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Showing 1–5 of 5 results
Advanced filters: Author: Miki Akagi Clear advanced filters

  • On the basis of the whole-genome sequences of cultivated and wild hops, this study describes the evolution of sex chromosomes, including degeneration and dosage compensation, and identifies a candidate gene for the X–A balance sex-determination system in these species.

    • Takashi Akagi
    • Tenta Segawa
    • Eiichiro Ono
    Research
    Nature Plants
    Volume: 11, P: 1339-1352

  • This study documents recurrent sex chromosome turnovers in kiwifruit lineages and shows that sexual dimorphism is caused by a pleiotropic effect of a single sex-determining gene, transforming our understanding of the evolution of sex chromosomes and sexual dimorphisms.

    • Takashi Akagi
    • Erika Varkonyi-Gasic
    • Ikuo Kataoka
    Research
    Nature Plants
    Volume: 9, P: 393-402

  • A sex determination gene, FrBy, is identified in the dioecious kiwifruit and demonstrated to maintain male functions across angiosperm species. FrBy and the known female suppressor gene, SyGI, support the evolution of dioecy via the ‘two-mutations’ model.

    • Takashi Akagi
    • Sarah M. Pilkington
    • Ryutaro Tao
    Research
    Nature Plants
    Volume: 5, P: 801-809

  • Porous hydrogels (CNF-PEG hydrogels) for the adsorption of metals from aqueous solutions were prepared from chitosan nanofibers (CNFs) and poly(ethylene glycol) diacrylate (PEGDA). CNF-PEG hydrogels adsorbed both transition metals (e.g., copper) and post-transition metals (e.g., tin). The adsorption capacity was observed to increase with increasing CNF/PEGDA ratio, indicating that the CNFs exhibit synergism between chelation between metals and chitosan, and the enlarged surface area of the porous structure.

    • Sachiko Nitta
    • Miki Akagi
    • Hiroyuki Iwamoto
    Research
    Polymer Journal
    Volume: 51, P: 501-509