Abstract: Nucleotide sequences mediating male fertility in plants are described, with DNA molecule and amino acid sequences set forth. Promoter sequences and their essential regions are also identified. The nucleotide sequences are useful in mediating male fertility in plants.

Abstract: A nucleic acid is provided that affects plant male fertility. Vectors, plant cells and plants comprising the sequence and methods of using same are described.

Abstract: Promoter sequences and their essential regions are identified which provide for male tissue-preferred expression. The nucleotide sequences are useful in mediating male fertility in plants.

Abstract: Nucleotide sequences mediating male fertility in plants are described, with DNA molecule and amino acid sequences set forth. Promoter sequences and their essential regions are also identified. The nucleotide sequences are useful in mediating male fertility in plants.

Abstract: Promoter sequences and their essential regions are identified which provide for male tissue-preferred expression. The nucleotide sequences are useful in mediating male fertility in plants.

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.

Abstract: Nucleotide sequences mediating male fertility in plants are described, with DNA molecule and amino acid sequences set forth. Promoter sequences and their essential regions are also identified. The nucleotide sequences are useful in mediating male fertility in plants.

Abstract: Nucleotide sequences mediating male fertility in plants are described, with DNA molecule and amino acid sequences set forth. Promoter sequences and their essential regions are also identified. The nucleotide sequences are useful in mediating male fertility in plants.

Abstract: The present invention provides compositions and methods for regulating expression of heterologous nucleotide sequences in a plant. Compositions are novel nucleotide sequences for pollen-preferred promoters isolated from a gene unit for SF3. A method for expressing a heterologous nucleotide sequence in a plant using the promoter sequences disclosed herein is provided. The method comprises transforming a plant cell to comprise a heterologous nucleotide sequence operably linked to one of the pollen-preferred promoters of the present invention and regenerating a stably transformed plant from the transformed plant cell.

Abstract: Sterile plants can be produced by increasing the endogenous concentration of a biotin-binding protein in the plant tissues, preferably those tissues that are critical to gamete formation or function. 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 a biotin-binding polypeptide. Preferred biotin-binding proteins have a low susceptibility to degradation, are readily digested, or have a low allergenic potential. Other preferred polypeptides are not highly detrimental to cellular viability, such that low level expression in cells other than those critical for gamete formation or function may be tolerated more easily. This allows the use of promoters having low level expression in non-targeted tissues, thus expanding the repertoire of promoters useful for affecting sterility. Methods for restoring fertility are disclosed.

Abstract: Nucleotide sequences mediating male fertility in plants are described, with DNA molecule and amino acid sequences set forth. Promoter sequences and their essential regions are also identified. The nucleotide sequences are useful in mediating male fertility in plants.

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.

Abstract: A timepiece includes interchangeable faces. The timepiece comprises a supportive structure, a face subassembly, and a clock mechanism. The face subassembly includes a backing with a front or outer surface and an inner surface, and a display with an inner surface and an outer surface. Markings may appear on the backing's outer surface or on the display. The display's outer surface can be decorated. First and second openings extend through the backing. An opening also extends through the display. One or more seats are attached near corners of the backing's outer surface. One or more connectors are attached near corners of the display's inner surface. The clock mechanism includes a clock motor with a shaft mounted on the backing's rear surface with the shaft extending through the backing's first opening. One or more hands are attached to an end of the shaft.

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.

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.

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.

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.

Abstract: A 94 base pair DNA regulatory element that confers anther tapetum-specific gene expression has been discovered, isolated, and characterized. Additional tapetum-specific regulatory elements have been developed by mutating the 94 base pair anther box. These tapetum-specific regulatory elements can be used to control the expression of a foreign gene that disrupts the function of tapetal cells. Similarly, the combination of at least one tapetum-specific regulatory element and at least one anther-specific regulatory element can be used to disrupt pollen production in anthers. Thus, the control of maize pollen production can be achieved by using a tapetum-specific regulatory element to produce male-sterile plants. Various methods can be used to restore male fertility in the F1 generation of such male-sterile plants.

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.

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.