A method and composition for the treatment of iron chlorosis in plants using hydroxamic acid-type siderophores. Siderophores of this type are ferric-specific chelators, which are produced by certain microorganisms grown in iron-free environments. The current invention contemplates the use of the siderophore rhodotorulic acid to treat and prevent iron chlorosis. Rhodotorulic acid is produced by the yeast Rhodotorula pilimanae. The siderophore may be applied to the plant by a variety of methods including by soil application, foliar spray or direct injection into the plant.
Related Applications
This application is a continuation of copending U.S. application Ser. No. 06/718,858 filed Apr. 2, 1985, entitled "Treatment of Plant Chlorosis with Rhodotorulic Acid".
A method of treating a distressed tree includes the steps of: creating a mixture comprising a fertilizer and a growth hormone and applying the mixture to a root area of the distressed tree.
The invention concerns a method and a preservative for protecting wood against decay. According to the method wood is treated with a wood preservative capable of preventing the growth and spread of fungi, said preservative containing at least one complexing agent which binds at least a portion of those metals, typically iron and manganese, naturally occurring in wood that are essential to the growth of fungi. The complexing agents employed can be, e.g., ethylenediaminetetra-acetate, ethylene diamine-di-o-hydroxyphenylacetate a polyphospate or a siderophore produced by a microorganisms. The wood preservative used in the method is water-borne and specific to the decay fungi attacking wood.
.beta.-hydroxyhistidine, 4-(1-hydroxy-1-alkyl)imidazole or derivatives thereof can be used as a bidentate ligand in the chelation of iron(III), Al(III), Cr(III), Ga(III) and the actinides(IV), such as plutonium 238. .beta.-hydroxyhistidine is found in a pyoverdine-type siderophore produced by Pseudomonas fluorescens 244.
The present invention provides methods for retarding lipid oxidation in food products. More specifically, this invention relates to the use of antioxidant compositions containing effective amounts of siderophores and organic acids to retard lipid oxidation in food products. The present invention also relates to food products containing such lipid oxidation-retarding compositions.
