Efficiently phosphorus-dissolving Aspergillus tubingensis strain and application thereof
A technology of Aspergillus tabbingen and phosphorus dissolving, which is applied in the field of microorganisms to achieve the effect of strong phosphorus solubility and good compatibility
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Embodiment 1
[0057] Embodiment 1, the isolation and identification of Aspergillus tubingensis (Aspergillus tubingensis) bacterial strain P2-2
[0058] 1. Isolation of Aspergillus tubingensis strain P2-2
[0059] 1. Preliminary screening of microorganisms in soil
[0060] Soil (soil from soybean fields in Changping, Beijing (E116°07.909′; N 40°11.303′)) was prepared to obtain 10 -2 -10 -4 suspension, and then spread the soil suspension on Ca 3 (PO 4 ) 2 On the insoluble inorganic phosphorus solid medium containing streptomycin (100 μg / ml) and chloramphenicol (100 μg / ml) as the phosphorus source, cultivate at 25 ° C, observe, isolate and purify the bacterial strain that produces the phosphorus-dissolving circle, and put The isolated and purified strain was named P2-2, and the strain was preserved at -80°C with 15% glycerol for future use.
[0061] 2. Identification of strain P2-2
[0062] 1. Morphological observation of strain P2-2
[0063] After the strain P2-2 was cultured on CYA m...
Embodiment 2
[0068] Embodiment 2, bacterial strain P2-2 to Ca 3 (PO 4 ) 2 , Zn 3 (PO 4 ) 2 , Hydroxyapatite as the phosphorus source of the dissolution of inorganic phosphorus medium
[0069] 1. The effect of strain P2-2 on Ca 3 (PO 4 ) 2 , Zn 3 (PO 4 ) 2 , Solubilization of solid inorganic phosphorus medium with hydroxyapatite as phosphorus source
[0070] The bacterial strain P2-2 is made into a bacterial suspension (the bacterial suspension is a solution obtained by dissolving the spores of the bacterial strain P2-2 in water), so that the number of spores in the bacterial suspension reaches 1×10 6 cfu / ml. Take 200 μl of bacterial suspension in a 6cm petri dish, and pour 5 glass beads into each petri dish to evenly coat the plate. After culturing at 25°C for 2 days, use a 6mm hole puncher to make fungus cakes, and insert the fungus cakes with Ca 3 (PO 4 ) 2 , Zn 3 (PO 4 ) 2 , hydroxyapatite as the phosphorus source on a solid inorganic phosphorus plate, cultured at 25°...
Embodiment 3
[0083] Embodiment 3, the affinity test of bacterial strain P2-2 and functional bacterial strain
[0084] Paecilomyces lilacinus YES-2 (YES-2), Streptomyces rubrum HDZ-9-47 (HDZ-9-47) and Paleomyces pallidum NC1 (NC1) are all functional complex microorganisms for controlling cucumber root-knot nematode .
[0085] 1. Mix and sterilize PDA, Gaoshi No. 1 and LA medium according to the same mass ratio and pour them into a 9cm petri dish to obtain a mixed medium. After the mixed medium is solidified, mix Streptomyces rubrum HDZ-9-47 (HDZ-9-47) and Pallidum NC1 (NC1) cells were inoculated into the mixed medium in the form of "well" streaks, and cultured at 30°C for 2 days; then the strains P2-2 and Take a 0.6cm cake from the edge of the Paecilomyces lilacinus YES-2 (YES-2) colony, and insert them into Streptomyces rubrum HDZ-9-47 (HDZ-9-47) and Pallidum NC1 (NC1) respectively. At the position of 0.5cm of the bacteria, observe the biocompatibility among the strains after inverting a...
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