• 아시안잔디학회지
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• 제9권3호
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• pp.235-252
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• 1995

Turfgrass Rhizoctonia blight is a severe disease in golf courses in Korea. Attempts were made in 1989 to 1994 to identify the Rhizoctonia species associated with turfgrass blights and also to examine their epidemiology. A total of 120 Rhizoctonia isolates collected were identified as R. solani AG1, R. solani AG2-2, R. cerealis(AG-D) and R. oryzas from brown patch, large patch, yellow patch and white patch, re-spectively. R. solani AG1 was mostly associated with brown patch of cool-season grasses. and most frequently isolated in June through July and also in September. R. solani AG2-2 was isolated exclusively from zoysiagrasses from April to November, most frequently in June through July and October through November. R. cerealis was isolated frequently from both creeping hentgrass in March through April and in November, and zoysiagrass in April and July. Thermophilic R. oryzae was isolated only from creeping bentgrass in August, although with very low frequency. R. solani AG2-2 was strongly pathogenic specifically to Korean lawngrasses(Zoysia japonica, Z.matrella, Z. tenuifolia), but non-pathogenic to creeping bentgrass(Agrostis palustris), bermudagrass (Cynodon dactylon), Kentucky bluegrass(Poa pratensis), perennial ryegrass(Lolium prenne), and creeping red fescue(Festuca rubra subsp. ruhra L.). R. cerealis was strongly pathogenic to zoysiagrass and bentgrass only, but was isolate-specific i.e., from non-pathogenic to pathogenic, for other turfgrasses. The mycelial growth was optimum at relatively high temperature ranges of 25~30$^{\circ}C$ for R.solani AG1, AG2-2 and R. oryzae, while the mycelial growth of R. cerealis was initiated at $^{\circ}C$ and almost ceased at or above $^{\circ}C$.

• 미생물학회지
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• 제31권4호
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• pp.300-305
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• 1993

Neurospora crassa 를 카드뮴, 철, 망간, 난 등이 각각 첨가된 배지에서 배양할 경우 각 중금속들이 균사에 저장되는 것을 관찰하였다. 각 중금속들은 단백질에 결합되더 각기 다른 세포네 소기관에 축적되었고, 중금속이 첩가된 배지에서 생장한 균사는 서로 매우 상이한 단백질 분포 양상을 보여 주었다. 가드뮴을 제외한 중금속들은 예상과는 달리 N. crassa 의 성장을 억제하지 않았으며, 납의 경우는 우히려 성장을 촉진하였다. 카드뮴이 첨가된 배지에서 condiospore 는 정상적인 길이 성장을 하지 못하고 둥근 형태로 생장하였으며, 길이 생장을 하던 균사는 두께가 두꺼워짐이 관찰되었다.