• 제목/요약/키워드: Talaromyces sp.

검색결과 10건 처리시간 0.025초

Talaromyces halophytorum sp. nov. Isolated from Roots of Limonium tetragonum in Korea

  • You, Young-Hyun;Aktaruzzaman, Md.;Heo, Inbeom;Park, Jong Myong;Hong, Ji Won;Hong, Seung-Beom
    • Mycobiology
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    • 제48권2호
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    • pp.133-138
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    • 2020
  • Talaromyces halophytorum sp. nov. was isolated from the roots of halophyte Limonium tetragonum collected from Seocheon-gun, Korea in November 2015. It showed a slow growth on yeast extract sucrose agar at 25 ℃, no growth at 4 ℃ or 37 ℃ and produced smooth-walled and globose to sub-globose conidia. T. halophytorum is phylogenetically distinct from the other reported Talaromyces species of section Trachyspermi based on multi-locus sequence typing results using partial fragments of β-tubulin, calmodulin, ITS, and RNA polymerase II genes.

Chemical Constituents Isolated from the Moss-derived Fungus Talaromyces sp.

  • Hwang, Hoseong;Kwon, Hak Cheol;Kwon, Jaeyoung
    • 한국자기공명학회논문지
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    • 제24권4호
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    • pp.123-128
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    • 2020
  • All plants in natural ecosystems are living in symbiosis with endophytes. Recently, there has been an increasing interest in endophytes since these organisms can interact with the hosts and produce various structurally or biologically interesting molecules. This study aimed to identify these molecules from endophytes. Chemical investigation of Climacium dendroides-derived fungus Talaromyces sp. resulted in the isolation of two diphenyl ether derivatives, purpactin A (1) and penicillide (2), and two steroids, dankasterone A (3) and calvasterol B (4). The structures of the compounds were identified via extensive spectroscopic and spectrometric methods. Four compounds did not show any antioxidative activities in the on-line antioxidant activity screening system.

A New Species and Five New Records of Talaromyces (Eurotiales, Aspergillaceae) Belonging to Section Talaromyces in Korea

  • Thuong T. T. Nguyen;Hyang Burm Lee
    • Mycobiology
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    • 제51권5호
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    • pp.320-332
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    • 2023
  • Talaromyces is a genus within the phylum Ascomycota (class Eurotiomycetes, order Eurotiales, family Trichocomaceae). Many species in this genus are known to produce diverse secondary metabolites with great potential for agricultural, medical, and pharmaceutical applications. During a survey on fungal diversity in the genus Talaromyces in Korea, six strains were isolated from soil, indoor air, and freshwater environments. Based on morphological, physiological, and multi-locus (ITS, BenA, CaM, and RPB2) phylogenetic analyses, we identified five previously unrecorded species in Korea (T. brevis, T. fusiformis, T. muroii, T. ruber, and T. soli) and a new species (T. echinulatus sp. nov.) belonging to section Talaromyces. Herein, detailed descriptions, illustrations, and phylogenetic tree are provided.

독도의 자생식물 뿌리에서 분리한 내생진균의 다양성과 생장촉진활성 (Diversity and Plant Growth-Promotion of Endophytic Fungi Isolated from the Roots of Plants in Dokdo Islands)

  • 유영현;윤혁준;이길성;우주리;임순옥;신재호;이인중;추연식;김종국
    • 생명과학회지
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    • 제21권7호
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    • pp.992-996
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    • 2011
  • 독도에 자생하고 있는 식물의 뿌리로부터 내생진균의 분리를 시도하여, 동도로 부터 참억새, 돌피, 쇠무릎과 서도에서 갯별꽃 및 율무쑥등을 연구재료로 사용하였다. 총 21종의 내생진균을 분리하였고, universal primers ITS-1과 ITS-4를 사용하여 ITS 영역을 PCR로 증폭하여 동정하였다. 염기서열 분석결과, 동도에 자생하는 참억새에서는 Penicillium 속 균주가 75%, Aspergillus 균주가 25%, 분리되었고, 돌피에서는 Penicillium 속 균주가 55%, Aspergillus 속 균주가 30%, Zygorhynchus 속 균주가 15%가 분리되었으며, 쇠무릎에서는 Penicillium 속 균주가 50%, Aspergillus 속 균주가 12%, Gibberella 속 균주가 13%, Talaromyces 속 균주가 9%, Umbelopsis 속 균주가 8% 분리되었다. 서도에 자생하는 갯별꽃에서는 Penicillium 속 균주가 76%, Pestalotiopsis 속 균주가 24% 분리되었고, 율무쑥에서는 Penicillium 속 균주가 81%, Mucor 속 균주가 19% 분리되었다. Bioassay결과, 돌피에서 분리된 Ec-3-1균주가 식물생장촉진활성을 나타내었다. 그리고 독도의 5종류 식물에서 Penicillium 속의 내생진균이 가장 많이 존재함을 알 수 있었다.

소곡주 공장의 공기로부터 곰팡이의 분리 및 동정 (Isolation and Identification of Filamentous Fungi from Indoor Air of a Sogokju Traditional Rice Wine Factory)

  • 박지은;전영재;김지혜;김성환
    • 한국균학회지
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    • 제36권1호
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    • pp.1-8
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    • 2008
  • 전통주인 소곡주 공장의 실내공기에 존재하는 균류상을 조사하기 위하여 앤더슨 공기 포집기를 이용하여 소곡주 공장의 여러 방으로부터 포집된 공기와 이곳에서 주정제조를 위해 사용해온 누룩으로부터 균류를 분리하고 분석하였다. Aspergillus, Penicillium, Gibberella, Cladosporium, Talaromyces 속에 속하는 12가지 균류종이 분리되었다. 이들 중 주요 균류는 Aspergillus와 Penicillium에 속하는 균종이 다수를 차지하였다. 특히 Penicillium 속에 속하는 종으로는 7개의 종이 분리 되었으며 조사된 방마다 각각 서로 다른 종이 분리되었다. 누룩으로부터는 공기 중에서 검출된 Aspergillus 그룹과 동일한 그룹이 검출되었고 동시에 공기중에서는 존재하지 않았던 Rhizopus sp.가 분리되어졌다. 본 연구는 국내에서는 처음으로 전통주 제조 공장의 실내 공기 중에 존재하는 균류상에 대한 보고이다.

적송 (Pinus densiflora) 림내 송이(Tricholoma matsutake) 발생지와 미발생지의 토양 균류의 수직 분포 (Microfungal flora of Tricholoma matsutake producing and nonproducing sites in the forest of Pinus densiflora)

  • 송현순;민경희
    • 한국균학회지
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    • 제19권2호
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    • pp.109-119
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    • 1991
  • 송이 (Tricholoma matsutake) 생산의 대표적인 지역으로 알려진 강원도 양양 지역과 명주 지역을 선택하여 송이 발생지와 미발생지의 미세균류를 분리 동정하였으며 수직분포를 조사하였다. 진균의 선별방법으로 희석법, $42^{\circ}C$에서 48시간 배양 후 $37^{\circ}C$로 배양하는 방법, $70^{\circ}C$에서 15분간 열처리 방법, 그리고 ethanol처리 방법으로 토양의 수직적 분포를 파악하였다. $42^{\circ}C$배양법에서는 두 장소에서 분리된 토양균은 7속 18종이 분리되었으며, 송이 발생지에서는 Aspergillus fumigatus, A. ochraceus, A. terreus, Acremonium sp., Penicillium frequentans, Talarom-yces stipitatus가 분리되었으며, 송이 미발생지에서는 Aspergillus fumigatus, Penicillium lilacinum, P. oxalicum, Westerdykella multispora가 우점종으로 나타났다. $70^{\circ}C$열처리 방법으로 분리한 경우 7속20종이 분리되었으며, 송이발생지에서는 Aspergillus fumigatus, Mucor sp. 가 우점적으로 나타났으며, 송이 미발생지에서는 A. iumigatus, Atternaria alter-nate, Mucor sp., Neurospora sitophita가 우점종으로 나타났다. Ethanol처리 방법으로 분리한 경우는 1속 1종이 분리되었으며, 송이 발생지와 미발생지에 관계없이 우점종은 Mortierella sp.로 분류되었다. 이들 분리된 토양균은 전체균의 수와 우점종균수 그리고 나타나는 종의 빈도수는 그 수직적 분포에 있어서 상층에서 하층으로 내려갈수록 감소하였다.

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목이버섯 배지 오염 곰팡이균의 분리, 동정 및 생물학적 방제제 선발 (Isolation and Identification of Competitive Fungi on Medium for Black Wood Ear Mushroom in Korea and In Vitro Selection of Potential Biocontrol Agents)

  • 김서연;조미주;안선민;박지윤;박지원;홍성국;김지우;차주훈;노유진;김다솜;전미진;지원재;박숙영
    • 식물병연구
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    • 제30권1호
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    • pp.66-77
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    • 2024
  • 목이버섯(A. auricula-judae)은 중국, 일본, 한국에서 경제적으로 중요한 버섯이다. 인공 배지에서 목이버섯을 재배할 경우 자연적으로 나무에서 키울 때보다 시간과 비용 면에서 더 효율적이다. 그러나 배지 재배의 경우 빠르게 자라는 곰팡이에 감염할 경우 성장이 느린 목이버섯이 배지 경쟁에서 밀려나 경제적 손실이 발생한다. 이 연구에서는 전라남도 장흥과 순천에서 목이버섯 재배용 배지에 감염한 푸른곰팡이들을 분리 및 동정하였다. 총 54개의 균주를 수집한 뒤 ITS 염기서열 분석 및 형태학적 동정을 수행하였다. 총 54개 균주 중 Trichoderma spp.가 92.6%, Penicillium spp.가 5.6%, Talaromyces sp.가 1.8%였다. 친환경 방제제를 선발하기 위해 우리는 6개의 Streptomyces spp. 균주를 선발하고 Benomyl을 대조군으로 사용하여 분리균주인 Trichoderma spp.와 Penicillium spp.에 대한 길항성 검정을 수행하였다. 이 중 Streptomyces sp. 203-3이 Trichoderma spp.와 Penicillium spp.에 가장 높은 균사저지 효과를 보여, 목이버섯 배지에 감염하는 곰팡이에 대한 잠재적인 방제제로의 가능성을 보였다.

New Species and Eight Undescribed Species Belonging to the Families Aspergillaceae and Trichocomaceae in Korea

  • Nguyen, Thuong T.T.;Noh, Kyo Jang Kwan;Lee, Hyang Burm
    • Mycobiology
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    • 제49권6호
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    • pp.534-550
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    • 2021
  • During a survey of fungal diversity associated with insects, mud, soil, and freshwater niches in different areas in Korea, nine interesting fungal strains were isolated. Based on their morphological characteristics and molecular phylogeny analyses, using a combined data set of b-tubulin (BenA), calmodulin (CaM), and second largest subunit of RNA polymerase (RPB2) sequences, the strains CNUFC AM-44, CNUFC JCW3-4, CNUFC S708, CNUFC WT202, CNUFC AS1-29, CNUFC JCW3-5, CNUFC JDP37, and CNUFC JDP62 were identified as Aspergillus alabamensis, A. floridensis, A. subversicolor, Penicillium flavigenum, P. laevigatum, P. lenticrescens, Talaromyces adpressus, and T. beijingensis, respectively. The strain CNUFC JT1301 belongs to series Westlingiorum in section Citrina and is phylogenetically related to P. manginii. However, slow growth when cultivated on CYA, MEA, CREA is observed and the property can be used to easily distinguish the new species from these species. Additionally, P. manginii is known to produce sclerotia, while CNUFC JT1301 strain does not. Herein, the new fungal species is proposed as P. aquadulcis sp. nov. Eight species, A. alabamensis, A. floridensis, A. subversicolor, P. flavigenum, P. laevigatum, P. lenticrescens, T. adpressus, and T. beijingensis, have not been previously reported in Korea. The present study expands the known distribution of fungal species belonging to the families Aspergillaceae and Trichocomaceae in Korea.

Isolation and Identification of Fungal Species from the Insect Pest Tribolium castaneum in Rice Processing Complexes in Korea

  • Yun, Tae-Seong;Park, Sook-Young;Yu, Jihyun;Hwang, Yujin;Hong, Ki-Jeong
    • The Plant Pathology Journal
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    • 제34권5호
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    • pp.356-366
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    • 2018
  • The red flour beetle, Tribolium castaneum, is one of the most common and economically important pests of stored cereal products worldwide. Furthermore, these beetles can act as vectors for several fungal post-harvest diseases. In this study, we collected T. castaneum from 49 rice processing complexes (RPCs) nationwide during 2016-2017 and identified contaminating fungal species on the surface of the beetles. Five beetles from each region were placed on potato dextrose agar media or Fusarium selection media after wet processing with 100% relative humidity at $27^{\circ}C$ for one week. A total of 142 fungal isolates were thus collected. By sequence analysis of the internal transcribed spacer region, 23 fungal genera including one unidentified taxon were found to be associated with T. castaneum. The genus Aspergillus spp. (28.9%) was the most frequently present, followed by Cladosporium spp. (12.0%), Hyphopichia burtonii (9.2%), Penicillium spp. (8.5%), Mucor spp. (6.3%), Rhizopus spp. (5.6%), Cephaliophora spp. (3.5%), Alternaria alternata (2.8%) and Monascus sp. (2.8%). Less commonly identified were genera Fusarium, Nigrospora, Beauveria, Chaetomium, Coprinellus, Irpex, Lichtheimia, Trichoderma, Byssochlamys, Cochliobolus, Cunninghamella, Mortierella, Polyporales, Rhizomucor and Talaromyces. Among the isolates, two known mycotoxin-producing fungi, Aspergillus flavus and Fusarium spp. were also identified. This result is consistent with previous studies that surveyed fungal and mycotoxin contamination in rice from RPCs. Our study indicates that the storage pest, T. castaneum, would play an important role in spreading fungal contaminants and consequently increasing mycotoxin contamination in stored rice.

Diversity of Endophytic Fungi from Different Verticillium-Wilt-Resistant Gossypium hirsutum and Evaluation of Antifungal Activity Against Verticillium dahliae In Vitro

  • Li, Zhi-Fang;Wang, Ling-Fei;Feng, Zi-Li;Zhao, Li-Hong;Shi, Yong-Qiang;Zhu, He-Qin
    • Journal of Microbiology and Biotechnology
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    • 제24권9호
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    • pp.1149-1161
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    • 2014
  • Cotton plants were sampled and ranked according to their resistance to Verticillium wilt. In total, 642 endophytic fungi isolates representing 27 genera were recovered from Gossypium hirsutum root, stem, and leaf tissues, but were not uniformly distributed. More endophytic fungi appeared in the leaf (391) compared with the root (140) and stem (111) sections. However, no significant difference in the abundance of isolated endophytes was found among resistant cotton varieties. Alternaria exhibited the highest colonization frequency (7.9%), followed by Acremonium (6.6%) and Penicillium (4.8%). Unlike tolerant varieties, resistant and susceptible ones had similar endophytic fungal population compositions. In three Verticillium-wilt-resistant cotton varieties, fungal endophytes from the genus Alternaria were most frequently isolated, followed by Gibberella and Penicillium. The maximum concentration of dominant endophytic fungi was observed in leaf tissues (0.1797). The evenness of stem tissue endophytic communities (0.702) was comparatively more uniform than the other two tissues. Eighty endophytic fungi selected from 27 genera were evaluated for their inhibition activity against highly virulent Verticillium dahliae isolate Vd080 in vitro. Thirty-nine isolates exhibited fungistasis against the pathogen at varying degrees. Seven species, having high growth inhibition rates (${\geq}75%$), exhibited strong antifungal activity against V. dahliae. The antifungal activity of both volatile and nonvolatile metabolites was also investigated. The nonvolatile substances produced by CEF-818 (Penicillium simplicissimum), CEF-325 (Fusarium solani), CEF-714 (Leptosphaeria sp.), and CEF-642 (Talaromyces flavus) completely inhibited V. dahliae growth. These findings deepen our understanding of cotton-endophyte interactions and provide a platform for screening G. hirsutum endophytes with biocontrol potential.