WO2001026464A1 - L'acide salicylique et des composes phenoliques apparentes pour accroitre la photosynthese chez les plantes - Google Patents

L'acide salicylique et des composes phenoliques apparentes pour accroitre la photosynthese chez les plantes Download PDF

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Publication number
WO2001026464A1
WO2001026464A1 PCT/CA2000/001191 CA0001191W WO0126464A1 WO 2001026464 A1 WO2001026464 A1 WO 2001026464A1 CA 0001191 W CA0001191 W CA 0001191W WO 0126464 A1 WO0126464 A1 WO 0126464A1
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plant
plants
photosynthetic rate
use according
composition
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PCT/CA2000/001191
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English (en)
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Donald L. Smith
Balakrishnan Prithiviraj
Xiaomin Zhou
Wajahat Khan
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Mcgill University
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Priority to AU77666/00A priority Critical patent/AU7766600A/en
Publication of WO2001026464A1 publication Critical patent/WO2001026464A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
    • A01N37/38—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system
    • A01N37/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids having at least one oxygen or sulfur atom attached to an aromatic ring system having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system

Definitions

  • the present invention relates to agriculture. More particularly, the invention relates to a method of increasing photosynthesis of a plant and more particularly of a crop plant. In addition, the invention relates to a method of
  • SA Salicylic acid
  • SAR systemic acquired resistance
  • SA may play a role in flowering: concentration in the phloem of cocklebur plants rises when they are induced to flower through daylength manipulations (Cleland & Ajami 1974), and was shown to induce flowering in Impatiens balsamina (Nanda et al., 1976) and Pistia stratiotes (Pieterse, 1978).
  • Gentisic acid is found to occur naturally in plants (Pridham 1965). Through radio-labelling studies Bennett and Towers (1959) found that exogeneously applied salicylic acid was converted to gentisic acid and o- pyrocatechuic acid in four different genera of plants. The physiological role of gentisic acid in plants has not been studied in detail. However, two possible functions have been suggested; inhibition of prostaglandin biosynthesis (Groenewald and Westhuizen, 1998) and induction of plant resistance to pathogen attack (Belles et al. 1999).
  • the present invention seeks to meet these and other needs.
  • the present description refers to a number of documents, the content of which is herein incorporated by reference in their entirety.
  • the invention concerns a composition for enhancing the photosynthetic rate, and/or growth, and/or yield of a plant and especially of a crop plant. More specifically, the present invention relates to a composition comprising SA or a related phenolic compound (e.g. ASA, GA...) which can increase the photosynthetic rate, and/or growth, and/or yield of a crop plant. More particularly, the invention relates to methods and compositions to enhance the photosynthetic rate, and/or growth, and/or yield of a plant and especially of a crop plant grown under field conditions. In certain embodiments, the plant is a non-legume. In further embodiments, the invention relates to methods and compositions to increase the photosynthetic rate, and/or growth, and/or yield of a legume, more particularly soybean, and especially to a legume grown under field conditions.
  • SA a related phenolic compound
  • compositions of the present invention act not only on a legume such as soybean, but on plants in general, as exemplified with a number of non-legume crops. More specifically, these non-legume crops are exemplified with diversified and evolutionary divergent crops such as corn, winter wheat, barley (Poaceae); canola (Brassicaceae); apple (Rosaceae); and grape (Vitaceae).
  • the present invention thus also refers to compositions for enhancing photosynthetic rate, and/or growth, and/or yield of non-legumes.
  • compositions comprising SA and related compounds for enhancing photosynthetic rate, and/or growth, and/or yield of non-legumes.
  • non-legumes include cotton, corn, wheat, barley, rice, canola, potato, cucumber, cantaloupe, melon, lettuce, apple, grape and beet.
  • compositions comprising SA or a related compound for promoting growth of a crop.
  • plant crops include monocot, dicot, members of the grass family (containing the cereals), and legumes.
  • the present invention concerns the demonstration that an administration of SA or a related compound to a plant significantly increases the photosynthetic rate thereof. More particularly, the present invention demonstrates that spraying SA or a related compound on the leaves of a plant (e.g. a foliar application) significantly increases the photosynthetic rate thereof.
  • the present invention therefore relates to compositions to increase the photosynthetic rate of plants in general.
  • the present invention relates to methods of increasing the photosynthetic rate of evolutionary divergent plants, comprising an application of an agriculturally effective dose of SA or a related phenolic compound.
  • the invention relates to an acute application of SA or related compound by a spraying of the leaves of the plants and to its effect on the growth and/or yield of plants and especially of field grown plants.
  • composition of the present invention comprising SA
  • SA was shown to significantly enhance the photosynthetic rate of evolutionary divergent plants such as soybean, corn, winter wheat, barley, canola, apple and grape, under greenhouse conditions.
  • a composition of the present invention comprising SA or a related compound was shown to significantly enhance the photosynthetic rate of soybean, corn, apple and grape.
  • the present invention has been demonstrated using evolutionary divergent plants and the invention should not be limited to these specifically exemplified plants. Indeed, it will be clear to a person skilled in the art to which the present invention pertains, that based on the evolutionary distance between the types of plants tested and their similar response to an application of SA or a related compound, that it is expected that other types of plants should respond similarly thereto by displaying an increase in the photosynthetic rate and/or yield thereof.
  • the present invention relates to compositions and methods for different plant families including but not limited to Poaceae, Cucurbitaceae, Malvaceae, Asteraceae, Chenopodiaceae, Brassicaceae, Rosaceae, Vitaceae, Fabaceae and Solonaceae.
  • crops within the scope of the present invention include without limitation corn, rice, wheat, cotton, cantaloupe, melon, cucumber, canola, lettuce, potato, apple, grape and beet.
  • crops plants also include monocot, dicot, members of the grass family (containing the cereals), and legumes.
  • the present invention relates to agricultural compositions comprising at least one SA or a related phenolic compound (and methods of using same) for promoting photosynthetic rate increases and/or increase in yield of a crop. It should be clear to a person skilled in the art that other photosynthetic rate increasing-, and/or yield-increasing compounds could be added to the compositions of the present invention.
  • the Applicant is the first to show that a composition comprising SA and related compounds can have a significant effect on the photosynthetic rate not only of legumes but also non-legumes.
  • These plants include without limitation significantly divergent plants in ten distinct families: (1) corn, the only monocot tested herein, in the family of grasses (Poaceae), which also contains the cereals; (2) cucumber and cantaloupe, the latter being a plant used horticulturally, and being slow to germinate at low temperature [its base temperature is about 14°C] (Cucurbitaceae); (3) cotton, one of the most important fibre crops on the planet (Malvaceae); (4) lettuce (Asteraceae); (5) beet (Chenopodiaceae); (6) potato, a very important crop (Solonaceae, which also includes tobacco, peppers and tomato); and two families of legumes: (7) canola, representing the mustard group (Brassicaceae);
  • Non-limiting examples thereof include tobacco, tomato, rice, sunflower and plants grown for flower production (daisy, carnation, pansy, gladiola, lilies and the like). It will be understood that the compositions can be adapted to specific crops, to meet particular needs.
  • an agricultural composition for enhancing a plant crop photosynthetic rate and/or growth thereof comprising a photosynthetic rate- promoting amount of at least one SA or related compound together with an agriculturally suitable carrier.
  • an agricultural composition for enhancing a plant crop photosynthetic rate and/or growth thereof comprising a photosynthetic rate-promoting amount of at least one SA or related compound together with an agriculturally suitable carrier.
  • a method for enhancing the photosynthetic rate and/or growth of a plant comprising a treatment of a leaf thereof with a composition comprising an agriculturally effective amount of at least one of SA or related compound in admixture with an agriculturally suitable carrier medium, wherein the effective amount enhances the photosynthetic rate and/or growth of the plant in comparison to an untreated plant.
  • salicylic acid and related compounds refers broadly to compounds related to salicylic acid or derivatives thereof. Such compounds are generally known to the skilled artisan as SA related phenolic compounds or derivatives or phenolic acids and can be found, for example, in the Merck Index, Eleventh Edition, or in similar textbooks. Non-limiting examples of such related phenolic compounds or derivatives include acetyl salicylic acid and gentisic acid. For example, the monograph numbers for SA, GA and ASA in the 11 th Edition of the Merck Index are 8300, 4290 and 873 respectively.
  • compositions of the present invention could also comprise one or more signal molecules.
  • Non-limiting examples of such compositions include agricultural compositions comprising in addition to SA: (1) at least one SA-related compound; (2) at least one plant-to- bacteria signal molecule; (3) gibberellic acid or other agents or compounds known to promote growth or fitness of plants; (4) a bacteria-to-plant signal molecule; (5) a rhizobial strain; and (6) mixtures thereof.
  • the growth-stimulating compositions of the present invention can be applied to other crop plants and especially to other warm climate adapted crop plants (plants or crops having evolved under warm conditions [i.e. tropical, subtropical or warm temperature zones] and whose metabolism is optimized for such climates).
  • warm climate adapted crop plants plants or crops having evolved under warm conditions [i.e. tropical, subtropical or warm temperature zones] and whose metabolism is optimized for such climates).
  • the photosynthesis-enhancing compositions of the present invention should find utility whenever a particular crop is grown in a condition which limits its growth. For example, whenever a particular plant crop is grown at a temperature (or under environmental parameters) which is below its optimum temperature for photosynthesis and/or growth. Such temperatures are known in the art.
  • compositions of the present invention therefore find utility, among other things, in enhancing photosynthesis of warm climate adapted crops when grown at temperatures between their base temperature for photosynthesis and/or growth.
  • the compositions of the present invention find utility in general in enhancing the photosynthesis rate and/or growth of crop plants when grown under conditions which delay or inhibit the photosynthesis and/or growth thereof.
  • inhibiting conditions include pH stress, heat-stress, and water stress.
  • compositions and methods of the present invention also can enhance growth of plants grown under optimal conditions.
  • compositions and methods of the present invention should not be limited to plants growing under sub-optimal conditions.
  • environmental conditions which inhibit or delay the bacterial-plant symbiotic relationship should be interpreted herein as designating environmental conditions which postpone or inhibit the production and exchange of signal molecules between same and include, without being limited thereto: conditions that stress the plant, such as temperature stress, water stress, pH stress as well as inhibitory soil nitrogen concentrations or fixed nitrogen.
  • “An agriculturally effective amount of a composition” for increasing the growth of crop plants in accordance with the present invention refers to a quantity which is sufficient to result in a statistically significant enhancement of the photosynthetic rate, growth and/or yield (e.g. protein or grain yield) of the plant crop as compared to the photosynthetic rate and/or growth, and/or yield of the control-treated plant crop.
  • the photosynthetic and/or yield-promoting activity of SA and related compounds are observable over a somewhat broad range of concentrations. Indeed, SA and related compounds photosynthetic rate-promoting activities can be observed at an applied concentration of about 1 2 to lO ⁇ M, preferably about 10 "3 to about 10 " 5 M and more preferably about 10 "4 M.
  • concentration about 1 2 to lO ⁇ M, preferably about 10 "3 to about 10 " 5 M and more preferably about 10 "4 M.
  • a person skilled in the art will be able to adapt the range or actual concentration of SA and related compounds in the composition to satisfy his or her need.
  • the inoculation of the composition to the plant is preferably carried-out by foliar application. This can most simply be accomplished by spraying the leaves.
  • the endogenous signal molecule salicylic acid could also be expressed at higher levels in plants so as to (indirectly) enable an increased photosynthetic rate as observed herein.
  • an increase in the photosynthetic rate could also be observed by indirect rather than by direct methods (e.g. treating a plant with a composition which enhances the SA level in the treated plant, as opposed to a direct treatment of the plant with SA).
  • Methods to increase the SA level (or related phenolic compounds) are known in the art (e.g. chemical methods and genetic engineering methods).
  • compositions of the present invention are well-known in the art.
  • the method of administration of a composition of the present invention to the leaves can be adapted by a skilled artisan to meet particular needs.
  • the time at which the compositions and methods of the present invention are effective in enhancing a plant's photosynthetic, and/or growht, and/or yield thereof, in accordance with the present invention is from as soon as a leaf is present until physiological maturity of the plant. More particularly, the administration of the composition should occur between the seedling stage and the late podfiiing stages. Thus, the administration can occur during the seedling, flowering and podfiiing stages.
  • short season condition refers herein broadly to temperatures of the middle and temperate zones and shorter. Typically, the active growing season is around 1/2 to 2/3 of the year. Short season conditions broadly refers to a frost-free period of less than half the year, often on the order of 100 frost-free days.
  • Figure 1 shows the effect of salicylic acid, over time, on the photosynthetic rate of soybean (cv Bayfield) under greenhouse conditions
  • Figure 2 shows the effect of salicylic acid on leaf area of soybean (cv OAC Bayfield) seven days after treatment under greenhouse conditions
  • Figure 3 shows the effect of salicylic acid on the photosynthetic rate of corn (cv Pioneer 3921) under greenhouse conditions;
  • Figure 4 shows the effect of salicylic acid on the photosynthetic rate of barely (cv Erasmusr) at the time of maximum effect (three days after treatment);
  • Figure 5 shows the effect of salicylic acid on the photosynthetic rate of winter wheat (cv ruby) at the time of maximum effect (three days after treatment);
  • Figure 6 shows the effect of salicylic acid on the photosynthetic rate of canola (cv Springfield) at the time of maximum effect (two days after treatment);
  • Figure 7 shows the effect of salicylic acid on the photosynthetic rate of apple (cv Empire) under field conditions at the time of maximum effect (five days after treatment);
  • Figure 8 shows the effect of salicylic acid on the photosynthetic rate of grape (cv Du Chaunac) under field conditions at the time of maximum effect (three days after treatment);
  • Figure 9 shows the effect of acetylsalicylic acid, over time, on the photosynthetic rate of soybean (cv Bayfield) under greenhouse conditions
  • Figure 10 shows the effect of acetylsalicylic acid, over time, on the photosynthetic rate of corn (cv Pioneer 3921) under greenhouse conditions
  • Figure 11 shows the effect of gentisic acid, over time, on the photosynthetic rate of soybean (cv Bayfield) under greenhouse conditions
  • Figure 12 shows the effect of gentisic acid, over time, on the photosynthetic rate of corn (cv Pioneer 3921 ) under greenhouse conditions;
  • Figure 13 shows the effect of salicylic acid, over time, on the photosynthetic rate of soybean (cv Bayfield) under field conditions.
  • Figure 14 shows the effect of salicylic acid on the photosynthetic rate of corn under field conditions at the time of maximum effect (two days after treatment).
  • the present invention therefore demonstrates that the application of SA to the leaves of evolutionary divergent plants increases their photosynthetic rates, leading to increased dry matter production.
  • the present invention provides a new method (and compositions therefor) for increasing photosynthesis and for increasing yield of plants.
  • the data show that an increase in photosynthesis and in yield following SA treatment of different plants, is also observable under field conditions.
  • Salicylic acid (spray applied) was evaluated for its effect on the photosynthetic rates of a number of crop plants: soybean (Fabaceae); corn, winter wheat, barley poaceae); canola (Brassicaceae); apple (Rosaceae); and grape (Vitaceae).
  • Acetyl salicylic acid (ASA) and gentisic acid were also tested for their ability to increase the photosynthetic rates of soybean and corn.
  • SA increased the photosynthetic rate of all the plants tested.
  • the extent of the responses were shown to be dependent on the plant species and the SA concentration.
  • SA caused 10- 20% increases in photosynthesis under both greenhouse and field conditions.
  • SA application resulted in increased stomatal aperture, but not in increase in leaf internal CO 2 concentration, the data suggest that there was an increase in CO 2 uptake by chloroplasts, which led to increased stomatal opening. Similar results were observed with actetyl salicylic acid and gentisic acid. Under field conditions SA spray was tested on soybean plants.
  • SA application enhanced grain yield by 51.2 - 71.3%.
  • SA also increased the photosynthetic rates of field- grown corn, apple and grape.
  • the data illustrate that SA could be used to increase the productivity of soybean, and suggest effectiveness in a wide range of crops.
  • phenolic acids related to SA can increase plant photosynthetic rates in the same way as SA.
  • Seeds of rice (Oryza sativa cv Cypress), canola (Brassica napus cv Springfield), corn (Zea mays cv Pioneer 3921), winter wheat (Triticum aesitivum cv Ruby) and barley (Hordeum vulgare cv Whyr) were surface sterilized with 2% sodium hypochlorite for 3-4 min, washed with several changes of sterile distilled water and planted in plastic pots (15 cmdia) containing promix (Premier Brands Inc., New Rochelle, NY, USA ). Spray treatments of salicylic acid
  • Salicylic acid (analytical grade) was purchased from Anachemia Science (Montreal, Canada). Concentrations of SA (10 3 M - 10 "5 M) were made with distilled water containing 0.02% Tween 20 after initially dissolving it in 250 ⁇ l dimethylsulfoxide (DMSO). A control treatment, containing 0.02% Tween 20, but no SA was also applied. The pH or the solution was adjusted to 6.5 with 1 N potassium hydroxide. Since the rates of growth and development differed among the plant species used in the experiments, spray treatment was conducted at different times after planting, in general, the spray was applied when the plants were big enough to allow easy measurements of leaf photosynthetic rates.
  • DMSO dimethylsulfoxide
  • soybean 21 days after planting (DAP), corn 25 DAP, winter wheat 16 DAP, barley 16 DAP and canola 30 DAP.
  • the plants were sprayed with SA solutions until dripping.
  • the sprays were applied with an atomizer (Nalgene, USA). Each plant required 2-3 mL of spray solution.
  • Each treatment was replicated at least five times and organized on the green house bench in a randomized complete block design. Each experiment (with each crop species) was repeated at least twice.
  • Spray treatment of ASA or gentisic acid Acetyl salicylic acid (Acros organics, New Jersey, USA) and gentisic acid (Sigma Chemical Co., St.
  • Photosynthesis was recorded every 24h using a Li-Cor 6400 portable photosynthesis system (Li-Cor Inc., Lincoln, Kansas, USA) for 6 days after spraying.
  • Li-Cor Inc. Lincoln, California, USA
  • the photosynthetic rate of the second nodal leaf from the top was recorded while in the other species the photosynthetic rate was measured for the top-most fully expanded leaf.
  • Soybean and corn plants were harvested seven days after SA treatment and dried at 8CC for 48 h. Data were analyzed with the Statistical Analysis System (SAS Inc., NC, USA). Multiple means comparisons were conducted with an ANOVA protected LSD test, thus, the LSD test was not performed if the ANOVA test did not indicate the presence of differences due to treatment.
  • the soybean experiment was conducted at the Lods Agronomy Research Centre, McGill University, Macdonald Campus, Ste-Anne- de-Bellevue, Quebec, Canada, between June and September, 1999. A randomized complete block design with three blocks was followed. The plot size was 2 x 4 m with a row to row spacing of 25cm and 10 cm between plants within a row. Seeds of soybean (cv OAC Bayfield), treated with commercial Bradyrhizobium japonicum inoculant (Bios Agriculture Inc., Quebec, Canada) at the rate of 3 g per kilogram of seed, were hand planted.
  • the corn experiment was carried out at the Lods Agronomy Research Centre Macdonald Campus of McGill University. Single row corn plots (Pioneer 3921) were established during the 1999 and 2000 cropping seasons. The rows were 75 cm apart and there was an average of 20 cm between plants. The plants were sprayed at 40 DAP. Photosynthetic rates were recorded each day for 5 days after the spray application. However, multiple sprays of SA on corn were not possible due to limitations of SA supply, and because onlysingle row plots were used. Yields were not recorded. Field Data collection As with the indoor experiments, photosynthetic readings were taken every day for five days after the application of SA. For soybean, additional developmental and agronomic data were collected. The first harvest was conducted at 25 days after the first spray treatment.
  • SA spray increased the photosynthetic rate of soybean (Fig. 1).
  • the photosynthetic rate increased from day 1 u n to day 4 or 5 after which it decreased, reaching levels not different from the control plants by day 6.
  • SA at 10 "5 M resulted in higher photosynthetic rates than at 10 "3 M.
  • SA treatments caused an increase in the leaf area of soybean at seven days after treatment (Fig.2).
  • SA treatment also enhanced the photosynthetic rates of non- legumes: corn (Fig. 3), barley (Fig. 4), winter wheat (Fig. 5) andcanola (Fig. 6).
  • the days for maximum increase and the most effective concentration of SA varied among crop species. The higher SA concentration was more effective in enhancing photosynthetic rate than the lower concentration. A 10-20% increase in photosynthetic rate was common. The increase in photosynthetic rate was always accompanied by concomitant increases in stomatal conductance and transpiration, while the intercellular CO 2 concentration was unaffected by the treatments (Figs. 3, 4, 5 and 6).
  • Acetyl salicylic acid does not occur naturally in plants (Pridham, 1965), and it has been found that acetylsalicylic acid is readily converted into salicylic acid in plants (Groenewald and Westhuizen, 1998). Without being limited to a particular theory, it seems probable that applied ASA was converted to SA, and that the SA was responsible for the observed physiological effects.
  • Table 2 shows the effect of foliar spray of salicylic acid on yield of soybean during the year 2000.
  • Salicylic acid enhanced all the yield components, SA at 10 "4 M showed the maximum effect.
  • SA lO ⁇ M improved the yield by about 40%.
  • the increase in yield was due to the increase in the number of pods/ plant.
  • SA spray caused small decreases in 100-seed weight, which were overcome by the larger increases in the number of pods per plant.
  • Evans LT 1980, American Scientist 68:388-397. Evans LT, 1998, Feeding the ten billions: Plant and population growth.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
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Abstract

La présente invention concerne l'agriculture. Plus particulièrement elle concerne un procédé d'accroître la photosynthèse dans une plante. L'invention concerne en outre un procédé d'accroître la photosynthèse et/ou le rendement dans des plantes comportant une exposition de celles-ci à une quantité efficace d'acide salicylique, et des compositions pour la mise en oeuvre du procédé. L'invention concerne également une composition agricole permettant d'améliorer le taux de photosynthèse et/ou de croissance des cultures comprenant une quantité d'acide salicylique (SA) ou de composés phénoliques apparentés favorisant le taux de photosynthèse associée à un excipient acceptable dans le domaine agricole.
PCT/CA2000/001191 1999-10-08 2000-10-06 L'acide salicylique et des composes phenoliques apparentes pour accroitre la photosynthese chez les plantes WO2001026464A1 (fr)

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AU77666/00A AU7766600A (en) 1999-10-08 2000-10-06 Salicyl acid and related phenolic compounds for increasing photosynthesis in plants

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CA 2285729 CA2285729A1 (fr) 1999-10-08 1999-10-08 Methode pour augmenter la photosynthese des plantes, comprenant une exposition de ces dernieres a de l'acide salicylique et compositions pour cette methode
CA2,285,729 1999-10-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118508A2 (fr) * 2004-06-04 2005-12-15 Jihoceská Univerzita V Ceskych Budejovicích Preparation pour l'induction de production accrue de composes bioactifs dans des plantes et son utilisation
JP2006158283A (ja) * 2004-12-07 2006-06-22 Sysmex Corp 生体試料処理液、生体試料処理液を用いた核酸増幅反応用試料調製方法及び標的核酸検出方法。
WO2016028177A1 (fr) 2014-08-21 2016-02-25 Uniwersytet Przyrodniczy W Poznaniu Biostimulant liquide renforçant la résistance des plantes agricoles aux conditions de stress

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100304A (en) * 1979-01-24 1980-07-31 Japan Synthetic Rubber Co Ltd Plant growth regulator
SU897194A1 (ru) * 1980-05-14 1982-01-15 Ордена Трудового Красного Знамени Ташкентский Институт Инженеров Ирригации И Механизации Сельского Хозяйства Стимул тор роста хлопчатника
JPS57212105A (en) * 1981-06-23 1982-12-27 Chugai Pharmaceut Co Ltd Plant growth regulating agent
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WO2005118508A3 (fr) * 2004-06-04 2006-10-26 Jihoceska Univerzita V Ceskych Preparation pour l'induction de production accrue de composes bioactifs dans des plantes et son utilisation
JP2006158283A (ja) * 2004-12-07 2006-06-22 Sysmex Corp 生体試料処理液、生体試料処理液を用いた核酸増幅反応用試料調製方法及び標的核酸検出方法。
JP4719455B2 (ja) * 2004-12-07 2011-07-06 シスメックス株式会社 直接核酸増幅方法用生体試料処理液および直接核酸増幅方法
WO2016028177A1 (fr) 2014-08-21 2016-02-25 Uniwersytet Przyrodniczy W Poznaniu Biostimulant liquide renforçant la résistance des plantes agricoles aux conditions de stress

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