• Mycobiology
• /
• 제35권3호
• /
• pp.117-123
• /
• 2007

Seventy-two lichen specimens of Cetrelia collected in South Korea since 2003 were examined by both phenotypic and phylogenetic analyses. The phenotypic analysis was based on morphological and chemical characters, and the phylogenetic analysis was based on nrDNA ITS sequences. The result suggested that the presence and absence of isidia, soredia, lobules and medullar reaction C+ or C- are the important characters in the taxonomy of this genus. Four species of Cetrelia, C. chicitae, C. braunsiana, C. japonica, and C. pseudolivetorum have been identified in this study. Description of each species is presented with morphological and chemical characters. A key to the Cetrelia species is also presented.

• The Plant Pathology Journal
• /
• 제24권2호
• /
• pp.202-206
• /
• 2008

Antifungal activity of Korean and Chinese lichen-forming fungi (LFF) was evaluated against plant pathogenic fungus of Colletotrichum acutatum, causal agent of anthracnose on hot pepper. This is the first attempt to evaluate antifungal activity of LFF, instead of lichen thalli, against C. acutatum. Total 100 LFF were isolated from the lichens with discharged spore method or tissue culture method. Among the 100 isolates, 8 LFF showed more than 50% of inhibition rates of mycelial growth of the target pathogen. Especially, Lecanora argentata was highly effective in inhibition of mycelial growth of C. accutatum at the rate of 68%. Antifungal activity of other LFF was in the order of Cetrelia japonica (61.4%), Ramalina conduplicans (59.5%), Umbilicaria esculenta (59.5%), Ramalina litoralis (56.7%), Cetrelia braunsiana (56.5%), Nephromopsis pallescensn (56.1%), and Parmelia simplicior (53.8%). Among the tested LFF, 61 isolates of LFF exhibited moderate antifungal activity against the target pathogen at the inhibition rates from 30 to 50%. Antifungal activity of the LFF against C. acutatum was variable at the species level rather than genus level of LFF. This study suggests that LFF can be served as a promising bioresource to develop novel biofungicides.

• 한국산림과학회지
• /
• 제89권1호
• /
• pp.65-76
• /
• 2000

대기오염 지표생물로 이용 가능한 국내 분포 지의류(地衣類)를 선발하기 위하여 전남 광양 백운산 지역에 분포하는 엽상체(foliose) 및 수지상(fructicose) 지의류(地衣類)의 종(種)과 피도(被度)를 조사하고, 오존에 대한 생체반응을 조사하였다. 백운산에 서식하고 있는 지의류(地衣類)는 총 9과 20종 34속의 엽상체 및 수지상 지의류(地衣類)로 대기오염에 내성인 종(Lecanora sp.)부터 예민한 종(Ramalina sp.)까지 매우 다양한 지의류(地衣類)가 분포하고 있었다. 이 지역의 주요 엽상체 및 수지상 지의류(地衣類)는 Leptogium sp., Parmelia sp., Parmotrema sp., Phaeophyscia sp., Cladonia sp. 등이었다. 백운산 분포 지의류(地衣類) 중에서 우리나라 전역에 널리 분포하면서 동정이 용이한 엽상체 지의류(地衣類) 3종(種)(P. tinctorum, P. austrosinense, Certrelia braunsiana)과 수지상 지의류(地衣類) 1종(種)(Ramaliana yasudae)을 0.2ppm에서 1일(日) 8시간씩 2주간 오존에 노출시킨 결과 오존에 노출된 지의류(地衣類)는 MDA와 HPCD가 증가하고 엽록소가 감소되었으나, 수용성 단백질의 함량은 변화를 보이지 않았다. MDA, HPCD, 엽록소 파괴 정도를 기준으로 하였을 때, 오존에 대한 민감 정도는 P. austrosinense > P. ticctorum > C. braunsiana > R. yasudae 순으로 나타났다.