Biological Characterization of Marssonina coronaria Associated with Apple Blotch Disease.
Marssonina coronaria associated with apple blotch disease causes severe premature defoliation, and is widely distributed in Korea. Thirteen isolates were collected from orchards located in Gyeongbuk Province from 2005~2007. All isolates displayed over 99.6% and 99.2% sequence similarity to each other in internal transcribed spacer regions and partial sequences of 28S rDNA, respectively. The isolates were phylogenetically closely related to Chinese isolates. Selected isolates did not differ in their pathogenicity. The optimum conditions for fungal growth were 20℃ and pH 6 on peptone potato dextrose agar (PPDA). Peptone and mannose were the best nitrogen and carbon source, respectively. Fungal growth was better on PPDA than on common potato dextrose agar. This study provides valuable information for integrated disease management program and facilitates the routine culturing of M. coronaria.
Apple Experiment Station, National Horticultural Research Institute, Gunwi 716-812, Korea.
Dong-Hyuk
DH
Lee
Chang-Gi
CG
Back
Nang Kyu Kyu
NK
Win
Kyung-Hee
KH
Choi
Kyung-Min
KM
Kim
In-Kyu
IK
Kang
Cheol
C
Choi
Tae-Myung
TM
Yoon
Jae Youl
JY
Uhm
Hee-Young
HY
Jung