CN117178990A - Novel application of novel compound in improving drought stress resistance of plants - Google Patents
Novel application of novel compound in improving drought stress resistance of plants Download PDFInfo
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- CN117178990A CN117178990A CN202311149389.1A CN202311149389A CN117178990A CN 117178990 A CN117178990 A CN 117178990A CN 202311149389 A CN202311149389 A CN 202311149389A CN 117178990 A CN117178990 A CN 117178990A
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- aminobutyric acid
- drought stress
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- 230000008641 drought stress Effects 0.000 title claims abstract description 28
- 150000001875 compounds Chemical class 0.000 title claims abstract description 15
- BTCSSZJGUNDROE-UHFFFAOYSA-N gamma-aminobutyric acid Chemical compound NCCCC(O)=O BTCSSZJGUNDROE-UHFFFAOYSA-N 0.000 claims abstract description 70
- OGNSCSPNOLGXSM-UHFFFAOYSA-N (+/-)-DABA Natural products NCCC(N)C(O)=O OGNSCSPNOLGXSM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229960003692 gamma aminobutyric acid Drugs 0.000 claims abstract description 39
- IXVMHGVQKLDRKH-VRESXRICSA-N Brassinolide Natural products O=C1OC[C@@H]2[C@@H]3[C@@](C)([C@H]([C@@H]([C@@H](O)[C@H](O)[C@H](C(C)C)C)C)CC3)CC[C@@H]2[C@]2(C)[C@@H]1C[C@H](O)[C@H](O)C2 IXVMHGVQKLDRKH-VRESXRICSA-N 0.000 claims abstract description 31
- IXVMHGVQKLDRKH-KNBKMWSGSA-N brassinolide Chemical compound C1OC(=O)[C@H]2C[C@H](O)[C@H](O)C[C@]2(C)[C@H]2CC[C@]3(C)[C@@H]([C@H](C)[C@@H](O)[C@H](O)[C@@H](C)C(C)C)CC[C@H]3[C@@H]21 IXVMHGVQKLDRKH-KNBKMWSGSA-N 0.000 claims abstract description 24
- 239000000243 solution Substances 0.000 claims description 26
- 235000014443 Pyrus communis Nutrition 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- IXVMHGVQKLDRKH-YEJCTVDLSA-N (22s,23s)-epibrassinolide Chemical compound C1OC(=O)[C@H]2C[C@H](O)[C@H](O)C[C@]2(C)[C@H]2CC[C@]3(C)[C@@H]([C@H](C)[C@H](O)[C@@H](O)[C@H](C)C(C)C)CC[C@H]3[C@@H]21 IXVMHGVQKLDRKH-YEJCTVDLSA-N 0.000 claims description 7
- 150000001647 brassinosteroids Chemical class 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 24
- 241000220324 Pyrus Species 0.000 description 14
- 230000000694 effects Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- WSMYVTOQOOLQHP-UHFFFAOYSA-N Malondialdehyde Chemical compound O=CCC=O WSMYVTOQOOLQHP-UHFFFAOYSA-N 0.000 description 11
- 229940118019 malondialdehyde Drugs 0.000 description 11
- 102000003992 Peroxidases Human genes 0.000 description 9
- 102000019197 Superoxide Dismutase Human genes 0.000 description 9
- 108010012715 Superoxide dismutase Proteins 0.000 description 9
- -1 gamma-aminobutyric acid compound Chemical class 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 108040007629 peroxidase activity proteins Proteins 0.000 description 7
- 229930002875 chlorophyll Natural products 0.000 description 6
- 235000019804 chlorophyll Nutrition 0.000 description 6
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 6
- 230000000243 photosynthetic effect Effects 0.000 description 6
- 238000010306 acid treatment Methods 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 244000088401 Pyrus pyrifolia Species 0.000 description 3
- 235000011400 Pyrus pyrifolia Nutrition 0.000 description 3
- 244000173166 Pyrus ussuriensis Species 0.000 description 3
- 235000011572 Pyrus ussuriensis Nutrition 0.000 description 3
- 238000003973 irrigation Methods 0.000 description 3
- 230000002262 irrigation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004792 oxidative damage Effects 0.000 description 3
- 229910052902 vermiculite Inorganic materials 0.000 description 3
- 239000010455 vermiculite Substances 0.000 description 3
- 235000019354 vermiculite Nutrition 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 150000002596 lactones Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000195632 Dunaliella tertiolecta Species 0.000 description 1
- 102000018697 Membrane Proteins Human genes 0.000 description 1
- 108010052285 Membrane Proteins Proteins 0.000 description 1
- 244000185180 Pyrus betulifolia Species 0.000 description 1
- 235000006877 Pyrus betulifolia Nutrition 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000037149 energy metabolism Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000037356 lipid metabolism Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000008723 osmotic stress Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000021017 pears Nutrition 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Cultivation Of Plants (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a novel application of a novel compound in improving drought stress resistance of plants, and relates to the technical field of plant production. The novel compound consists of brassinolide and gamma-aminobutyric acid, and the research discovers that the combined application of brassinolide and gamma-aminobutyric acid can improve the drought stress resistance of plants, and particularly can obviously improve the drought stress resistance of the Duke.
Description
Technical Field
The invention relates to the technical field of plant production, in particular to a novel application of a novel compound in improving drought stress resistance of plants.
Background
During the growth and development of plants, sufficient water supply is needed, about 1/3 of land areas in the world are in arid and semiarid states, and climatic drought occurs in other land areas. The problems of water resource shortage are exacerbated by world population increases, over-exploitation, water resource pollution, and the like. Drought is therefore the single most damaging environmental stress, and the loss of crop yield is more severe than the rest of the stress.
Drought stress can lead to reduced plant water utilization efficiency, relative water content and stomatal conductance, cause osmotic stress, influence the absorption of water and mineral nutrition by plants, and lead to cell dehydration; the growth and development of plants can be seriously influenced by the oxidative damage of proteins, membrane lipids and other macromolecules of the plants caused by the induction of the excessive accumulation of active oxygen. Plants when subjected to drought stress exhibit reduced leaf area, reduced photosynthesis, inhibited energy and lipid metabolism, etc.; hydrogen peroxide (H) 2 O 2 ) Superoxide anion (O) 2- ) And the Malondialdehyde (MDA) content increases significantly, resulting in a substantial decrease in fruit yield and quality.
At present, the influence of drought stress on plants is relieved mainly by cultivating drought-resistant varieties, constructing horizontal terraces, strip fields, covering with mulching films, straw or gravel, artificial rainfall and the like. However, the cultivation of drought-resistant varieties is time-consuming and labor-consuming, and long-time large-scale screening and breeding are required to discover genotypes suitable for planting in drought areas; the construction of horizontal terraces and strip fields has many requirements on the topography of the cultivated land, the cost is high, the mulching films and the like are used for covering, the cost is high, and some mulching films are difficult to recover and soil pollution is easy to cause.
Disclosure of Invention
The invention aims to provide a novel application of a novel compound in improving drought stress resistance of plants so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an application of a compound in improving drought stress resistance of plants, wherein the compound consists of brassinolide and gamma-aminobutyric acid.
As a further preferred aspect of the present invention, the mass ratio of brassinolide to gamma-aminobutyric acid is 1:1000.
As a further preferred aspect of the present invention, the plant is a pyrus.
As a further preferred aspect of the invention, the complex is applied by formulating the complex as a solution, wherein the concentration of brassinolide in the solution is 0.10mg/L and the concentration of gamma-aminobutyric acid is 0.10g/L.
As a further preferred aspect of the invention, the complex is formulated for application as a solution, which is obtained by mixing 0.2mg/L of a brassinosteroid ethanol solution with 0.2g/L of an aqueous gamma-aminobutyric acid solution in a volume ratio of 1:1.
As a further preference of the invention, the drought stress is moderate drought stress. The water content of the soil subjected to moderate drought stress is 45% -55%.
The invention discloses the following technical effects:
the invention provides an application of brassinolide and gamma-aminobutyric acid compound in improving drought stress resistance of plants, and the combined application of brassinolide and gamma-aminobutyric acid compound can improve the drought stress resistance of plants, and especially can obviously improve the drought stress resistance of Duke.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
Example 1
Sowing the birch-leaf pear seeds soaked in deionized water for 24 hours on nutrient soil and vermiculite 1:1, culturing in a culture room with a light intensity of 6Klux at 25 ℃ for two weeks, transferring to vermiculite for culturing, treating with half nutrient solution for one week, and treating with full nutrient solution for one week to obtain the seedling of fructus Pyri.
Preparing 0.2mg/L of brassinolide ethanol solution and 0.2g/L of gamma-aminobutyric acid aqueous solution respectively, and mixing 0.2mg/L of brassinolide solution and 0.2g/L of gamma-aminobutyric acid solution into brassinolide and gamma-aminobutyric acid compound for later use.
Mixing nutrient soil with vermiculite 1:1, mixing and filling into small flowerpots with the length of 7 multiplied by 7cm, transplanting pear seedlings with consistent growth vigor into the flowerpots respectively, and setting 5 groups of treatment: one group is a control group, and the water content of the soil of the control group is controlled to be 65% -75%; performing moderate drought treatment on the two groups (drought treatment groups), controlling the water content of the soil to be 45% -55% of the saturated water content, weighing and calculating consumed water every other day, and supplementing corresponding clear water to maintain the water content of the soil; three groups (brassinosteroids treatment groups) were subjected to a moderate drought treatment and sprayed with 0.2mg/L brassinosteroids solution; four groups (gamma-aminobutyric acid treatment groups) were subjected to moderate drought treatment and sprayed with 0.2g/L gamma-aminobutyric acid solution; five groups (brassinosteroids and gamma-aminobutyric acid complex treatment group) were subjected to moderate drought treatment while sprinkling brassinosteroids and gamma-aminobutyric acid complex (0.2 mg/L brassinosteroids ethanol solution +0.2g/L gamma-aminobutyric acid aqueous solution, and the volume of the two sprinkling solutions was 1:1).
Wherein, the drought treatment modes of three groups to five groups are the same as those of two groups. The frequency of sprinkling irrigation of the three groups to the five groups is 1 time/4 d, and the total frequency is 10 times.
The plant height, fresh weight, dry weight, wilting rate, chlorophyll content, photosynthetic rate, MDA, superoxide dismutase (SOD), peroxidase (POD) activity of each group of plants before treatment (0 d) and after treatment (40 d) were measured and statistically analyzed, and the test was repeated three times or more.
After drought treatment for 40d, the control group of the pyrus ussuriensis seedlings grow well, while in the treatment group, the pyrus ussuriensis seedlings without exogenous substances grow weakly, and the leaf withering and wilting are obvious; the effect of relieving the drought of the pear by applying the compound solution of the brassinolide and the gamma-aminobutyric acid is superior to that of independently applying the brassinolide or the gamma-aminobutyric acid.
The data for each set of technical effects are as follows:
the plant height of the control group of the Du pear is 5.70cm, the fresh weight is 5.20g, the dry weight is 1.83g, the wilting rate is 0%, and the photosynthetic rate is 8.21 mu mol m -2 ·s -1 The method comprises the steps of carrying out a first treatment on the surface of the The plant height of the drought treatment group Dunaliella tertiolecta is 3.30cm, the fresh weight is 1.20g, the dry weight is 0.46g, the wilting rate is 75%, and the photosynthetic rate is 3.71 mu mol m -2 ·s -1 The method comprises the steps of carrying out a first treatment on the surface of the The plant height of the pear after being singly applied with brassinolide is 4.50cm, the fresh weight is 3.20g, the dry weight is 1.36g, the wilting rate is 33 percent, and the photosynthetic rate is 5.70 mu mol.m -2 ·s -1 The method comprises the steps of carrying out a first treatment on the surface of the The plant height of the pyrus ussuriensis after being singly applied with the gamma-aminobutyric acid is 3.70cm, the fresh weight is 2.64g, the dry weight is 1.43g, the wilting rate is 46%, and the photosynthetic rate is 4.80 mu mol.m -2 ·s -1 The method comprises the steps of carrying out a first treatment on the surface of the Compound solution of brassinolide and gamma-aminobutyric acidThe plant height of the post-treatment pyrus is 5.00cm, the fresh weight is 3.75g, the dry weight is 1.17g, the wilting rate is 25%, and the photosynthetic rate is 7.40 mu mol m -2 ·s -1 。
In addition, after drought stress treatment 40 d: the chlorophyll content of the leaves of the control group of the pyrus is 38mg/g W; compared with a control group, the chlorophyll content of the leaves of the drought treatment group is obviously reduced to 24mg/g FW and is reduced by 36.84%; the chlorophyll content of the leaves of the brassinolide treatment group is reduced to 29.40mg/g FW, which is reduced by 22.63% compared with the control group; the chlorophyll content of the leaves of the gamma-aminobutyric acid treatment group is reduced to 26.12mg/g FW, which is reduced by 31.26% compared with the control group; and the chlorophyll content of the leaves of the rape lactone and gamma-aminobutyric acid compound treatment group is reduced to 32mg/g FW, which is reduced by 15.79 percent compared with the control group. The compound solution of brassinolide and gamma-aminobutyric acid can obviously improve the growth condition of the seedlings of the pyrus pyrifolia under drought stress, and the effect of the compound solution of brassinolide and gamma-aminobutyric acid on relieving moderate drought stress of the pyrus pyrifolia is superior to that of single spray irrigation brassinolide or gamma-aminobutyric acid.
Studies have shown that MDA is an index for measuring the oxidative damage degree of plants, and MDA content is high, namely the oxidative damage of plants is serious. By measuring the content thereof, it was found that after drought stress treatment for 40 d: the endogenous MDA content of the control group of the pear seedlings is increased from 21.13nmol/g FW to 22.70nmol/g FW by 7.43%; the endogenous MDA content of the pear seedlings in the drought treatment group is obviously increased from 20.20nmol/g FW to 38.61nmol/g FW, and 91.14 percent; the MDA content of the brassinolide treatment group pyrus is increased from 20.72nmol/g FW to 30.94nmol/g FW, which is increased by 49.32%; in the gamma-aminobutyric acid treatment group, the MDA content is increased from 21.27nmol/g FW to 33.23nmol/g FW by 56.23%; the MDA content of the rape lactone and gamma-aminobutyric acid compound treatment group is increased from 20.55nmol/g FW to 26.82nmol/g FW by about 30.51 percent, and is reduced by 30.54 percent compared with that of the drought treatment group without exogenous substances. The exogenous spray irrigation brassinosteroids and gamma-aminobutyric acid composite solution can effectively reduce the content of endogenous MDA under drought stress.
By measuring the activity of SOD and POD enzymes, it was found that after drought treatment for 40 d: the SOD and POD activities of the control group of the pear seedlings are 147.30Unit/g FW and 14.50Unit/g FW respectively; the activity of SOD and POD in the drought treatment group is 93.50Unit/g FW and 5.50Unit/g FW respectively; the activity of SOD and POD of brassinolide treated group is increased by 54.30% and 61.80% respectively compared with that of drought treated group; the SOD and POD activities of the gamma-aminobutyric acid treatment group are respectively increased by 38.12 percent and 47.30 percent relative to the drought treatment group; the activity of the SOD and the POD of the brassinosteroid and gamma-aminobutyric acid compound treatment group is obviously increased by 73.70 percent and 94.54 percent respectively, which indicates that the brassinosteroid and gamma-aminobutyric acid compound solution can increase the antioxidant capacity of the pear seedlings by enhancing the activity of the SOD and the POD enzyme.
In conclusion, the research of the invention discovers that the application of the brassinolide and gamma-aminobutyric acid composite solution can obviously improve the drought stress resistance of pears.
The invention compares the application effect of brassinolide, gamma-aminobutyric acid and the compound thereof under moderate drought stress of the pear. The effect of the brassinosteroid and gamma-aminobutyric acid compound on relieving the drought of the pyrus pyrifolia is proved to be superior to that of independently applying brassinosteroid or gamma-aminobutyric acid, and the application of the concentration of the brassinosteroid and the gamma-aminobutyric acid is also a key factor influencing the drought resistance.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (7)
1. The application of the compound in improving drought stress resistance of plants is characterized in that the compound consists of brassinolide and gamma-aminobutyric acid.
2. The use according to claim 1, wherein the mass ratio of brassinosteroids to gamma-aminobutyric acid is 1:1000.
3. The use according to claim 1, wherein the plant is a pear.
4. The use according to claim 1, wherein the complex is formulated for administration as a solution having a concentration of brassinolide of 0.10mg/L and a concentration of gamma-aminobutyric acid of 0.10g/L.
5. The use according to claim 1, wherein the complex is formulated for administration as a solution obtained by mixing 0.2mg/L of an ethanol solution of brassinosteroid with 0.2g/L of an aqueous solution of gamma-aminobutyric acid in a volume ratio of 1:1.
6. The use of claim 1, wherein the drought stress is moderate drought stress.
7. The use according to claim 6, wherein the soil with moderate drought stress has a moisture content of 45% -55%.
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