胡颓子×maritima与E.×submacrophylla杂交的形态学和分子多态性分析与评价

IF 0.8 Q4 PLANT SCIENCES
Young-Jong Jang, D. Son, Kang-Hyup Lee, Jung-Hyun Lee, Boem Kyun Park
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引用次数: 0

摘要

韩国Elaeagnus ×maritima和E. ×submacrophylla (Elaeagnus科)的分类身份尚不清楚,但根据其形态推定为杂交分类群。为了确定它们的杂交来源,我们进行了形态学分析(实地调查和标本检查)和分子分析,包括两个核糖体DNA (nrDNA)区域(内转录间隔区和5S非转录间隔区)和一个叶绿体DNA (cpDNA)区域(matK)。形态分析表明,×maritima与光棘棘具有一定的形态相似性,×submacrophylla与刺棘棘具有一定的形态相似性。然而,分子分析表明,E. ×maritima在nrDNA区域表现出光叶E.和巨叶E.的附加种特异性位点。值得注意的是,E. ×submacrophylla表现出多种多样的特征,有些个体在nrDNA和cpDNA区域中显示了刺槐和巨叶刺槐的加性种特异位点,有些个体在nrDNA和cpDNA区域显示了刺槐和巨叶刺槐的序列,有些个体在nrDNA和cpDNA区域同时显示了刺槐和巨叶刺槐的序列,尽管它们的形态介于刺槐和巨叶刺槐之间。这些结果表明,这两个物种是杂交起源,经常在亲本和杂交个体之间杂交。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis and evaluation of morphological and molecular polymorphism in the hybridization of Elaeagnus ×maritima and E. ×submacrophylla
The taxonomic identity of Elaeagnus ×maritima and E. ×submacrophylla (Elaeagnaceae) in Korea is unclear, yet they are presumed to be hybrid taxa based on their morphology. To determine their hybrid origins, a morphological analysis (field surveys and specimen examinations) and a molecular analysis involving two nuclear ribosomal DNA (nrDNA) regions (internal transcribed spacer and 5S non-transcribed spacer) and one chloroplast DNA (cpDNA) region (matK) were conducted. The morphological analysis revealed that E. ×maritima showed certain morphological similarities to E. glabra, whereas E. ×submacrophylla showed certain morphological similarities to E. pungens. However, the molecular analysis indicated that E. ×maritima exhibited additive species-specific sites of E. glabra and E. macrophylla in the nrDNA regions. Notably, E. ×submacrophylla showed various aspects, with some individuals exhibiting additive species-specific sites of E. pungens and E. macrophylla in the nrDNA and E. macrophylla sequences in the cpDNA regions, some individuals exhibiting E. macrophylla sequences in the nrDNA and E. pungens sequences in the cpDNA regions, and some individuals displaying E. macrophylla sequences in both the nrDNA and cpDNA regions, despite an intermediate morphology between E. pungens and E. macrophylla. These results indicate that these two species are of hybrid origin and frequently cross between parental and hybrid individuals.
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来源期刊
KOREAN JOURNAL OF PLANT TAXONOMY
KOREAN JOURNAL OF PLANT TAXONOMY Agricultural and Biological Sciences-Plant Science
CiteScore
1.50
自引率
40.00%
发文量
23
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