• Mycobiology
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• 제35권2호
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• pp.87-90
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• 2007

A total of 520 overwintered sclerotia were collected from surface of soil under mulberry trees in six locations in Korea during February in 2006 and 2007. The collected sclerotia were tested for their germination in vitro and identified based on their morphological characteristics. Out of all sclerotia tested, 52.3% of the sclerotia germinated and produced two types of apothecia. The two types of fungi occurred from the sclerotia at the ratio of 49.8 vs. 50.2. The fungal type with cup-shaped apothecia was identified as Ciboria shiraiana and another type of fungus with club-shaped apothecia as Scleromitrula shiraiana. Taxonomy and distribution of the two sclerotial fungi were described and discussed.

• 식물병연구
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• 제19권4호
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• pp.308-312
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• 2013

The popcorn disease caused by sclerotia forming fungi reduces the productivity of mulberry fruits in world wide. In Korea, only two species (Ciboria shiraiana and Scleromitrula shiraiana) have been reported as the major causal organisms and their morphological features are also largely unknown. Hereby, we report the first identification of another species (i.e. Ciboria carunculoides) in Korea and detailed features of their anamorphic stage. Fungi dominantly associated with sclerotia were purely isolated from infected mulberry fruits under the microscope. PCR-amplified DNA encoding 5.8S rRNA displayed 100% similarity to Ciboria carunculoides. The anamorphic features exhibited the absence of true mycelia. Instead, very short, aseptated, branched conidiophores were directly emerged from sclerotia. Phialides were usually three in number from each conidiophore, ampuliform to navicular in shape, slightly curved and tapering towards the apex. Conidia were produced from phialides and mostly found as one celled, pear shaped, not hyaline with smooth to uneven surface walled. Diversely modified features in phialides formed pseudo-mycelial structures around the host tissue. Combined all, current study is the first report of C. carunculoides isolated in Korea and the foremost detailed description of its anamorph stage.

• 식물병연구
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• 제13권3호
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• pp.131-136
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• 2007

2005년부터 2007년까지 국내 여러 지역에서 오디균핵병 발생을 조사하였다. 병든 과실은 회백색으로 변색되었고, 지상부로 떨어진 후 월동기간 동안 딱딱하고 검은색 균핵으로 변하였다. 뽕나무포장 내 월동균핵으로부터 형성된 자낭반은 5월 상순에 관찰되었으며, 컵 또는 곤봉모양의 두 가지 형태의 자낭반이 형성되었다. 컵 모양의 자낭반을 가진 균은 Ciboria shiraiana, 곤봉모양의 자낭반을 가진 균은 Scleromitrula shiraiana로 동정되었다. 조사된 포장에서 C. shiraiana와 S. shiraiana는 약 6:4의 비율로 발생하였다. 본 병의 발생은 조사년도, 조사지역 및 품종에 따라 차이가 있었다. 뽕나무포장에서 품종간 병 발생을 조사한 결과, 백하형상, 다호조생, 하수상, 재래종 및 사원뽕 22는 본 병에 대해 저항성이었으며, 청일뽕, 대성뽕, 국상20호 및 터키-D는 다소 감수성이었고, 카테네오, 모레지 및 상과는 매우 감수성이었다. 비닐이나 부직포로 지표면을 피복한 포장에서는 피복하지 않은 포장에 비해 병 발생이 훨씬 낮았다. 볏짚으로 피복된 포장에서의 병 발생은 피복하지 않은 포장과 유사하였다.

• International Journal of Industrial Entomology and Biomaterials
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• 제33권1호
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• pp.36-40
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• 2016

Mulberry fruits also have tremendous potential for providing various valuable industrial products of very high economic value for human beings. Nevertheless, through global warming, the popcorn disease caused by sclerotia forming fungi reduces the productivity of mulberry fruits in worldwide. So, in this study, we investigated damage ratio of mulberry popcorn disease in mulberry fruit production farm (Buan, Jeongueb, Sangju, Gochang in Korea). In Jeonbuk Buan, popcorn disease rate was the highest about 30%, on the other hand, in case of Gyungbuk Sangju and Jeonbuk Gochang, not damage. Also, we investigated about popcorn disease prevention by various of chemical treatment methods.