191
한국균학회지 The Korean Journal of Mycology
A New Record of Neosartorya aureola Isolated from Field
Soil in Korea
Mahesh Adhikari
1
, Sangwoo Kim
1
, Dil Raj Yadav
1
, Changmu Kim
2
, Hyang Burm Lee
3
and Youn Su Lee
1
*
1
Division of Biological Resource Sciences, Kangwon National University, Chuncheon 24341, Korea
2
Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22755, Korea
3
Division of Food Technology, Biotechnology & Agrochemistry, College of Agriculture and Life Sciences, Chonnam National University,
Gwangju 61186, Korea
ABSTRACT : A new species of Neosartorya was recovered during investigation of the fungal community in soil samples collected
from different locations in Korea; Neosartorya aureola KNU14-7 was isolated for the first time from field soil in Korea and
identified based on the internal transcribed spacer region of rDNA and morphological characteristics. The species has not been
officially reported from Korea and we report it here with description and figures.
KEYWORDS : Molecular identification, Morphology, Neosartorya aureola
Neosartorya is a widespread genus of the Trichocomo-
ceae family . It is teloemorph of Aspergillus section Fumi-
gati include many species which is important because of
its pathogenic or allergenic to human [1]. Most members
of the genus Neosartorya Malloch & Cain [2] in the Euro-
tiales are of worldwide distribution and are very abun-
dant, occurring nearly everywhere in soil, air, dust, food
etc. [3-7]. A few Neosartorya species are mycotoxigenic
and causal agents of human diseases like aspergillosis,
osteomyelitis, endocarditis and mycotic keratitis. [8-16].
Certain species of the genus are used in the production
of bioactive metabolites [17]. All of the Neosartyora spe-
cies produce heat resistant ascospores that are frequently
encountered in different food products and cause the
spoilage of processed food products [18, 19]. Thus, there
has been considerable recent interest of mycologists in
working with Neosartorya aureola.
During studies on the diversity of fungal communities
in field soil of Gangwon-do, Korea, a species of Neosar-
torya was encountered. Based on its morphological and
molecular characteristics, this species was identified as N.
aureola and named N. aureola KNU14-7. To the best of
our knowledge this fungus has not been officially reported
in Korea.
Collection of soil samples and fungal isolation
Soil samples were collected from different locations in
Samcheok city, Korea in 2014. Soil samples were taken
from (0~15 cm) depth, air dried and stored in plastic
bags at 4
o
C until used. The fungi were isolated by con-
ventional dilution method and supplemented with 100
μg chloramphenicol per mL potato dextrose agar (PDA;
Difco, Detroit, USA) and grown for 7 days at 28
o
C until
the growth of colonies was observed.
ITS, β-tubulin and calmodulin gene sequencing analysis
Genomic DNA of the strain was extracted using DNeasy
Plant Mini Kit (QIAGEN, Germantown, MD, USA) follow-
ing the manufacturer’s instructions. The internal transcri-
bed spacer (ITS) regions, including the 5.8S were ampli-
fied with the primers ITS1 and ITS4 [20]. For the sequen-
cing of partial β-tubulin and calmodulin genes, the seg-
ments of β-tubulin and calmodulin were amplified with
the primers BT2a and BT2b and cmd5 and cmd6 [21,
Research Note
*Corresponding author
E-mail: younslee@kangwon.ac.kr
Received June 5, 2015
Revised June 13, 2015
Accepted September 8, 2015
This is an Open Access article distributed under the terms of the
Creative Commons Attribution Non-Commercial License (http://
creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted
non-commercial use, distribution, and reproduction in any medium,
provided the original work is properly cited.
Kor. J. Mycol. 2015 September, 43(3): 191-195
http://dx.doi.org/10.4489/KJM.2015.43.3.191
pISSN 0253-651X • eISSN 2383-5249
© The Korean Society of Mycology