caa a22 4500 445869828 CHVBK 20180317145508.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s11101-010-9181-1 doi (NATIONALLICENCE)springer-10.1007/s11101-010-9181-1 Macel Mirka Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Boterhoeksestraat 48, 6666 GA, Heteren, The Netherlands aut Attract and deter: a dual role for pyrrolizidine alkaloids in plant-insect interactions [Elektronische Daten] [Mirka Macel] Pyrrolizidine alkaloids (PAs) are the major defense compounds of plants in the Senecio genus. Here I will review the effects of PAs in Senecio on the preference and performance of specialist and generalist insect herbivores. Specialist herbivores have evolved adaptation to PAs in their host plant. They can use the alkaloids as cue to find their host plant and often they sequester PAs for their own defense against predators. Generalists, on the other hand, can be deterred by PAs. PAs can also affect survival of generalist herbivores. Usually generalist insects avoid feeding on young Senecio leaves, which contain a high concentration of alkaloids. Structurally related PAs can differ in their effects on insect herbivores, some are more toxic than others. The differences in effects of PAs on specialist and generalists could lead to opposing selection on PAs, which may maintain the genetic diversity in PA concentration and composition in Senecio species. The Author(s), 2010 Evolution nationallicence Performance nationallicence Preference nationallicence Tyria jacobaeae nationallicence Jacobaea vulgaris nationallicence Phytochemistry Reviews Springer Netherlands 10/1(2011-03-01), 75-82 1568-7767 10:1<75 2011 10 11101 https://doi.org/10.1007/s11101-010-9181-1 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11101-010-9181-1 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Macel Mirka Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Boterhoeksestraat 48, 6666 GA, Heteren, The Netherlands aut NATIONALLICENCE 773 0- Phytochemistry Reviews Springer Netherlands 10/1(2011-03-01), 75-82 1568-7767 10:1<75 2011 10 11101 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer