Plant Physiol.
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Plant Physiology 83:248-250 (1987)
© 1987 American Society of Plant Biologists

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Molecular Biology and Gene Regulation

A Rapid Method to Test for Chloroplast DNA Involvement in Atrazine Resistance

Sheila McNally1, Priscilla Bettini2, Mireille Sevignac, Henry Darmency3, Jacques Gasquez and Michel Dron4

Laboratoire Biologie Moléculaire Végétale, Bat 430, Université Paris Sud 91405 Orsay, France, Laboratoire Malherbologie, Institut National de la Recherche Agronomique, Dijon, BV1540, 21034 Dijon Cedex, France

A point mutation in the chloroplast psbA gene at codon 264 resulting in an animo acid substitution (ser-gly) manifests itself as atrazine resistance in all recognized weed species studied to date. The single base substitution overlaps a highly conserved Mae1 restriction site which is present in susceptible but not in resistant plants. This restriction enzyme, recently commercialized, has been used to show that it is now possible to discriminate rapidly between the two biotypes without the need for DNA sequencing.

1 Present address: School of Botany, University of Dublin, Trinity College, Dublin 2, Ireland.

2 Present address: Dipartimento di Biologia Animale e Genetica, Via Romana 17, Firenze Italia.

3 Present address: Genetique et Physiologie du Developpement des Plantes, Centre National de la Recherce Scientifique, 91190, Gif/Yvette, France.

4 Present address: Plant Biology Laboratory, The Salk Institute, P.O. Box 85800, San Diego, CA 92138-9216.






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Copyright © 1987 by the American Society of Plant Biologists