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International Journal of Medicinal Mushrooms
Impact-faktor: 1.423 5-jähriger Impact-Faktor: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

ISSN Druckformat: 1521-9437
ISSN Online: 1940-4344

Volumes:
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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v19.i1.70
pages 65-73

Effects of Exogenous Salicylic Acid on Ganoderic Acid Biosynthesis and the Expression of Key Genes in the Ganoderic Acid Biosynthesis Pathway in the Lingzhi or Reishi Medicinal Mushroom, Ganoderma lucidum (Agaricomycetes)

Peng-Fei Cao
College of Life Sciences, Nanjing Agricultural University, Nanjing, People's Republic of China; Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing, Jiangsu, People's Republic of China
Chen-Gao Wu
College of Life Sciences, Nanjing Agricultural University, Nanjing, People's Republic of China; Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing, Jiangsu, People's Republic of China
Zhi-Hao Dang
College of Life Sciences, Nanjing Agricultural University, Nanjing, People's Republic of China; Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing, Jiangsu, People's Republic of China
Liang Shi
College of Life Sciences, Nanjing Agricultural University; Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, Nanjing 210095, Jiangsu, People's Republic of China
Ai-Liang Jiang
Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Jiangsu, Nanjing, People's Republic of China
Ang Ren
Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing, Jiangsu, People's Republic of China
Mingwen Zhao
Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Jiangsu, Nanjing, People's Republic of China

ABSTRAKT

We demonstrate herein that salicylic acid (SA) can enhance ganoderic acid (GA) accumulation in the lingzhi or reishi medicinal mushroom Ganoderma lucidum. Following treatment with different concentrations of SA, the GA content was increased 22.72% to 43.04% compared with the control group. When the fungi were treated with 200 μmol/L SA at different times, the GA content was improved 10.21% to 35.24% compared with the control group. By choosing the optimum point based on response surface methodology, the GA content could be increased up to 229.03 μg/100 mg, which was improved 66.38% compared with the control group. When the fungi were treated with 200 μmol/L SA, the transcription levels of key genes in the GA biosynthesis pathway−squalene (SQ) synthase (sqs), lanosterol (Lano; osc), and hydroxy-3-methylglutaryl-coenzyme A reductase (hmgr)−were improved 119.6-, 3.2-, and 4.2-fold, respectively. In addition, following treatment with 100 μmol/L SA, the levels of Lano and SQ, which are intermediate metabolites of GA biosynthesis, were increased 2.8- and 1.4-fold, respectively. These results indicate that SA can regulate the expression of genes related to GA biosynthesis and increases the metabolic levels of Lano and SQ, thereby resulting in the accumulation of GA.


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