The present invention provides a method for producing a fermentation product by culturing recombinant exosporium-producing Bacillus cells that express a fusion protein of interest on the exosporium in a medium containing sources of carbon and nitrogen in a total concentration of at least 20 g/L, resulting in a fermentation broth containing a high titer of the recombinant Bacillus spores.

Methods for stimulating plant growth and/or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and/or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

Methods for stimulating plant growth and/or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and/or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

Methods for stimulating plant growth and/or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and/or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

A method of increasing drought resistance of a plant, the method comprising applying a Bacillus methylotrophicus or a composition thereof (i) to the plant or to a part of the plant; and/or (ii) to an area around the plant or plant part, in an amount effective to produce an increased drought resistance in the plant as compared to the drought stress resistance of the plant in the absence of said application of Bacillus methylotrophicus or composition, is described. A biologically pure culture of a 1-aminocyclopropane-1-carboxylate (ACC) deaminase deficient Bacillus methylotrophicus bacterium strain, or a mutant thereof able to induce drought resistance in a plant are also described.

Methods for stimulating plant growth and/or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and/or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

Methods for stimulating plant growth and/or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and/or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

A biosensor for detecting nitrotoluenes. Two P. putida host populations (H-I and H-II) are engineered. H-1 undergoes fluorescence when a nitrotoluene is detected but it is also engineered to metabolize nitrotoluenes to toluene as its sole nitrogen-source. H-I is 1-ACC Deaminase inactive and is further engineered to efflux toluene and provide toluene to adjacent H-II. In H-II, ACC is the N-source and metabolizes toluene as the sole carbon and energy source available. The H-II cells are engineered to not be able to use medium fructose. The H-II population has a promoter/GFP construct with a promoter sensitive to toluene and thus they fluoresce from that first nitrotoluene metabolite i.e. toluene, produced by the H-I cells. This is achieved by making H-II cells mutants unable to transport and phosphorylate fructose i.e. PTSFRU gene knock-out.

Methods for stimulating plant growth and/or promoting plant health using free enzymes or recombinant microorganisms that overexpress enzymes are provided. Plant seeds coated with free enzymes or recombinant microorganisms that overexpress enzymes are also provided. Compositions comprising a fertilizer and an enzyme or a recombinant microorganism that overexpresses an enzyme are provided. Modified enzymes having ACC deaminase activity, recombinant microorganisms expressing the modified enzymes, plant seeds treated with the modified enzymes or recombinant microorganisms, and methods for stimulating plant growth and/or promoting plant health using the modified enzymes or recombinant microorganisms are also provided.

Isolated bioactive priming peptides and bioactive priming compostions comprising bioactive priming polypeptides and/or inducer compounds are provided that are useful when applied to plants in agricultural formulations. Methods of using the isolated bioactive priming peptides and/or compositions are also provided which are applied exogenously to the surface of a plant or a plant cell membrane or endogenously to the interior of a plant or to a plant cell. The isolated bioactive priming peptides and/or bioactive priming compositions when applied to a plant, a plant part, or a plant growth medium or a rhizosphere in an area surrounding the plant or the plant part increase growth, yield, health, longevity, productivity, and/or vigor of a plant or a plant part and/or protect the plant or the plant part from disease, and/or increase the innate immune response of the plant or the plant part and/or improve the quality and/or quantity of juice obtained from a plant or plant part.