In:
Korean Journal of Plant Taxonomy, The Korean Society of Plant Taxonomists, Vol. 53, No. 2 ( 2023-06-30), p. 126-147
Abstract:
The taxonomic identity of 〈 i 〉 Elaeagnus ×maritima 〈 /i 〉 and 〈 i 〉 E. ×submacrophylla 〈 /i 〉 (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 ( 〈 i 〉 matK 〈 /i 〉 ) were conducted. The morphological analysis revealed that 〈 i 〉 E. ×maritima 〈 /i 〉 showed certain morphological similarities to 〈 i 〉 E. glabra 〈 /i 〉 , whereas 〈 i 〉 E. ×submacrophylla 〈 /i 〉 showed certain morphological similarities to 〈 i 〉 E. pungens 〈 /i 〉 . However, the molecular analysis indicated that 〈 i 〉 E. ×maritima 〈 /i 〉 exhibited additive species-specific sites of 〈 i 〉 E. glabra 〈 /i 〉 and 〈 i 〉 E. macrophylla 〈 /i 〉 in the nrDNA regions. Notably, 〈 i 〉 E. ×submacrophylla 〈 /i 〉 showed various aspects, with some individuals exhibiting additive species-specific sites of 〈 i 〉 E. pungens 〈 /i 〉 and 〈 i 〉 E. macrophylla 〈 /i 〉 in the nrDNA and 〈 i 〉 E. macrophylla 〈 /i 〉 sequences in the cpDNA regions, some individuals exhibiting 〈 i 〉 E. macrophylla 〈 /i 〉 sequences in the nrDNA and 〈 i 〉 E. pungens 〈 /i 〉 sequences in the cpDNA regions, and some individuals displaying 〈 i 〉 E. macrophylla 〈 /i 〉 sequences in both the nrDNA and cpDNA regions, despite an intermediate morphology between 〈 i 〉 E. pungens 〈 /i 〉 and 〈 i 〉 E. macrophylla 〈 /i 〉 . These results indicate that these two species are of hybrid origin and frequently cross between parental and hybrid individuals.
Type of Medium:
Online Resource
ISSN:
1225-8318
,
2466-1546
DOI:
10.11110/kjpt.2023.53.2.126
Language:
English
Publisher:
The Korean Society of Plant Taxonomists
Publication Date:
2023
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