United States of America, As Represented by the Secretary of Agriculture

The United States of America As Represented by the Secretary of

Other

The Ohio State University

Ohio University

David A Schisler

Patricia J Slininger

Michael J Boehm

Naseem I Khan

Rodney J Bothast

Maureen A Shea Andersh

Tugba Adiyaman

Karen D Burkhead

Novel strains ofare disclosed. Several novel mutated strains of Pseudomonads are engineered by repetitive culturing of a parent strain under stressed conditions. Various enriched populations are screened and ranked based on relative performance indices including viable cell yield during growth, efficacy in suppression of dry rot disease, cell growth recovery after dry storage and resistance to switchgrass hydrolysate.

Desiccation resistant pseudomonad strains and treatment of agricultural maladies therewith

Bacterial compositions effective for inhibiting fungal diseases of potatoes and/or potato sprouting are produced by co-culture of two or more of(NRRL B-21133),biovar (NRRL B-21053),(NRRL B-21102) and(NRRL B-21050). Compositions produced by co-culture of these bacteria together in the same culture medium are significantly more effective for inhibiting fungi-induced diseases of potatoes and/or inhibiting sprouting of potatoes, than blends or mixtures of the same bacteria cultured separately.

Biocontrol of storage maladies of potatoes by bacterial antagonists produced in co-culture

Six bacterial strains:strain 03WN13,strain 03WN23,strain 03WN25,strain 10IL21,strain 10IL31, andstrain 13IL01, are superior antagonists ofPethybr., the causative agent of pink rot on potatoes. These bacterial strains are effective for suppression and control of pink rot on potatoes.

Use of novel strains for biological control of pink rot infections in potato tubers

Strains ofwhich are superior antagonists offor suppression and control of FHB in cereals, particularly in wheat and barley, are described. The strains are prothioconazole tolerant variants of previously describedOH 182.9 (NRRL Y-30216). Moreover, these prothioconazole tolerant variants exhibit significantly increased efficacy againstin comparison to the parent strain OH 182.9.

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Three choline utilizing strains of microorganisms isolated from the anthers of wheat,strain AS 55.2,species strain OH 221.3, andspecies strain AS 64.4, are superior antagonists of. These microorganisms are effective for suppression and control of FHB in cereals, particularly in wheat and barley.

Choline-utilizing microbial strains for biologically controlling fusarium head blight

Four yeasts (NRRL Y-30213, NRRL Y-30214, NRRL Y-30215, and NRRL Y-30216) and 1 bacterium (NRRL B-30212) have been identified as being superior antagonists capable of suppressinghead blight (head scab) in cereals, particularly in wheat and barley.head blight is primarily caused by the fungus(anamorph=).

Four yeasts (NRRL Y-30213, NRRL Y-30214, NRRL Y-30215, and NRRL Y-30216) and 1 bacterium (NRRL B-30212) have been identified as being superior antagonists capable of suppressing Fusarium head blight (head scab) in cereals, particularly in wheat and barley. Fusarium head blight is primarily caused by the fungus (anamorph&equals; ).

Yeasts for reducing fusarium head blight in cereals and selection thereof

Microbial antagonists that will suppress Fusarium head blight (head scab) in cereals, particularly in wheat and barley have been identified. Two superior antagonists include NRRL B-30210 and NRRL B-30211.

Bacillus species for reducing fusarium head blight in cereals

Sprouting in stored potatoes is suppressed with sprout control agents of bacterial origin. These agents are typically applied to the potato surfaces as whole culture broths and they prevent softening and necrosis of the tuber. In a preferred embodiment of the invention, selected isolates also have the secondary effect of Fusarium dry rot control.

Biological control of sprouting in potatoes

Bacteria which will suppress fungus-induced potato disease under storage conditions have been screened and selected from soil samples. A method for isolating these antagonists, their use in controlling potato disease, and specific isolates which are inhibitory to potato dry rot disease under post-harvest conditions constitute the essence of the invention. The subject biocontrol agents are considered to be economically-feasible alternatives to chemical agents currently in use for this purpose.

Growing community of inventors

Morton, IL, United States of America

David A Schisler