IP Library › Granted Patent US 12,599,649
Granted Patent B2
US 12,599,649 · App. 16/631,581 · Granted Apr 14, 2026

Bioactive polypeptides for improvements in plant protection, growth and productivity

Inventors: Brian Thompson (Creve Coeur, MO); Michelle Leslie (Webster Groves, MO)
Assignee: Spogen Biotech Inc.
A61K38/16A01N37/46A01N63/10A01N63/50C07K14/195C07K14/21C07K14/245C07K14/27C07K14/32C12N1/20C12N15/82C12P21/02A01N63/22A01N63/25C12N2510/02
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Quick Facts
Patent No.
US 12,599,649
App. No.
16/631,581
Granted
Apr 14, 2026
Kind
B2
Abstract

Bioactive priming polypeptides are provided that are useful when applied to plants in agricultural formulations. Methods of using the formulations containing the bioactive priming polypeptides 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 bioactive priming polypeptides 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 decrease abiotic stress in the plant or the plant part and/or protect the plant or the plant part from disease, insects and/or nematodes, and/or increase the innate immune response of the plant or the plant part and/or change plant architecture.

Claims (12)

1 . A peptide for bioactive priming of a plant or a plant part to increase growth, yield, health, longevity, productivity, and/or vigor of a plant or a plant part and/or decrease abiotic stress in the plant or the plant part and/or protect the plant or the plant part from disease, insects and/or nematodes, and/or increase the innate immune response of the plant or the plant part and/or change plant architecture, wherein the peptide consists of a 22-53 amino acid sequence having:

(a) a 22-amino acid long flagellin-associated peptide with an amino acid sequence of SEQ ID NO: 226, 289-291, 293, 295, 299, 300, 536, 538, 571-585 wherein the flagellin-associated polypeptide has a chemical modification selected from the group consisting of isomerization, N-terminal acetylation, C-terminal amidation, and cyclization; or is in retro-inverso form; or is a part of a fusion protein; or

(b) a 22-amino acid mutant flagellin-associated peptide with an amino acid sequence of SEQ ID NO: 572, 573, 576-579, or 753.

2 . The peptide of claim 1 wherein the peptide is isolated, concentrated from a fermentation product, and/or partially purified, wherein the isolation, concentration and/or purification is by filtration, chromatography or from a recombinant microorganism.

3 . A composition for bioactive priming of a plant or a plant part to increase growth, yield, health, longevity, productivity, and/or vigor of a plant or a plant part and/or decrease abiotic stress in the plant or the plant part and/or protect the plant or the plant part from disease, insects and/or nematodes, and/or increase the innate immune response of the plant or the plant part and/or change plant architecture, the composition comprising either: the peptide of claim 1 , or any combination of the peptides of claim 1 , and an agrochemical or a carrier; or any combination of the peptides of claim 1 .

4 . A recombinant microorganism that expresses or overexpresses a peptide, wherein the peptide comprises the peptide of claim 1 or any combination of the peptides of claim 1 .

5 . The composition of claim 3 , wherein the composition comprises an antibiotic, a preservative, a buffering agent, a wetting agent, a surfactant, a coating agent, a monosaccharide, a polysaccharide, an abrading agent, a pesticide, an insecticide, a herbicide, a nematicide, a bacteriocide, a fungicide, a miticide, a fertilizer, a biostimulant, an osmoprotectant, a colorant, a humectant, an amino acid, a biological control agent, hydrochloric acid, acetic acid, trifluoroacetic acid, or a combination of any thereof.

6 . A seed coated with the peptide of claim 1 or any combination of the peptides of claim 1 ; or the composition of claim 3 ; or the recombinant microorganism of claim 4 .

7 . A method for increasing growth, yield, health, longevity, productivity, and/or vigor of a plant or a plant part and/or decreasing abiotic stress in the plant or the plant part and/or protecting the plant or the plant part from disease, insects and/or nematodes, and/or increasing the innate immune response of the plant or the plant part and/or changing plant architecture, the method comprising either:

(a) applying the peptide of claim 1 or any combination of the peptides of claim 1 or a composition comprising the peptide or peptides to a plant, a plant part, or a rhizosphere in an area surrounding the plant or the plant part to increase growth, yield, health, longevity, productivity, and/or vigor of the plant or the plant part and/or decrease abiotic stress in the plant or the plant part and/or protect the plant or the plant part from disease, insects and/or nematodes, and/or increase the innate immune response of the plant or the plant part and/or change the plant architecture; or

(b) applying the peptide of claim 1 or any combination of the peptides of claim 1 or a composition comprising the peptide or peptides to a plant growth medium to increase growth, yield, health, longevity, productivity, and/or vigor of a plant or a plant part to be grown in the plant growth medium and/or decrease abiotic stress in the plant or the plant part to be grown in the plant growth medium and/or protect the plant or the plant part to be grown in the plant growth medium from disease, insects and/or nematodes, and/or increase the innate immune response and/or change plant architecture of the plant or the plant part to be grown in the plant growth medium; or

(c) applying a recombinant microorganism that expresses the peptide of claim 1 or any combination of the peptides of claim 1 to a plant, a plant part, or a plant growth medium or a rhizosphere in an area surrounding the plant or the plant part to increase growth, yield, health, longevity, productivity, and/or vigor of the plant or the plant part and/or decrease abiotic stress in the plant or the plant part and/or protect the plant or the plant part from disease, insects and/or nematodes, and/or increase the innate immune response of the plant or the plant part and/or change the plant architecture, wherein the recombinant microorganism expresses the peptide and expression of the peptide is increased as compared to the expression level the peptide in a wild-type microorganism of the same kind under the same conditions.

Assignments (3)
SECURITY INTEREST Recorded Jan 23, 2023
From: SPOGEN BIOTECH INC; ELEMENTAL ENZYMES AG AND TURF, LLC; THOMPSON, BRIAN M; THOMPSON, KATIE C
To: GENISYS CREDIT UNION
Reel/Frame 062458/0476 →
SECURITY INTEREST Recorded Jan 23, 2023
From: SPOGEN BIOTECH INC; ELEMENTAL ENZYMES AG AND TURF, LLC; THOMPSON, BRIAN M; THOMPSON, KATIE C
To: GENISYS CREDIT UNION
Reel/Frame 062458/0544 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2020
From: THOMPSON, BRIAN; LESLIE, MICHELLE
To: SPOGEN BIOTECH INC.
Reel/Frame 054028/0684 →
Continuity (2)
Provisional Application 62534710 · Jul 20, 2017
Related Publication 20200170258A1 · Jun 4, 2020
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