WO2024176343A1 - 植物の生育状態の診断方法及び病気感染の発見方法 - Google Patents
植物の生育状態の診断方法及び病気感染の発見方法 Download PDFInfo
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- WO2024176343A1 WO2024176343A1 PCT/JP2023/006202 JP2023006202W WO2024176343A1 WO 2024176343 A1 WO2024176343 A1 WO 2024176343A1 JP 2023006202 W JP2023006202 W JP 2023006202W WO 2024176343 A1 WO2024176343 A1 WO 2024176343A1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
Definitions
- the present invention relates to a method for diagnosing the growth condition of a plant and a method for detecting disease infection.
- Patent Document 1 describes a diagnostic device for the growth state of plants by measuring the components of test solutions such as nutrient solution, raw water, soil extract, or plant sap in hydroponic culture or nutrient solution soil culture.
- the object of the present invention is to provide a method for diagnosing the growth condition of a plant in a non-invasive, simple and accurate manner, and a method for detecting disease infection in a plant.
- the present invention provides a method for diagnosing the growth condition of a plant by non-invasively measuring the amount and/or concentration of inorganic ions effluxing from a part of the plant body, and a method for detecting disease infection in the plant.
- the present invention also provides a method for detecting disease infection in the plant by non-invasively measuring the amount and/or concentration of inorganic ions effluxing from a part of the plant body.
- One embodiment of the present invention is a method for diagnosing the growth condition of a plant or detecting disease infection in a plant from the fluctuation in the amount of inorganic ions leaching, utilizing the fact that disease infection increases the amount of inorganic ions leaching from the plant body.
- the present invention is a method for diagnosing the growth condition of a plant by non-invasively measuring the amount and/or concentration of inorganic ions leaching from a part of the plant body, and a method for detecting disease infection in a plant by non-invasively measuring the amount and/or concentration of inorganic ions leaching from a part of the plant body.
- leaching of inorganic ions refers to the phenomenon in which inorganic ions (K + ions, Ca2+ ions, Na + ions, Mn2+ ions, Mg2 + ions, NO3- ions, etc. ) in plants flow out from the surface of the plant body, such as leaves, stems, flowers, and fruits, due to rain, dew, fog, etc.
- Inorganic ions include potassium ions, calcium ions, sodium ions, magnesium ions, manganese ions, and nitrate ions, and one or more of these inorganic ions may be measured.
- non-invasive measurement means measurement without affecting the physiological functions of the plant. Specifically, it means measurement in the atmospheric environment (water, nutrients, air, temperature, pressure) without damaging or separating any part of the plant body from the plant body. Examples of parts of the plant body include leaves, stems, flowers, and fruits. The inorganic ions of one of these parts may be measured, or inorganic ions of multiple parts may be measured.
- Non-invasive measurements include, but are not limited to, measurements in which inorganic ions are extracted into a solvent by immersing a part of a plant body in a solvent or by contacting a water-absorbent member containing a solvent with the plant surface, and then the amount and/or concentration of the extracted inorganic ions are measured.
- Plants that can be used to diagnose growth conditions or detect disease infection include, but are not limited to, cucumber, watermelon, tomato, eggplant, bell pepper, paprika, shishito pepper, melon, Chinese cabbage, cabbage, radish, lettuce, green onion, broccoli, onion, garlic, Chinese yam, asparagus, carrot, potato, celery, tobacco, rice, and strawberry.
- the part of the plant body is preferably one or more selected from the group consisting of leaves, stems, flowers and fruits, and is particularly preferably a leaf.
- the solvent may also be a buffer solution.
- the solvent is not necessarily limited to water and buffer solutions, and does not exclude solvents in which a substance of a type and amount that does not interfere with the measurement of the amount and/or concentration of inorganic ions is dissolved/dispersed in water.
- aqueous solutions containing hydrochloric acid, sulfuric acid, nitric acid, etc., and alcohol, etc. are not preferable because they may have a negative effect on plant growth.
- absorbent materials include, but are not limited to, nonwoven fabric, cellulose paper, or polymer gel.
- growth condition refers to items that change with the growth of a plant, such as leaf area index, root lushness, leaf chlorophyll content, degree of photosynthetic activity, presence or absence of pest damage, and presence or absence of disease infection.
- disease infection includes infectious diseases caused by pathogens and physiological disorders not caused by pathogens.
- pathogens include fungi, oomycetes, bacteria, viruses, nematodes, viroids, parasitic plants, and the like.
- causes not caused by pathogens include dryness/high temperature damage, excessive rain/humidity, low temperature damage (cold damage, frost damage, snow damage), nutritional disorders, salt damage, harmful accumulations in the soil, pollution (air, soil), damage caused by pesticides, and fertilizer shortages/excesses, but are not limited to these.
- Another embodiment of the present invention is a system for non-invasively measuring the amount and/or concentration of inorganic ions flowing out from a part of a plant body, the system comprising a water-absorbent member containing a solvent, and an inorganic ion sensor for measuring the amount and/or concentration of inorganic ions in the solvent.
- the system of the present invention can be used to extract inorganic ions into a solvent by contacting the plant surface with a water-absorbent member containing a solvent, and then measuring the amount and/or concentration of the extracted inorganic ions with an inorganic ion sensor, thereby making it possible to diagnose the growth condition of the plant or discover that the plant is infected with a disease.
- inorganic ion sensor there are no particular limitations on the inorganic ion sensor, and any sensor known in the industry can be used.
- Leaves of cherry tomato seedlings with apparently healthy growth conditions (1) Measurement of inorganic ion leaching amount One leaf A and one leaf B of cherry tomato seedlings with apparently healthy growth conditions were wrapped in a cellulose wiper (Bencott M-1, manufactured by Asahi KASEI), placed in a plastic bag with a zipper, 5 ml of distilled water was added to soak the wiper, and the zipper of the plastic bag was closed to prevent the water from evaporating.
- a cellulose wiper (Bencott M-1, manufactured by Asahi KASEI)
- the amount of potassium ions leached was 0.5-0.6% of the total potassium ions present in one leaf, and the amount of calcium ions leached was approximately 2.5% of the total calcium ions present in one leaf (Leaf A and Leaf B).
- the amount of potassium ions leached was 1.1-1.9% of the total potassium ions present in one leaf, and the amount of calcium ions leached was 5-8% of the total calcium ions present in one leaf (Leaves C and D).
- the growth condition of the plant can be diagnosed and disease infection in the plant can be discovered by non-invasively measuring the amount and/or concentration of inorganic ions flowing out from a part of the plant body (for example, by immersing a part of the plant body in a solvent or by contacting the plant surface with a water-absorbent member containing a solvent to extract inorganic ions and measuring the amount and/or concentration of the inorganic ions).
- Appendix 1 A method for diagnosing the growth condition of a plant by non-invasively measuring the amount and/or concentration of inorganic ions flowing out from a part of the plant body.
- Appendix 2 A method for detecting disease infection in plants by non-invasively measuring the amount and/or concentration of inorganic ions effluxing from a part of a plant body.
- Appendix 3 The method according to appendix (1) or (2), wherein the non-invasive measurement is performed to grasp an increase in the amount and/or concentration of inorganic ions.
- Appendix 6 The method according to appendix (1) or (2), wherein the non-invasive measurement is a measurement in which inorganic ions are extracted into a solvent by immersing a part of a plant body in a solvent or by contacting a water-absorbent material containing a solvent with the surface of the plant, and then the amount and/or concentration of the extracted inorganic ions is measured.
- Appendix 7 The method according to claim 6, wherein the solvent is water or a buffer solution.
- Appendix 8) The method according to claim 6, wherein the absorbent member is a nonwoven fabric, a cellulose paper, or a polymer gel.
- a system for non-invasively measuring the amount and/or concentration of inorganic ions flowing out from a part of a plant body comprising: A water-absorbent member containing a solvent; an inorganic ion sensor for measuring the amount and/or concentration of inorganic ions in the solvent; A system comprising: (Appendix 10) The system of claim 9, wherein the inorganic ion is at least one selected from the group consisting of potassium ions, calcium ions, sodium ions, magnesium ions, manganese ions, and nitrate ions. (Appendix 11) The system according to claim 9 or 10, wherein the part of the plant body is one or more selected from the group consisting of leaves, stems, flowers, and fruits.
- Appendix 12 The system according to any one of appendices (9) to (11), wherein the non-invasive measurement is a measurement in which a water-absorbent member containing a solvent is brought into contact with a plant surface to extract inorganic ions into the solvent, and then the amount and/or concentration of the extracted inorganic ions is measured using an inorganic ion sensor.
- Appendix 13 The system described in any one of claims 9 to 12, wherein the solvent is water or a buffer solution.
- Appendix 14 The system according to any one of claims 9 to 13, wherein the absorbent member is a nonwoven fabric, cellulose paper, or a polymer gel.
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Abstract
Description
(1)無機イオンのリーチング量の測定
生育状態が外見上健全なミニトマトの苗の葉A1枚、葉B1枚をそれぞれセルロースワイパー(AsahiKASEI製、ベンコットM-1)で包み、チャック付きポリ袋に入れ、蒸留水5mlを加えてワイパーに水を含ませ、水が蒸発しないようにポリ袋のチャックを止めた。24時間後にポリ袋内の抽出液を回収し、カリウムイオンセンサ(HORIBA製、コンパクトカリウムイオンセンサK-11)、及びカルシウムイオンセンサ(HORIBA製、コンパクトカルシウムイオンセンサCa-11)を用いて、抽出液中のカリウムイオン及びカルシウムイオンの量(K+イオンリーチング量・Ca2+イオンリーチング量)を測定した。
(2)葉中の無機イオン量の測定
次に葉A及び葉Bを切り取り、葉の重量を測定し、さらに蒸留水3mlを入れた乳鉢で葉を擂り潰して葉中の無機イオンを抽出した。得られた抽出液について、上記カリウムイオンセンサ及びカルシウムイオンセンサを用いて、葉中のカリウムイオン及びカルシウムイオンの量を測定した(葉中のK+イオン量・葉中のCa2+イオン量)。
(1)無機イオンのリーチング量の測定
果実が尻腐れ病を発症しているミニトマトの果実の近くの葉C1枚、葉D1枚をそれぞれセルロースワイパー(AsahiKASEI製、ベンコットM-1)で包み、チャック付きポリ袋に入れ、蒸留水5mlを加えてワイパーに水を含ませ、水が蒸発しないようにポリ袋のチャックを止めた。24時間後にポリ袋内の抽出液を回収し、カリウムイオンセンサ(HORIBA製、コンパクトカリウムイオンセンサK-11)、及びカルシウムイオンセンサ(HORIBA製、コンパクトカルシウムイオンセンサCa-11)を用いて、抽出液中のカリウムイオン及びカルシウムイオンの量(K+イオンリーチング量・Ca2+イオンリーチング量)を測定した。
(2)葉中の無機イオン量の測定
次に葉C及び葉Dを切り取り、葉の重量を測定し、さらに蒸留水3mlを入れた乳鉢で葉を擂り潰して葉中の無機イオンを抽出した。得られた抽出液について、上記カリウムイオンセンサ及びカルシウムイオンセンサを用いて、葉中のカリウムイオン及びカルシウムイオンの量を測定した(葉中のK+イオン量・葉中のCa2+イオン量)。
植物体の一部から流出する無機イオンの量及び/又は濃度の非侵襲的測定により、植物の生育状態を診断する方法。
(付記2)
植物体の一部から流出する無機イオンの量及び/又は濃度の非侵襲的測定により、植物の病気感染を発見する方法。
(付記3)
前記非侵襲的測定により、無機イオンの量及び/又は濃度の増大を把握することによる、付記(1)又は(2)に記載の方法。
(付記4)
前記無機イオンが、カリウムイオン、カルシウムイオン、ナトリウムイオン、マグネシウムイオン、マンガンイオン、及び硝酸イオンから成る群から選択される少なくとも1つである、付記(1)又は(2)に記載の方法。
(付記5)
前記植物体の一部が、葉、茎、花及び果実から成る群から選択される1つ以上である、付記(1)又は(2)に記載の方法。
(付記6)
前記非侵襲的測定が、植物体の一部を溶剤に浸漬すること、又は溶剤を含む吸水性部材を植物表面に接触させることにより、該溶剤に無機イオンを抽出した後、抽出された無機イオンの量及び/又は濃度を測定する測定である、付記(1)又は(2)に記載の方法。
(付記7)
前記溶剤が、水又は緩衝溶液である、付記(6)に記載の方法。
(付記8)
前記吸水性部材が、不織布、セルロース紙、又は高分子ゲルである、付記(6)に記載の方法。
(付記9)
植物体の一部から流出する無機イオンの量及び/又は濃度を非侵襲的に測定するシステムであって、
溶剤を含む吸水性部材と、
前記溶媒中の無機イオンの量及び/又は濃度を測定するための無機イオンセンサと、
を備える、システム。
(付記10)
前記無機イオンが、カリウムイオン、カルシウムイオン、ナトリウムイオン、マグネシウムイオン、マンガンイオン、及び硝酸イオンから成る群から選択される少なくとも1つである、付記(9)に記載のシステム。
(付記11)
前記植物体の一部が、葉、茎、花及び果実から成る群から選択される1つ以上である、付記(9)又は(10)に記載のシステム。
(付記12)
前記非侵襲的測定が、溶剤を含む吸水性部材を植物表面に接触させることにより、該溶剤に無機イオンを抽出した後、抽出された無機イオンの量及び/又は濃度を無機イオンセンサにより測定する測定である、付記(9)~(11)に記載のシステム。
(付記13)
前記溶剤が、水又は緩衝溶液である、付記(9)~(12)に記載のシステム。
(付記14)
前記吸水性部材が、不織布、セルロース紙、又は高分子ゲルである、付記(9)~(13)に記載のシステム。
Claims (9)
- 植物体の一部から流出する無機イオンの量及び/又は濃度の非侵襲的測定により、植物の生育状態を診断する方法。
- 植物体の一部から流出する無機イオンの量及び/又は濃度の非侵襲的測定により、植物の病気感染を発見する方法。
- 前記非侵襲的測定により、無機イオンの量及び/又は濃度の増大を把握することによる、請求項1又は2に記載の方法。
- 前記無機イオンが、カリウムイオン、カルシウムイオン、ナトリウムイオン、マグネシウムイオン、マンガンイオン、及び硝酸イオンから成る群から選択される少なくとも1つである、請求項1又は2に記載の方法。
- 前記植物体の一部が、葉、茎、花及び果実から成る群から選択される1つ以上である、請求項1又は2に記載の方法。
- 前記非侵襲的測定が、植物体の一部を溶剤に浸漬すること、又は溶剤を含む吸水性部材を植物表面に接触させることにより、該溶剤に無機イオンを抽出した後、抽出された無機イオンの量及び/又は濃度を測定する測定である、請求項1又は2に記載の方法。
- 前記溶剤が、水又は緩衝溶液である、請求項6に記載の方法。
- 前記吸水性部材が、不織布、セルロース紙、又は高分子ゲルである、請求項6に記載の方法。
- 植物体の一部から流出する無機イオンの量及び/又は濃度を非侵襲的に測定するシステムであって、
溶剤を含む吸水性部材と、
前記溶媒中の無機イオンの量及び/又は濃度を測定するための無機イオンセンサと、
を備える、システム。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2023/006202 WO2024176343A1 (ja) | 2023-02-21 | 2023-02-21 | 植物の生育状態の診断方法及び病気感染の発見方法 |
| JP2025501971A JPWO2024176343A1 (ja) | 2023-02-21 | 2023-02-21 |
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| PCT/JP2023/006202 WO2024176343A1 (ja) | 2023-02-21 | 2023-02-21 | 植物の生育状態の診断方法及び病気感染の発見方法 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167825A (ja) * | 1993-12-15 | 1995-07-04 | Hitachi Ltd | イオンセンサ |
| JP2979478B2 (ja) * | 1998-04-16 | 1999-11-15 | 栃木県 | 生育中の植物体栄養のリアルタイム診断法とその測定装置 |
| JP2004233188A (ja) * | 2003-01-30 | 2004-08-19 | Agriculture Forestry & Fisheries Technical Information Society | 植物中の成分を抽出・測定する方法およびそれに用いる部材 |
| JP2020095034A (ja) * | 2018-11-29 | 2020-06-18 | 桐生電子開発合同会社 | 植物の代謝生成物の非破壊計測装置及び非破壊計測方法、並びにこれを用いた植物の栽培システム及び栽培方法 |
| CN112461572A (zh) * | 2020-10-20 | 2021-03-09 | 江苏大学 | 一种快速提取植物韧皮部汁液的方法 |
-
2023
- 2023-02-21 JP JP2025501971A patent/JPWO2024176343A1/ja active Pending
- 2023-02-21 WO PCT/JP2023/006202 patent/WO2024176343A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167825A (ja) * | 1993-12-15 | 1995-07-04 | Hitachi Ltd | イオンセンサ |
| JP2979478B2 (ja) * | 1998-04-16 | 1999-11-15 | 栃木県 | 生育中の植物体栄養のリアルタイム診断法とその測定装置 |
| JP2004233188A (ja) * | 2003-01-30 | 2004-08-19 | Agriculture Forestry & Fisheries Technical Information Society | 植物中の成分を抽出・測定する方法およびそれに用いる部材 |
| JP2020095034A (ja) * | 2018-11-29 | 2020-06-18 | 桐生電子開発合同会社 | 植物の代謝生成物の非破壊計測装置及び非破壊計測方法、並びにこれを用いた植物の栽培システム及び栽培方法 |
| CN112461572A (zh) * | 2020-10-20 | 2021-03-09 | 江苏大学 | 一种快速提取植物韧皮部汁液的方法 |
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