, Volume 71, Issue 4, pp 631–632

Hypersensitivity reaction of Brassica nigra L. (Cruciferae) kills eggs of Pieris butterflies (Lepidoptera: Pieridae)

  • A. M. Shapiro
  • J. E. DeVay
Short Communication


Some individual plants of the mustard Brassica nigra in lowland California kill eggs of the Crucifer-specialist herbivores Pieris rapae and P. napi by producing a necrotic zone at the base of the egg, thereby apparently desicating it. This is a typical hypersensitivity reaction, but to an atypical stimulus. The eggs can be “rescued” by maintaining them in a saturated atmosphere. Attempts to demonstrate a bacterial or fungal agent associated with the reaction were unsuccessful.

Key words

Hypersensitivity Pieris Brassica Herbivory Defense 


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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • A. M. Shapiro
    • 1
  • J. E. DeVay
    • 2
  1. 1.Department of ZoologyUniversity of CaliforniaDavisUSA
  2. 2.Department of Plant PathologyUniversity of CaliforniaDavisUSA

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