Mycobiology.  2010 Sep;38(3):171-175. 10.4489/MYCO.2010.38.3.171.

Characteristics of Metacordyceps yongmunensis, a New Species from Korea

• Sung GH
• Shrestha B
• Sung JM

• KMID: 1457451
• DOI: http://doi.org/10.4489/MYCO.2010.38.3.171

Abstract

Metacordyceps yongmunensis is a newly reported species from Korea, which is very similar to Cordyceps species in morphological characters. It grows on large lepidopteran pupa, and numerous white stromata grow on a single host. Mycelial growth characteristics of M. yongmunensis isolates were studied in different media and at different temperatures. Also, different carbon sources, nitrogen sources, and mineral salts were tested for mycelial growth of M. yongmunensis. Schizophyllum (mushroom) genetics complete medium plus yeast extract, Schizophyllum (mushroom) genetics minimal medium, and Martin's peptone dextrose agar produced longer colony diameters and more compact mycelial density than other media. The optimum temperature for mycelial growth was 25degrees C. Carbon sources such as sucrose, soluble starch, dextrose, glucose, dextrin, maltose, and fructose showed better mycelial growth, whereas peptone, yeast extract and tryptone resulted in the best mycelial growth of all of the nitrogen sources tested. All of the mineral salts tested showed similar growth as the control, except K2HPO4 which showed longer colony diameter and more compact mycelial density. The compact colonies were white and cottony with a greenish margin. The results showed that M. yongmunensis is an easy fungus to growas it grew from 30 to more than 50 mm in 2 wk.

Keyword

Carbon source; Metacordyceps yongmunensis; Nitrogen source; Optimum medium; Optimum temperature

MeSH Terms

Agar
Carbon
Cordyceps
European Continental Ancestry Group
Fructose
Fungi
Glucose
Humans
Korea
Maltose
Nitrogen
Peptones
Phosphates
Potassium Compounds
Pupa
Salts
Schizophyllum
Starch
Sucrose
Yeasts
Agar
Carbon
Fructose
Glucose
Maltose
Nitrogen
Peptones
Phosphates
Potassium Compounds
Salts
Starch
Sucrose