Methods and compositions for controlling weeds

US7973218B2 · kind B2 · utility

Assignees

• PIONEER HI-BRED INTERNATIONAL, INC. · US
• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Billy F. McCutchen · College Station, US
• Timothy K. Chicoine · Mount Pleasant, US
• Jerry M. Green · Landenberg, US
• Christine B. Hazel · Port Deposit, US
• Donglong Liu · Johnston, US
• Kenneth A. Peeples · Wilmington, US
• David W. Saunders · Dallas Center, US

Key dates

• Filing date: Aug 22, 2006
• Grant date: Jul 5, 2011
• Expiry date: Nov 2, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A40/146
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

Methods and compositions are provided related to improved plants that are tolerant to more than one herbicide. Particularly, the invention provides plants that are tolerant of glyphosate and are tolerant to at least one ALS inhibitor, and methods of use thereof. The glyphosate/ALS inhibitor-tolerant plants comprise a polynucleotide that encodes a polypeptide that confers tolerance to glyphosate and a polynucleotide that encodes an ALS inhibitor-tolerant polypeptide. In specific embodiments, a plant of the invention expresses a GAT polypeptide and an HRA polypeptide. Methods to control weeds, improve plant yield, and increase transformation efficiencies are provided.