• Korean journal of applied entomology
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• v.51 no.3
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• pp.191-205
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• 2012

Because insect visitors was different depending on decomposition stage, dipterans occurred on chicken carcasses depending on postmortem intervals were compared by abandoned sites and decomposition from a serial study on arthropod occurrence from carcasses as forensic indicator. Species occurrence and decomposition of carcasses were different depending on abandoned sites (forest hill, open field, stream, greenhouse and roof), seasons (spring, summer, fall and winter), and situation (burying and non-burying). Development of carcass decomposition was faster at all sites in summer, carcass in greenhouse in winter, and unburied carcasses. Although visiting time of blow flies (Calliphoridae) (Phaenicia sericata, Lucilia illustris, Lucilia sp., Chrysomyia pinguis, and Chrysomyia megacephala) was different depending on abandoned season, their adults were generally collected from carcasses within 2 days. However, there were no visited flies at fresh stage of buried carcasses. The flesh flies (Sarcophagidae) were collected from all sites and seasons, and much faster from unburied carcasses than buried carcasses. Those were collected earlier from carcasses in greenhouse than other sites and occurrence was also shorter. In greenhouse, occurrence time of flesh flies were different depending on season; spring and summer - from fresh to active decay stage, fall - fresh to active decay stage, and winter - advanced decay to remains stage. Calliphora lata, Tricerotopyga calliphoroides, and Aldrichana grahami were dominant species and occurrences were different from other flies. These flies were active mainly from fresh to active stage. Larvae of sarcophagid flies were occurred earlier than those of calliphorid flies on buried carcasses.

• The Korean Journal of Mycology
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• v.42 no.4
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• pp.353-356
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• 2014

In August 2013, brown rot was observed on cherry fruits (Prunus avium L.) in Hwaseong city, Korea. Fruit rot first appears as small, circular brown spots that increase rapidly in size causing the entire fruit to rot. Grayish spores appear in tufts on rotted areas. Based on these morphological characteristics, the two isolates were identified as Monilinia fructicola. Molecular analysis of 5.8S subunit and flanking internal transcribed spacers (ITS1 and ITS2) was performed to confirm the identification. The ITS sequences had 100% identity with those of other reference M. fructicola isolates of NCBI GenBank. Pathogenicity was tested using spore suspension inoculation on wounded or unwounded cherry fruits. The lesions were observed on wounded and unwounded fruits after inoculation for 7 days. This is the first report on M. fructicola causing brown rot on cherry fruits in Korea.

• Research in Plant Disease
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• v.8 no.3
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• pp.175-178
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• 2002

Two novel casual agents of soybean sprout rot occurred at soybean sprouts cultivated under structure in Suwon area in 1997 were isolated and their pathogenicity was tested in vivo. An isolate formed crowed, black acervuli which were oval to elongated with numerous black, needlelike, intermixed long and short setae, 65~110$\times$3.5~6.6 ${\mu}{\textrm}{m}$. Conidia were curved, lunate, unicellular and hyliane and measured 21.5~22.5$\times$3.5~4.0 ${\mu}{\textrm}{m}$. The other isolate produced conidia with straight and cylindrical, and measured 14.0~17.5$\times$3.5~4.5 ${\mu}{\textrm}{m}$. Apressorium size was measured 6.3~8.5$\times$4.5~5.0 ${\mu}{\textrm}{m}$. The agents were identified as Colletotrichum truncatum and C. gloeosporioides based on their morphological characteristics. There was a large difference in pathogenicity between two isolates. C. gloeosporioides caused dark brownish discoloration of whole plants. It showed high pathogenicity with severe disease development. Meanwhile C. gloeosporiodes caused light brown spots on cotyledon and its pathogenicity was not strong. The soybean sprout rot occurred by the two Colletotrichum species was firstly reported in soy-bean sprout in Korea, and we suggest it as “Colletotrichum rot of soybean sprout”.

• Research in Plant Disease
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• v.22 no.2
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• pp.122-126
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• 2016

In June 2015, an exhibited typical signs and symptoms of brown rot was observed on fruit of Apricot cvs. Modern and Alexander at an incidence of 5% of fruit in Jeonju, Korea. Early symptoms on fruit showed small, circular, light brown spots that eventually destroyed the entire fruit. Small sporodochia appeared on the fruit surface. Fruit susceptibility to brown rot increases during the 1 to 2 weeks period prior to harvest. The conidia were one-celled, hyaline, lemon-shaped, $14.6-18.0{\times}8.5-11{\mu}m$, and borne in branched monilioid chains. Based on the morphological characteristics and phylogenetic analysis of internal transcribed spacer (ITS), the fungus was identified as Monilinia fructicola. A BLAST search revealed that sequences of the fungus shared 100% identity to those of M. fructicola. Pathogenicity of a representative isolate was proved by artificial inoculation, fulfilling Koch's postulates. To our knowledge, this is the first confirmed report on the occurrence of M. fructicola on apricot in Korea.