Contrasting patterns of DNA variation in natural populations of two related conifers, Cryptomeria japonica and Taxodium distichum : Cupressaceae sensu lato
スポンサーリンク
概要
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We investigated DNA variation within and between two closely related conifers, Cryptomeria japonica and Taxodium distichum, at nuclear loci encoding ferredoxin, glutamyl-tRNA reductase, lycopene beta cyclase, and phosphoribosylanthranilate transferase. Average nucleotide diversity at silent sites was estimated to be 0.0035 (SE 0.0012) in C. japonica and 0.0058 (SE 0.0006) in T. distichum. One population in C. japonica was differentiated from the others but generally there was not much differentiation among populations or varieties within the two species. However, the two species seemed to differ in frequency spectra of DNA polymorphisms. Excesses of intermediate-frequency variants were found in C. japonica, whereas excesses of both rare and high-frequency variants were found in T. distichum, which suggested different histories of population structures in the two species. Deviations from the standard neutral expectations in DNA polymorphisms were found by applications of neutrality tests. The results show that actions of selection to respective loci seem to differ between the two species, indicating differences of interaction among evolutionary factors.
- 日本遺伝学会の論文
- 2006-04-25
著者
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YOSHIMARU Hiroshi
Forestry and Forest Products Research Institute
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Kado Tomoyuki
Department Of Biology Graduate School Of Sciences Kyushu University
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Kado Tomoyuki
Department Of Biology Faculty Of Sciences Kyushu University
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Tsumura Yoshihiko
Forestry And Forest Products Research Institute
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Tsumura Yoshihiko
Department Of Forest Genetics Forestry And Forest Products Research Institute
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Tsumura Yoshihiko
Forestry And Forest Products Res. Inst. Ibaraki Jpn
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津村 義彦
農林水産省林野庁森林総合研究所
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TACHIDA Hidenori
Department of Biological Sciences, Graduate School of Sciences, Kyushu University
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Tsumura Yoshihiko
Tree Genetics Laboratory Department Of Forest Genetics Forestry And Forest Products Research Institu
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USHIO Yutaka
Department of Biology, Faculty of Sciences, Kyushu University
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Ushio Yutaka
Department Of Biology Faculty Of Sciences Kyushu University
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Tsumura Yoshihiko
Genome Analysis Laboratory Department Of Forest Genetics Forestry And Forest Products Research Insti
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Tachida Hidenori
Department Of Biological Sciences Graduate School Of Sciences Kyushu University
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Tsuda Yoshiaki
Department Of Ecology And Genetics Evolutionary Biology Centre Uppsala University
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Tsumura Yoshihiko
Department Of Evolutionary Functional Genomics Evolutionary Biology Centre Uppsala University
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津村 義彦
Forestry And Forest Products Research Institute
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