Patents by Inventor Cao-Guo Yu

Cao-Guo Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8071736
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, nucleic acid sequences encoding insect protoxins modified to comprise at least one proteolytic activation site that is sensitive to a plant protease or an insect gut protease are provided. Cleavage of the modified protoxin at the proteolytic activation site by a protease produces an active insect toxin. Methods of using the modified insect protoxin nucleic acid sequences and the polypeptides they encode to protect a plant from an insect pest are provided. Particular embodiments of the invention further provide modified insect protoxin compositions and formulations, expression cassettes, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: December 6, 2011
    Assignees: Pioneer Hi-Bred International, Inc., E.I. Dupont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Rafael Herrmann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu
  • Patent number: 7910807
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, nucleic acid sequences encoding insect protoxins modified to comprise at least one proteolytic activation site that is sensitive to a plant protease or an insect gut protease are provided. Cleavage of the modified protoxin at the proteolytic activation site by a protease produces an active insect toxin. Methods of using the modified insect protoxin nucleic acid sequences and the polypeptides they encode to protect a plant from an insect pest are provided. Particular embodiments of the invention further provide modified insect protoxin compositions and formulations, expression cassettes, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: March 22, 2011
    Assignees: Pioneer Hi-Bred International, Inc., E.I. DuPont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Rafael Herrmann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu
  • Patent number: 7803993
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, novel polynucleotides and the pesticidal polypeptides they encode are provided. Methods of using the novel polynucleotides and pesticidal polypeptides of the invention to protect a plant from an insect pest are further provided. Particular embodiments of the invention provide pesticidal compositions and formulations, DNA constructs, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: September 28, 2010
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Billy F. McCutchen, Cao Guo Yu
  • Patent number: 7772465
    Abstract: The invention provides nucleic acids, and variants and fragments thereof, obtained from strains of Bacillus thuringiensis encoding polypeptides having pesticidal activity against insect pests, including Lepidoptera. Particular embodiments of the invention provide isolated nucleic acids encoding pesticidal proteins, pesticidal compositions, DNA constructs, and transformed microorganisms and plants comprising a nucleic acid of the embodiments. These compositions find use in methods for controlling pests, especially plant pests.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: August 10, 2010
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andre R. Abad, Hua Dong, Sue B. Lo, Xiaomei Shi, Cao Guo Yu
  • Publication number: 20090317891
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, nucleic acid sequences encoding insect protoxins modified to comprise at least one proteolytic activation site that is sensitive to a plant protease or an insect gut protease are provided. Cleavage of the modified protoxin at the proteolytic activation site by a protease produces an active insect toxin. Methods of using the modified insect protoxin nucleic acid sequences and the polypeptides they encode to protect a plant from an insect pest are provided. Particular embodiments of the invention further provide modified insect protoxin compositions and formulations, expression cassettes, and transformed plants, plant cells, and seeds.
    Type: Application
    Filed: July 30, 2009
    Publication date: December 24, 2009
    Applicants: Pioneer Hi-Bred International, Inc., E.I. du PONT de NEMOURS and COMPANY
    Inventors: Andre Abad, Ronald D. Flannagan, Rafael Hermann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu
  • Patent number: 7629449
    Abstract: In particular aspects of the invention, nucleic acid molecules encoding novel proteases identified in the midgut of Diabrotica virgfera virgfera (i.e., western corn rootworm) are provided. The nucleotide sequences encode novel cysteine proteases that belong to the cathepsin L-like subfamily of proteases. Variants and fragments of the nucleotide sequences that encode polypeptide sequences that possess proteolytic activity are further disclosed. Methods of using the nucleic acid sequences that encode novel proteases to protect a plant from an insect pest are provided. Particular embodiments also provide vectors, expression cassettes and transformed host cells comprising a protease nucleic acid of the invention.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: December 8, 2009
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Rafael Herrmann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu
  • Publication number: 20090214509
    Abstract: The invention provides nucleic acids, and variants and fragments thereof, obtained from strains of Bacillus thuringiensis encoding polypeptides having pesticidal activity against insect pests, including Lepidoptera. Particular embodiments of the invention provide isolated nucleic acids encoding pesticidal proteins, pesticidal compositions, DNA constructs, and transformed microorganisms and plants comprising a nucleic acid of the embodiments. These compositions find use in methods for controlling pests, especially plant pests.
    Type: Application
    Filed: April 28, 2009
    Publication date: August 27, 2009
    Inventors: Andre R. Abad, Hua Dong, Sue B. Lo, Xiaomei Shi, Cao Guo Yu
  • Patent number: 7556936
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, nucleic acid sequences encoding insect protoxins modified to comprise at least one proteolytic activation site that is sensitive to a plant protease or an insect gut protease are provided. Cleavage of the modified protoxin at the proteolytic activation site by a protease produces an active insect toxin. Methods of using the modified insect protoxin nucleic acid sequences and the polypeptides they encode to protect a plant from an insect pest are provided. Particular embodiments of the invention further provide modified insect protoxin compositions and formulations, expression cassettes, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: July 7, 2009
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Rafael Herrmann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu
  • Publication number: 20090130672
    Abstract: Methods and compositions for identifying novel pesticidal gene homologues are provided. Specifically, the methods of the invention comprise systematically designing oligonucleotide primers that are specific for a pesticidal gene of interest and performing successive rounds of PCR amplification of nucleic acid material from a microorganism, particularly a Bacillus thuringiensis strain, to identify novel homologues of known pesticidal genes. Oligonucleotide primers that can be used to practice the present methods are further disclosed.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 21, 2009
    Applicants: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Bin Hu, Cao Guo Yu
  • Publication number: 20090075287
    Abstract: Methods and compositions for identifying novel pesticidal gene homologues are provided. Specifically, the methods of the invention comprise systematically designing oligonucleotide primers that are specific for a pesticidal gene of interest and performing successive rounds of PCR amplification of nucleic acid material from a microorganism, particularly a Bacillus thuringiensis strain, to identify novel homologues of known pesticidal genes. Oligonucleotide primers that can be used to practice the present methods are further disclosed.
    Type: Application
    Filed: September 11, 2008
    Publication date: March 19, 2009
    Applicants: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Bin Hu, Billy F. McCutchen, Xiaofeng Sean Yang, Cao Guo Yu
  • Patent number: 7491869
    Abstract: Methods of creating and enhancing insect resistance in plants by introducing non-plant lipases into plants are provided. Plants with enhanced insect resistance and seed from plants thereof are provided. DNA sequences encoding insecticidal lipases and insecticidal lipase gene products that are useful in the practice of this invention are also provided. The compositions and methods of the invention may be used in a variety of agricultural systems for controlling pests, including propagating lineages of insect-resistant crops and targeting expression of these insecticidal lipases to plant organs that are particularly susceptible to infestation, such as roots and leaves.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: February 17, 2009
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Billy F. McCutchen, James F. Wong, Cao Guo Yu
  • Patent number: 7491536
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, novel polynucleotides and the pesticidal polypeptides they encode are provided. Methods of using the novel polynucleotides and pesticidal polypeptides of the invention to protect a plant from an insect pest are further provided. Particular embodiments of the invention provide pesticidal compositions and formulations, DNA constructs, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 17, 2009
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Billy F. McCutchen, Cao Guo Yu
  • Patent number: 7476781
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, novel polynucleotides and the pesticidal polypeptides they encode are provided. Methods of using the novel polynucleotides and pesticidal polypeptides of the invention to protect a plant from an insect pest are further provided. Particular embodiments of the invention provide pesticidal compositions and formulations, DNA constructs, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: January 13, 2009
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Billy F. McCutchen, Cao Guo Yu
  • Publication number: 20090005306
    Abstract: The invention provides nucleic acids, and variants and fragments thereof, obtained from strains of Bacillus thuringiensis encoding polypeptides having pesticidal activity against insect pests, including Lepidoptera. Particular embodiments of the invention provide isolated nucleic acids encoding pesticidal proteins, pesticidal compositions, DNA constructs, and transformed microorganisms and plants comprising a nucleic acid of the embodiments. These compositions find use in methods for controlling pests, especially plant pests.
    Type: Application
    Filed: December 17, 2007
    Publication date: January 1, 2009
    Inventors: Andre R. Abad, Hua Dong, Sue B. Lo, Xiaomei Shi, Cao Guo Yu
  • Patent number: 7452700
    Abstract: Methods and compositions for identifying novel pesticidal gene homologues are provided. Specifically, the methods of the invention comprise systematically designing oligonucleotide primers that are specific for a pesticidal gene of interest and performing successive rounds of PCR amplification of nucleic acid material from a microorganism, particularly a Bacillus thuringiensis strain, to identify novel homologues of known pesticidal genes. Oligonucleotide primers that can be used to practice the present methods are further disclosed.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: November 18, 2008
    Assignees: Pioneer Hi-Bred International, Inc., E.I. duPont de Nemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Bin Hu, Billy F. McCutchen, Xiaofeng Sean Yang, Cao Guo Yu
  • Patent number: 7449552
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, novel polynucleotides and the pesticidal polypeptides they encode are provided. Methods of using the novel polynucleotides and pesticidal polypeptides of the invention to protect a plant from an insect pest are further provided. Particular embodiments of the invention provide pesticidal compositions and formulations, DNA constructs, and transformed plants, plant cells, and seeds.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: November 11, 2008
    Assignees: Pioneer Hi-Bred International, Inc., E.I. duPont deNemours and Company
    Inventors: Andre R. Abad, Ronald D. Flannagan, Billy F. McCutchen, Cao Guo Yu
  • Patent number: 7423197
    Abstract: Methods of creating and enhancing insect resistance in plants by introducing non-plant lipases into plants are provided. Plants with enhanced insect resistance and seed from plants thereof are provided. DNA sequences encoding insecticidal lipases and insecticidal lipase gene products that are useful in the practice of this invention are also provided. The compositions and methods of the invention may be used in a variety of agricultural systems for controlling pests, including propagating lineages of insect-resistant crops and targeting expression of these insecticidal lipases to plant organs that are particularly susceptible to infestation, such as roots and leaves.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: September 9, 2008
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Billy F. McCutchen, James F. Wong, Cao Guo Yu
  • Publication number: 20080200415
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, nucleic acid sequences encoding insect protoxins modified to comprise at least one proteolytic activation site that is sensitive to a plant protease or an insect gut protease are provided. Cleavage of the modified protoxin at the proteolytic activation site by a protease produces an active insect toxin. Methods of using the modified insect protoxin nucleic acid sequences and the polypeptides they encode to protect a plant from an insect pest are provided. Particular embodiments of the invention further provide modified insect protoxin compositions and formulations, expression cassettes, and transformed plants, plant cells, and seeds.
    Type: Application
    Filed: November 14, 2007
    Publication date: August 21, 2008
    Applicants: Pioneer Hi-Bred International, Inc., E.I. du PONT de NEMOURS and COMPANY
    Inventors: Andre Abad, Ronald D. Flannagan, Rafael Herrmann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu
  • Patent number: 7414174
    Abstract: Methods of creating and enhancing insect resistance in plants by introducing non-plant lipases into plants are provided. Plants with enhanced insect resistance and seed from plants thereof are provided. DNA sequences encoding insecticidal lipases and insecticidal lipase gene products that are useful in the practice of this invention are also provided. The compositions and methods of the invention may be used in a variety of agricultural systems for controlling pests, including propagating lineages of insect-resistant crops and targeting expression of these insecticidal lipases to plant organs that are particularly susceptible to infestation, such as roots and leaves.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: August 19, 2008
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Andre R. Abad, Billy F. McCutchen, James F. Wong, Cao Guo Yu
  • Publication number: 20080124799
    Abstract: Compositions and methods for protecting a plant from an insect pest are provided. In particular, nucleic acid sequences encoding insect protoxins modified to comprise at least one proteolytic activation site that is sensitive to a plant protease or an insect gut protease are provided. Cleavage of the modified protoxin at the proteolytic activation site by a protease produces an active insect toxin. Methods of using the modified insect protoxin nucleic acid sequences and the polypeptides they encode to protect a plant from an insect pest are provided. Particular embodiments of the invention further provide modified insect protoxin compositions and formulations, expression cassettes, and transformed plants, plant cells, and seeds.
    Type: Application
    Filed: December 4, 2007
    Publication date: May 29, 2008
    Applicants: Pioneer Hi-Bred International, Inc., E.I. du PONT de NEMOURS and COMPANY
    Inventors: Andre Abad, Ronald D. Flannagan, Rafael Herrmann, Albert L. Lu, Billy F. McCutchen, James K. Presnail, Janet A. Rice, James F. Wong, Cao-Guo Yu