; www.birkhauser.ch 16/1(2006-03-01), 17-24 0937-7409 16:1<17 2006 16 49 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer