| relationships between sulfonylurea herbicide treatment of host plants and the performance of herbivorous insects. | previous work had shown that the sulfonylurea herbicide chlorsulfuron affected the survival of a herbivorous insect species dwelling on a sub-lethally exposed host plant. further experiments have been conducted to establish whether this negative effect was a single occurrence characteristics for the specific insect-plant interaction and the specific herbicide tested. three insect-plant interactions were tested for the effects of selected sulfonylurea herbicides, i.e. metsulfuron-methyl, chlorsul ... | 2001 | 11802605 |
| beetles do it differently: two stereodivergent cyclisation modes in iridoid-producing leaf-beetle larvae. | larvae of the chrysomelina species phaedon cochleariae, hydrothassa marginella, phratora vulgatissima, gastrophysa viridula, gastrophysa atrocyanea, gastrophysa cyanea and gastrophysa polygoni produce the iridoid chrysomelidial (1) to defend themselves against predators. feeding experiments with a deuterated precursor ([(2)h(5)]8-hydroxygeraniol 9) and in vitro isotope exchange experiments with defensive secretion in (2)h(2)o revealed differences in the cyclisation of the ultimate precursor 8-ox ... | 2013 | 23341265 |
| gastrophysa polygoni herbivory on rumex confertus: single leaf voc induction and dose dependent herbivore attraction/repellence to individual compounds. | we report large induction (>65(fold) increases) of volatile organic compounds (vocs) emitted from a single leaf of the invasive weed mossy sorrel, rumex confertus willd. (polygonaceae), by herbivory of the dock leaf beetle, gastrophysa polygoni l. (coleoptera: chrysomelidae). the r. confertus voc blend induced by g. polygoni herbivory included two green leaf volatiles ((z)-3-hexenal, (z)-3-hexen-1-yl acetate) and three terpenes (linalool, ß-caryophyllene, (e)-ß-farnesene). uninjured leaves produ ... | 2011 | 21824679 |