• 아시안잔디학회지
• /
• 제23권2호
• /
• pp.361-368
• /
• 2009

Cenangium ferruginosum 은 소나무류의 피목가지마름병의 원인균으로 알려져 있다. 한국에서 이 병은 1989년 처음 보고가 된 이래 2007년 봄 서울, 경기, 강원과 충북지역에서 대발생하였다. 병원균인 C. ferruginosum은 병원성이 약한 내생균으로 알려져 있으나 나무가 상처나 가뭄, 극심한 추위나 온난한 겨울 기후 등으로 인한 스트레스를 받게 되면 병 발생을 유발하게 된다. 본 연구에서는 기후변화에 따른 병 발생 동향을 이해하고자 국 내외 피목가지마름병 발생 현황 및 병원균의 특성을 설명하였다. 또한 경기, 충청, 경상지역의 발병한 잣나무 및 소나무의 병든 가지를 수집하여 병원균의 발달 과정을 관찰하였으며, 병원균을 분리하여 이들의 형태학적인 특성과 분자수준에서의 특성을 분석한 결과 C. ferruginosum 임을 확인할 수 있었다.

• The Plant Pathology Journal
• /
• 제17권4호
• /
• pp.216-221
• /
• 2001

Dieback of pine branches or twigs with brown needles occurs most commonly on Pinus species after severe winter in Korea. In this study, Cenangium ferruginosum was isolated from infected stems, branches, and twigs of Pinus koraiensis (C1), P. densiflora (C2), and P. thunbergii (C3). Morphological and cultural characteristics of the isolates were than compared. There were no significant differences in the morphological characteristics of conidia and ascospores produced by the three isolates. However, cultural differences were observed among the isolates. Optimum temperatures for mycelial growth of C1, C2, and C3 were 15, 20, and $20^{\circ}$, respectively. C1 produced a few conidia and no ascospores, while C2 and C3 produced abundant ascospores and conidia. While optimum temperatures for mycelial growth ranged from 15 to $20^{\circ}$, mycelial growth was also relatively good at lower temperatures of 5-$10^{\circ}$. Conidiomata and conidia were produced on MSA (malt extract soya peptone agar) after 25-30 days of incubation in the dark at $15^{\circ}$. Apothecia were produced by altering culture condition from 15 to $20^{\circ}$, and incubating for 35-60 more days. Optimum temperature for ascospore and conidium germination was $20^{\circ}$. RAPD analysis revealed that there was high similarity of 0.78 between C2 and C3, and low similarity of 0.31 between C2 or C3 and C1.