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A Lectin-Like Wheat Gene Responds Systemically to Attempted Feeding by Avirulent First-Instar Hessian Fly Larvae

A Lectin-Like Wheat Gene Responds Systemically to Attempted Feeding by Avirulent First-Instar... Through gene-for-gene interactions, wheat plants respond to specific biotypes of Hessian fly upon the initiation of first-instar larval feeding. Leaves of plants containing the H9 resistance gene responded to avirulent biotype L larvae with rapid changes in the levels of several mRNA transcripts and initiation of an incompatible interaction. A low-copy gene, Hfr-1 (Hessian fly-response gene 1), responded with increased mRNA levels for two days before returning to preinfestation levels by day five. Hfr-1 mRNA was constitutively expressed in uninfested control plants as well as in plants infested with virulent larvae. The cDNA sequence was similar to a maize gene encoding a β-glucosidase aggregating factor (BGAF), to jacalin-like mannose-binding lectins, and to several plant genes that respond to microbial infections. The potential roles of Hfr-1 in defending wheat against Hessian fly damage are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Chemical Ecology Springer Journals

A Lectin-Like Wheat Gene Responds Systemically to Attempted Feeding by Avirulent First-Instar Hessian Fly Larvae

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References (57)

Publisher
Springer Journals
Copyright
Copyright © 2002 by Plenum Publishing Corporation
Subject
Life Sciences; Physical Chemistry; Agriculture; Ecology; Biological Microscopy
ISSN
0098-0331
eISSN
1573-1561
DOI
10.1023/A:1016200619766
Publisher site
See Article on Publisher Site

Abstract

Through gene-for-gene interactions, wheat plants respond to specific biotypes of Hessian fly upon the initiation of first-instar larval feeding. Leaves of plants containing the H9 resistance gene responded to avirulent biotype L larvae with rapid changes in the levels of several mRNA transcripts and initiation of an incompatible interaction. A low-copy gene, Hfr-1 (Hessian fly-response gene 1), responded with increased mRNA levels for two days before returning to preinfestation levels by day five. Hfr-1 mRNA was constitutively expressed in uninfested control plants as well as in plants infested with virulent larvae. The cDNA sequence was similar to a maize gene encoding a β-glucosidase aggregating factor (BGAF), to jacalin-like mannose-binding lectins, and to several plant genes that respond to microbial infections. The potential roles of Hfr-1 in defending wheat against Hessian fly damage are discussed.

Journal

Journal of Chemical EcologySpringer Journals

Published: Oct 12, 2004

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