摘要:
Provided are methods, vectors and gene constructs for enhancing expression of a recombinant nucleic acid sequence in transgenic plants and plant tissues. According to the present invention, nucleic acid sequences are obtained and/or derived from the 3′ untranslated regions of genes encoding ubiquitin proteins and engineered to flank respective portions of a selected coding region of a vector. The vector construct may be introduced into plants and/or plant tissues through conventional or gene targeting procedures, resulting in enhanced expression of the selected coding region. In some embodiments, the selected coding region is a chimeric gene or gene fragment expressing one or more proteins known to impart a level of insecticidal activity to a transgenic plant and/or plant tissue.
摘要:
The Zea mays c.v . B73 Ubiquitin-1 ( Z. mays c.v . B73 Ubi-1) promoter drives high levels of constitutive transgene expression in plants. Repeated use of the same Z. mays c.v. B73 Ubi-1 promoter in multi-gene constructs may also lead to gene silencing, thereby making transgenic products less efficacious. Provided are gene regulatory promoter elements, constructs, and methods for expressing a transgene in plant cells and/or plant tissues using gene regulatory elements from the Ubi-1 promoter of a different Zea species, Z . luxurians v1.
摘要:
The Zea mays c.v. B73 Ubiquitin-1 (Z. mays c.v. B73 Ubi-1) promoter drives high levels of constitutive transgene expression in plants. Repeated use of the same Z. mays c.v. B73 Ubi-1 promoter in multi-gene constructs may also lead to gene silencing, thereby making transgenic products less efficacious. Provided are gene regulatory promoter elements, constructs, and methods for expressing a transgene in plant cells and/or plant tissues using gene regulatory elements from the Ubi-1 promoter of a different Zea species , Z. luxurians v2.
摘要:
Provided are constructs and methods for expressing multiple genes in plant cells and/or plant tissues. The constructs provided comprise at least one bi-directional promoter linked to multiple gene expression cassettes, wherein the bi-directional promoter comprises a functional promoter nucleotide sequence from Sugar Cane Bacilliform Virus promoter. In some embodiments, the constructs and methods provided employs a bi-directional promoter based on a minimal core promoter element from a Zea mays Ubiquitin-1 gene, or a functional equivalent thereof, and nucleotide sequence elements from a Sugar Cane Bacilliform Virus promoter. In some embodiments, the constructs and methods provided allow expression of genes between three and twenty.
摘要:
The Zea mays c.v. B73 Ubiquitin-1 ( Z. mays c.v. B73 Ubi-1) promoter drives high levels of constitutive transgene expression in plants. Repeated use of the same Z. mays c.v. B73 Ubi-1 promoter in multi-gene constructs may also lead to gene silencing, thereby making transgenic products less efficacious. Provided are gene regulatory promoter elements, constructs, and methods for expressing a transgene in plant cells and/or plant tissues using gene regulatory elements from the Ubi-1 promoter of a different Z. mays genotype, Z. mays c.v. B104.
摘要:
Provided are constructs and methods for expressing a transgene in plant cells and/or plant tissues using the regulatory elements, including the promoters and/or 3′-UTRs, isolated from Panicum virgatum ubiquitin genes.
摘要:
Provided are constructs and methods for expressing multiple genes in plant cells and/or plant tissues. The constructs provided comprise at least one bidirectional promoter link to multiple gene expression cassettes. In some embodiments, the constructs and methods provided employ a bidirectional promoter based on a minimal core promoter element from a Zea mays Ubiquitin-1 gene, or a functional equivalent thereof. In some embodiments, the constructs and methods provided allow expression of genes between three and twenty.
摘要:
Engineered and modified Cry6Aa insecticidal toxins, polynucleotides encoding such toxins, use of such toxins to control pests, and transgenic plants that produce such toxins are disclosed.