OVIPOSITION STIMULANTS AND DETERRENTS REGULATING DIFFERENTIAL ACCEPTANCE OF IBERIS-AMARA BY PIERIS-RAPAE AND P-NAPI-OLERACEA

被引:31
作者
HUANG, XP [1 ]
RENWICK, JAA [1 ]
SACHDEVGUPTA, K [1 ]
机构
[1] CORNELL UNIV, BOYCE THOMPSON INST PLANT RES, TOWER RD, ITHACA, NY 14853 USA
关键词
PIERIS-RAPAE; PIERIS-NAPI-OLERACEA; LEPIDOPTERA; PIERIDAE; IBERIS-AMARA; OVIPOSITION; STIMULANTS; DETERRENTS; GLUCOSINOLATES; GLUCOIBERIN; SINIGRIN; CUCURBITACINS;
D O I
10.1007/BF00982298
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Iberis amara (Cruciferae) contains both stimulants and deterrents that are involved in regulating oviposition by Pieris rapae and P. napi oleracea. The most active deterrents to P. rapae isolated from butanol extracts of the plant were found to be 2-O-beta-D-glucosyl cucurbitacin I and 2-O-beta-D-glucosyl cucurbitacin E. However, P. napi oleracea was behaviorally insensitive to these compounds and was only weakly deterred by other individual fractions of the butanol extract. Stimulant activity of the postbutanol water extract of I. amara was associated with glucosinolates. The most abundant of these was identified as sinigrin, and a relatively minor component was shown to be glucoiberin. The isolated sinigrin was more stimulatory to P. rapae than was the glucoiberin-containing fraction, but P. napi oleracea was stimulated as strongly by the glucoiberin fraction, even though the concentration of this compound was much lower. The contrasting responses of the two Pieris species to the deterrents and stimulants in I. amara can explain the differential acceptance of the plant by these butterflies.
引用
收藏
页码:1645 / 1663
页数:19
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