Insecticidal proteins and methods for their use
Compositions and methods for controlling pests are provided. The methods involve transforming organisms with a nucleic acid sequence encoding an insecticidal protein. In particular, the nucleic acid sequences are useful for preparing plants and microorganisms that possess insecticidal activity. Thus, transformed bacteria, plants, plant cells, plant tissues and seeds are provided. Compositions are insecticidal nucleic acids and proteins of bacterial species. The sequences find use in the construction of expression vectors for subsequent transformation into organisms of interest including plants, as probes for the isolation of other homologous (or partially homologous) genes. The pesticidal proteins find use in controlling, inhibiting growth or killing Lepidopteran, Coleopteran, Dipteran, fungal, Hemipteran and nematode pest populations and for producing compositions with insecticidal activity.
1. A transgenic plant comprising a first heterologous polynucleotide encoding a Pteridophyta insecticidal polypeptide (PtIP) active against a Lepidopteran pest and a second heterologous polynucleotide encoding a bacterial insecticidal polypeptide active against the Lepidopteran pest, wherein the first heterologous polynucleotide and the second heterologous polynucleotide are operably linked to one or more promoter sequences, the PtIP and the bacterial insecticidal polypeptide exhibiting different modes of action against the Lepidopteran pest, wherein said Pteridophyta insecticidal polypeptide comprises an amino acid sequence having at least 71% sequence identity to SEQ ID NO: 1.
2. The transgenic plant of claim 1 , wherein the bacterial insecticidal polypeptide is derived from a non-Bt bacterium.
3. The transgenic plant of claim 1 , wherein the bacterial insecticidal polypeptide is derived from a Bt bacterium.
4. The transgenic plant of claim 1 , further comprising silencing element targeting at least one pest polypeptide, wherein the silencing element is selected from the group consisting of a sense suppression element, an antisense suppression element, a double stranded RNA, a siRNA, a amiRNA, a miRNA, and a hairpin suppression element.
5. The transgenic plant of claim 1 , further comprising a heterologous polynucleotide, wherein the polynucleotide confers a trait selected from the group consisting of herbicide resistance, fungal resistance, virus resistance, stress tolerance, disease resistance, male sterility, stalk strength, increased yield, modified starches, improved oil profile, balanced amino acids, high lysine or methionine, increased digestibility, improved fiber quality, and improved drought tolerance.
6. The transgenic plant of claim 1 , wherein the transgenic plant is maize.
7. The transgenic plant of claim 1 , wherein the transgenic plant is soybean.
8. A DNA construct comprising i) a first polynucleotide encoding a Pteridophyta insecticidal polypeptide (PtIP), wherein said polypeptide comprises an amino acid sequence having at least 71% sequence identity to SEQ ID NO:1 and ii) a second polynucleotide encoding a bacterial insecticidal polypeptide, wherein the first polynucleotide and the second heterologous polynucleotides are operably linked to one or more promoter polynucleotide sequences, the PtIP and the bacterial insecticidal polypeptide exhibiting different modes of action against a Lepidopteran pest.
9. The DNA construct of claim 8 , wherein the bacterial insecticidal polypeptide is derived from a non-Bt bacterium.
10. The DNA construct of claim 8 , wherein the bacterial insecticidal polypeptide is derived from a Bt bacterium.
11. The DNA construct of claim 8 , further comprising a silencing element targeting at least one pest polypeptide, wherein the silencing element is selected from the group consisting of a sense suppression element, an antisense suppression element, a double stranded RNA, a siRNA, a amiRNA, a miRNA, and a hairpin suppression element.
12. The DNA construct of claim 8 , further comprising iii) a polynucleotide, wherein the polynucleotide confers a trait selected from the group consisting of herbicide resistance, fungal resistance, virus resistance, stress tolerance, disease resistance, male sterility, stalk strength, increased yield, modified starches, improved oil profile, balanced amino acids, high lysine or methionine, increased digestibility, improved fiber quality, and improved drought tolerance.
13. The transgenic plant of claim 1 wherein the Pteridophyta insecticidal polypeptide comprises an amino acid sequence having at least 73% sequence identity to SEQ ID NO:1.
14. The DNA construct of claim 8 wherein the Pteridophyta insecticidal polypeptide comprises an amino acid sequence having at least 73% sequence identity to SEQ ID NO:1.