Positional Cloning of a Gene for Nematode Resistance in Sugar Beet

Author:

Cai Daguang1,Kleine Michael1,Kifle Sirak1,Harloff Hans-Joachim1,Sandal Niels N.2,Marcker Kjeld A.2,Klein-Lankhorst René M.3,Salentijn Elma M. J.3,Lange Wouter3,Stiekema Willem J.3,Wyss Urs4,Grundler Florian M. W.4,Jung Christian1

Affiliation:

1. D. Cai, M. Kleine, S. Kifle, H.-J. Harloff, C. Jung, Institute of Crop Science and Plant Breeding, Christian-Albrechts-University of Kiel, Olshausenstrasse 40, D-24118 Kiel, Germany.

2. N. N. Sandal and K. A. Marcker, Laboratory of Gene Expression, Department of Molecular and Structural Biology, University of Aarhus, Gustav Wieds Vej 10, DK-8000 Aarhus, Denmark.

3. R. M. Klein-Lankhorst, E. M. J. Salentijn, W. Lange, W. J. Stiekema, DLO-Centre for Plant Breeding and Reproduction Research (CPRO-DLO), Droevendaalsesteeg 1, NL-6700 AA Wageningen, Netherlands.

4. U. Wyss and F. M. W. Grundler, Institute of Phytopathology, Christian-Albrechts-University of Kiel, Olshausenstrasse 40, D-24118 Kiel, Germany.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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