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Ploidy distribution and DNA content variations of Lonicera caerulea (Caprifoliaceae) in Japan

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Title: Ploidy distribution and DNA content variations of Lonicera caerulea (Caprifoliaceae) in Japan
Authors: Miyashita, Tomomi Browse this author
Araki, Hajime Browse this author →KAKEN DB
Hoshino, Yoichiro Browse this author →KAKEN DB
Keywords: chromosome number
DNA ploidy level
flow cytometry
genome size variation
geographical distribution
Lonicera caerulea
Issue Date: 2011
Publisher: Springer
Journal Title: Journal of Plant Research
Volume: 124
Issue: 1
Start Page: 1
End Page: 9
Publisher DOI: 10.1007/s10265-010-0341-6
PMID: 20422248
Abstract: Ploidy level and geographical distribution were investigated in Japanese Lonicera caerulea L. Flow cytometric analysis revealed the presence of DNA diploid and DNA tetraploid plants in Japan. Chromosome observation confirmed that diploid and tetraploid plants showed 2n = 2x = 18 and 2n = 4x = 36, respectively. The DNA diploid populations were found only in lowland mires, Betsukai, Bekanbeushi, Kushiro and Kiritappu located in eastern Hokkaido. On the other hand, DNA tetraploid populations were distributed in a wide area of Hokkaido, and mainland of Japan. The habitats of DNA tetraploid plants were lowland to alpine region. The DNA content measurement with flow cytometry revealed significant differences in the relative DNA contents among DNA tetraploid populations. The relative DNA content within DNA tetraploid populations varied 1.157-fold at maximum, and might correlate with altitude indicating that DNA contents were smaller as altitude increases. The wide area of distribution in various environments of DNA tetraploid plants suggested the adaptability of the tetraploid plants. Although diploid and tetraploid populations were found, no triploid was detected, indicating crossing difficulty between diploid and tetraploid as confirmed by crossing experiment.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 星野 洋一郎

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