Nancy A Keller

US Patent:

6627797, Sep 30, 2003

Filed:

Mar 16, 2001

Appl. No.:

09/810268

Inventors:

Jon Duvick - Des Moines IA
Joyce R. Maddox - Omaha NE
Nancy P. Keller - Madison WI

Assignee:

The Texas AM University System - College Station TX
Pioneer Hi-Bred International, Inc. - Des Moines IA

International Classification:

C12N 1509

US Classification:

800279, 800278, 800287, 800298, 800295, 800312, 800314, 800322, 8003171, 8003173, 800306, 435419, 435468, 4353201, 435430, 536 232, 536 236, 536 241, 536 245

Abstract:

The invention provides isolated maize lipoxygenase nucleic acids and their encoded proteins. The present invention provides methods and compositions relating to altering lipoxygenase concentration and/or composition of plants. The invention further provides recombinant expression cassettes, host cells, and transgenic plants.

US Patent:

59426616, Aug 24, 1999

Filed:

Aug 19, 1998

Appl. No.:

9/136573

Inventors:

Nancy P. Keller - College Station TX

Assignee:

The Texas A&M University System - College Station TX

International Classification:

C12N 1529
C12N 1582
A01H 500
A01H 400

US Classification:

800298

Abstract:

A method of inhibiting the production of mycotoxins of fungus, such as aflatoxin-producing and sterigmatocystin-producing fungi, in plants susceptible to contamination by such mycotoxins consists of introducing into the susceptible plant a gene encoding for lipoxygenase pathway enzyme of the mycotoxin. Exemplary of the lipoxygenase pathway enzymes are soybean lipoxygenase, allene oxidase, hydroperoxide lyase and hydroperoxide dehydratase. The resulting transgenic plant demonstrates substantial resistance to mycotoxin contamination of such fungus. Plants which are substantially resistant to mycotoxin contamination of Aspergillus spp. are further obtained by incorporating into mycotoxin susceptible plant antisense genes for the 9-hydroperoxide fatty acid producing lipoxygenases.

US Patent:

58441212, Dec 1, 1998

Filed:

Jan 19, 1996

Appl. No.:

8/582339

Inventors:

Nancy P. Keller - College Station TX

Assignee:

The Texas A & M University System - College Station TX

International Classification:

C12N 1500
C12N 1529
C12N 1582
A01H 400

US Classification:

800205

Abstract:

A method of inhibiting the production of mycotoxins of fungus, such as aflatoxin-producing and sterigmatocystin-producing fungi, in plants susceptible to contamination by such mycotoxins consists of introducing into the susceptible plant a gene encoding for lipoxygenase pathway enzyme of the mycotoxin. Exemplary of the lipoxygenase pathway enzymes are soybean lipoxygenase, allene oxidase, hydroperoxide lyase and hydroperoxide dehydratase. The resulting transgenic plant demonstrates substantial resistance to mycotoxin contamination of such fungus. Plants which are substantially resistant to mycotoxin contamination of Aspergillus spp. are further obtained by incorporating into mycotoxin susceptible plant antisense genes for the 9-hydroperoxide fatty acid producing lipoxygenases.