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Plant activator

a plant activator and plant technology, applied in the field of plant activators, can solve the problems of requiring a large amount of energy, and achieve the effect of promoting the formation of flower buds

Inactive Publication Date: 2005-07-07
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] As described above, the aforementioned ketol fatty acid exerting the effect of p

Problems solved by technology

Formation of flowers is a generative phenomenon at a mature stage of plants for transmitting their genes to the next generation, and requires a large amount of energy.

Method used

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Examples

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examples

[0130] The present invention will next be described in detail by way of Examples, which should not be construed as limiting the invention thereto.

production example

Production of Specific Ketol Fatty Acid (I)

[0131] Specific ketol fatty acid (I) [9-hydroxy-10-oxo-12(Z),15(Z)-octadecadienoic acid] was produced by means of an enzyme method as follows.

[0132] 1. Preparation of Rice-Germ-Derived Lipoxygenase

[0133] Rice germ (350 g) was washed with petroleum ether, defatted, and then dried. The resultant rice germ (250 g) was suspended in a 0.1 M acetate buffer solution (pH 4.5) (1.25 L), and the resultant suspension was homogenized.

[0134] Subsequently, the resultant homogenized extract was subjected to centrifugation at 16,000 rpm for 15 minutes, to thereby yield a supernatant (0.8 L). Ammonium sulfate (140.8 g) (30% saturation) was added to the supernatant, and the resultant mixture was allowed to stand at 4° C. overnight. Thereafter, the mixture was subjected to centrifugation at 9,500 rpm for 30 minutes, to thereby yield a supernatant (0.85 L). Ammonium sulfate (232 g) (70% saturation) was added to the supernatant, after which the resultant mi...

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Abstract

An object of the present invention is to determine novel means of activating plants; more particularly, means or controlling plant growth, such as means of promoting growth, means of controlling dormancy, means of imparting tolerance against stress for plants (dryness, high or low temperatures, osmotic pressure, etc.), and means of preventing aging. The present inventors have found that the above object can be achieved by providing plant activators containing, as an active ingredient, C4-C24 ketol fatty acids, in particular, 9-hydroxy-10-oxo-12(Z),15(Z)-octadecadienoic acid.

Description

TECHNICAL FIELD [0001] The present invention relates to a plant activator. BACKGROUND ART [0002] Development of techniques for activating plants is a very important issue for improving supply efficiency of grain plants and garden plants. [0003] Factors for determining growth rate of plants include temperature, light, and nutrients. Conventionally, in order to promote growth of plants, temperature conditions and sunlight irradiation conditions have been controlled in accordance with characteristics of plants to be grown. Along with techniques utilizing temperature or light, manuring is a typical technique for promoting growth of plants. Manuring has exerted reliable effects. [0004] However, the effect of manuring is limited, and even when the amount of fertilizers employed is increased, the effect of promoting growth of plants to a higher level cannot be expected. Employment of excessive amounts of fertilizers may not only inhibit growth of plants, but also induce contamination of so...

Claims

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Application Information

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IPC IPC(8): A01N37/42
CPCA01N37/42A01G7/06
Inventor YOKOYAMA, MINEYUKIYAMAGUCHI, SHOKOIIDA, TOSHIIKOJIMA, KIYOTAKAKOBAYASHITANAKA, OSAMU
Owner SHISEIDO CO LTD
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