Bacterial cultures for root-colonizing plants
AssigneeCominco Fertilizers
InventorsJoseph W. Kloepper, Catherine Simonson, Ran Lifshitz
Life of this patent
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Abstract
Bacterial strains can be reproducibly isolated from soil that are root-colonizing and directly promote plant development. For example, strains of soil bacteria are provided that are good root colonizers and that promote plant growth under gnotobiotic conditions.
Claims40
A biologically pure bacterial culture of at least one strain of a bacteria that is root-colonizing and that directly promotes plant development, wherein said strain:
- (i) promotes plant growth under gnotobiotic conditions, and (ii) has substantially all of the plant growth characteristics of Pseudomonas putida GR 12-2, deposited under ATCC accession No. 53,555, and variants thereof wherein said variants retain said characteristics.
A composition of matter comprising (i) a biologically pure bacterial culture of a strain of bacteria that is root-colonizing and directly promotes plant development and (ii) a synthetic agriculturally-compatible carrier, wherein said strain:
- (i) promotes plant growth under gnotobiotic conditions, and (ii) has substantially all of the plant growth characteristics of Pseudomonas putida GR 12-2, deposited under ATCC accession No. 53,555, and variants thereof wherein said variants retain said characteristics.
A method for promoting development of a plant, comprising the step of exposing seed from which said plant is grown to a composition of matter comprising (i)a biologically pure bacterial culture of a strain of bacteria that is root-colonizing and directly promotes plant development and (ii) a Synthetic agriculturally-compatible carrier, wherein said strain:
- (i) promotes plant growth under gnotobiotic conditions, and (ii) has substantially all of the plant growth characteristics of Pseudomonas putida GR 12-2, deposited under ATCC accession No. 53,555, and variants thereof wherein said variants retain said characteristics.
A method for obtaining a bacterial strain that directly promote plant development, comprising the steps of:
- assessing the ability of a bacterial strain directly to promote growth of a plant by applying the root-colonizing bacterial strain under gnotobiotic conditions to the growth environment of the plant;
- and
- maintaining a culture of the bacterial strain if it has substantially all of the plant growth characteristics of Pseudomonas putida GR 12-2, deposited under ATCC accession No. 53,555, and variants thereof wherein said variants retain said characteristics.
Dependencies are inferred from the claim text.