Positional Cloning of a Gene for Nematode Resistance in Sugar Beet

Daguang Cai, Michael Kleine, Sirak Kifle, Hans‐Joachim Harloff, Niels Sandal, Kjeld A. Marcker, R. M. Klein-Lankhorst, Elma M. J. Salentijn, W. Lange, Willem J. Stiekema,

Science · 1997 · 481 citations · 22 references

Concepts

Abstract

The Hs1(pro-1) locus confers resistance to the beet cyst nematode (Heterodera schachtii Schmidt), a major pest in the cultivation of sugar beet (Beta vulgaris L.). The Hs1(pro-1) gene was cloned with the use of genome-specific satellite markers and chromosomal break-point analysis. Expression of the corresponding complementary DNA in a susceptible sugar beet conferred resistance to infection with the beet cyst nematode. The native Hs1(pro-1) gene, expressed in roots, encodes a 282-amino acid protein with imperfect leucine-rich repeats and a putative membrane-spanning segment, features similar to those of disease resistance genes previously cloned from higher plants.

References

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