• Title/Summary/Keyword: Morphological and cultural characteristics

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Anthracnose of Peanut Caused by Colletotrichum gloeosporioides (Colletotrichum gloeosporioides에 의한 땅콩 탄저병)

  • 김주희;이용훈;이왕휴
    • Korean Journal Plant Pathology
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    • v.14 no.6
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    • pp.614-617
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    • 1998
  • Anthracnose of peanut (Arachis hypogaea L.) was found in the peanut cultivating fields in Iksan, Korea in September 1997. Infected plants showed irregularly circular water soaking brown lesions. In the severe case, leaves and stems were entirely died. The causal fungus of anthracnose isolated from the diseased plants was identified as Colletotrichum gloeosporioides Penz. and its teleomorph was Glomerella cingulata (Stonem.) Spauld. & Sch. according to the criteria based on the cultural and morphological characteristics. By arificial inoculation with fungal spores on healthy peanut, anthracnose symptom was observed 15 days after inoculation.

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Isolation of Hydrogen Evolution Photosynthetic Bacteria Rhodobacter sphaeroides KS 56 (수소 생성 광합성 세균 Rhodobacter sphaeroides KS 56 분리)

  • 이은숙;권애란
    • The Korean Journal of Food And Nutrition
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    • v.10 no.4
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    • pp.549-552
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    • 1997
  • A purple non-sulfur photosynthetic bacteria which evolved molecular hydrogen efficiently from glucose in the presence of low concentration of NH4+ under light illuminated anaerobic condition was isolated from mud samples in Korea. This bacteria was identified on Rhodobacter sphaeroides KS 56 based on the morphological, cultural and physiological characteristics.

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Rhizoctonia Black Stem Rot of Saururi Herba Caused by Rhizoctoia solani (Rhizoctonia solani에 의한 삼백초 검은줄기썩음병(가칭))

  • 이기열
    • Korean Journal Plant Pathology
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    • v.14 no.2
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    • pp.184-185
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    • 1998
  • Rhizoctonia stem rot of Saururui herba [Saururus chinensis (Lour) Baill] was observed during plantations from 1996 to 1997 in Chungbuk area. Infected plant showed damping-off and stem rot at soil line. The causal fungus of stem rot isolated from the infected plant was identified as Rhizoctonia solani according to the criteria based on the cultural and morphological characteristics. The stem rot of Saururi herba caused by Rhizoctonia solani was first described in Korea, and the name the“Rhizoctonia black stem rot”is proposed.

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First Record of Alternaria simsimi Causing Leaf Spot on Sesame (Sesamum indicum L.) in Korea

  • Choi, Young Phil;Paul, Narayan Chandra;Lee, Hyang Burm;Yu, Seung Hun
    • Mycobiology
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    • v.42 no.4
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    • pp.405-408
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    • 2014
  • Leaf spot disease was observed in sesame (Sesamum indicum L.) during 2009 and 2010 in Korea. The pathogen was identified as Alternaria simsimi based on morphological and cultural characteristics. The morphological identification was well supported by phylogenetic analysis of the ribosomal DNA-internal transcribed spacer region. A. simsimi isolates caused spot symptoms on leaves and stems of sesame plants 2 wk after artificial inoculation, which were similar to those observed in the field. This is the first record of leaf spot disease in Korea caused by A. simsimi.

Cladophialophora lanosa sp. nov., a New Species Isolated from Soil

  • Das, Kallol;Lee, Seung-Yeol;Jung, Hee-Young
    • Mycobiology
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    • v.47 no.2
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    • pp.173-179
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    • 2019
  • Cladophialophora is characterized by simple hyphomycetes with brown hyphae that give rise to branched chains of pale brown conidia and shows affinities with the Herpotrichiellaceae. A fungal strain belonging to the genus Cladophialophora was isolated from soil in Daegu, Korea. This strain produces numerous greenish to dark black lanose aerial mycelia with hair like structures. It is morphological similar to C. chaetospira, C. inabaensis, and C. multiseptata; however, the conidiophores and conidia sizes of the newly isolated strain (KNU16-032) are clearly different from them. The novelty of the strain was also confirmed based on phylogenetic analysis using the data sets of the internal transcribed spacer region of and the partial sequence of 28S ribosomal DNA region along with the cultural characteristics. Because morphological observations and phylogenetic analysis indicated that the strain is distinct from previously known Cladophialophora species, we propose this species as a new species Cladophialophora lanosa sp. nov., and provide the detailed descriptions in this study.

Interpretation through Digital Imaging: Reflectance Transformation Imaging(RTI) as a Tool for Understanding Paintings

  • Min, Jihyun;Yoo, Eunsoon;Choi, Heesu;Ahn, Sohyun;Ahn, Jaehong;Ahn, Sangdoo
    • International Journal of Contents
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    • v.16 no.2
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    • pp.41-50
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    • 2020
  • This paper presents Reflectance Transformation Imaging (RTI) as a tool to support the study of paintings and authentication. Manufacturing techniques of the artist are reviewed through the comparison between liberal perspectives and digital imaging techniques. In this study, RTI was applied to focus on the detailed textural information of eight paintings by Korean artist Lee Ji-ho. The RTI result visualizes shallow reliefs of brush strokes and different mediums on the surface technically enhanced through imaging filters, and these morphological textures on the surface act as a key factor in understanding the characteristics of the artist. The surface morphology and art criticism work as qualitative indicators to analyze the change of artistic techniques through time, and the usage of different mediums. The results of this study confirm that the RTI technique can be used as an analysis device in the study of paintings.

Occurrence of Dumontinia tuberosa in Korea

  • Kim, Wan-Gyu;Seok, Soon-Ja;Lee, Min-Woo;Hong, Sung-Kee
    • Mycobiology
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    • v.37 no.2
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    • pp.155-157
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    • 2009
  • Thirty-seven single spore isolates were obtained from specimens of ascomycetous fruiting bodies collected from Mt. Suri, Anyang in Korea. The fungal specimens and isolates were identified as Dumontinia tuberosa based on their morphological and cultural characteristics. This is the first record of this fungus occurring in Korea.

Phialocephala lagerbergii: A New Record from Crop Field Soil in Korea

  • Adhikari, Mahesh;Kim, Sangwoo;Yadav, Dil Raj;Um, Yong Hyun;Kim, Hyung Seung;Lee, Hyang Burm;Lee, Youn Su
    • The Korean Journal of Mycology
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    • v.44 no.3
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    • pp.132-137
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    • 2016
  • A unrecorded hyphomycete species of Phialocephala was isolated for the first time during the investigation of fungal community in the soil samples collected from different regions of Korea. The fungal isolate was identified as Phialocephala lagerbergii, based on the morphological characteristics and phylogenetic analysis of the ribosomal DNA sequence. In addition, cultural and micro-morphological features were described in detail.

Morphological and Cultural Characteristics of Glomerella cingulata Causing Anthracnose of Citrus (감귤 탄저병균의 형태 및 배양적 특성)

  • Koh, Young-Jin;Song, Jang-Hoon;Ahn, Mi-Yeon;Moon, Doo-Khil;Han, Hae-Ryong;Kwon, Hyeog-Mo;Moon, Duck-Young
    • The Korean Journal of Mycology
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    • v.25 no.1 s.80
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    • pp.30-34
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    • 1997
  • Glomerella cingulata (conidial state: Colletotrichum gloeosporioides) was identified as the causal organism of anthracnose of citrus on the basis of morphological characteristics of the conidial state of the fungus isolated from infected leaves of Satsuma mandarin and its ascigerous state isolated from diseased twigs. The pathogen infected the leaves of Satsuma mandarin, citron and Natsu daidai only by wound inoculation. The optimum temperature range for mycelial growth and sporulation of conidia of the strain was $25{\sim}30^{\circ}C$, respectively. The characteristics of anthracnose strain of Satsuma mandarin such as growth rate and color of colony, shape and size of conidia, and appressoria were similar to those of FGG strain. However, the strain isolated from infected leaves and twigs of Satsuma mandarin was different from FGG strain to cause postharvest anthracnose of citrus, because some of morphological and pathological characteristics of the strain isolated did not correspond to those of FGG strain.

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Classification of Protected Flora through Delphi Method (전문가 델파이 조사를 통한 천연기념물 식물 유형 개발)

  • Son, Ji Won;Shin, Jin Ho;Lee, Jae Jin;Kim, Do Hee
    • Korean Journal of Heritage: History & Science
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    • v.49 no.4
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    • pp.218-227
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    • 2016
  • Protected Flora are natural heritage that involve a wide variety of valuable natural values and cultural values. Over time, "Cultural Properties Preservation Law" has been changing the definition and the criteria of Protected Flora. In addition to the academic value and the rarity of the plant, historical, ethnic and landscape values have become increasingly important. For that reason the declaration and management processes of the Protected Flora need to be improved. However, the current statute has focused on the morphological characteristics of the plants which have a limit to encompass various values of the plant. It also does not correspond to the definition of Protected Flora and its declaration criteria stated on the "Cultural Properties Preservation Law." For this reason, the main purpose of this study is to develop new types of Protected Flora so that various Protected Flora can be discovered in the future.