TENG Xi-ying,HAN Peng-jie,ZHANG Xue-yan,et al.Optimization of Agrobacterium-Mediated Genetic Transformation System of Armillaria gallica[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(06):124-130.
TENG Xi-ying,HAN Peng-jie,ZHANG Xue-yan,et al.Optimization of Agrobacterium-Mediated Genetic Transformation System of Armillaria gallica[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(06):124-130. DOI: 10.13422/j.cnki.syfjx.20220314.
Optimization of Agrobacterium-Mediated Genetic Transformation System of Armillaria gallica
To optimize the existing genetic transformation system of
Armillaria gallica
to improve the transformation efficiency and lay a foundation for the follow-up research on
Armillaria
molecular marker-assisted breeding and gene function.
Method
2
The genetically transformed plasmid pH101-PAgGPD-GFP-TrpC was constructed,transformed into
Escherichia coli
,amplified, and cultured,and the plasmid was extracted. The extracted plasmid was transformed into four different agrobacteria LBA4404,EHA105,GV3101,and AGL-1,respectively. The transformed agrobacteria were used for impregnating
A. gallica
,and the agrobacteria with the highest conversion rate were screened out. Then the agrobacterium-mediated genetic transformation system of
A. gallica
was optimized from the type and concentration of antibiotics,co-culture time,concentration of bacterial solution, and impregnation method. The phenotype profiles of
A. gallica
under different conditions were observed using Synbiosis ProtoCol 3.
Result
2
The optimized genetic transformation conditions of
A. gallica
were as follows: the
Agrobacterium
strain of EHA105 at absorbance
A
600 nm
=0.6, the co-culture time of 2 d, the infection mode of negative pressure impregnation for 10 min, the primary screening medium of PDA medium containing 400 mg·L
-1
cefotaxime sodium and 10 mg·L
-1
hygromycin,and the secondary screening medium of PDA medium containing 12 mg·L
-1
hygromycin.
Conclusion
2
In this study,the existing genetic transformation system of
A. gallica
was optimized,and there was a significant difference in the transformation rate before and after optimization (
P
<
0.05). After optimization,the transformation efficiency of
A. gallica
was about 4.33%,which was about eight times higher than that before optimization.
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