A molecular detection method for rapid identification of flat head anthracnose and its application
A flat-head anthrax and molecular detection technology, applied in the field of molecular biology, can solve the problems of large workload, long test period, affecting the speed of pathogen diagnosis, etc., and achieve the effect of effective prevention and control.
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Embodiment 1
[0019] Embodiment 1, the sensitivity determination of anthracnose bacteria to tebuconazole and myclobutanil
[0020] The anthrax strains all come from many regions of the country, and the strain types are: C.truncatum, C.gloeosporioides, C.fructicola, C.scoveillie, and C.fioriniae, each with 50 strains.
[0021] Potato dextrose agar (PDA) medium: 200 g of potatoes, 13 g of agar powder, 18 g of glucose, distilled water to 1 L, sterilized at 121° C. for 20 minutes.
[0022] 1. The experimental steps are as follows:
[0023] 1) tebuconazole and myclobutanil are made into 10 with methanol 5 μg / ml stock solution. For the determination of the sensitivity of capsicum anthracnose bacteria to tebuconazole, tebuconazole was serially diluted to 100 μg / mL, 500 μg / mL, 1000 μg / mL, 2.5×10 3 μg / mL, 5×10 3 μg / mL, 10×10 3 μg / mL, 20×10 3 Concentration gradient of μg / mL; For the sensitivity determination of capsicum anthracnose bacteria to myclobutanil, the test agent myclobutanil was dilut...
Embodiment 2
[0031] Example 2, molecular identification of anthracnose pathogen C.truncatum
[0032] 1. Strains: Three strains are selected for each anthrax, C. truncatum strains are HBLF11, CQ6, SDWC2-17; C. gloeosporioides are SDLY2-1, GDQY13-85, SC8; C. fructicola are GXGL7, GDQY13-96, YNML2 , C.scoveillie for SXCZ3, SXSZ, FJ33, C.fioriniae for SHFX, JL23, QH8
[0033] 2. Method:
[0034] 1) Strain cultivation: use PDA medium (200 g of peeled potatoes, 18 g of glucose, 13 g of agar powder, and distilled water to make up to 1 L. 121 ° C, 20 min, after damp heat sterilization) to cultivate the capsicum anthracnose bacteria at 28 ° C. The pre-cultured anthracnose bacteria were inoculated on PDA medium covered with cellophane, cultured in the dark at 28°C for 5 days, and the hyphae were collected, frozen in liquid nitrogen and stored at -80°C for extraction of genomic DNA.
[0035] 2) extract the genome DNA of different kinds of capsicum anthracnose bacteria respectively:
[0036] Take a...
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