Deep fungal infection related to hydrophyte

( Dae Young Oh ),( Ji Seon Kim ),( Hyun Yi Lee ),( Yu Jin Jeon ),( Dae Won Koo ),( Joong Sun Lee ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1

Deep fungal infection, or mycoses of implantation, is infections caused by fungi that have been introduced directly into the dermis or subcutaneous tissue through a penetrating injury. Here, we present deep fungal infection which occurred after the contact with hydrophyte. A 58-year-old man presented with tender purpuric plaques and nodules involving both leg of 2 months in duration. He had a history of contact with hydrophyte on the lower leg during fishing few days before the skin lesion. Histopathologic examination of the lesion on the right leg revealed suppurative granulomatous inflammation with round GMS-positive fungal spores in the deep dermis to subcutaneous area. Skin lesion was gradually improved with antifungal agents (itraconazole) and the symptom has been maintained well with the treatment for 4 months. With growing interest in leisure recently, the incidence of uncommon disease is increasing. Fishing can increase not only the disease caused by the fish, but also the change of contact with hydrophyte and the likelihood of the associated cutaneous diseases. Fungal infection including protothecosis may occur in contact with hydrophyte. Thus, although it is rare, dermatologists should be aware that deep fungal infection caused by the hydrophte may occur during outdoor activity with favorable outcome with antifungal agent and perform biopsy to evaluate other suspected diseases.

주남저수지와 동판저수지의 수생식물에서 분리된 내생균류의 비교 분석

유영현,박종명,한경숙,박종한,김종국,You, Young-Hyun,Park, Jong Myong,Han, Kyung-Sook,Park, Jong-Han,Kim, Jong-Guk 한국균학회 2015 韓國菌學會誌 Vol.43 No.2

대표적인 담수습지인 경상남도 창원시 주남저수지와 동판저수지에서 우점하는 수생식물종인 자라풀 및 생이가래를 채집하였다. 주남저수지의 자생식물 뿌리에서 19균주와 동판저수지의 자생식물 뿌리에서 9균주를 순수분리 하였다. 이들 내생균류들의 internal transcribed spacer (ITS) 영역 염기서열을 분석하여 계통수를 작성한 결과 분리된 28균주는 주남저수지의 경우 11속, 동판저수지의 경우 5속에 속하는 것으로 확인되었으며, 두 습지에서 모두 13속의 내생균류가 분리되었다. 이들 중 담수습지별로 공통적으로 분리된 균주는 Fusarium, Phoma 및Talaromyces속으로 확인되었다. 담수습지 및 식물종별 내생균류의 다양성을 분석하였을 때 각각 상이한 지수를 보였으며, 그들 중 환경생태학적으로 중요한 위치를 차지하는 생이가래가 높은 지수를 나타내었다. Hydrocharis dubia Backer and Salvinia natans All. were sampled from the Junam and Dongpan reservoirs, representative freshwater wetlands of Korea. A total of 19 endophytic fungal strains were isolated from hydrophytes native to the Junam wetlands and 5 strains were isolated from the Dongpan wetlands. Depending on phylogenetic analysis based on internal transcribed spacer (ITS) region, strains from Junam belonged to 11 genera and from Dongpan belonged to 5 genera. Fusarium, Phoma and Talaromyces were commonly distributed genera from two wetlands. The fungal diversity index showed clear differences between each wetlands or each host hydrophyte. Above all, the highest diversity value was observed from Salvinia natans All., which have been reported as promising biological resources as eutrophication controller in environmental ecology.

Removal of nitrate from constructed wetland in winter in high-latitude areas with modified hydrophyte biochars

Bo Wang,Si-yao Liu,Fayun Li,Zhiping Fan 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.3

In high-latitude areas, nitrate treatment from constructed wetlands is often not so good in winter. The study aims to develop an efficient and economic technology to remove nitrate from constructed wetland under the conditions of winter temperature. We conducted laboratory experiments to investigate the removal of nitrate from aqueous solution and wastewater by modified hydrophyte biochars from constructed wetlands. The second-order model fit the nitrate desorption kinetics of modified hydrophyte biochars with a high coefficient of determination (R2>0.99). Freundlich isotherms performed well to fit the nitrate sorption data (R2>0.98) of modified hydrophyte biochars. Batch adsorption experiments also showed that both initial solution pH and coexisting anions could affect the adsorption of nitrate onto modified hydrophyte biochars. Our results suggested that modified hydrophyte biochars might be a promising alternative wastewater treatment technology for nitrate removal from constructed wetland in winter in high-latitude areas.

팔당호 연안생태계의 수생식물상과 생태적 특성

임용석,마선미,나성태,최홍근,신현철 한국육수학회 2005 생태와 환경 Vol.38 No.1

팔당호 연안대의 수생식물상과 식생을 파악하기 위하여 2003년 4월부터 2004년 4월까지 9곳의 조사 지점을 선정하여 선방형구법을 이용하여 조사하였다. 팔당호 연안대에는 128종류의 관속식물이 생육하고 있는 것으로 조사되었고, 이중 수생식물은 38종류였다. 수생식물의 경우 정수식물이 21종류로 가장 많았고, 침수식물은 8종류 였고, 침수식물 종류수는 이전 조사보다 감소한 것으로 파악되었다. 팔당호 주요 식생은 애기부들, 줄, 갈대가 우점하는 정수식물대로 파악되었고, 특히 두물머리, 광동교 근처에 넓게 정수식물대가 넓게 발달하였다. 귀화식물은 11종류가 분포하고 있었으나, 출현 빈도는 상대적으로 높았다. 팔당호 연안대에 분포하는 식물의 출현 빈도를 조사 지점을 기준으로 살펴보면, 조사 지점당 수생식물은 2.7종류, 습생식물은 2.5종류, 육지식물은 1.8종류로 파악 되었고, 수직대상분포 식생이 팔당호 연안대에서 발견되었다. 이러한 조사 결과는 팔당호 연안대가 수생태계의 전형적인 특성들을 지니고 있는 것으로 풀이된다. To investigate the flora and vegetation structure of vascular plants in the littoral zone of Paldang Reservoir, from April, 2003 to April 2004, nine sampling sites were selected. Along the Paldang Reservoir, 128 taxa, consisted of 51 families and 96 genera, were identified, among them, hydrophytes were confirmed as 38 taxa, which was comprised 29.7% to total taxa, whereas hygrophytes were 44 taxa and terrestrial plants were 46 taxa. Emergent hydrophytes consists of 21 taxa, including Phragmites australis and Typha angustifolia, and next, submerged hydrophytes were 8 taxa. However, the kinds and vegetation area of submerged hydorphytes were reduced compared to previous studies. In the littoral zone of Paldang Reservoir, the aquatic vegetation was widely developed near Dumulmori, Yangsuri, and Kwangdong Bridge, downstream of Kyungancheon. The average number of hydrophyte per sampling sites were 2.7 taxa, whereas hygrophytes were 2.5, and land plants were 1.8. In addition, the hydrophytes in the littoral zone of Paldang Reservoir showed the typical vertical zonation pattern like a natural swamp. These results mean that the littoral zone of Paldang Reservoir has the typical characteristics of aquatic plant ecosystem.

정양지의 대형수생식물상과 그 분포에 관한 연구

김인댁,박정원,김형오 7개 국립대학교 환경연구논문집 공동발행 위원회 2005 공업기술연구 Vol.5 No.-

The flora(macro-hydrophyte) and Vegetation of Jeongyang reservoir and surrounding area was investigated from March, 2005 to October, 2005. The Macro-hydrophyte of this area consist of 31 taxa : 1 variety, 30 species, 27 genera and 19 family. The Macro-hydrophyte of this area consist of Emergent Plants : 15 species, 12 genera, 8 family, Submerged Plants : 6 species, 6 genera, 5 family, Free-floating Plants : 3 species, 3 genera, 2 family, Folating leaved Plants : 3 species, 3 genera, 3 family, Hygrophytes Plants : 3 species, 3 genera, 3 family, Terrestrial Plants : 1 species, 1 genera, 1 family. The communities of Jeongyang lake : Miscanthus sacchariflorus community, Echinochloa crus-galli var.frumentacea community, Scirpus triqueter community, Ziaznia latifolia community, Phragmites communis community, Typha orientalis community and persicaria thunbergii community. The life form spectrum : Emergent Plants 48%, Submerged Plants 19%, Free-floating plants 10%, Floating leaved Plants 10%, Hygrophytes Plants 10%, Terrestrial Plants 3%.

박실지의 대형수생식물상과 그 분포에 관한 연구

김인택,정선우,이다정 7개 국립대학교 환경연구논문집 공동발행 위원회 2005 공업기술연구 Vol.5 No.-

The flora(macro-hydrophyte) Vegetation of Baksil reservoir and surrounding area was investigated from March, 2005 to October, 2005. The Macro-hydrophyte of this area consist of 33 taxa : 3 variety, 30 species, 30 genera and 22 family. The Maro-hydrophyte of this area consist of Emergent Plants : 16 species, 14 genera, 11 family, Submerged plants : 4 species, 4 genera, 3 family, Free-floating Plants : 3 species, 3 genera, 2 family, Floating leaved Plants : 2 species, 2 genera, 2 family, Hygrophytes Plants : 5species, 5 genera, 4 family. The communites of Jeongyang lake : Miscanthus Sacchariflorus community, Zizania latifolia community, Phragmites communis community, Tyhpa orientalis community and Trapa japonica community. The life form spectrum : Emergent Plants 49%, Submerged Plants 12%, Free-floating Plants 9%, Floating leaved plants 6%, Hygrophytes plants 15%.

부유부엽성 개구리밥 식물체의 구조분화 연구

김경애,김인선,Kim, Kyoung-Ae,Kim, In-Sun 한국현미경학회 2000 Applied microscopy Vol.30 No.2

미분화된 엽상체 및 연결사와 뿌리로만 구성되어 있는 개구리밥(Spiroela polyrhiza)식물체의 구조분화 양상이 연구되었다. 엽상체는 엽육세포 내에 발달하여 있는 다수의 엽록체와 않은 막으로 구획화된 기실이 잘 발달되어 있어 광합성 및 부유에 중요한 역할을 하고, 측부로 발달하는 연결사에는 기실이 형성되어 있지 많으며 탈리층을 형성하여 모엽상체와 자엽상체를 분리시킨다. 뿌리는 흡수 및 식물체의 중심을 잡는데 중요한 역할을 하며, 근단부위에는 액포화된 근관세포층이 뚜렷히 발달하여 있다. 뿌리의 피층에는 원주형 기실이 형성되어 있으며 피층세포 내에는 잘 발달된 골지체, 미토콘드리아, rER등의 세포소기관들이 치밀하게 분포하였다. 엽상체, 연결사, 뿌리세포에는 엽록체가 발달하며 다수의 원형질 연락사가 분포하였다. 개구리밥은 10mm내외의 매우 축소된 식물체를 구성하나 효율적으로 잘 발달된 구조 분화체계를 이룬다. 이러한 구조는 수표면에 부유하여 빠르게 생장 및 증식하는 작은 식물체 크기와 이들의 괌은 생활환과 밀접한 관계가 있는 것으로 추정된다. Aspects of structural differentiation of the free -floating hydrophyte, Spirodela polyrhira, has been investigated. The hydrophyte exhibited highly reduced structures having only fronds, connective stalks, and roots as a mature plant. The fronds were major photosynthetic and vegetatively reproducing organ during the growth. Daughter fronds which developed early in the mother frond were also chlorenchymatous, but they remained within foliage sheaths of the mother frond before separation from connecting stalks. Although the stalks and roots originated from the same meristematic region of the frond, they exhibited the distinct polarity showing former lateral growth and latter axial growth. Air chambers were formed only in the fronds and roots. Cellular components were scattered throughout the diffuse cytoplasm in most of the actively growing stalk cells. Root cells protected by the root cap demonstrated relatively complex organization, showing dense cytoplasm with Golgi, rER, mitochondria, and chloroplasts in the cortical cells. Cells in the root cap were highly vacuolated within the peripheral cytoplasm. Such reduction and differentiation of the plant body in Spirodela polyrhiza most effectively contributes to the better adaptation of smaller plants to superficial aquatic environments, while also enabling the rapid growth.

낙동강 본류 하변의 식물상에 관한 연구

고재기,조영호 대구한의대학교 기초과학연구소 2003 基礎科學 Vol.7 No.2

본 조사에서 기록된 관속식물은 69 科 174 屬 227 種 40 變種 2 品種으로 총 269 種이 조사되었다. 생활형의 구성은 남한지역 전체와 비교할 때, 지상식물, 지중식물 및 지표식물의 비율이 낮았고, 반지중식물, 1년생식물 및 수생식물의 비율이 현저히 높게 나타났다. 본 조사 지역에서 얻어진 귀화식물은 전체 출현종의 8.55%로써 23종 이 출현하였다. 낙동강 본류의 수생식물은 총 16과 20속 31종 4변종을 총 35종류가 조사되었으며 정수성이 14종(40.0%)으로 가장 많았으며 침수성 11종(31.4%), 부엽성 7종(20.0%), 부유성 3종(8.6%)의 순으로 나타났다. 수생식물의 분포는 대구상류에 16 종, 대구 하류에 26종으로 하류로 갈수록 많이 출현하고 있으며, 침수식물인 검정말 (Hydrilla verticillata)이 우점종으로 관찰되었다. This study was undertaken to describe the riverside flora in 73 plots around the mainstream of Nak-tong River, Korea from March, 1995 to October, 1996. The field survey were carried out through the process of direct collection on actual vegetation and drying, fixation and identification of each specimen. The vascular plants around the mainstream of Nak-tong River were consisted of 269taxa; 69 families, 174 genera, 227 species, 40 varieties, 2 forms. Compared with Raunkiaer's lifeform spectrum, the percent of phanerophyte, geophyte and epiphyte were lower and hemicryptophyte, hydrophyte and therophyte were higher remarkably in spectrum of this riverside flora than spectrum of South Korea. The Korean endemic plants are 5 taxa and naturalized plants are 23 taxa. The percent of species number of naturalized plants around the mainstream of Nak-tong River per total species number of naturalized plants in South Korea is 12.8%. The hydrophytes around the mainstream of Nak-tong River were consisted of 35taxa; 16 families, 20 genera, 31 species, 4 varieties and the composition of hydrophytes by life cycle were 10 emergent hydrophytes, 5 floating-leaved hydrophytes, 13 submerged hydrophytes, 3 free-floating hydrophytes and dominant species in hydrophytes was Hydrilla verticillata And the subsidiary knowledge from this study will provide practical information on the study for biodiversity and habitat conservation.

주남저수지 내 신규 조성된 인공습지의 관속식물상과 생활형

이기숙,전권석,조민기,오기철,문현식 경상대학교 농업생명과학연구원 2013 농업생명과학연구 Vol.47 No.5

The analysis of the ecological characteristics of the vascular plants and life form of artificial wetland at Junam reservoir in Changwon were conducted to provide the basic informations for effective management of inland artificial wetland, with a total 156 taxa, 48 families, 118 genera, 147 species, 1 subspecies, and 8 forms. The specific plants by floristic region were 11 taxa including Euryale ferox, Hydrocharis dubia and Ludwigia ovalis. The naturalized plants were identified as 26 taxa including Rumex crispus, Potentilla amurensis and Galinsoga ciliata, Ambrosia artemisifolia, and their naturalized ratio and urban index were analyzed to be 16.7% and 8.1%, respectively. Compositae plants were dominant containing 13 taxa(50% of the total natularized plants). Therophytes (Th) and Hydrophytes(HH) among 8 life forms showed high percentage and these species comprised 73.8% of the whole flora at artificial wetland in Junam reservoir. Hydrophytes were observed having 48 taxa including Limnophila sessiliflora, Marsilea quadrifolia and Salvinia natans, whereas emergent plants showed the highest percentage. 본 연구는 내륙인공습지의 생태적 특성 분석을 통하여 효율적 운영 및 관리를 위한 기초정보를 제공하고자 주남저수지 인공습지의 관속식물상과 생활형을 조사하였다. 관속식물상은 48과 118속 147종 1아종 8품종의 총 156분류군이 확인되었다. 식물구계학적 특정식물은 가시연꽃, 자라풀, 눈여뀌바늘 등 11분류군이 확인되었다. 귀화식물은 소리쟁이, 좀개소시랑개비, 털별꽃아재비, 돼지풀 등 26분류군이 확인되었으며, 귀화율과 도시화지수는 각각 16.7%와 8.1%였다. 국화과 식물이 전체 귀화식물의 절반을 차지하였다. 생활형 분석 결과, 일년생식물과 수생식물의 비율이 가장 높았으며, 이들 두 생활형이 전체 관속식물상의 73.8%를 차지하였다. 수생식물은 구와말, 네가래, 생이가래 등 48분류군이 출현하였으며, 정수식물의 비율이 가장 높은 것으로 분석되었다.

청주 무심천의 교란에 따른 식생분포의 변화

강상준,곽애경 한국생태학회 1998 Journal of Ecology and Environment Vol.21 No.5

The phytosociological investigation was carried out at 32 sites of the riparian vegetation in Musim-Chon stream passed through Choengju-City, Chungcheongbuk-Province by Braun-Blanquet's method from August to October, 1997. The flora of vascular plants in this survey was 202 species. The riparian vegetation was classified into 25 communities as follows. The submerged hydrophytes are Potomogeton malaianus var. latifolius community, Potomogeton crispus community, Myriophyllum verticillatum community-Hydrilla verticillata community and Ceratophyllum demersum community. The floating-leaved hydrophyte is Trapa japonica community. The emerged hydrophytes are Phragmites communis community, Perzicaria thunbergii community, Phragmites japonica community, Oenanthe javanica community, Zizania latifolia community and Persicaria hydropiper community. The herbaceous vegetation of floodplain are Artemisia montana community, Humulus japonicus community, Miscanthus sacchariflorus community, Erigeron anmus community, Impatiens balsamina community, Bidens frondosa community, Setaria viridis community, Ambrosia artemisiifolia var. elatior community and Eragrostis ferruginea community. The woody vegetation of floodplain are Robinia pseudo-acacia community, Stephanandra incisa community and Clematis apiifolia community. The species diversity was low in the upper and down stream, while the diversity was high in the mid stream situated at the center of Choengju-City because of frequent disturbance by citizens. These results suggested that distribution of communities and species diversity was closely related to the disturbance.