Genetics of the Ability of the Hessian Fly, Mayetiola destructor1, to Survive on Wheats Having Different Genes for Resistance2

Hatchett, J. H.; Gallun, R. L.

doi:10.1093/aesa/63.5.1400

Cited by 221 publications

(129 citation statements)

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“…The gene-for-gene relationship discovered in the flax-rust system by Flor (1956), where each of the 26 rust-resistance genes in the flax has a counteracting virulence gene in the rust, is a striking example. Gene-for-gene relationships have been found in other plant-pathogen systems, mostly involving crop plants (Silvertown and Doust, 1993), and are also seen in plant-herbivore systems, such as the interaction between resistance genes in wheat and virulence genes in the hessian fly Mayetiola destructor (Hatchett and Gallun, 1970;Gallun, 1977).…”

Section: General Introductionmentioning

confidence: 99%

Evolution of Defence Portfolios in Exploiter–Victim Systems

2007

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Some organisms maintain a battery of defensive strategies against their exploiters (predators, parasites or parasitoids), while others fail to employ a defence that seems obvious. In this paper, we shall investigate the circumstances under which defence strategies might be expected to evolve. Brood parasites and their hosts provide our main motivation, and we shall discuss why the reed warbler Acrocephalus scirpaceus has evolved an egg-rejection but not a chick-rejection strategy as a defence against the common (Eurasian) cuckoo Cuculus canorus, while the superb fairy-wren Malurus cyaneus has evolved a chick-rejection but not an egg-rejection strategy as a defence against Horsfield's bronze-cuckoo Chrysococcyx basalis. We suggest that the answers lie in strategy-blocking, where one strategy (the blocking strategy) prevents the appearance of another (the blocked strategy) that would be adaptive in its absence. This may be common in exploitervictim systems.

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Section: General Introductionmentioning

confidence: 99%

Evolution of Defence Portfolios in Exploiter–Victim Systems

2007

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“…The first-instar Hessian fly larvae have specialized mandibles that are capable of injecting salivary fluids into cells at the surface of wheat leaf sheaths and meristems (Hatchett et al, 1990). Resistance to Hessian fly attack is achieved through R gene-mediated resistance (Hatchett and Gallun, 1970). So far, 32 distinct Hessian fly resistance genes have been identified (Williams et al, 2003;Sardesai et al, 2005a).…”

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confidence: 99%

Functional Characterization of HFR1, a High-MannoseN-Glycan-Specific Wheat Lectin Induced by Hessian Fly Larvae

et al. 2008

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We previously cloned and characterized a novel jacalin-like lectin gene from wheat (Triticum aestivum) plants that responds to infestation by Hessian fly (Mayetiola destructor) larvae, a major dipteran pest of this crop. The infested resistant plants accumulated higher levels of Hfr-1 (for Hessian fly-responsive gene 1) transcripts compared with uninfested or susceptible plants. Here, we characterize the soluble and active recombinant His 6 -HFR1 protein isolated from Escherichia coli. Functional characterization of the protein using hemagglutination assays revealed lectin activity. Glycan microarray-binding assays indicated strong affinity of His 6 -HFR1 to Mana1-6(Mana1-3)Man trisaccharide structures. Resistant wheat plants accumulated high levels of HFR1 at the larval feeding sites, as revealed by immunodetection, but the avirulent larvae were deterred from feeding and consumed only small amounts of the lectin. Behavioral studies revealed that avirulent Hessian fly larvae on resistant plants exhibited prolonged searching and writhing behaviors as they unsuccessfully attempted to establish feeding sites. During His 6 -HFR1 feeding bioassays, Drosophila melanogaster larvae experienced significant delays in growth and pupation, while percentage mortality increased with progressively higher concentrations of His 6 -HFR1 in the diet. Thus, HFR1 is an antinutrient to dipteran larvae and may play a significant role in deterring Hessian fly larvae from feeding on resistant wheat plants.

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“…However, the search for species at stages preceding speciation has been more successful. Polymorphisms maintained by disruptive selection on genetically variable host plants (Hatchett and Gallun, 1970), host selection based on larval conditioning (Craighead, 1921;Cushing, 1941;Huette! and Bush, 1972;Knerer and Atwood, 1973;Wiklund, 1974;Phillips and Barnes, , Present address: Department of Biological Sciences, State University of New York, Binghamton, New York 13901.…”

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confidence: 99%