식물분류학회지 (Korean Journal of Plant Taxonomy)

  • 제43권4호
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  • Pages.267-273
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  • 2013
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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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ISSR 분석으로 살펴본 애기등의 유전적 다양성

Genetic diversity of Millettia japonica in Korea as revealed by ISSR analysis

  • 투고 : 2013.11.07
  • 심사 : 2013.11.29
  • 발행 : 2013.12.30
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초록

최근 환경부 멸종위기종 급에서 해제된 애기등(Millettia japonica) 집단의 유전적 다양성 분석을 위해 10개 집단(한국 9집단, 일본 1집단) 189개체에 대한 ISSR (Inter-Simple-Sequence-Repeat) 분석을 수행하였다. 조사된 애기등의 유전적 다양성은 같은 과내의 멸종위기종보다 더 높은 것으로 조사되었다(Shannon's information index: I = 0.2689). 집단별 유전적 다양성은 전북 고창(I = 0.2968) 집단과 경남 남해(I = 0.2951), 경북 토함산(I = 0.2823) 집단이 높았으며, 일본 큐슈(I = 0.2487) 집단이 가장 낮았다. 애기등 10개 집단이 공유하는 유전변이의 양은 전체 유전변이의 86.49%로 나타났고, 전체의 13.51%가 집단간 유전적 차이에 의한 것으로 나타났다. 또한 조사된 애기등 집단간 교류를 나타내는 Nm 값(1.8446)이 비교적 높은 것으로 나타났으며, 이에 따라 집단간 유전적 분화가 크게 일어나지 않았음을 알 수 있었다. 본 연구 결과 애기등의 유전자원 보존을 위해서는 유전다양도가 높은 집단을 중심으로 지속적인 자생지 모니터링이 요구되며, 현지외 보존을 위해서는 더 높은 유전적 다양도를 지닌 전북 고창, 경남 남해, 경북 토함산 집단에서 다수 개체를 선발하는 보존 전략이 적절할 것으로 판단된다.

This study employed inter-simple-sequence repeat (ISSR) to assess genetic variation among 189 individuals representing 10 populations (nine in Korea and one in Japan) of Millettia japonica, which has recently been lifted from the endangered species of Korea. The calculated Shannon's information index value (I = 0.2689) of the species was appreciable and was higher than other endangered leguminous woody taxa. Gochang (I = 0.2968), Namhae (I = 0.2951), and Mt. Toham (I = 0.2823) populations showed relatively high genetic diversity, whereas the Kyushu (in Japan) population (I = 0.2487) exhibited the lowest. The results of an analysis of molecular variance indicated that 86.49% of the diversity was attributed to within populations, and 13.51% to differences among populations, suggesting that M. japonica populations do not have significant geographic differentiation and that the gene flow between populations exists to some extent (Nm = 1.8446). Continuous habitat monitoring should be conducted to conserve genetic diversity of M. japonica, particularly for those populations with relatively high genetic diversity. Selection of many individuals from the populations in Gochang, Namhae, and Mt. Toham is thought to be an appropriate strategy for ex situ conservation of M. japonica in Korea.

키워드

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  1. WISTERIA JAPONICA: KAEMPFER'S JAMA FUJI vol.32, pp.3-4, 2015, https://doi.org/10.1111/curt.12116
  2. The Callerya Group redefined and Tribe Wisterieae (Fabaceae) emended based on morphology and data from nuclear and chloroplast DNA sequences vol.125, pp.None, 2019, https://doi.org/10.3897/phytokeys.125.34877
  3. 경주국립공원 특별보호구역의 식생 특성 분석 - 애기송이풀, 애기등, 복주머니란 개체군을 대상으로 - vol.23, pp.3, 2013, https://doi.org/10.13087/kosert.2020.23.3.45