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Positional Cloning of a Gene for Nematode Resistance in Sugar Beet

Science  07 Feb 1997:
Vol. 275, Issue 5301, pp. 832-834
DOI: 10.1126/science.275.5301.832

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Abstract

The Hs1pro-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 Hs1pro-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 Hs1pro-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.

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