The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2014
Filed:
Apr. 29, 2008
Timothy Robert Hawkes, Bracknell, GB;
Glynn Mitchell, Bracknell, GB;
Stephen Thomas Hadfield, Bracknell, GB;
Paul Anthony Thompson, Bracknell, GB;
Russell Viner, Bracknell, GB;
Yan Zhang, Apex, NC (US);
Timothy Robert Hawkes, Bracknell, GB;
Glynn Mitchell, Bracknell, GB;
Stephen Thomas Hadfield, Bracknell, GB;
Paul Anthony Thompson, Bracknell, GB;
Russell Viner, Bracknell, GB;
Yan Zhang, Apex, NC (US);
Syngenta Limited, Guildford, Surrey, GB;
Abstract
A method of producing male or female sterile plants comprising the steps of transforming plant material with a polynucleotide which encodes at least one enzyme which reacts with a non-phytotoxic substance to produce a phytotoxic one, and regenerating the thus transformed material into a plant, wherein the said non-phytotoxic substance is applied to the plant up to the time of male or female gamete formation and/or maturation, so that the non-phytotoxic substance provides for the production of a phytotoxic one which selectively prevents the formation of or otherwise renders the said gametes non-functional, wherein the enzyme is expressed preferentially in either male or female reproductive structures, characterized in that (i) the non-phytotoxic substance is a D-alpha amino acid, and (ii) the enzyme is a D-amino acid oxidase.