Compositions comprising recombinant bacillus cells and another biological control agent
View Patent ↗The present invention relates to a composition comprising a) recombinant exosporium-producing Bacillus cells that express a fusion protein comprising: (i) at least one plant growth stimulating protein or peptide and (ii) a targeting sequence that localizes the fusion protein to the exosporium of the Bacillus cells; and b) at least one further biological control agent selected from particular microorganisms disclosed herein and/or a mutant of a specific strain of a microorganism disclosed herein having all identifying characteristics of the respective strain, and/or at least one metabolite produced by the respective strain, and/or at least one metabolite produced by the respective strain that exhibits activity against insects, mites, nematodes and/or phytopathogens in a synergistically effective amount. Furthermore, the present invention relates to the use of this composition as well as a method for enhancing plant growth, promoting plant health, and/or reducing overall damage of plants and plant parts.
1. A composition comprising:
a) recombinant exosporium-producing Bacillus cells of a Bacillus cereus family member that express a fusion protein comprising:
(i) a cellulase; and
(ii) a targeting sequence, exosporium protein, or exosporium protein fragment, wherein the targeting sequence or exosporium protein comprises:
an amino acid sequence having at least about 43% identity with amino acids 20-35 of SEQ ID NO: 1, wherein the identity with amino acids 25-35 is at least about 54%;
a targeting sequence comprising amino acids 1-35 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 20-35 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 22-31 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 22-33 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 20-31 of SEQ ID NO: 1;
a targeting sequence comprising SEQ ID NO: 1; or
an exosporium protein comprising an amino acid sequence having at least 85% identity with SEQ ID NO: 2; and
b) at least one biological control agent selected from the group consisting of Bacillus thuringiensis, Bacillus megaterium, Bacillus mycoides isolate J, Bacillus methylotrophicus, Bacillus vallismortis, Chromobacterium subtsugae, Delftia acidovorans, Streptomyces lydicus, Streptomyces colombiensis, Streptomyces galbus K61, and Penicillium bilaii in a synergistically effective amount.
2. The composition according of claim 1 , wherein the Bacillus cereus family member is selected from the group consisting of Bacillus anthracis, Bacillus cereus, Bacillus thuringiensis, Bacillus mycoides, Bacillus pseudomycoides, Bacillus samanii, Bacillus gaemokensis, Bacillus weihenstephensis, Bacillus toyoiensis and combinations thereof.
3. The composition according to claim 1 , wherein the fusion protein is expressed under the control of a high-expression sporulation promoter.
4. The composition of claim 3 , wherein the high-expression sporulation promoter comprises a sigma-K sporulation-specific polymerase promoter sequence.
5. The composition according to claim 1 , wherein the at least one biological control agent is a Bacillus thuringiensis strain.
6. A seed coated with the composition according to claim 1 .
7. A method of treating a plant, a plant part, or the locus surrounding the plant to enhance plant growth and/or promote plant health comprising the step of simultaneously or sequentially applying:
a) recombinant exosporium-producing Bacillus cells that express a fusion protein comprising:
(i) a cellulase; and
(ii) a targeting sequence, exosporium protein, or exosporium protein fragment, wherein the targeting sequence or exosporium protein comprises:
an amino acid sequence having at least about 43% identity with amino acids 20-35 of SEQ ID NO: 1, wherein the identity with amino acids 25-35 is at least about 54%;
a targeting sequence comprising amino acids 1-35 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 20-35 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 22-31 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 22-33 of SEQ ID NO: 1;
a targeting sequence comprising amino acids 20-31 of SEQ ID NO: 1;
a targeting sequence comprising SEQ ID NO: 1; or
an exosporium protein comprising an amino acid sequence having at least 85% identity with SEQ ID NO: 2; and
b) at least one biological control agent selected from the group consisting of a Bacillus thuringiensis, Bacillus megaterium, Bacillus mycoides isolate J, Bacillus methylotrophicus, Bacillus vallismortis, Chromobacterium subtsugae, Delftia acidovorans, Streptomyces lydicus, Streptomyces colombiensis, Streptomyces galbus K61, and Penicillium bilaii;
in a synergistically effective amount.