Nova Patents
CA2653992C

Corn event mir162

Abstract

A novel transgenic corn event designated MIR162 is disclosed. The invention relates to nucleic acids that are unique to event MIR162 and to methods for detecting the presence of the MIR162 event based on DNA sequences of the recombinant constructs inserted into the corn genome that resulted in the MIR162 event and of genomic sequences flanking the insertion site. The invention further relates to corn plants comprising the transgenic genotype of MIR162 and to methods for producing a corn plant by crossing a corn plant comprising the MIR162 genotype with itself or another corn variety. Seeds of corn plants comprising the MIR162 genotype are also objects of the present invention. The invention also relates to methods of controlling insects using MIR162 corn plants.

CA2653992C, drawing sheet 1
Sheet 1 of 2

Term

0.7 yearsleft in the term

Expires 24 May 2027.

  1. Priority
  2. Filed
  3. Granted
  4. Today
  5. Expires

47 claims: 10 independent, 37 dependent

  1. 1
    CLAIMS:1. An isolated nucleic acid molecule comprising a nucleotide sequence that is unique to event MIR162, wherein the nucleotide sequence is selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof.
  2. 5
    A pair of polynucleotide primers for use in detecting event MIR162, comprising a first polynucleotide primer and a second polynucleotide primer which function together in the presence of an event MIR162 DNA template in a sample to produce an amplicon diagnostic for event MIR162, wherein the amplicon diagnostic for event MIR162 comprises a nucleotide sequence selected from the group consisting of SEQ ID NO:1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof.
  3. 20
    A method of detecting the presence of a nucleic acid molecule that is unique to event MIR162 in a sample comprising corn nucleic acids, wherein the nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of SEQ ID NO:1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof, the method comprising: (a) contacting the sample with a pair of primers according to claim 5;(b) performing a nucleic acid amplification reaction, thereby producing the amplicon;and (c) detecting the amplicon;wherein sequencing the amplicon of step (c) would confirm the presence of a nucleic acid molecule which comprises a nucleotide sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof.
  4. 22
    A method of detecting the presence of a nucleic acid molecule that is unique to event MIR162 in a sample comprising corn nucleic acids, wherein the nucleic acid molecule comprises a nucleotide sequence selected from the group consisting of SEQ ID NO:1, 54 SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof, the method comprising: (a) contacting the sample with a probe that hybridizes under high stringency conditions with said nucleic acid molecule from event MIR162 and does not hybridize under high stringency conditions with DNA of a control corn plant;(b) subjecting the sample and probe to high stringency hybridization conditions;and (c) detecting hybridization of the probe to the nucleic acid molecule;wherein the high stringency conditions comprise hybridizing in 7% SDS, 0.5 M NaPO4, 1 mM EDTA at 50°C with washing in 2x SSC, 0.1% SDS at 50°C;and wherein sequencing a hybridized nucleic acid molecule from step (c) would confirm the presence of a nucleic acid molecule which comprises a nucleotide sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof.
  5. 24
    A kit for detecting nucleic acids that are unique to event MIR162 comprising at least one nucleic acid molecule of sufficient length of contiguous polynucleotides to function as a primer or probe in a nucleic acid detection method, wherein said nucleic acid molecule is comprised of a sequence selected from the group consisting of SEQ ID NO:1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof, and which upon amplification of or hybridization to a target nucleic acid sequence in a sample followed by detection of the amplicon or hybridization to the target sequence and sequencing of the amplicon or a hybridized target sequence, are diagnostic for the presence of nucleic acid molecules unique to event MIR162 in the sample, wherein the nucleic acid molecules comprise sequences unique to MIR162 which are selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, SEQ ID NO: 59, and the complements thereof.
  6. 33
    A cell of a corn seed deposited at the American Type Culture Collection under the accession number PTA-8166.
  7. 35
    A biological sample derived from an event MIR162 corn plant, tissue, or seed, wherein the sample is selected from the group consisting of corn flour, corn meal, corn syrup, corn oil, corn starch, and cereals manufactured in whole or in part to contain corn by-product and wherein the sample comprises a nucleic acid molecule comprising a sequence which is or is complementary to SEQ ID NO:1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, or SEQ ID NO: 59 and wherein the molecule is detectable in the sample using a nucleic acid amplification or nucleic acid hybridization method.
  8. 36
    An extract obtained from a biological sample of an event MIR162 corn plant, tissue, or seed, said extract comprising a nucleic acid molecule comprising a sequence which is or is complementary to SEQ ID NO:1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, or SEQ ID NO: 59.
  9. 39
    A method for producing a corn plant resistant to lepidopteran pests comprising:(a) sexually crossing a first parent corn plant with a second parent corn plant, wherein said first or second parent corn plant comprises event MIR162 DNA, thereby producing a plurality of first generation progeny plants;57 (b) selecting a first generation progeny plant that is resistant to Lepidopteran insect infestation;(c) selfing the first generation progeny plant, thereby producing a plurality of second generation progeny plants;(d) selecting from the second generation progeny plants, a plant that is resistant to Lepidopteran pests;and (e) determining that the selected second generation progeny plant comprises a nucleotide sequence that is unique to event MIR162, wherein the nucleotide sequence is selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, and SEQ ID NO: 59 by performing a nucleic acid detection assay.
  10. 40
    A method of producing hybrid corn seeds comprising:(a) planting seeds of a first inbred corn line comprising a nucleotide sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, and SEQ ID NO: 59 and seeds of a second inbred line having a different genotype;(b) cultivating corn plants resulting from said planting until time of flowering;(c) emasculating said flowers of plants of one of the corn inbred lines;(d) sexually crossing the two different inbred lines with each other;(e) harvesting the hybrid seed produced thereby;and (f) verifying that plants produced from the hybrid seeds comprise a nucleotide sequence that is unique to event MIR162, wherein the nucleotide sequence is selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 38, SEQ ID NO: 41, SEQ ID NO: 45, SEQ ID NO: 47, SEQ ID NO: 49, SEQ ID NO: 55, and SEQ ID NO: 59 by performing a nucleic acid detection assay. 58
  11. 43
    An isolated insecticidal protein comprising SEQ ID NO:2.