Patents by Inventor Marc C. Albertsen

Marc C. Albertsen 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: 6297426
    Abstract: A controllably constitutively female sterile plant is provided. A gene critical to female fertility is identified and the native gene inactivated. The gene is cloned, linked to an inducible promoter and inserted into the plant. The result is a plant that is constitutively female sterile with inducible female fertility.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: October 2, 2001
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, Larry R. Beach, Gary A. Huffman, John Howard
  • Patent number: 6281348
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: August 28, 2001
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 6265640
    Abstract: Fertility in a plant is controlled by inactivating a gene critical to fertility, and inserting into the plant the criticial gene linked to an inducible promoter.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: July 24, 2001
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, Larry R. Beach, John Howard, Gary A. Huffman
  • Patent number: 6248935
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: June 19, 2001
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 6072102
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: June 6, 2000
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 6037523
    Abstract: The present invention relates to an isolated nucleic acid sequence encoding the Ms45 male tissue-preferred regulatory region. In one aspect this invention relates the use of this male tissue-preferred regulatory region in mediating fertility. An example of such use is the production of hybrid seed such as in a male sterility system. The Ms45 male tissue-preferred regulatory region can be operably linked with exogenous genes, such as those encoding cytotoxins, complementary nucleotidic units and inhibitory molecules. This invention also relates to plant cells, plant tissue and differentiated plants which contain the regulatory region in this invention.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: March 14, 2000
    Assignee: Pioneer Hi-Bred International
    Inventors: Marc C. Albertsen, Timothy W. Fox, Carl W. Garnaat, Gary A. Huffman, Timmy L. Kendall
  • Patent number: 5962769
    Abstract: Male-sterile plants can be produced by increasing the endogenous concentration of avidin in the plant tissues. This effect can be achieved by producing transgenic plants containing an expression vector in which a promoter is operably linked to a DNA sequence encoding avidin. Methods for restoring male fertility are disclosed. Additionally, methods for production of seeds with one or more desired grain traits are provided.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: October 5, 1999
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, John A. Howard, Sheila Maddock
  • Patent number: 5859341
    Abstract: Fertility in a plant is controlled by inactivating a gene critical to fertility, and inserting into the plant the criticial gene linked to an inducible promoter.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 12, 1999
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, Larry R. Beach, John Howard, Gary A. Huffman
  • Patent number: 5850014
    Abstract: Fertility in a plant is controlled by inactivating a gene critical to fertility, and inserting into the plant the critical gene linked to an inducible promoter.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 15, 1998
    Assignee: Pioneer Hi-Bred International
    Inventors: Marc C. Albertsen, Larry R. Beach, John Howard, Gary A. Huffman
  • Patent number: 5837851
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 17, 1998
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5824524
    Abstract: Fertility in a plant is controlled by inactivating a gene critical to fertility, and inserting into the plant the criticial gene linked to an inducible promoter.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 20, 1998
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, Larry R. Beach, John Howard, Gary A. Huffman
  • Patent number: 5795753
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 18, 1998
    Assignee: Pioneer Hi-Bred International Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5792853
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 11, 1998
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5763243
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant reversibly male-sterile. In particular, the present invention relates to the use of dominant negative genes and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene. The invention also relates to novel DNA sequences which exhibit the ability to serve as anther-specific promoters in plants.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 9, 1998
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5750868
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and structural genes capable of acting in a cascading fashion to produce a reversible effect on a plant phenotype. A first genetic construct comprising (i) an operator that is capable of controlling expression of a dominant negative gene, (ii) a dominant negative gene that, when expressed in a plant disrupts pollen formation or function, (iii) a tissue specific promoter that regulates the expression of a gene encoding a DNA-binding protein which binds to the operator and activates transcription, and (iv) a gene encoding a DNA binding region and an activating domain, causes male sterility in a plant. In particular, the present invention relates to the use of a DAM-methylase gene as a dominant negative gene and an anther-specific promoter. Male sterility is reversed by incorporation into a plant of a second genetic construct which represses the dominant negative gene.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: May 12, 1998
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5689049
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant male-sterile. In particular, the present invention relates to the use of an anther-specific promoter, designated 5126, and its operable linkage to a dominant negative gene, more particularly an exogenous methylase gene or DAM methylase gene, to achieve male sterility.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 18, 1997
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5689051
    Abstract: Plant development can be altered by transforming a plant with a genetic construct that includes regulatory elements and DNA sequences capable of acting in a fashion to inhibit pollen formation or function, thus rendering the transformed plant male-sterile. In particular, the present invention relates to an isolated DNA molecule comprising an anther-specific promoter, designated 5126, its operable linkage to a DNA sequence encoding a gene product and transgenic plants comprising said DNA. More particularly the gene product linked to promoter 5126 disrupts the function or formation of pollen.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 18, 1997
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Andrew M. Cigan, Marc C. Albertsen
  • Patent number: 5478369
    Abstract: Nucleotide sequences mediating male fertility in plants are described, with DNA molecule and amino acid sequences set forth. Use of the nucleotide sequences to mediate fertility in plants is also described. In one such method, an inducible promoter is used to regulate expression of the DNA molecule. The control sequences are modified so that it is normally "off" and as a result the plants are male sterile. When it is desired to reproduce the male sterile plants, male fertility is restored by treating the plants with a non-phytotoxic chemical which induces expression of the critical gene.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: December 26, 1995
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, Larry R. Beach, John Howard, Gary A. Huffman
  • Patent number: 5432068
    Abstract: An inducible promoter is used to regulate expression of a gene which is known to be critical to male fertility. The selected gene's control sequences are modified so that it is normally "off" and as a result the plants are male sterile. When it is desired to reproduce the male sterile plants, male fertility is restored by treating the plants with a non-phytotoxic chemical which induces expression of the critical gene. A critical gene is one which affects flavonol production and in particular compounds of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.7, and R.sub.8, are hydrogen, hydroxyl or alkoxy having from 1 to 4 carbon atoms. Particularly preferred flavonols include galangin, kaempferol, iso-rhamnetin, quercetin and morin.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: July 11, 1995
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Marc C. Albertsen, Larry R. Beach, John Howard, Gary A. Huffman, Loverine Taylor