Composition for controlling plant diseases comprising limonene derivative as active ingredient
阅读说明：本技术 包含柠檬烯衍生物作为活性成分的用于控制植物病害的组合物 (Composition for controlling plant diseases comprising limonene derivative as active ingredient ) 是由 李省范 李建雄 郑光宇 丁炳晔 李承式 金镇弘 裵亨祐 朴龙大 于 2018-06-07 设计创作，主要内容包括：本发明涉及一种用于控制植物病害的组合物,其包含柠檬烯衍生物作为活性成分。在本发明中,柠檬烯衍生物具有抑制水稻白叶枯病菌(Xanthomonas oryzae pv.Oryzae(Xoo))和稻瘟病菌(Magnaporthe oryzae)生长的作用,其中水稻白叶枯病菌为介导细菌性白叶枯病的病原体,稻瘟病菌为介导稻瘟病的病原体。在关于利用挥发性的抑制实验中(即,在不与Xoo或M.oryzae直接接触的状态下)证实柠檬烯衍生物具有病菌生长抑制作用。因此,柠檬烯衍生物对Xoo的生长具有抑制作用,因此它们可以有效地用作控制植物病害的组合物。(The present invention relates to a composition for controlling plant diseases, which comprises a limonene derivative as an active ingredient. In the present invention, the limonene derivative has an effect of inhibiting the growth of rice bacterial blight (Xanthomonas oryzae pv. oryzae) and rice blast (Magnaporthe oryzae), wherein the rice bacterial blight is a pathogen mediating bacterial blight and the rice blast is a pathogen mediating rice blast. The limonene derivative was confirmed to have a germ growth inhibitory effect in an inhibition experiment regarding utilization of volatility (i.e., in a state of not being in direct contact with Xoo or m.oryzae). Therefore, limonene derivatives have an inhibitory effect on the growth of Xoo, and therefore they can be effectively used as a composition for controlling plant diseases.)
1. A composition for controlling plant diseases, comprising one or more limonene derivatives as an active ingredient among compounds represented by the following formulae 1 to 10:
[ formula 1]
[ formula 2]
[ formula 3]
[ formula 4]
[ formula 5]
[ formula 6]
[ formula 7]
[ formula 8]
[ formula 9]
[ formula 10]
2. The composition according to claim 1, wherein the plant disease is bacterial blight or rice blast of rice.
3. The composition according to claim 2, wherein the bacterial blight of rice is caused by bacterial blight of rice (Xanthomonas oryzae pv. oryzae (Xoo)).
4. The composition as claimed in claim 2, wherein the rice blast is caused by Magnaporthe oryzae (Magnaporthe oryzae).
5. A method of controlling plant disease comprising treating a plant infected with a plant pathogen with the composition of claim 1.
6. The method of claim 5, wherein the treatment is spraying the composition of claim 1 directly onto the plant or spraying the composition indirectly onto the plant by volatilization.
7. The method according to claim 6, wherein the plant disease is bacterial blight or rice blast of rice.
8. The method according to claim 7, wherein the bacterial blight of rice is caused by bacterial blight of rice (Xanthomonas oryzae pv. oryzae (Xoo)).
9. The method of claim 7, wherein the rice blast is caused by Magnaporthe oryzae (Magnaporthe oryzae).
10. A fertilizer comprising the composition of claim 1.
11. A pesticide formulation comprising the composition of claim 1.
Technical Field
The present invention relates to a composition for controlling plant diseases using a limonene derivative.
Background
Rice is a plant of the monocotyledonous (Monocotyledon) and gramineae (gluminae) order, Poaceae family, and is known to have 23 different lines. Among them, cultivars can be divided into oryza sativa, which is cultivated mainly in asia and widely distributed throughout the world, and oryza sativa, which is cultivated in the west africa. Oryza sativa (Oryza sativa) can be broadly classified into the group of indica rice (Oryza sativa ssp. indica) which is cultivated in southeast asia, such as the Yangtze river in India and China, and japonica rice, which is cultivated in northeast asia, such as the north of the Yangtze river, Korea, and Japan. Rice is consumed as a staple food by more than half of the world population, and in asia, 40% to 70% of calories consumed by food are derived from rice, and thus rice is a socially and economically important crop. Although rice harvest has advanced sufficiently in the past three decades through the green revolution, the yield of rice is lost due to various natural disasters and diseases.
The main diseases occurring in rice are rice blast, rice sheath blight, bacterial leaf blight of rice and the like. Bacterial blight of rice is a disease caused by a pathogenic fungus (Magnaporthe oryzae), which belongs to Deuteromycetes (deuteromyces). When rice is infected with pathogens, small dark green spots are formed on leaves, and then gradually grow into spindle-shaped focuses, wherein the interiors of the spindle-shaped focuses are grey white, the peripheries of the spindle-shaped focuses are reddish brown, and the exteriors of the focuses are yellow. In severe cases, the lesion is markedly dilated while maintaining its dark green color, thereby forming a green powdery spore (conidia) on the back of the lesion.
Meanwhile, bacterial blight of rice is a bacterial disease caused by pathogenic bacteria of bacterial blight of rice (Xanthomonas oryzae), which is a gram-negative bacillus. Rice infected with the bacterial blight pathogen of rice shows symptoms of bacterial blight, and is eventually burned to white and withered.
Bacterial blight of rice occurs in asia, australia, the united states and the like, and the damage caused by bacterial blight of rice is very serious, especially in south-east asia. Bacterial blight of rice was first found in the area of Fukan in 1884, and it was confirmed in 1911 that it is a disease caused by bacteria, and in recent years, the pathogen has been renamed to Rhizoctonia solani (Xanthomonas oryzae pv. oryzae) by analysis of fatty acids and cell proteins, and the name has been used up to now. The first report of bacterial blight of rice in korea was that it occurred in hamanderson county in 1930, and the region where bacterial blight of rice occurred was limited to some regions in south korea until 1960, and then the region where the disease occurred was expanded to the whole country due to the expansion of cultivation of susceptible species "jinnanpu (gelmnmpung)" to bacterial blight of rice. Bacterial blight of rice is considered as one of three major diseases of rice, and shows not only a phenomenon that bacterial blight appears in leaves at the late stage of cultivation, but also a symptom of bacterial blight appearing after transplantation, thereby causing rice diseases, with a loss of about 20% to 30%, up to 80% of the yield.
In korea, early infectious agents are overwintering due to the presence of winter season, and thus, rice bacterial blight (x. oryzae) can survive in soil, weeds, dry straws, seeds, etc. for up to one year, and they are usually killed before the new cultivation season comes. However, early infectious agents are often observed in susceptible seeds or embryos to overwinter, following which potential pathogens are transferred to the paddy field by irrigation water and infect the rice, and then the pathogens multiply in infected leaves and often become secondary infectious agents. In the case of weeds commonly found in waterways and reservoirs, when pseudorice (Leersia) or pseudorice (Leersia japonica) is subjected to conditions that can or cannot cause disease development by pathogens, bacteria can aggregate around the roots of these weeds and enter the winter season. When the thawed irrigation water flows into the paddy field, the bacteria agglutinated near the roots are propagated through the water to become primary infectious agents. In addition, when pathogens overwinter inside the last year infected dry straw (rice hulls), these pathogens can be released into the paddy field and become primary infectious agents when sprayed onto the paddy field. After transplanting rice, pathogens flowing into soil from host plants or irrigation water gradually diffuse to permeate into waterlines or pores of leaves in contact with water and form lesions, and pathogens released from the lesions to the outside or released pathogens fall into paddy fields or healthy leaves and come into contact with lesions to be infected. Where pathogens infiltrate the leaves and form lesions, many bacteria leak to the outside, becoming secondary infectious agents, thus accelerating disease spread. In addition, weather conditions (such as typhoons and floods) also contribute to the occurrence of diseases. Typhoon can cause much damage to rice leaves by strong wind, so that pathogens can invade the wound caused and weaken its resistance, thereby promoting disease outbreak. Many bacteria released from the lesions promote contact with healthy leaves, and pathogens released to the outside by rain accompanying typhoons may be blown off by wind over 50m and become infectious agents.
At present, as a method for controlling the source of infection, thorough management of roads is important, for example, host weeds are removed from paddy fields and waterways and drainage systems before afforestation to eliminate primary infectious agents. In areas where diseases occur frequently or are at risk each year, the cultivation of susceptible strains is avoided, and resistant strains are planted to fundamentally prevent the occurrence of diseases. Bacterial diseases are primarily transmitted through water as a vehicle, and therefore it is necessary not to flood the ground during a flood or to drain the water as quickly as possible during a flood to minimize pathogen blockage. In the case of control by drugs, the control effect by drug permeation is not high because bacterial blight of rice grows only in the host plant lumen, so that diseases are currently avoided by cultivating and breeding a variety that is completely resistant. However, this is not a practical solution and there are limitations because the supply of lines is limited which limits the preference of consumers. However, most of the drugs for control are chemically synthesized, and these drugs have problems in that they have negative effects on public health such as human and livestock in the case of wide use and are not environmentally friendly, thereby drawing attention to resistance to pests. Therefore, there is a need for environmentally friendly active substances that can replace the natural ingredients of synthetic materials.
In the past, secondary metabolites in plants were simply excreted as metabolites. However, it has recently become apparent that secondary metabolites play an important role between plants, and research in this field is becoming more and more important. In particular, unlike primary metabolites (sugars, fatty acids, amino acids, etc.) which are essential for the growth and development of plants, secondary metabolites (such as alkaloids, phenols, terpenoids, etc.) are additives and thus do not significantly affect the growth of plants. Plants are biosynthesizing these secondary metabolites for self-defense, ecological interactions, and the like, which are called allelochemicals. Allelochemicals may occur in forms that promote and inhibit the growth of specific plants or microorganisms, depending on the substances synthesized, secreted or accumulated in the plant, which are referred to as allelochemicals, and may be used as natural pesticides.
Korean granted patent No. (KR reg. Pat. No.)10-0741866 discloses a composition that reduces competition between crops and weeds by inhibiting germination of weed seeds caused by allelopathy. Most of these allelochemicals are contained in plant parts (i.e., leaves, stems, roots, flowers, fruits and seeds), and the major substances are largely classified into toxic gases, organic acids and aldehydes, aromatic acids, unsaturated lactones, coumarins, quinones, flavonoids, tannins, alkaloids, terpenes, steroids, unknown substances, and the like. They affect neighboring plants and microorganisms through various pathways, for example, accumulation in plants, secretion through roots, volatilization through local tissues (such as leaves), elution of allelochemicals due to rainfall, and the like.
In this regard, the present inventors have confirmed that, when rice is inoculated with Xanthomonas oryzae (Xoo), which is a pathogen that mediates bacterial blight of rice, biosynthesis of terpenes (i.e., plant-derived antibacterial substances) in the inoculated rice is increased, and particularly, that limonene is present in the most amount in terpenes, and that limonene and derivatives thereof have an excellent effect of inhibiting growth of Xoo or magnaporthe oryzae (m.oryzae), thereby completing the present invention.
Disclosure of Invention
[ problem ] to provide a method for producing a semiconductor device
An object of the present invention is to provide a composition for controlling plant diseases, which comprises a limonene derivative as an active ingredient.
[ technical solution ] A
In order to achieve the above objects, the present invention provides compositions for controlling plant diseases, which comprise the limonene derivatives of the
[ formula 1]
[ formula 2]
[ formula 3]
[ formula 4]
[ formula 5]
[ formula 6]
[ formula 7]
[ formula 8]
[ formula 9]
And
[ formula 10]
In addition, the present invention provides a method for controlling plant diseases using the limonene derivative.
[ PROBLEMS ] the present invention
The limonene derivatives of the present invention have an effect of inhibiting the growth of rice bacterial blight (Xanthomonas oryzae) or rice blast (Magnaporthe oryzae) (i.e., a pathogen mediating rice blast) of Xanthomonas oryzae (Oryza oryzae). Limonene derivatives inhibit the growth of pathogens not only by direct contact with the pathogens, but also by indirect contact (i.e., volatilization) with the pathogens.
Drawings
Figure 1 shows the direct inhibition of the growth of rice bacterial blight (Xanthomonas oryzae pv. oryzae (Xoo)) by limonene and limonene derivatives (i.e., carveol and carvone).
FIG. 2 shows the direct inhibition of Xoo growth by limonene and limonene derivatives (i.e., S- (-) -limonene, R- (+) -limonene, L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide and (-) -limonene oxide).
FIG. 3 shows the inhibition of Xoo growth by (S) - (-) -perillyl alcohol, α -terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol.
FIG. 4 shows inhibition of Xoo growth by volatilization of limonene and limonene derivatives (i.e., S- (-) -limonene, R- (+) -limonene, L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide and (-) -limonene oxide).
Figure 5 shows the inhibition of growth of xanthomonas pathogens other than Xoo by limonene and limonene derivatives (i.e. carveol and carvone).
FIG. 6 shows images representing increased material in rice infected with Xoo.
FIG. 7 shows the inhibitory effect of limonene, L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, alpha-terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol on the growth of Pyricularia oryzae.
FIG. 8 shows quantitative measurements of inhibition of Pyricularia oryzae growth by limonene, L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, alpha-terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol.
Detailed Description
The present invention will be described in detail below.
The present invention provides a composition for controlling plant diseases, comprising at least one limonene derivative as an active ingredient among compounds represented by the following
[ formula 1]
[ formula 2]
[ formula 3]
[ formula 4]
[ formula 5]
[ formula 6]
[ formula 7]
[ formula 8]
[ formula 9]
And
[ formula 10]
The above compounds are carveol, carvone and limonene oxide, especially L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, alpha-terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol. More specifically,
The plant disease may be bacterial blight of rice, which may be induced by, but not limited to, bacterial blight of rice (Xoo), which may be induced by, but not limited to, rice blast.
The limonene derivative as an active ingredient may be included at a concentration of 10nM to 100mM, but is not limited to this concentration.
The above compounds may be used in the form of agriculturally pharmaceutically acceptable salts, and base addition salts may be used as the salts used. The term "agriculturally pharmaceutically acceptable salt" refers to any organic or inorganic addition salt of the base compound of
In addition, the compounds represented by
The addition salts of the present invention may be prepared by conventional methods. For example, the addition salts according to the present invention can be prepared by dissolving the compounds of
The limonene derivative may be dissolved in any one or more selected from the group consisting of water, glycerin, propylene glycol, butylene glycol, pentylene glycol, and sorbitol, mineral oil, lanolin oil, higher fatty acid, higher alcohol, ester oil, silicone oil, fluorine compound, and other vegetable oil, mineral oil, animal oil, and synthetic oil.
The composition may be in the form of an aerosol spray or a spray for spraying.
The composition may be a composition that can be used in solid or gel form by adding a curing agent. The term "solid form" means that it does not have fluidity at least at room temperature, and in the present invention, a solid may mean that it does not have fluidity at a temperature of 60 ℃ or less. For solid formulations, the use of waxes is contemplated. When the wax is mixed and cooled, a solid type formulation having high hardness while forming a fine three-dimensional crystal structure can be obtained. In addition, when the oil gelling agent is mixed and dissolved in oil and then cooled, a solid type formulation having high hardness while forming a fine three-dimensional crystal structure can be formed, similar to an oil/wax formulation. Examples of alternative solidifying agents, including waxes and oils, may include proteins or protein hydrolysates, cationic polysaccharides, modified starches, cellulose and modified cellulose (e.g., hydroxypropyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, ethyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose and ethyl hydroxyethyl cellulose), amide pectins, nonionic polysaccharides, hydroxypropyl methyl cellulose, propylene glycol alginate, gelatin, agar, phenolic resins, urea, melamine, epoxy resins, polyesters, silicones, rubbers, polyisocyanates, polyamines, polyurethanes, bioplastics, biodegradable thermoset resins, biodegradable thermoplastic resins, polyvinyl alcohols, polyvinylpyrrolidone derivatives, gums (e.g., gum arabic, xanthan gum, guar gum, carrageenan gum, and alginates), and polyoxyethylene polyoxypropylene copolymers.
The composition for controlling plant diseases according to the present invention may be a simple mixture of limonene derivatives. Alternatively, the composition for controlling plant diseases may be prepared by mixing the limonene derivative with an inert carrier and adding a surfactant and other necessary supplements to the mixture, so that the mixture may be formulated into an emulsion, a fluidizing agent, a wettable powder, a granulated wettable powder, a dust, granules, and the like. In the present invention, the above-mentioned composition for controlling plant diseases may be used as a seed treatment agent by itself by adding another inert ingredient.
Examples of liquid carriers that can be used in the formulation can include water; alcohols such as methanol and ethanol; ketones such as acetone and methyl ethyl ketone; aromatic hydrocarbons such as benzene, toluene, xylene, ethylbenzene, and methylnaphthalene; aliphatic hydrocarbons such as hexane, cyclohexane, kerosene and light oil; esters, such as ethyl acetate and butyl acetate; nitriles such as acetonitrile and isobutyronitrile; ethers such as diisopropyl ether and dioxane; amides such as N, N-dimethylformamide and N, N-dimethylacetamide; halogenated hydrocarbons such as dichloromethane, trichloroethane and carbon tetrachloride; dimethyl sulfoxide; and vegetable oils such as soybean oil and cottonseed oil.
Examples of solid carriers that may be used in the formulation may include fine powders or particles such as minerals (e.g., kaolin, attapulgite clay, bentonite, montmorillonite, acid clay, pyrophyllite, talc, diatomaceous earth, and talcite); natural organic materials such as corn leaf meal and walnut shell meal; synthetic organic materials, such as urea; salts, such as calcium carbonate and ammonium sulfate; synthetic inorganic materials such as synthetic hydrated silica; as the liquid carrier, aromatic hydrocarbons such as xylene, alkylbenzene, and methylnaphthalene; alcohols such as 2-propanol, ethylene glycol, propylene glycol and ethylene glycol monoethyl ether; ketones such as acetone, cyclohexanone and isophorone; vegetable oils such as soybean oil and cottonseed oil; petroleum aliphatic hydrocarbons, esters, dimethyl sulfoxide, acetonitrile and water.
Examples of the surfactant may include anionic surfactants such as alkyl sulfate ester salts, alkylaryl sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkylaryl ether phosphate ester salts, lignosulfonates, and naphthalene sulfonate formaldehyde polycondensates; nonionic surfactants such as polyoxyethylene alkyl aryl ethers, polyoxyethylene alkyl polyoxypropylene block copolymers and sorbitan fatty acid esters; cationic surfactants, such as alkyltrimethylammonium salts.
Examples of other extenders may include water soluble polymers such as polyvinyl alcohol and polyvinyl pyrrolidone; and polysaccharides such as gum arabic, alginic acid and salts thereof, carboxymethyl cellulose (CMC), and xanthan gum; inorganic materials such as magnesium aluminum silicate, alumina sol, preservatives, and coloring agents; stabilizers, such as isopropyl phosphate (PAP) and Butyl Hydroxy Toluene (BHT).
The composition may be one having a continuous control action by volatilizing the limonene derivative into the air.
In one embodiment of the present invention, limonene derivatives (i.e., L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, alpha-terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol) were demonstrated to have direct inhibitory effects on (Xoo) growth (FIGS. 2 and 3), and in the absence of direct contact, the limonene derivatives showed an inhibitory effect on Xoo even through volatility (figure 4), the limonene derivatives showed particularly excellent inhibitory effect on the growth of Xoo compared to other pathogens of the xanthomonas genus (fig. 5). In addition, L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, α -terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol also showed an effect of inhibiting the growth of Pyricularia oryzae (see FIGS. 7 and 8).
Therefore, the compounds represented by [ formula 1] to [ formula 10] can be effectively used in compositions for controlling plant diseases such as bacterial blight of rice and rice blast.
In addition, the present invention provides a method for controlling plant diseases, which comprises treating a plant infected with a plant pathogen with a composition comprising at least one limonene derivative selected from the group consisting of the compounds represented by
The limonene derivative may be one or more selected from the group consisting of: carveol, carvone and limonene oxide, specifically, L-carvone, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, alpha-terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol
The treatment may be spraying the composition directly onto the plant, the soil on which the plant is growing or into the medium used for plant cultivation.
The control method of the present invention includes treatment of the stem and leaves of the plant, treatment of the place where the plant is growing (e.g., soil), treatment of the seed (e.g., seed sterilization/seed coating), and treatment of the roots.
The plant disease may be bacterial blight of rice, but the plant disease is not limited thereto, and the plant may be rice, but the plant is not limited thereto.
The stem and leaf treatment as a control method of the present invention may especially comprise application to the surface of the plant, such as spraying on the stem and leaves. The soil treatment as the control method of the present invention may include, for example, spraying to soil, mixing with soil, applying a liquid treatment to soil (irrigation liquid treatment, injection into soil, and load liquid treatment), and the positions to be treated include planting holes, furrows, areas near the planting holes, areas near the planting furrows, the entire surface of the growing area, areas between soil and plants, areas between roots, areas below plant stems, main furrows, soil for growing, nursery room, box for rice planting, tray for planting, and seed bed. The treatment may be performed before spraying, during spraying, after spraying, during rice cultivation, before sediment cultivation, during sediment cultivation, and during growth after sediment cultivation. In the soil treatment described above, the active ingredients may be applied to the plants at the same time, or a solid fertilizer (e.g., a paste fertilizer) containing the active ingredients may be applied to the soil. The active ingredient may be mixed in the irrigation liquid, for example, may be injected into an irrigation facility (e.g., irrigation pipe, sprinkler, etc.), mixed in a waterflood between furrows, or mixed in an aqueous medium. Alternatively, the irrigation liquid and the active ingredient may be pre-mixed, e.g. for treatment by suitable irrigation methods, including the irrigation methods described above and other methods such as spraying and flooding.
As the volatilization treatment in the control method of the present invention, for example, a method of protecting a plant from a pest by volatilization after spraying the composition for controlling a plant disease of the present invention into a medium (e.g., soil for cultivating a plant, hydroponic medium for cultivating a plant, seed bed for cultivating a plant, etc.). In addition, the composition may be placed around the plant so that the plant may be exposed to the gaseous volatile components.
As the seed treatment of the control method of the present invention, for example, a method of treating seeds with the composition for controlling plant diseases of the present invention to protect the seeds from pests. Specific examples of the method may include a spray treatment method in which a suspension of the composition for controlling plant diseases of the present invention is atomized and sprayed onto the surface of seeds; a spray treatment method in which a wettable powder, an emulsion, a fluidizing agent or the like of the composition for controlling plant diseases of the present invention is sprayed onto the surface of seeds directly or after adding a small amount of water; an immersion treatment method in which seeds are immersed in a solution of the composition for controlling plant diseases of the present invention for a specific period of time; as well as thin film coating methods and particle coating processes.
When plants or soil for plant growth are treated with the compound according to the present invention, the amount of the composition for treatment may vary depending on the type of plants to be treated, the type and frequency of pests to be controlled, the formulation, the treatment time, the weather conditions, and the like.
The emulsion, wettable powder, fluidizing agent and the like are usually diluted with water and then sprayed for treatment. In this case, the concentration of the active ingredient is generally in the range of 0.0001 to 3% by weight, preferably in the range of 0.0005 to 1% by weight. Powders, granules, etc. are generally used for processing without dilution.
The control method of the invention can be used for cultivated land or non-cultivated land such as paddy field and the like.
In one embodiment of the present invention, limonene derivatives (i.e., L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, alpha-terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol) were demonstrated to have direct inhibitory effects on (Xoo) growth (FIGS. 2 and 3), and in the absence of direct contact, the limonene derivatives showed an inhibitory effect on Xoo even through volatility (figure 4), the limonene derivatives showed particularly excellent inhibitory effect on the growth of Xoo compared to other pathogens of the xanthomonas genus (fig. 5). In addition, L-carveol, S- (+) -carvone, R- (-) -carvone, (+) -limonene oxide, (-) -limonene oxide, (S) - (-) -perillyl alcohol, α -terpineol, carvacrol, (-) -isopulegol and (+) -isopulegol also showed an effect of inhibiting the growth of Pyricularia oryzae (see FIGS. 7 and 8).
Accordingly, any one or more limonene derivatives selected from the group consisting of the compounds represented by
In addition, the present invention provides a fertilizer comprising any one or more limonene derivatives selected from the group consisting of the compounds represented by
In addition, the present invention provides a pesticidal formulation comprising, as an active ingredient, any one or more limonene derivatives selected from the group consisting of the compounds represented by
Hereinafter, the present invention will be described in detail with reference to examples.
The following examples and experimental examples are provided only to illustrate the present invention, but the present invention is not limited by these examples and experimental examples.
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