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Hypersensitive response of wheat to the Hessian fly
Author(s) -
Grover Paul B.
Publication year - 1995
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1995.tb01902.x
Subject(s) - biology , insect , cecidomyiidae , hypersensitive response , host (biology) , parasitism , resistance (ecology) , larva , botany , hessian matrix , agronomy , ecology , gene , plant disease resistance , genetics , mathematics
Hessian fly Mayetiola destructor (Say) larvae are able to obtain food from their host plant without inflicting mechanical damage to the plant surface, apparently by secreting substances which elicit release of nutrients from plant cells surrounding the feeding site. Cells of fully susceptible plants retain their normal appearances, while in resistant plants extensive areas of cellular collapse occur. These responses indicate that hypersensitivity is the basis of wheat's resistance to the Hessian fly. The fly's feeding mechanism more closely resembles that of a pathogen than of a phytophagous insect; correspondingly, both the genetic relationship and resistance mechanism of the host plant to the parasite are of the sorts commonly associated with bacterial and fungal pathogens.