Abstract: A soil-resistant fiber fabric having excellent water/oil repellency and excellent soil dirt resistance is obtained by fixing colloidal silica to a fiber fabric, and by subsequently treating the fiber fabric with a water/oil repellent fluorine compound, thereby having the water/oil repellent fluorine compound adhere to a surface of the fiber fabric.

Abstract: A soil-resistant fiber fabric having excellent water/oil repellency and excellent soil dirt resistance is obtained by fixing colloidal silica to a fiber fabric, and by subsequently treating the fiber fabric with a water/oil repellent fluorine compound, thereby having the water/oil repellent fluorine compound adhere to a surface of the fiber fabric.

Abstract: Provided is a novel heterocycle-containing amino acid compound that has a metal uptake ability equivalent to mugineic acids and can be less expensively produced than mugineic acids. Also provided are a fertilizer and a plant growth regulating agent each comprising the novel heterocycle-containing amino acid compound. The present invention is a heterocycle-containing amino acid compound represented by general formula (1): (wherein: R1, R2 and R3 are the same or different and represent a hydrogen atom or a carboxyl-protecting group; R4 represents a hydrogen atom or a hydroxy-protecting group; R5 represents a hydrogen atom or an amino-protecting group; and n is an integer of 1-3) or a salt thereof and use of the same.

Abstract: Provided is a novel heterocycle-containing amino acid compound that has a metal uptake ability equivalent to mugineic acids and can be less expensively produced than mugineic acids. Also provided are a fertilizer and a plant growth regulating agent each comprising the novel heterocycle-containing amino acid compound. The present invention is a heterocycle-containing amino acid compound represented by general formula (1): (wherein: R1, R2 and R3 are the same or different and represent a hydrogen atom or a carboxyl-protecting group; R4 represents a hydrogen atom or a hydroxy-protecting group; R5 represents a hydrogen atom or an amino-protecting group; and n is an integer of 1-3) or a salt thereof and use of the same.

Abstract: The invention provides a method for creating a transgenic plant comprising a gene containing a DNA to encode a transporter protein which selectively absorbs mugineic acid-iron complex. The transgenic plant is useful as a plant capable of growing in alkaline soil containing no bivalent iron but containing, for example, trivalent iron.

Abstract: A method for producing mugineic acids, which is represented by the following scheme: (wherein R1 and R2 represent a hydrogen atom or a hydroxyl group, R3 represents a hydroxyl group or an amino group, R4 and R7 represent a hydrogen atom or a protecting group of a carboxyl group, R5 represents a protecting group of an amino group, R6 represents a protecting group of a carboxyl group, and R8 represents —OR9 (wherein R9 represents a protecting group of a hydroxyl group) or —NHR15 (wherein R10 represents a protecting group of an amino group)).