• 한국식물병리학회지
• /
• 제14권6호
• /
• pp.654-660
• /
• 1998

Colletotrichum gloeosporioides and Glomerella cingulata are the most important pathogens causing anthracnose which may reduce the stand rate and yield on wide kinds of plants including strawberry. Average occurrence rate of anthracnose is 36.9% on major strawberry cropping areas in Korea. We newly found that C. gloeosporioides which does not forming a sexual stage, infects strawberry and differs in some characteristics concerning virulence, cultural and morphological properties to G. cingulata which has a sexual stage. C. gloeosporioides was mainly isolated from the crown with 35.2% rate, while G. cingulata was largely isolated from petiole, runner with 40.9% rate in infected strawberry plants. These two pathogens showed significant differences in cultural characteristics such as perfect stage formation, temperature response as well as benomyl resistance. It was demonstrated that C. gloeosporioides has significantly stronger pathogenicity than G. cingulata in pathogenicity test carried on strawberry plants to various strawberry cultivars. Akihime, Akaneko and Nyoho forcing cultured strawberry cultivars, considered to be susceptible, while semiforcing cultured cultivars, such as Suhong and Holowase, were shown resistant to both pathogens. In non-wound inoculation, C. gloeosporioides was shown pathogenicity on the apple fruit, but G. cingulata could not infect it.

• 한국식물병리학회지
• /
• 제10권2호
• /
• pp.105-111
• /
• 1994

Pathogenic fungal species associated with apple anthracnose were studied with diseased fruits collected over two major apple growing areas from 1986 to 1988. Colletotrichum acutatum Simmonds, c. gloeosporioides(Penz.) Sacc. and Glomerella cingulata(Stonem.) Spauld. & Schrenk were identified based on their mycological characteristics. C. acutatum could be easily differentiated from C. gloeosporioides by producing their fusiform conidia and developing apricot∼salmon colony colors, non-forming an ascigerous stages. Growth rate of C. acutatum were slow in plate culture. The three species of anthracnose fungi tested caused apple rot. Symptoms produced by C. gloeosporioides were larger than those of the others. C. gloeosporioides and G. cingulata produced rot lesions on apples that appeared became brown and later black, but C. acutatum produced rot lesions appeared yellowish brown and later reddish brown. G. cingulata has the major species responsible for apple anthracnose, epidemics in Korea.

• The Plant Pathology Journal
• /
• 제17권4호
• /
• pp.236-241
• /
• 2001

Serve outbreaks of anthracnose were observed on perilla plants grown in greenhouses and open fields in several locations in Korea during the disease survey from 1997 to 2000. A total of 53 isolates of Colletotrichum spp. and Glomerella sp. was obtained from diseased perilla plants and identified based on their morphological and cultural characteristics. Forty isolates were identified as Colletotrichum gloeosporioides, three isolates as C. coccodes, five isolates as C. dematium, and the other five isolates as Glomerella cingulata, the teleomorph of C. gloeosporioides. All isolates of C. gloeosporioides tested by artificial inoculation were strongly virulent on perilla plants, but isolates of the other species were weakly or not virulent. Anthracnose symptoms induced on the perilla plants by artificial inoculation with the isolates of C. gloeosporioides were similar to those observed in the fields. This study revealed that C. gloeosporioides is the main causal fungus of perilla anthracnose.

• 한국균학회지
• /
• 제23권2호통권73호
• /
• pp.114-120
• /
• 1995

병든 고추에서 수집한 종자에서 Colletotrichum dematium, C. gloeosporioides 및 Glomerella cingulata 등이 습지법에 의해서 검출되었다. C. gloeosporioides는 공시된 종자시료에서 우점종이었으며 그 다음이 C. dematium, G. cingulata의 순이었다. 탄저병균의 종자내 감염부위를 조사한 결과, 종피, 배유 및 자엽에서 C. dematium, C. gloeosporioides 및 G. cingulata가 검출되었으며 3종의 탄저병균의 검출율은 종피에서 더 많았고 배유와 자엽에서는 적었다. C. dematium, C. gloeosporioides와 G. cingulata의 종자감염은 종자부패, 모잘록 및 모마름병을 일으켰다. 접종시험결과 C. gloeosporioides가 가장 병원성이 강하였다. C. dematium은 상처가 있을 때 약한 병원성을 나타냈으며 G. cingulata는 유상 또는 성숙과에 대해서 약한 병원성이 있었다. 탄저병에 대한 종자소독 결과 베노람 수화제와 지오람 수화제의 효과가 우수하였다.

• 식물병연구
• /
• 제10권3호
• /
• pp.198-202
• /
• 2004

2001년∼2002년에 탄저병을 심하게 발병시킨 딸기 재배포장의 식물체 조직에서 탄저병균 Colletotrichum gloeosporioides와 Glomerella cingulata의 월동과 토양에서의 생존유무를 조사하였다 식물체의 엽병, 런너, 관부에서 월동 생존율은 각각 68.7％, 14.3％, 36.7％였다. 그러나 포장조건하에서 분생포자는 토양의 표면, 3, 5, 10cm 깊이에서 전혀 검출되지 않았다. C. gloeosporioides와 G. cingulata의 토양과 이병잔재물에서의 생존력을 비교 조사하기 위해 온도와 수분조건을 달리하여 처리한 다음 경시적으로 분리비율을 조사하였다. 분생포자는 모든 처리에서 10일 이내에 개체군이 40％까지 급격히 감소하였으며 시간이 지날수록 더욱 많이 사멸되었다. 토양 속에서 G. cingulata 분생포자의 생존율은 C. gloeosporioides와 비슷하였다. 분생포자의 생존율은 온도가 낮고 건조한 토양일수록 높았고 토양 온도와 습도가 증가할수록 감소하였다. 토양에 묻어둔 감염된 엽병분석에서도 유사한 경향을 나타내었다.

• 식물병연구
• /
• 제8권4호
• /
• pp.224-227
• /
• 2002

실내 장식용 드라세나 산데리아의 줄기에 발생한 괴사 병징으로부터 탄저병원균을 확인하였다. 분생자층 위에 분생포자, 강모 및 자낭각이 관찰되었다 분생포자는 무색, 단포, 정부는 약간 둥글고 기부는 굵고 원통형 또는 약간 타원형으로 크기는 12.5-17.5 $\mu\textrm{m}$였다. 강모는 격막이 1~4 개 존재하며, 기부세포가 특징적으로 팽대되고 크기는 200 $\mu\textrm{m}$였다 부착기는 암갈색, 난형으로 크기는 5-12.5 $\mu\textrm{m}$이며, 괴사된 줄기상의 자낭각은 구형, 암갈색 또는 검은색으로 크기는 85-300 $\mu\textrm{m}$, 자낭은 곤봉형 또는 원통형이며 크기는 50-62.5$\times$8-10 $\mu\textrm{m}$로서 8개의 자낭포자를 형성하였다. 자낭포자는 타원형 또는 굽은 방추형이었다. 이 균의 불완전세대의 특징을 C. musae와 C. lindemuthianum과 비교하여 Glomerella cingulata(C. gloeosporioides)로 동정하였다.

• 한국균학회지
• /
• 제25권1호통권80호
• /
• pp.30-34
• /
• 1997

온주밀감의 병든 잎으로부터 분리된 분생포자세대와 병들어 죽은 가지로부터 분리된 유성세대의 형태학적 특정을 토대로 감귤 탄저병의 병원균은 Glomerella cingulata(분생포자 세대 Colletotrichum gloeosporioides)로 분리 동정되었다. 감귤 탄저병균은 온주밀감, 유자, 하귤 등의 잎에 상처 접종에 의해서 감염을 일으켰고, 균사 생장 및 분생포자 형성의 적온은 각각 $25{\sim}30^{\circ}C$범위였다. 잎과 가지에서 분리된 감귤 탄저병균의 균총의 생장 속도와 색, 분생포자와 부착기의 형태와 크기 등과 같은 특징들은 감귤류 저장병에 관여하는 FGG strain의 특징과 유사하였지만, 일부 형태 및 병원학적 특징이 FGG strain과 일치하지 않아 다른 strain일 가능성도 배제할 수 없다.

• Mycobiology
• /
• 제37권4호
• /
• pp.310-312
• /
• 2009

A total of 82 isolates of Colletotrichum species were obtained from anthracnose symptoms of highbush blueberry trees grown in the Gochang area of Korea during a disease survey in 2008. Out of the isolates, 75 were identified as Colletotrichum gloeosporioides and the others as C. acutatum based on their morphological and cultural characteristics. Twenty six of C. gloeosporioides isolates produced their teleomorph Glomerella cingulata in PDA culture. Three isolates of each C. gloeosporioides and C. acutatum caused anthracnose symptoms on the leaves by artificial inoculation, which were similar to what was observed in the orchards. Previously in Korea, only C. gloeosporioides has been reported as causing anthracnose in blueberries. This is the first report that C. acutatum causes anthracnose in the highbush blueberry in Korea.

• The Plant Pathology Journal
• /
• 제16권4호
• /
• pp.242-245
• /
• 2000

In 1999 and 2000, a rot of graft-cacti including Hylocereus trigonus (three-angled cactus), Gymnocalycium mihanovichii, and Chamaecereus silvestrii occurred in several greenhouses in major cactus-growing areas of Korea. Typical symptoms included a moist, light brown rot or a watery rot of the stems. A Colletotrichum sp. was isolated from the lesions. The fungus formed dark gray, dense or floccose colonies on potato dextrose agar, frequently forming many light pink acervuli often surrounded with setae. The hyaline, cylindrical conidia were one-celled with round ends. Appressoria were mostly semicircular or clavate. Thin-walled asci contained eight, one-celled, hyaline ascospores (biseriate in ascus). Ascopspores were strainht or curved, ellipsoidal or subcylindrical. Based on these characteristics, the fungus was identified as Glomerlla cingulata (anamorph : C. gloeosporioides). Wound inoculation of basal stems of the cactus by the mycelial plugs or conidia produced symptoms identical to those described above. Various cactus species were compared in susceptibility using stem disc inoculation. Cereus tetragonus, Eriocereus jusbertii, Myrtillocactus geomentrizans, and three-angled cacti from Mexico and Taiwan were susceptible, but C. peruvianus (Peruvian apple cactus) and Harrisia tortuosa not. This is the first report of G. cingulata causing stem rot of graft-cactus in Korea.

• 식물병과 농업
• /
• 제5권1호
• /
• pp.8-13
• /
• 1999

Twenty two different disease on strawberry have been reported in Korea. Their occurrence patterns were depended on the varieties cultivated. Fusarium wilt occurred seriously on var. Hokowase, a variety used for the fields or semi-forcing culture. In recent years, however, anthracnose occurred remarkably as the acreage of forcing culture increases. Consequently, anthracnose reduced the stand rate and yield of the strawberry. Average occurrence rate of anthracnose was 36.9% on major strawberry cropping areas. Nyoho and Akihime, which are popular varieties for the forcing culture, are considered to be susceptible, but Holiwase and Suhong are resistant against this disease. Colletotrichum gloeosporioides and Glomerella cingulata have been reported as casual agents for this disease in Korea. C. gloeosporoides was recently reported, but C. fragariae, known to be a strong pathogen in foreign countries, has bot been found yet in Korea. These two fungal pathogens showed significant differences in some characteristics such as major infection parts of plant and responses to temperatures as well as benomyl resistance. In addition, C. gloeosporioides is more pathogenic than G. cingulata. Because vinly sheltering is effective for control of anthracnose to protect water disposal of the pathogen during the seedling stages, it is strongly recommend to use this method in conjunction with integrated control programs.