식물분류학회지 (Korean Journal of Plant Taxonomy)

  • 제48권3호
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  • Pages.163-171
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  • 2018
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  • 1225-8318(pISSN)
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  • 2466-1546(eISSN)
한국식물분류학회 (The Korean Society of Plant Taxonomists)
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한국산 금털고사리속의 계통분류학적 연구

Phylogenetic study of the fern genus Hypodematium (Hypodematiaceae), focusing on Korean native taxa

  • 이창숙 (이화여자대학교사범대학과학교육과) ;
  • 이강협 (국립수목원) ;
  • 여성희 (이화여자대학교사범대학과학교육과) ;
  • 정경숙 (중원대학교 융합과학기술대학제약공학과)
  • 투고 : 2018.06.28
  • 심사 : 2018.09.19
  • 발행 : 2018.09.30
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초록

한국산 금털고사리속(Hypodematium)은 오랫동안 금털고사리(H. glanduloso-pilosum) 1종으로 알려져 왔으나 최근 미기록종 흰금털고사리(H. squamuloso-pilosum)가 영월에서 그리고 신종 가는잎금털고사리(H. angustifolium)가 옥천에서 보고되었다. 금털고사리속 내 종을 구분하는 형질은 흔히 잎몸의 세열 정도, 털과 샘털의 유무, 잎자루 기부에 비늘조각의 모양 등으로 보고되어 있다. 제주도를 제외한 전국에서 석회암지대나 바위틈에 자생하는 금털고사리는 잎의 세열 정도, 포자낭군과 포막의 위치, 털의 분포와 크기 등에 큰 변이를 나타낸다. 이러한 변이는 금털고사리를 속 내 다른 분류군과 구분하는 데 어려움을 초래하고 있다. 따라서 국내 전국적으로 분포하는 금털고사리와 근연종의 형태학적 형질 및 분자적 분석(rbcL and psbA-trnH)을 통하여 금털고사리속 식물의 분류학적 및 계통분류학적 관계를 검토하고자 하였다. 그 결과 형태 형질 변이의 폭이 커서 전국적으로 조사했던 금털고사리는 잎자루와 포막의 다세포성 털과 막대모양의 선모를 밀집하는 형질과 땅속줄기와 잎자루 기부 비늘조각의 형태가 피침형 또는 긴타원상 피침형인 특성으로 가는잎금털고사리 또는 흰금털고사리와 뚜렷이 구별되었다. 두 구간의 cpDNA 염기서열 데이터 분석결과에서는 한국 자생 3종을 Glanduloso-pilosum clade로 묶였다. 아울러 중국과 한국에 분포하는 흰금털고사리, 한국에 분포하는 가는잎금털고사리, 그 외 중국과 일본에 분포하는 H. fordii 는 중국, 한국, 일본에 분포하는 그룹에 묶였다.

In Korea, Hypodematium glanduloso-pilosum was formerly known as the only Korean native species in the genus. Recently, however, we reported one unrecorded taxon, H. squamuloso-pilosum Ching, which was found on rocks at a limestone mountain in Yeongwol, along with one new taxon, H. angustifolium in Okcheon. Traditionally, Hypodematium taxa are often distinguished from each other by vegetative characters such as pinnatifid lamina, glandular hairs, and narrower or linear lanceolate scales on stipe bases. H. glanduloso-pilosum, distributed widely throughout the country except on Jejudo Island in Korea, exhibiting variations in leaf segregation, indusia positions, hair distributions and size. The high variation in the morphological characters in the widely distributed taxon has caused problems delimitating three native species from each other. To evaluate the phylogenetic relationships among H. glanduloso-pilosum and taxa related to Hypodematium (all Korean native taxa), we carried out morphological and molecular analyses (cpDNA rbcL and psbA-trnH) of populations of the genus Hypodematium in Korea. Although H. glanduloso-pilosum exhibits high variations in some morphological characters, the species is characterized by stipes and indusia with densely multicellular hairs and rod-shaped glandular hairs or hairs and lanceolate or oblong lanceolate scales in rhizomes and stipe bases distinguished from those of other Korean native taxa (H. squamuloso-pilosum and H. angustifolium). In the analyses of cpDNA data, three Korean native taxa are placed in the same clade, i.e., in the glanduloso-pilosum group. Moreover, our analyses propose that H. squamuloso-pilosum (China and Korea), H. angustifolium (Korea), and H. fordii (China and Japan) share the same glanduloso-pilosum clade with H. glandulosopilosum (China, Korea, and Japan).

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피인용 문헌

  1. 경상누층군 자암산의 관속식물상 vol.37, pp.3, 2018, https://doi.org/10.11626/kjeb.2019.37.3.229
  2. Phylogeny, biogeography, and character evolution in the fern family Hypodematiaceae vol.166, pp.None, 2018, https://doi.org/10.1016/j.ympev.2021.107340