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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

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

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v19.i2.60
pages 145-154

New Germplasms of the Culinary-Medicinal Button Mushroom, Agaricus bisporus (Agaricomycetes): Two Wild Strains from the Tibetan Plateau (China)

Bin-Bin Li
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China; ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China; University of Chinese Academy of Sciences, Beijing, China
Si-Ping Jiang
ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China
Ai-Guo Xu
ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China
Phurbu-Dorji
ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China
Wen-Jing Wang
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China; ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China
Xiao-Liang Wang
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China; ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China
Tie-Zheng Wei
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China; ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China
Zu-Tang Zhang
Putian Institute of Agricultural Sciences in Fujian Province, Putian, China
Yi-Jian Yao
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; ITPB-IMCAS Key Joint Laboratory of Alpine Fungi, Lhasa, China

ABSTRACT

Agaricus bisporus is one of the most important commercially cultivated culinary-medicinal mushrooms worldwide. In China, most of the cultivated strains of the fungus were introduced from other countries and cultivated in the eastern provinces. In this study, 2 wild strains of A. bisporus, 2091 and 2094, isolated from fresh specimens collected from the Tibetan Plateau, were domesticated and cultivated alongside a commercial hybrid strain, As2796, in Lhasa, China, for comparison in order to provide new germplasms for cultivation. Basic characteristics, mushroom yield, dry weight, polysaccharide contents, and antioxidant activities of the tested strains were analyzed. Compared with strain As2796, the 2 wild strains displayed good values for mycelial growth, time to fruiting, mushroom yield, dry weight, and polysaccharide contents, and their basidiomata had distinct morphological characteristics (e.g., brown or pale brown caps with some white scales). In addition, the antioxidant activities (reducing power and DPPH radical scavenging effect) of strain 2094 were significantly higher than those of the other 2 strains. Domestication of the 2 wild strains would add more genetic variation into the germplasm of A. bisporus for cultivation, especially in China, and might help to address the problem inherent to the nearly monoculture crop lacking genetic diversity in China.


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