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한국균학회> Mycobiology> First Report of Six Macrofungi from Daecheongdo and Socheongdo Islands, Korea

KCI등재

First Report of Six Macrofungi from Daecheongdo and Socheongdo Islands, Korea

Minkyeong Kim , Jin Sung Lee , Jae Young Park , Changmu Kim
  • : 한국균학회
  • : Mycobiology 49권5호
  • : 연속간행물
  • : 2021년 10월
  • : 454-460(7pages)
Mycobiology

DOI


목차

1. Introduction
2. Materials and methods
3. Results and discussion
4. Taxonomy
Disclosure statement
Funding
ORCID
References

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초록 보기

Daecheongdo and Socheongdo Islands are located in the West Sea of Korea, 210km away from land, and are military border areas very close to North Korea, making them difficult to access. Although the ecosystem of the islands is relatively well preserved due to the lack of accessibility, research on fungi of the regions is insufficient. Therefore, we aimed to investigate indigenous fungi in these geographically and geopolitically constrained regions. A survey of the indigenous fungal diversity of the islands was conducted in 2018. All specimens were identified at the species level based on morphological and molecular analyses. Among them, six macrofungi―namely, Agaricus menieri, Crepidotus praecipuus, Dichomitus squalens, Hortiboletus amygdalinus, Melanoleuca friesii, and Trametes lactinea―were not previously reported in Korea. Considering that the proportion of unrecorded species is high in the survey area and period as well as the number of samples collected, similar research on adjacent islands may be necessary.

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  • : KCI등재
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  • : 격월
  • : 1229-8093
  • : 2092-9323
  • : 학술지
  • : 연속간행물
  • : 2000-2021
  • : 1184


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49권5호(2021년 10월) 수록논문
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KCI등재

1Phallus chiangmaiensis sp. nov. and a Record of P. merulinus in Thailand

저자 : Sujinda Sommai , Phongsawat Khamsuntorn , Sayanh Somrithipol , Janet Jennifer Luangsa-ard , Umpawa Pinruan

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 439-453 (15 pages)

다운로드

(기관인증 필요)

초록보기

During the rainy season in Thailand, specimens of Phallus chiangmaiensis sp. nov. and P. merulinus were collected from Chiang Mai and Samut Sakhon Provinces, respectively. Molecular phylogenetic analyses based on sequences of the nuclear ribosomal large subunit (LSU), nuclear ribosomal 5.8S gene including the internal transcribed spacer regions 1 and 2 (ITS), and the protein-coding gene atp6 (mitochondrial adenosine triphosphate [ATP] synthase subunit 6) support the placement of the new species within Phallus. Phallus chiangmaiensis has a well-developed white indusium and campanulated caps with reticulate surfaces. It differs morphologically from the related species, as supported by the phylogenetic data. Phallus merulinus is reported here as a species that was re-encountered in Thailand. The descriptions of the species are accompanied by illustrations of macro- and micro- morphological features, and a discussion of the related taxa is presented.

KCI등재

2First Report of Six Macrofungi from Daecheongdo and Socheongdo Islands, Korea

저자 : Minkyeong Kim , Jin Sung Lee , Jae Young Park , Changmu Kim

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 454-460 (7 pages)

다운로드

(기관인증 필요)

초록보기

Daecheongdo and Socheongdo Islands are located in the West Sea of Korea, 210km away from land, and are military border areas very close to North Korea, making them difficult to access. Although the ecosystem of the islands is relatively well preserved due to the lack of accessibility, research on fungi of the regions is insufficient. Therefore, we aimed to investigate indigenous fungi in these geographically and geopolitically constrained regions. A survey of the indigenous fungal diversity of the islands was conducted in 2018. All specimens were identified at the species level based on morphological and molecular analyses. Among them, six macrofungi―namely, Agaricus menieri, Crepidotus praecipuus, Dichomitus squalens, Hortiboletus amygdalinus, Melanoleuca friesii, and Trametes lactinea―were not previously reported in Korea. Considering that the proportion of unrecorded species is high in the survey area and period as well as the number of samples collected, similar research on adjacent islands may be necessary.

KCI등재

3Determination of Diversity, Distribution and Host Specificity of Korean Laccaria Using Four Approaches

저자 : Hae Jin Cho , Ki Hyeong Park , Myung Soo Park , Yoonhee Cho , Ji Seon Kim , Chang Wan Seo , Seung-yoon Oh , Young Woon Lim

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 461-468 (8 pages)

다운로드

(기관인증 필요)

초록보기

The genus Laccaria (Hydnangiaceae, Agaricales) plays an important role in forest ecosystems as an ectomycorrhizal fungus, contributing to nutrient cycles through symbiosis with many types of trees. Though understanding Laccaria diversity and distribution patterns, as well as its association with host plants, is fundamental to constructing a balanced plant diversity and conducting effective forest management, previous studies have not been effective in accurately investigating, as they relied heavily on specimen collection alone. To investigate the true diversity and distribution pattern of Laccaria species and determine their host types, we used four different approaches: specimen-based analysis, open database search (ODS), NGS analysis, and species-specific PCR (SSP). As a result, 14 Laccaria species have been confirmed in Korea. Results regarding the species distribution pattern were different between specimen-based analysis and SSP. However, when both were integrated, the exact distribution pattern of each Laccaria species was determined. In addition, the SSP revealed that many Laccaria species have a wide range of host types. This study shows that using these four different approaches is useful in determining the diversity, distribution, and host of ECM fungi. Furthermore, results obtained for Laccaria will serve as a baseline to help understand the role of ECM fungi in forest management in response to climate change.

KCI등재

4Mrakia terrae sp. nov. and Mrakia soli sp. nov., Two Novel Basidiomycetous Yeast Species Isolated from Soil in Korea

저자 : Yuna Park , Soohyun Maeng , Junsang Oh , Gi-ho Sung , Sathiyaraj Srinivasan

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 469-475 (7 pages)

다운로드

(기관인증 필요)

초록보기

Three strains, YP416T, YP421T, and Y422, were isolated from soil samples in Pocheon City, Gyeonggi province, South Korea. The strains belong to two novel yeast species in the genus Mrakia. Molecular phylogenetic analysis showed that the strain YP416T was closely related to Mrakia niccombsii. Still, it differed by 9 nucleotide substitutions with no gap (1.51%) in the D1/D2 domain of the LSU rRNA gene and 14 nucleotide substitutions with 7 gaps (2.36%) in the ITS region. The strain YP421T differed from the type strain of the most closely related species, Mrakia aquatica, by 5 nucleotide substitutions with no gap (0.81%) in the D1/D2 domain of the LSU rRNA gene and 9 nucleotide substitutions with one gap (1.43%) in the ITS region. The names Mrakia terrae sp. nov. and Mrakia soli sp. nov. are proposed, with type strains YP416T (KCTC 27886T) and YP421T (KCTC 27890T), respectively. MycoBank numbers of the strains YP416T and YP421T are MB 836844 and MB 836847, respectively.

KCI등재

5High-Temperature-Tolerant Fungus and Oomycetes in Korea, Including Saksenaea longicolla sp. nov.

저자 : Bora Nam , Dong-jae Lee , Young-joon Choi

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 476-490 (15 pages)

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(기관인증 필요)

초록보기

Global temperatures are steadily increasing, leading to significant changes in microbial diversity and ecology. In the present study, we isolated high-temperature-growing fungi and fungi-like group (Oomycota) strains from freshwater environments of Korea and identified them based on cultural, morphological, and multilocus phylogenetic analyses. As a result, we introduce Saksenaea (Fungi) isolates as a new species, Saksenaea longicolla sp. nov. and record Phytophthora chlamydospora and P. lagoariana (Oomycota) new to Korea. In the growth experiments, they exhibited high-temperature tolerance, which can grow at 35-40 ℃ but become inactive at 4 ℃ and below. This study confirms the presence of high-temperature- tolerant fungi and oomycetes in Korea and suggests that the Korean climate conditions are changing in favor of these species. This indicates that climate warming is altering microbial distributions in freshwater environments.

KCI등재

6Optimization of Agrobacterium tumefaciens-Mediated Transformation of Xylaria grammica EL000614, an Endolichenic Fungus Producing Grammicin

저자 : Min-hye Jeong , Jung A. Kim , Seogchan Kang , Eu Ddeum Choi , Youngmin Kim , Yerim Lee , Mi Jin Jeon , Nan Hee Yu , Ae Ran Park , Jin-cheol Kim , Soonok Kim , Sook-young Park

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 491-497 (7 pages)

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(기관인증 필요)

초록보기

An endolichenic fungus Xylaria grammica EL000614 produces grammicin, a potent nematicidal pyrone derivative that can serve as a new control option for root-knot nematodes. We optimized an Agrobacterium tumefaciens-mediated transformation (ATMT) protocol for X. grammica to support genetic studies. Transformants were successfully generated after co-cultivation of homogenized young mycelia of X. grammica with A. tumefaciens strain AGL-1 carrying a binary vector that contains the bacterial hygromycin B phosphotransferase (hph) gene and the eGFP gene in T-DNA. The resulting transformants were mitotically stable, and PCR analysis showed the integratin of both genes in the genome of transformants. Expression of eGFP was confirmed via fluorescence microscopy. Southern analysis showed that 131 (78.9%) out of 166 transformants contained a single T-DNA insertion. Crucial factors for producing predominantly single T-DNA transformants include 48 h of co-cultivation, pretreatment of A. tumefaciens cells with acetosyringone before co-cultivation, and using freshly prepared mycelia. The established ATMT protocol offers an efficient tool for random insertional mutagenesis and gene transfer in studying the biology and ecology of X. grammica.

KCI등재

7Antifungal Activity of an Endophytic Fungus Aspergillus versicolor DYSJ3 from Aphanamixis grandifolia Blume against Colletotrichum musae

저자 : Xiaoyu Li , Yateng Wu , Zhiqiang Liu

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 498-506 (9 pages)

다운로드

(기관인증 필요)

초록보기

An endophytic fungus strain DYSJ3 was isolated from a stem of Aphanamixis grandifolia Blume, which was identified as Aspergillus versicolor based on the morphological characteristics, internal transcribed spacer (ITS) and calmodulin gene sequences analyses. A. versicolor DYSJ3 exhibited strong antagonistic activity against Colletotrichum musae, C. gloeosporioides and Fusarium oxysporum f. sp. cubense with the inhibition rates of 61.9, 51.2 and 55.3% respectively. The antifungal metabolites mainly existed in the mycelium of A. versicolor DYSJ3, and its mycelial crude extract (CE) had broad-spectrum antifungal activities against plant pathogenic fungi. The CE had a good thermal stability, and the inhibition rate of 100 mg/mL CE against C. musae was above 70.0% after disposing at 120 ℃ for 1 h. Five secondary metabolites were isolated from the CE and identified as averufanin, ergosterol peroxide, versicolorin B, averythrin and sterigmatocystin. Activity evaluation showed versicolorin B exhibited inhibitory effects on the mycelial growth and conidial germination of C. musae, and sterigmatocystin had a weak inhibitory effect on the mycelial growth of C. musae.

KCI등재

8Removal of Manganese and Copper from Aqueous Solution by Yeast Papiliotrema huenov

저자 : Phu Nguyen Van , Hai Thi Hong Truong , Tuan Anh Pham , Tuan Le Cong , Tien Le , Kim Cuc Thi Nguyen

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 507-520 (14 pages)

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Papiliotrema huenov was previously reported to be highly tolerant of a range of extremely toxic heavy metals. This study aimed to identify the potential of P. huenov to remove manganese and copper from aqueous solution. Physical conditions which affect removal of Mn(II) and Cu(II) were determined. Optimal temperature for adsorption of both metal ions was 30 ℃, and optimal pH for maximum uptake of Mn(II) and Cu(II) were 5 and 6, respectively. Under these conditions, living cells of P. huenov accumulated up to 75.58% of 110mg/ L Mn(II) and 70.5% of 128mg/L Cu(II) over 120 h, whereas, the removal efficiency of metal ions by dead cells over 1 h was 60.3% and 56.5%, respectively. These results indicate that living cells are more effective than dead biomass for bioremediation, but that greater time is required. The experimental data extends the potential use of P. huenov in biosorption and bioaccumulation of toxic heavy metals to copper and manganese, two of the most common industrial contaminants.

KCI등재

9Zygotorulaspora cornina sp. nov. and Zygotorulaspora smilacis sp. nov., Two Novel Ascomycetous Yeast Species Isolated from Plant Flowers and Fruits

저자 : Chorong Ahn , Minkyeong Kim , Changmu Kim

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 521-526 (6 pages)

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Three isolates belonging to the ascomycetous genus Zygotorulaspora were obtained from the fruits of Cornus officinalis and Smilax china, and flowers of Dendranthema zawadskii var. latilobum in Gongju-si, Korea. Phylogenetic Analyses of the LSU D1/D2 domain and ITS region sequences supported the recognition of two new species: Zygotorulaspora cornina sp. nov. (type strain NIBRFGC000500475 ¼ KACC93346PPP) and Zygotorulaspora smilacis sp. nov. (type strain NIBRFGC000500476 ¼ KACC93347PPP). The two novel species revealed no growth on D-Galactose, unlike the other six species in the genus Zygotorulaspora. They are distinguished from each other by their phylogenetic differences and phenotypic characteristics such as assimilation of xylitol, 5-keto-D-gluconate, and ethanol. All species in the genus Zygotorulaspora including the two novel species have phenotypic traits of genus Zygotorulaspora: asci are persistent, sucrose and raffinose are assimilated, and m-inositol is not required for growth, and they are mainly associated with plants.

1
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KCI등재

1Phallus chiangmaiensis sp. nov. and a Record of P. merulinus in Thailand

저자 : Sujinda Sommai , Phongsawat Khamsuntorn , Sayanh Somrithipol , Janet Jennifer Luangsa-ard , Umpawa Pinruan

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 439-453 (15 pages)

다운로드

(기관인증 필요)

초록보기

During the rainy season in Thailand, specimens of Phallus chiangmaiensis sp. nov. and P. merulinus were collected from Chiang Mai and Samut Sakhon Provinces, respectively. Molecular phylogenetic analyses based on sequences of the nuclear ribosomal large subunit (LSU), nuclear ribosomal 5.8S gene including the internal transcribed spacer regions 1 and 2 (ITS), and the protein-coding gene atp6 (mitochondrial adenosine triphosphate [ATP] synthase subunit 6) support the placement of the new species within Phallus. Phallus chiangmaiensis has a well-developed white indusium and campanulated caps with reticulate surfaces. It differs morphologically from the related species, as supported by the phylogenetic data. Phallus merulinus is reported here as a species that was re-encountered in Thailand. The descriptions of the species are accompanied by illustrations of macro- and micro- morphological features, and a discussion of the related taxa is presented.

KCI등재

2First Report of Six Macrofungi from Daecheongdo and Socheongdo Islands, Korea

저자 : Minkyeong Kim , Jin Sung Lee , Jae Young Park , Changmu Kim

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 454-460 (7 pages)

다운로드

(기관인증 필요)

초록보기

Daecheongdo and Socheongdo Islands are located in the West Sea of Korea, 210km away from land, and are military border areas very close to North Korea, making them difficult to access. Although the ecosystem of the islands is relatively well preserved due to the lack of accessibility, research on fungi of the regions is insufficient. Therefore, we aimed to investigate indigenous fungi in these geographically and geopolitically constrained regions. A survey of the indigenous fungal diversity of the islands was conducted in 2018. All specimens were identified at the species level based on morphological and molecular analyses. Among them, six macrofungi―namely, Agaricus menieri, Crepidotus praecipuus, Dichomitus squalens, Hortiboletus amygdalinus, Melanoleuca friesii, and Trametes lactinea―were not previously reported in Korea. Considering that the proportion of unrecorded species is high in the survey area and period as well as the number of samples collected, similar research on adjacent islands may be necessary.

KCI등재

3Determination of Diversity, Distribution and Host Specificity of Korean Laccaria Using Four Approaches

저자 : Hae Jin Cho , Ki Hyeong Park , Myung Soo Park , Yoonhee Cho , Ji Seon Kim , Chang Wan Seo , Seung-yoon Oh , Young Woon Lim

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 461-468 (8 pages)

다운로드

(기관인증 필요)

초록보기

The genus Laccaria (Hydnangiaceae, Agaricales) plays an important role in forest ecosystems as an ectomycorrhizal fungus, contributing to nutrient cycles through symbiosis with many types of trees. Though understanding Laccaria diversity and distribution patterns, as well as its association with host plants, is fundamental to constructing a balanced plant diversity and conducting effective forest management, previous studies have not been effective in accurately investigating, as they relied heavily on specimen collection alone. To investigate the true diversity and distribution pattern of Laccaria species and determine their host types, we used four different approaches: specimen-based analysis, open database search (ODS), NGS analysis, and species-specific PCR (SSP). As a result, 14 Laccaria species have been confirmed in Korea. Results regarding the species distribution pattern were different between specimen-based analysis and SSP. However, when both were integrated, the exact distribution pattern of each Laccaria species was determined. In addition, the SSP revealed that many Laccaria species have a wide range of host types. This study shows that using these four different approaches is useful in determining the diversity, distribution, and host of ECM fungi. Furthermore, results obtained for Laccaria will serve as a baseline to help understand the role of ECM fungi in forest management in response to climate change.

KCI등재

4Mrakia terrae sp. nov. and Mrakia soli sp. nov., Two Novel Basidiomycetous Yeast Species Isolated from Soil in Korea

저자 : Yuna Park , Soohyun Maeng , Junsang Oh , Gi-ho Sung , Sathiyaraj Srinivasan

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 469-475 (7 pages)

다운로드

(기관인증 필요)

초록보기

Three strains, YP416T, YP421T, and Y422, were isolated from soil samples in Pocheon City, Gyeonggi province, South Korea. The strains belong to two novel yeast species in the genus Mrakia. Molecular phylogenetic analysis showed that the strain YP416T was closely related to Mrakia niccombsii. Still, it differed by 9 nucleotide substitutions with no gap (1.51%) in the D1/D2 domain of the LSU rRNA gene and 14 nucleotide substitutions with 7 gaps (2.36%) in the ITS region. The strain YP421T differed from the type strain of the most closely related species, Mrakia aquatica, by 5 nucleotide substitutions with no gap (0.81%) in the D1/D2 domain of the LSU rRNA gene and 9 nucleotide substitutions with one gap (1.43%) in the ITS region. The names Mrakia terrae sp. nov. and Mrakia soli sp. nov. are proposed, with type strains YP416T (KCTC 27886T) and YP421T (KCTC 27890T), respectively. MycoBank numbers of the strains YP416T and YP421T are MB 836844 and MB 836847, respectively.

KCI등재

5High-Temperature-Tolerant Fungus and Oomycetes in Korea, Including Saksenaea longicolla sp. nov.

저자 : Bora Nam , Dong-jae Lee , Young-joon Choi

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 476-490 (15 pages)

다운로드

(기관인증 필요)

초록보기

Global temperatures are steadily increasing, leading to significant changes in microbial diversity and ecology. In the present study, we isolated high-temperature-growing fungi and fungi-like group (Oomycota) strains from freshwater environments of Korea and identified them based on cultural, morphological, and multilocus phylogenetic analyses. As a result, we introduce Saksenaea (Fungi) isolates as a new species, Saksenaea longicolla sp. nov. and record Phytophthora chlamydospora and P. lagoariana (Oomycota) new to Korea. In the growth experiments, they exhibited high-temperature tolerance, which can grow at 35-40 ℃ but become inactive at 4 ℃ and below. This study confirms the presence of high-temperature- tolerant fungi and oomycetes in Korea and suggests that the Korean climate conditions are changing in favor of these species. This indicates that climate warming is altering microbial distributions in freshwater environments.

KCI등재

6Optimization of Agrobacterium tumefaciens-Mediated Transformation of Xylaria grammica EL000614, an Endolichenic Fungus Producing Grammicin

저자 : Min-hye Jeong , Jung A. Kim , Seogchan Kang , Eu Ddeum Choi , Youngmin Kim , Yerim Lee , Mi Jin Jeon , Nan Hee Yu , Ae Ran Park , Jin-cheol Kim , Soonok Kim , Sook-young Park

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 491-497 (7 pages)

다운로드

(기관인증 필요)

초록보기

An endolichenic fungus Xylaria grammica EL000614 produces grammicin, a potent nematicidal pyrone derivative that can serve as a new control option for root-knot nematodes. We optimized an Agrobacterium tumefaciens-mediated transformation (ATMT) protocol for X. grammica to support genetic studies. Transformants were successfully generated after co-cultivation of homogenized young mycelia of X. grammica with A. tumefaciens strain AGL-1 carrying a binary vector that contains the bacterial hygromycin B phosphotransferase (hph) gene and the eGFP gene in T-DNA. The resulting transformants were mitotically stable, and PCR analysis showed the integratin of both genes in the genome of transformants. Expression of eGFP was confirmed via fluorescence microscopy. Southern analysis showed that 131 (78.9%) out of 166 transformants contained a single T-DNA insertion. Crucial factors for producing predominantly single T-DNA transformants include 48 h of co-cultivation, pretreatment of A. tumefaciens cells with acetosyringone before co-cultivation, and using freshly prepared mycelia. The established ATMT protocol offers an efficient tool for random insertional mutagenesis and gene transfer in studying the biology and ecology of X. grammica.

KCI등재

7Antifungal Activity of an Endophytic Fungus Aspergillus versicolor DYSJ3 from Aphanamixis grandifolia Blume against Colletotrichum musae

저자 : Xiaoyu Li , Yateng Wu , Zhiqiang Liu

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 498-506 (9 pages)

다운로드

(기관인증 필요)

초록보기

An endophytic fungus strain DYSJ3 was isolated from a stem of Aphanamixis grandifolia Blume, which was identified as Aspergillus versicolor based on the morphological characteristics, internal transcribed spacer (ITS) and calmodulin gene sequences analyses. A. versicolor DYSJ3 exhibited strong antagonistic activity against Colletotrichum musae, C. gloeosporioides and Fusarium oxysporum f. sp. cubense with the inhibition rates of 61.9, 51.2 and 55.3% respectively. The antifungal metabolites mainly existed in the mycelium of A. versicolor DYSJ3, and its mycelial crude extract (CE) had broad-spectrum antifungal activities against plant pathogenic fungi. The CE had a good thermal stability, and the inhibition rate of 100 mg/mL CE against C. musae was above 70.0% after disposing at 120 ℃ for 1 h. Five secondary metabolites were isolated from the CE and identified as averufanin, ergosterol peroxide, versicolorin B, averythrin and sterigmatocystin. Activity evaluation showed versicolorin B exhibited inhibitory effects on the mycelial growth and conidial germination of C. musae, and sterigmatocystin had a weak inhibitory effect on the mycelial growth of C. musae.

KCI등재

8Removal of Manganese and Copper from Aqueous Solution by Yeast Papiliotrema huenov

저자 : Phu Nguyen Van , Hai Thi Hong Truong , Tuan Anh Pham , Tuan Le Cong , Tien Le , Kim Cuc Thi Nguyen

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 507-520 (14 pages)

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Papiliotrema huenov was previously reported to be highly tolerant of a range of extremely toxic heavy metals. This study aimed to identify the potential of P. huenov to remove manganese and copper from aqueous solution. Physical conditions which affect removal of Mn(II) and Cu(II) were determined. Optimal temperature for adsorption of both metal ions was 30 ℃, and optimal pH for maximum uptake of Mn(II) and Cu(II) were 5 and 6, respectively. Under these conditions, living cells of P. huenov accumulated up to 75.58% of 110mg/ L Mn(II) and 70.5% of 128mg/L Cu(II) over 120 h, whereas, the removal efficiency of metal ions by dead cells over 1 h was 60.3% and 56.5%, respectively. These results indicate that living cells are more effective than dead biomass for bioremediation, but that greater time is required. The experimental data extends the potential use of P. huenov in biosorption and bioaccumulation of toxic heavy metals to copper and manganese, two of the most common industrial contaminants.

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9Zygotorulaspora cornina sp. nov. and Zygotorulaspora smilacis sp. nov., Two Novel Ascomycetous Yeast Species Isolated from Plant Flowers and Fruits

저자 : Chorong Ahn , Minkyeong Kim , Changmu Kim

발행기관 : 한국균학회 간행물 : Mycobiology 49권 5호 발행 연도 : 2021 페이지 : pp. 521-526 (6 pages)

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Three isolates belonging to the ascomycetous genus Zygotorulaspora were obtained from the fruits of Cornus officinalis and Smilax china, and flowers of Dendranthema zawadskii var. latilobum in Gongju-si, Korea. Phylogenetic Analyses of the LSU D1/D2 domain and ITS region sequences supported the recognition of two new species: Zygotorulaspora cornina sp. nov. (type strain NIBRFGC000500475 ¼ KACC93346PPP) and Zygotorulaspora smilacis sp. nov. (type strain NIBRFGC000500476 ¼ KACC93347PPP). The two novel species revealed no growth on D-Galactose, unlike the other six species in the genus Zygotorulaspora. They are distinguished from each other by their phylogenetic differences and phenotypic characteristics such as assimilation of xylitol, 5-keto-D-gluconate, and ethanol. All species in the genus Zygotorulaspora including the two novel species have phenotypic traits of genus Zygotorulaspora: asci are persistent, sucrose and raffinose are assimilated, and m-inositol is not required for growth, and they are mainly associated with plants.

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