• 한국식물병리학회지
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• 제14권3호
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• pp.247-252
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• 1998

A series of greenhouse test was conducted to evaluate infection of Calonectria ilicicola on soybean plants of different ages at time of inoculation. Lesion length and number of perithecia were determined on cultivars Braxton, Deltapine 726, and Riverside 699 that were 10∼40 days old and 4-10 days old at time of inoculation. Quadratic and linear relationships were described between plant age at inoculation and lesion length or perithecia production in greenhouse studies. Soybean seedlings exhibited low susceptibility to C. ilicicola regardless of cultivar susceptibility. On 8- or 1-0-days-old Braxton, lesion lenght and perithecia numbers were reduced. Lesion lengths were longest on plants 30 days old whereas perithecia production was greatest on plants 20∼30 days old at time of inoculation. Differences in lesion length and perithecia production that were observed on young plants (4∼10 days old) were similar to relative levels of susceptibility in soybean cultivars in greenhouse and field tests, suggesting that reaction to C. ilicicola in soybean cultivars may be determined early in plant development.

• International Journal of Industrial Entomology and Biomaterials
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• 제3권1호
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• pp.63-67
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• 2001

Surface morphology of perithecia of the powdery mildew fungus of mulberry, Phyllactinia corylea is described under scanning electron microscope. The perithecia have penicellate cells on the upper surface and at an average 17 acicular appendages towards the lower surface each emerging from a bulbous base. Many perithecial walls towards the base have shrunken walls. When the perithecia dry out they are pushed above the leaf surface by the acicular append-ages which then bend at the base. The bending of the appendages may be attributed to the shrinkage of lower wall cells due to loss of water.

• 한국균학회지
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• 제26권3호통권86호
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• pp.387-395
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• 1998

여러가지 기주에서 유쾌한 Calonectria ilicicola 균주의 병원성에 대한 형태적, 유전적 표지를 검출하기 위하여 균사생장, 균핵, 자낭각 그리고 dsRNA를 조사하였다. 시험된 모든 균주에서 병원성, 균핵수, 자낭각수 와 균사생장 등의 다양한 변이가 관찰되었으나 dsRNA는 검출되지 않았다. 균의 병원성은 균핵과 자낭각 생산과 각각 정의 상관관계가 있었으나, 균사 생장은 자낭각의 생산과 부의 상관관계를 보여 주었다. 땅콩에서 유래한 균주보다 콩에서 유래한 균주가 기주인 콩에 더 강한 병원성을 보였으며 균핵과 자낭각의 생산도 더 많았다. 이와 같은 결과로 볼 때 C. ilicicla의 균핵과 자낭각 생산력은 inoculum potential의 구성요소로써 작용하며, 이중 균의 자낭각 생산력은 병원성과 기주 분화를 나타내는데 유용한 표지로써 이용될 수 있을 것이다.

• 한국응용곤충학회지
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• 제16권4호
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• pp.211-215
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• 1977

오이류 덩굴마름병균(Didymella bryoniae)의 포자형성에 미치는 배지, 근자외선광과 화광색형광등 12시간 교호조사와 계속암흑처리의 영향을 조사하였다. Didymella bryoniae를 감자한천과 V-8 juice 한천에 배양하였을 때 광선은 병자각 및 자양각의 형성을 촉진하였으나 계속 암흑처리구의 포자형성은 낮았다. 그러나 균주에 따라서는 무광하에서도 병자각과 자양각을 형성할 수 있었다. V-8 juice 한천에 배양했을 때 자양각의 형성은 근자외선 보다는 화광색광선에서 촉진되었다. 일반적으로 광원에 관계없이 V-8 juice 한천에 배양한 것이 감자한천에 배양한 것보다 포자의 형성이 양호하였다. 감자한천에서 배양된 C. bryoniae의 각균주는 병포자의 대부분이 무격막의 소형 병포자였음에 비하여 V-8 juice 한천에 배양한 것은 무격막의 대형 병포자 또는 1개의 격막을 가진 병포자로써 병든 종자의 배축상에 형성된 배포자와 흡사하였다. 자양각의 외관은 병자각과는 판이하였으며 유두상 각공위에 백색의 포자괴가 형성되었다.

• 한국균학회지
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• 제5권1호
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• pp.33-37
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• 1977

포장(圃場)에서 키다리병(病)에 걸린 줄기와 종자(種子)로 부터 얻은 자낭각이 어느 종류(種類)의 Gibberella에 존재(存在)하며, 수확후(收穫後)에 얻은 자낭각의 생존(生存)여부를 조사(調査)하기 위하여 처리한 결과(結果)는 다음과 같다. 1. 종자소독(種子消毒)을 하지 않은 포장(圃場)에서 키다리병(病)의 이병율(罹病率)은 평균(平均) 12%이었다. 2. 수확전(收穫前)에 얻은 자낭각은 키다리병의 자낭각이 적미병의 자낭각보다 많았으나 종자(種子)나 봄에 채집한 자낭각은 거의 적미병에 있었다. 3. 키다리병에 이병된 벼에서 채종한 종자(種子)에서 키다리병, 적미병, Ophiobolus sp.는 10, 25, 8%로 나타났으며 이병(罹病)된 줄기로부터 얻은 포자(胞子)로 접종(接種)한 종자(種子)에서는 3, 10, 2%로 나타났다. 4. 적미병자낭각을 야외 땅속 실내 집눌속에 놓고 5개월이 지난다음 생존(生存)여부를 조사(調査)한 결과(結果) 야외에 놓은 것만 발아하지 않았다.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.151.2-151
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• 2003

One fungus was isolated from lesions on imported chinese cabbage leaves in process of quarantine inspection from China. The fungus was identified as Mycosphaerlla brassicicola, based on morphology of perithecia, asci, ascospore, and curtural characteristics. In Korea, this fungus has been quarantine fungus, and not yet report to occur. Perithecia of the fungus were globose, dark brown with apical papilate ostioles. The size was 90-100 ${\times}$ 130-135$\mu\textrm{m}$. Asci were bitunicate, 8-spored and 38-43 ${\times}$ 15-l9$\mu\textrm{m}$. Ascospore were irregularly biseriate, hyaline, cylindrical, 2-celled, and rounded at the ends. Optium growth temperature of the fungus was at 20$^{\circ}C$ on PDA but did rarely grow over 24$^{\circ}C$. Colony on PDA was of black aerial mycelia.

• 한국응용곤충학회지
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• 제16권4호
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• pp.209-210
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• 1977

Early in the growing season of 1976, rain and cool weather favored the blighting of leaves of young plants of barley by Fusarium nivale. The fungus was recovered in culture from infected foliage, and the perithecia of Calonectria nivalis were demonstrated to be present as well as the Fusarium state. On 22 April 1976, in Suweon, plants pulled at random revealed stem lesions from which F. nivale was cultured. On S May 1976 near Kwangju. Perithecia were found embedded within leaf sheaths and blades of mature wheat and barley plants. It was evident in the 1976, 1977 season that Fusarium(Calonectria) nivale was common but unrecognized as an early season pathogen of barley in Korea. The probable source of primary inoculum was the infected refuse from the previous season's barlry and wheat crops. Stem lesions caused by this fungus were considered to he detrimental to the maximum yield of barley or wheat.

• Mycobiology
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• 제28권1호
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• pp.51-53
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• 2000

The powdery mildew of safflower (Carthamus tinctorius L.) extensively occurred at 1999 at the experimental farm of Kyongsangnam-do Agricultural Research and Extension Services. Both sides of the leaves and the older stems were covered with the fungus, and then the leaves and stems turned yellow. The conidia, conidiophores and perithecia were observed on the leaf lesion. Perithecia were ellipsoidal, $80-117\;{\mu}m$ in diameter. Asci were subglobose and $84{\sim}99{\times}59{\sim}73\;{\mu}m$ in size. Ascospore were ellipsoidal to ovoid, and $15{\sim}34{\times}11{\sim}23\;{\mu}m$ in size. Conidia were ellipsoid to barrel-shaped, $25{\sim}37{\times}11{\sim}22\;{\mu}m$ in size and formed in long chains. The causal organism was identified as Sphaerotheca fuliginea. This is the first report on powdery mildew of safflower caused by Sphaerotheca fuliginea in Korea.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.125.2-125
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• 2003

Since 2000, severe rots on aerial and underground parts of paprika( Capsicum annum L.) has occurred in most cultivation glasshouses throughout the country. Totally 169 isolates of a fungus were consistently isolated from the diseased plant tissues of fruits, stems, branches, and roots collected from 19 farms in six provinces. Anamorph stage of the fungus was identified as Fusarium solani based on morphological characteristics. However, the fungus readily produced sexual structure of perithecia on infected plant tissues and on agar medium. Since the fungus formed abundant perithecia by single isolate, it was considered as a homothallic strain of Nectria hematococn, the teleomorph of F. solani. Irregularly globose perithecia with orange to red color formed sparsely to gregariously on dead tissues of fruits and basal stems at the 3ate infection stage, which is a diagnostic sign for the disease. Abundancy of perithecium varied among isolates and they sized 125-220$\mu\textrm{m}$ in diam. Asci enveloping eight ascospores were cylindrical and measured 60-80x8-12$\mu\textrm{m}$. Ellipsoid to obovate ascospores are two-celled and measured 11-l8${\times}$4-7$\mu\textrm{m}$. Ascospores are hyaline, slightly constricted at the central septum, and revealed longitudinal striations that is a typical trait of the species. This fungus that has never been reported in Korea previously became a threat to paprika cultivation because of its strong pathogenicity and nationwide distribution.

• The Plant Pathology Journal
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• 제21권4호
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• pp.317-321
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• 2005

Since 2000 severe rots on aerial and underground parts of paprika (Capsicum annum L.) has occurred in most surveyed glasshouses throughout the country. A total of 56 isolates of a fungus were consistently isolated from various plant parts such as fruit, stem, branch, and root collected from 16 farms in five provinces. Anamorph stage of the fungus was identified as Fusarium solani based on its morphological characteristics. However, the fungus readily produced a sexual structure of perithecia on infected plant tissues and on agar media. Since the fungus formed abundant perithecium by a single isolate, it was considered as a homothallic strain of Nectria haematococca, the teleomorph of F. solani. Irregularly globose perithecia with orange to red color formed sparsely to gregariously on dead tissues of fruits and basal stems at the late infection stage, which is a diagnostic sign for the disease. Perithecia ranged from 125 to 220 ${\mu}m$ in diameter varied among isolates. Asci enveloping eight ascospores were cylindrical and measured 60-80x8-12 ${\mu}m$. Ellipsoid to obovate ascospores are two-celled and measured 11-18x4-7 ${\mu}m$. Ascospores were hyaline, slightly constricted at the central septum, and revealed longitudinal striations that is characteristic of the species. This fungus that has never been reported in Korea has previously become a threat to paprika cultivation because of its strong pathogenicity and nationwide distribution.