CN104388356B - Sang Puxun streptomycete bacterial strains, its separation method and application - Google Patents

Sang Puxun streptomycete bacterial strains, its separation method and application Download PDF

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CN104388356B
CN104388356B CN201410705973.5A CN201410705973A CN104388356B CN 104388356 B CN104388356 B CN 104388356B CN 201410705973 A CN201410705973 A CN 201410705973A CN 104388356 B CN104388356 B CN 104388356B
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puxun
sang
bacterial strains
culture medium
streptomyces
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CN104388356A (en
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胥维昌
孙慧
李秀颖
李旭
李丹
盛志
王宇
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Shenyang Chemical Research Institute Co Ltd Ningxia Branch
Shenyang Research Institute of Chemical Industry Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20Bacteria; Culture media therefor
    • C12N1/205Bacterial isolates
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12RINDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
    • C12R2001/00Microorganisms ; Processes using microorganisms
    • C12R2001/01Bacteria or Actinomycetales ; using bacteria or Actinomycetales
    • C12R2001/465Streptomyces
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N63/00Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20Bacteria; Culture media therefor

Abstract

The present invention relates to microbial pesticide technical field, a kind of Sang Puxun streptomycete bacterial strains and its separation method and cultural method are specifically provided, and the Sang Puxun Streptomyces cultures as obtained by the cultural method, and application and the agricultural chemicals containing them of the Sang Puxun streptomycete bacterial strains and Sang Puxun Streptomyces cultures.The Sang Puxun streptomycete bacterial strains, the entitled Sang Puxun streptomycetes of preservation (Streptomyces sampsonii) SY FX 31, are preserved in China typical culture collection center, deposit number is:CCTCC M2014516, bacterial strain 16S rRNA gene orders can prevent and treat plurality of plant diseases as shown in sequence table SEQ ID No.1, and the speed of growth is fast, sporulation quantity is big, antimicrobial spectrum is wide, is colonized rapidly in soil and plant physical efficiency.

Description

Sang Puxun streptomycete bacterial strains, its separation method and application
Technical field
The present invention relates to microbial pesticide technical field, and in particular to a kind of Sang Puxun streptomycete bacterial strains and its separation method With application.
Background technology
Microbial pesticide is not likely to produce drug-fast characteristic because its is green, in terms of controlling crop diseases and insect pests To more and more extensive attention and application.The promotion and application technology of microbial pesticide is just gradually tending to be ripe, and country is in biology The policy support dynamics of prevention and control field increases year by year, and the use of microbial pesticide can overcome pollution of the chemical pesticide to ecological environment And the residual in agricultural byproducts Pesticides is reduced, the quality and price of agricultural byproducts are lifted, not only with environmental benefit but also with warp Ji benefit.
At present, the major microorganisms pesticide species that in the market is promoted concentrate on bacillus and pseudomonas.Strepto- Pseudomonas is a kind of microorganism Pseudomonas that can produce antibiotic, is in the kind that US and European is registered as agricultural fungicidal class Streptomyces griseoviridis and Streptomyces lydicus, streptomyces are expected to turn into after bacillus With it is another kind of in the wide variety of microbial pesticide of field of biological control after pseudomonas.
The content of the invention
The invention provides it is a kind of it is new can prevent and treat plurality of plant diseases, and the speed of growth is fast, sporulation quantity is big, antimicrobial spectrum Extensively, the Sang Puxun streptomycete bacterial strains and its separation method and cultural method colonized rapidly in soil and plant physical efficiency, and pass through this Sang Puxun Streptomyces cultures obtained by cultural method, and the Sang Puxun streptomycete bacterial strains and Sang Puxun Streptomyces cultures should With with the agricultural chemicals containing them.
The first aspect of the present invention provides a kind of Sang Puxun streptomycete bacterial strains (Streptomyces sampsonii) SY- FX-31, the entitled Sang Puxun streptomycetes SY-FX-31 of preservation (Streptomyces sampsonii), depositary institution:Chinese allusion quotation Type culture collection, depositary institution address:Wuhan University's Life Science College, preservation date are:On October 27th, 2014, Deposit number is:CCTCC M 2014516, bacterial strain 16S rRNA gene orders are as shown in sequence table SEQ ID No.1.
The bacterial strain has following biological characteristics:(1) in Gause I culture basal growth, mycelia is light yellow, with culture Time lengthening, mycelia darken.(2) protein peptone culture basal growth, mycelia khaki, bacterium colony and culture medium junction are being examined There is orange pigment.(3) maize powder medium growth mycelia it is light yellow, after gradually become buff, be in Liquid Culture Light yellow hypha body.
Its 16S rRNA gene order sequencing result shows that the 16S rRNA gene orders of SY-FX-31 bacterial strains are sequence table Nucleotide sequence in SEQ ID No.1.Carried out according to sequencing result and Genbank Streptomyces 16S rRNA gene orders same Source property compares, the results showed that Sang Puxun streptomycete of the SY-FX-31 Pseudomonas in streptomyces (Streptomyces) (Streptomyces sampsonii)。
The second aspect of the present invention provides the separation method for separating above-mentioned Sang Puxun streptomycete bacterial strains, its step bag Include:S1, soil is gathered from river bed, add sterilized water soil is mixed with sterilized water after vibrating and scatter, it is static to make its clarification, take supernatant Liquid;S2, Sang Puxun streptomycete bacterial strains are isolated and purified using plate streak:Supernatant obtained by step S1 is diluted, using difference The dilution of diluted concentration is coated on Gause I culture medium flat plate after 10-40 DEG C is cultivated 2-7d, the separation of picking single bacterium colony Purify get Sang Puxun streptomycete bacterial strains;Wherein, the composition of Gause I culture medium includes:Soluble starch, KNO3、NaCl、 K2HPO4、FeSO4、MgSO4And water, pH value 7.4-7.6.
Wherein, plate streak refers to the different cells in microorganism mixed in together or same micropopulation to use Oese is diluted to obtain the more individual cells being independently distributed on plating medium surface by sectional streak, raw after culture Length is multiplied into single bacterium colony, generally this single bacterium colony as the purebred of microorganism to be separated.Sometimes this single bacterium colony not all by Individual cells breeding, can using separate repeatedly repeatedly obtain it is purebred.Its principle is to train microbiological specimens in solid Foster primary surface repeatedly makees " by putting to line " dilution and reaches separation purpose.The form of line has a variety of, is specifically as follows one The cell that individual flat board is divided into four different areas is rule, and the firstth area (A areas) area is minimum, the bacterium source as bacterium to be separated Area, second and the 3rd area (B, C area) be the transition region diluted step by step, the 4th area (D areas) is then key area, and Shi Gai areas occur big The single bacterium colony purebred use for selection of amount.In order to obtain more typical single bacterium colony, the distribution of four area's areas should be D > on flat board C > B > A.
The third aspect of the present invention provides the cultural method of above-mentioned Sang Puxun streptomycete bacterial strains, and its step includes S1, will be upper Sang Puxun streptomycete bacterial strains are stated in storage medium, 12-24h is activated at 25-33 DEG C;S2, by the bacterial strain after activation in kind In sub- culture medium, in 25-33 DEG C, 100-150r/min is cultivated 1-2 days, obtains seed liquor;S3, by gained seed liquor with volume hundred Point content 4-8% inoculative proportions are inoculated in fermentation medium, and at 25-33 DEG C, 100-150r/min shaken cultivations obtain for 2-4 days Zymotic fluid;Wherein, preservation isolation medium is Gause I culture medium, and the composition of the Gause I culture medium includes:It is solvable Property starch, KNO3、NaCl、K2HPO4、FeSO4、MgSO4And water, pH value 7.4-7.6;Seed culture medium is trained to examine protein peptone Base is supported, the composition for examining protein peptone culture medium includes:Sucrose, peptone, FeSO4、MgSO4、KCl、K2HPO4And water;Hair Ferment culture medium is maize powder medium, and the composition of the maize powder medium includes:Corn flour, sucrose, peptone, starch, ferment Female cream, NaCl, K2HPO4、MgSO4、CaCO3And water.
The fourth aspect of the present invention provides a kind of Sang Puxun Streptomyces cultures, is made by above-mentioned cultural method.
The fifth aspect of the present invention provides above-mentioned Sang Puxun streptomycete bacterial strains and/or its culture in controlling plant diseases Application.
The sixth aspect of the present invention provides a kind of agricultural chemicals, and the agricultural chemicals includes above-mentioned Sang Puxun streptomycete bacterial strains and/or its training Support thing.
The Sang Puxun streptomycetes (Streptomyces sampsonii) of gained of the invention belong to streptomyces, by interior Biological activity determination finds that it has inhibitory action to the several plant pathogen of gibberella saubinetii, rice banded sclerotial blight etc. ten.And found The Sang Puxun streptomycete speeds of growth it is fast, sporulation quantity is big, antimicrobial spectrum is wide, colonized rapidly in soil and plant physical efficiency.Can not only Plurality of plant diseases is prevented and treated, and plant resistance to environment stress can be improved, positive role is respectively provided with to improving crop yield and lifting quality, It is a kind of biocontrol strains for having application prospect.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only explaining The present invention, it is not intended to limit the present invention.
The invention provides a kind of Sang Puxun streptomycete bacterial strains, the entitled Sang Puxun streptomycetes (Streptomyces of preservation Sampsonii) SY-FX-31, is preserved in China typical culture collection center, and deposit number is:CCTCC M 2014516, should Bacterial strain 16S rRNA gene orders belong to streptomyces as shown in sequence table SEQ ID No.1, can not only prevent and treat various plants Disease, and plant resistance to environment stress can be improved, positive role is respectively provided with to improving crop yield and lifting quality, is that one kind has application The biocontrol strains of prospect.
Invention also provides the separation method for separating above-mentioned Sang Puxun streptomycete bacterial strains, its step includes:S1, Gather soil from river bed, add sterilized water to make soil mix with sterilized water to scatter after vibrating, be specifically as follows soil is added it is built-in In the container of sterilized water and bead, soil is set to scatter in vibration a period of time on shaking table, vibration end is static to make its clarification, takes Supernatant.S2, Sang Puxun streptomycete bacterial strains are isolated and purified using plate streak:It is specially that supernatant obtained by step S1 is dilute Release, specific dilution process can use plus the dilution of sterilized water vortex mixed;It is coated on using the dilution of different diluted concentrations On Gause I culture medium flat plate, be specifically as follows each concentration be coated with 3 it is parallel, after 10-40 DEG C is cultivated 2-7d, picking list Bacterium colony isolates and purifies get Sang Puxun streptomycete bacterial strains.Wherein, the composition of Gause I culture medium includes:Soluble starch, KNO3、 NaCl、K2HPO4、FeSO4、MgSO4And water, pH value 7.4-7.6.
Wherein, Sang Puxun streptomycete bacterial strains are in Gause I culture basal growth, and mycelia is light yellow, as incubation time prolongs Long, mycelia darkens.
It is preferred that the composition of Gause I culture medium includes:Soluble starch 5-40g, KNO30.1-5g, NaCl 0.1- 3g, K2HPO4·3H2O 0.1-3g, FeSO4·7H2O 0.01-1g, MgSO4·7H2O 0.1-3g and water 1-10L.
It is preferred that three concentration of dilution, the concentration of dilution includes supernatant diluting 10-2、10-3、10-4Times, it is uniform respectively It is coated on Gause I culture medium flat plate.
Invention also provides the cultural method of above-mentioned Sang Puxun streptomycete bacterial strains, its step includes S1, by above-mentioned mulberry General inferior streptomycete bacterial strain activates 12-24h in storage medium at 25-33 DEG C;S2, the bacterial strain after activation is trained in seed Support in base, in 25-33 DEG C, 100-150r/min is cultivated 1-2 days, obtains seed liquor;S3, by gained seed liquor with 4-8% (v/v) Inoculative proportion is inoculated in fermentation medium, and at 25-33 DEG C, 100-150r/min shaken cultivations obtain zymotic fluid in 2-4 days.
Wherein, storage medium is Gause I culture medium, and the composition of the Gause I culture medium includes:Solubility is formed sediment Powder, KNO3、NaCl、K2HPO4、FeSO4、MgSO4And water, pH value 7.4-7.6.It is specific preferred, the composition of Gause I culture medium Including:Soluble starch 5-40g, KNO30.1-5g, NaCl 0.1-3g, K2HPO4·3H2O 0.1-3g, FeSO4·7H2O 0.01-1g, MgSO4·7H2O 0.1-3g and water 1-10L.
Wherein, to examine protein peptone culture medium, the composition for examining protein peptone culture medium includes seed culture medium:Sugarcane Sugar, peptone, FeSO4、MgSO4、KCl、K2HPO4And water;It is preferred that examining the composition of protein peptone culture medium includes:Sucrose 5- 50g, peptone 1-15g, FeSO4·7H2O 0.01-1g, MgSO4·7H2O 0.1-5g, KCl 0.1-5g, K2HPO40.1-5g And water 1-10L.
Wherein, fermentation medium is maize powder medium, and the composition of the maize powder medium includes:Corn flour, sucrose, Peptone, starch, yeast extract, NaCl, K2HPO4、MgSO4、CaCO3And water;It is preferred that the composition of maize powder medium includes:It is beautiful Ground rice 5-50g, sucrose 1-20g, peptone 1-10g, starch 1-20g, yeast extract 1-10g, NaCl 1-20g, K2HPO40.1-5g, MgSO40.1-5g, CaCO30.1-5g and water 1-10L.
Invention also provides a kind of Sang Puxun Streptomyces cultures, it is made by above-mentioned cultural method.
Invention also provides the application of above-mentioned Sang Puxun streptomycete bacterial strains and/or its culture, the Sang Puxun strepto-s Bacteria strain and/or its culture are used for controlling plant diseases.
Wherein, plant disease includes the corruption of white muskmelon melon, capsicum is withered, tomato early epidemic, cucumber anthracnose, cotton yellow wither, cucumber Grey mold, rice bakanae disease, tomato green grass or young crops are withered, rice banded sclerotial blight, the black shin of tobacco, Root Rot of Wheat, rice rice blast, gibberella saubinetii, rape sclerotium, One or more in soybean root rot, tomato gray mould, cucumber foxiness or cucumber downy mildew, can prevent a variety of pest and disease damages, and antimicrobial spectrum is wide, Application prospect is wide.
Invention also provides a kind of agricultural chemicals, the agricultural chemicals includes above-mentioned Sang Puxun streptomycete bacterial strains and/or its culture, For microbial pesticide, it can obtain or carry out formulation for zymotic fluid obtained above directly dilution and obtain.
The present invention is further described below in conjunction with specific embodiment.
Embodiment 1
Sang Puxun streptomycetes (Streptomyces sampsonii) SY-FX-31 separation and identification
Sang Puxun streptomycetes 1. (Streptomyces sampsonii) SY-FX-31 separation
Soil 10g is gathered from river bed, is added in the triangular flask of built-in 100mL sterilized waters and bead, in 120r/min's 30min is vibrated on shaking table, vibration stands 1h after terminating, and takes supernatant 0.5mL to add in 4.5mL sterilized waters, vortex mixed is dilute successively Release 10-2、10-3、10-4Times, take 150 μ L dilutions to be coated on Gause I culture medium flat plate respectively, each concentration is coated with 3 Parallel, the single bacterium colony on 28 DEG C of culture 2-7d, picking culture medium carries out plate streaking purifying, obtains Sang Puxun streptomycete bacterium Strain.
Sang Puxun streptomycetes 2. (Streptomyces sampsonii) SY-FX-31 identification
16S rRNA gene order sequencing results show that the 16S rRNA gene orders of SY-FX-31 bacterial strains are sequence table SEQ ID No.1 nucleotide sequences.Homology ratio is carried out according to sequencing result and Genbank Streptomyces 16S rRNA gene orders Compared with, the results showed that Sang Puxun streptomycete (Streptomyces of the SY-FX-31 Pseudomonas in streptomyces (Streptomyces) sampsonii)。
Embodiment 2
Sang Puxun streptomycetes (Streptomyces sampsonii) SY-FX-31 is tested disease fungus isolated activity
By Sang Puxun streptomycetes (Streptomyces sampsonii) SY-FX-31 in storage medium (soluble starch 20g, KNO31g, NaCl 0.5g, K2HPO4·3H2O 0.5g, FeSO4·7H2O 0.01g, MgSO4·7H2O 0.5g, water 1L, PH7.4-7.6 in), at 25 DEG C activate 20h after, by the bacterial strain after activation in seed culture medium (sucrose 30g, peptone 5g, FeSO4·7H2O 0.01g, MgSO4·7H2O 0.5g, KCl 0.5g, K2HPO41g, water 1L) in, in 25 DEG C, 150r/min is trained Support 2 days, obtain seed liquor;Then gained seed liquor is inoculated in fermentation medium (corn flour with 5% (v/v) inoculative proportion 20g, sucrose 10g, peptone 2g, starch 5g, yeast extract 2g, NaCl 2g, K2HPO40.5g, MgSO40.5g, CaCO31g, water In 1L), at 25 DEG C, 150r/min shaken cultivations obtain zymotic fluid in 2 days.
Zymotic fluid is configured to certain density mother liquor, using containing toxic medium method, PDA culture medium (200 grams of potato, 20 grams of glucose, 20 grams of agar, water 1L) in add the mother liquor for preparing in advance, pastille culture medium is made, in sterile bar after cooling Inoculation is used as control for examination pathogen by the use of the PDA culture medium for adding sterilized water under part.For trying sick fungi training is activated in PDA plate Support and form bacterium colony, bacteria cake is produced with card punch (5mm), mycelia is connect to bacterium down in PDA plate center.The flat board that will be inoculated with It is placed in 28 DEG C of biochemical cultivation cases after cultivating 4-7 days and investigates, colony growth diameter is measured using crossing method, and calculate antibacterial Rate.
Sang Puxun streptomycetes (Streptomyces sampsonii) SY-FX-31 is to the inhibitory action for trying disease fungus As a result it is as shown in table 1.
Table 1
SY-FX-31 pairs of Sang Puxun streptomycetes (Streptomyces sampsonii) of the invention as can be seen from the above table The inhibitory action of disease fungus is good.
Embodiment 3
Sang Puxun streptomycetes (Streptomyces sampsonii) SY-FX-31 living body biological determination of activity
The potted plant cucumber seedling (heart stage of 1 leaf 1) of growth selection neat and consistent, zymotic fluid obtained above is configured to necessarily Concentration carries out spraying treatment, clear water control, potted plant seedling naturally dry after chemicals treatment on crops sprayer.24h is followed by Kind bacterium of downy mildew of cucumber spore suspension is placed in phjytotron 24h (temperature:23 DEG C, humidity:90%) moved to after in greenhouse just Often management.Greenhouse experiment:22-30 DEG C of temperature, humidity 40-60%.
The pot rice seedling (3 leaf phase) of growth selection neat and consistent, zymotic fluid obtained above is configured to certain dense Degree carries out spraying treatment, clear water control, potted plant seedling naturally dry after chemicals treatment on crops sprayer.Planted after 24h The strain withered mycelia block of bottom Inoculated Rice line, is placed in 5-7 days (temperature of phjytotron:28 DEG C, humidity:80%), the observation period falls ill Situation.
7d investigation prevention effects are cultivated in greenhouse, grade scale performs National Standard of the People's Republic of China《Agricultural chemicals field Between test of pesticide effectiveness criterion (one)》, prevention effect is calculated with disease index.As a result it is as shown in table 2.
Drug effect computational methods
Table 2
Preventing and treating result, which is tested, from live body can be seen that Sang Puxun streptomycetes (Streptomyces of the invention Sampsonii) SY-FX-31 zymotic fluid has certain prevention effect to rice banded sclerotial blight, cucumber downy mildew.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (6)

1. a kind of Sang Puxun streptomycete bacterial strains, the entitled Sang Puxun streptomycetes of preservation (Streptomyces sampsonii)SY- FX-31, is preserved in China typical culture collection center, and deposit number is:CCTCC M 2014516, the bacterial strain 16S rRNA Gene order is as shown in sequence table SEQ ID No.1.
2. a kind of cultural method of Sang Puxun streptomycete bacterial strains as claimed in claim 1, it is characterised in that including step:
S1, by the Sang Puxun streptomycete bacterial strains described in claim 1 in storage medium, 12-24h is activated at 25-33 DEG C;
S2, by the bacterial strain after activation in seed culture medium, in 25-33 DEG C, 100-150r/min is cultivated 1-2 days, obtains seed Liquid;
S3, gained seed liquor is inoculated in fermentation medium with volumn concentration 4-8% inoculative proportions, at 25-33 DEG C, 100-150r/min shaken cultivations obtain zymotic fluid in 2-4 days;
The storage medium is Gause I culture medium, and the composition of the Gause I culture medium includes:Soluble starch, KNO3、NaCl、K2HPO4、FeSO4、MgSO4And water, pH value 7.4-7.6;
To examine protein peptone culture medium, the composition for examining protein peptone culture medium includes the seed culture medium:Sucrose, albumen Peptone, FeSO4、MgSO4、KCl、K2HPO4And water;
The fermentation medium is maize powder medium, and the composition of the maize powder medium includes:Corn flour, sucrose, albumen Peptone, starch, yeast extract, NaCl, K2HPO4、MgSO4、CaCO3And water.
3. cultural method according to claim 2, it is characterised in that
The composition of the Gause I culture medium includes:Soluble starch 5-40g, KNO30.1-5g, NaCl 0.1-3g, K2HPO4·3H2O 0.1-3g, FeSO4·7H2O 0.01-1g, MgSO4·7H2O 0.1-3g and water 1-10L;
The composition for examining protein peptone culture medium includes:Sucrose 5-50g, peptone 1-15g, FeSO4·7H2O 0.01-1g, MgSO4·7H2O 0.1-5g, KCl 0.1-5g, K2HPO40.1-5g and water 1-10L;
The composition of the maize powder medium includes:Corn flour 5-50g, sucrose 1-20g, peptone 1-10g, starch 1-20g, ferment Female cream 1-10g, NaCl 1-20g, K2HPO40.1-5g, MgSO40.1-5g, CaCO30.1-5g and water 1-10L.
4. a kind of Sang Puxun Streptomyces cultures, are made as the cultural method described in Claims 2 or 3.
5. the Sang Puxun Streptomyces cultures described in Sang Puxun streptomycete bacterial strains and/or claim 4 described in claim 1 exist Application in controlling plant diseases;The plant disease include tomato early epidemic, cotton yellow wither, cucumber grey mold, rice bakanae disease, rice Line is withered, the one or more in gibberella saubinetii, tomato gray mould or cucumber downy mildew.
6. a kind of agricultural chemicals, it is characterised in that the agricultural chemicals includes the Sang Puxun streptomycete bacterial strains and/or power described in claim 1 Profit requires the Sang Puxun Streptomyces cultures described in 4.
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