Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (5): 1088-1096.DOI: 10.3969/j.issn.1004-1524.2023.05.12

• Horticultural Science • Previous Articles     Next Articles

Isolation, identification and biological characteristics of a wild Flammulina filiformis strain

FENG Lianrong1(), ZHANG Yan1, ZHAO Xinwen1, SONG Lizhi1, LIANG Dejun2,*()   

  1. 1. Liaoning Provincial Institute of Poplar, Gaizhou 115213, Liaoning, China
    2. Liaoning Institute of Economic Forestry, Dalian 116030, Liaoning, China
  • Received:2022-06-17 Online:2023-05-25 Published:2023-06-01

Abstract:

The isolation, identification and biological characteristics of a wild edible fungus were studied to provide candidate strain resources for the development and utilization of wild edible fungi. The wild macrofungi JC423 collected from poplar stumps was taken as the research object, and its taxonomic status was clarified through morphological identification, fruiting test, ITS sequences analysis and phylogenetic analysis. The effects of different carbon sources, nitrogen sources, inorganic salts, vitamins, pH and temperature on the growth of JC423 hyphae were studied by single factor experiment. The results showed that the collected wild edible fungi were preliminarily identified as Flammulina velutiper according to the shape of the fruiting bodies. The 773 bp target fragment was obtained by ITS sequence analysis. BLAST sequence alignment showed that the highest similarity between this strain and F. filiformis strain F007 was 99.34%. Partially similar sequences were downloaded and an evolutionary tree was constructed by MEGA 7.0. JC423 and F. filiformis strain F007 with the serial number MN337400.1 were clustered together. Combined with morphological characteristics, JC423 was identified as F. filiformis. The results of biological characteristics showed that the suitable carbon source for the growth of JC423 mycelium was fructose, the suitable nitrogen source was peptone, the suitable pH range was 9-10, and the suitable growth temperature was 25 ℃. Inorganic salts and vitamins had little effect on mycelial growth. The study clarified the nutritional requirements and conditions for the growth of wild F. filiformis, and laid a foundation for the development and utilization of F. filiformis.

Key words: Flammulina filiformis, strain isolation, ITS sequence, biological characteristic

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