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Journal Articles

Comparative analysis of floral pigmentation between wild-type and white-flowered varieties of ${it Cyclamen graecum}$

Akita, Yusuke; Ishizaka, Hiroshi*; Nakayama, Masayoshi*; Shimada, Akihiko; Kitamura, Satoshi; Hase, Yoshihiro; Narumi, Issei; Tanaka, Atsushi

Journal of Horticultural Science & Biotechnology, 85(5), p.437 - 443, 2010/09

The flower colour of ${it Cyclamen graecum}$ gra6 (wild-type) is pink-purple in the flower. On the other hand, flowers of ${it C. graecum}$ gra50 (white-flowered variant) exhibit a white colour in its flower. In this study, the relationship between floral pigmentation and expression of several anthocyanin biosynthesis genes was investigated in ${it C. graecum}$ gra6 and gra50. The pigments in the flower consist mainly of malvidin 3,5-diglucoside in gra6. White-flowered ${it C. graecum}$ gra50 possessed lower amounts of anthocyanins, but higher amounts of flavonols compared to gra6. Gene expression analysis demonstrated that expression of the dihydroflavonol 4-reductase gene 2 (${it CgraDFR2}$) was lower in gra50 compared with gra6, whereas the expression of other key genes did not differ greatly. These results suggest that the white-flowered variant of gra50 may result from a defect in expression of the ${it CgraDFR2}$ gene.

Journal Articles

${it Deinococcus aetherius}$ sp. nov., isolated from the stratosphere

Yang, Y.*; Ito, Takashi*; Yokobori, Shinichi*; Shimada, Haruo*; Itahashi, Shiho*; Sato, Katsuya; Oba, Hirofumi*; Narumi, Issei; Yamagishi, Akihiko*

International Journal of Systematic and Evolutionary Microbiology, 60, p.776 - 779, 2010/04

 Times Cited Count:24 Percentile:45.71(Microbiology)

Journal Articles

${it Deinococcus aerius}$ sp. nov., isolated from the high atmosphere

Yang, Y.*; Ito, Takashi*; Yokobori, Shinichi*; Itahashi, Shiho*; Shimada, Haruo*; Sato, Katsuya; Oba, Hirofumi; Narumi, Issei; Yamagishi, Akihiko*

International Journal of Systematic and Evolutionary Microbiology, 59, p.1862 - 1866, 2009/00

 Times Cited Count:28 Percentile:41.02(Microbiology)

An orange pigmented, non-motile, coccoid bacterial strain, TR0125, was isolated from dust samples collected in the high atmosphere above Japan. Phylogenetic analysis based on 16S rRNA gene sequences showed that it was within the radiation of ${it Deinococcus}$ species. Major peptidoglycan amino acids were D-glutamic acid, glycine, D-alanine, L-alanine and ornithine. Predominant fatty acids were 17:0 iso, iso 17:1 $$omega$$ 9c and 15:0 iso. Strong resistance to desiccation, UV-C and $$gamma$$-radiation, high DNA G+C content also supported the affiliation of strain TR0125$$^{T}$$ to the genus ${it Deinococcus}$. TR0125$$^{T}$$ had a highest similarity value (95.7 %) of the 16S rRNA gene sequence to the type strain of the species ${it D. apachensis}$, and phylogenetic analysis shows that it was further separated from ${it D. apachensis}$ than from ${it D. geothermalis}$, indicating that strain TR0125$$^{T}$$ was not a member of these two ${it Deinococcus}$ species. Besides, there were phenotypic differences between strain TR0125$$^{T}$$ and type strains of the two species. Therefore, we propose a new species of the genus ${it Deinococcus}$, ${it Deinococcus aerius}$ sp. nov. (type strain, TR0125$$^{T}$$ = JCM 11750$$^{T}$$ = DSM 21212$$^{T}$$), to accommodate this isolate.

Journal Articles

Roll wave effects on annular condensing heat transfer in horizontal PCCS condenser tube

Kondo, Masaya; Nakamura, Hideo; Anoda, Yoshinari; Saishu, Sadanori*; Obata, Hiroyuki*; Shimada, Rumi*; Kawamura, Shinichi*

Proceedings of 10th International Conference on Nuclear Engineering (ICONE 10) (CD-ROM), 9 Pages, 2002/00

no abstracts in English

Journal Articles

Multi-dimensional thermal-hydraulic analysis for horizontal type PCCS

Arai, Kenji*; Kurita, Tomohisa*; Nakamaru, Mikihide*; Fujiki, Yasunobu*; Nakamura, Hideo; Kondo, Masaya; Obata, Hiroyuki*; Shimada, Rumi*; Yamaguchi, Ken*

Proceedings of 10th International Conference on Nuclear Engineering (ICONE 10) (CD-ROM), 7 Pages, 2002/00

no abstracts in English

Oral presentation

Comparative analysis of floral pigmentation between Cyclamen graecum and its colorless mutant

Akita, Yusuke; Ishizaka, Hiroshi*; Shimada, Akihiko; Nakayama, Masayoshi*; Kitamura, Satoshi; Hase, Yoshihiro; Tanaka, Atsushi; Narumi, Issei

no journal, , 

no abstracts in English

Oral presentation

Comparative analysis of flavonoid biosynthesis genes between ${it Cyclamen graecum}$ and its white-flowered mutant

Akita, Yusuke; Ishizaka, Hiroshi*; Nakayama, Masayoshi*; Shimada, Akihiko; Kitamura, Satoshi; Hase, Yoshihiro; Tanaka, Atsushi; Narumi, Issei

no journal, , 

Oral presentation

Quest for microorganisms existing at high atmosphere and space

Yokobori, Shinichi*; Yang, Y.*; Sugino, Tomohiro*; Kawaguchi, Yuko*; Itahashi, Shiho*; Fujisaki, Kenta*; Fushimi, Hidehiko*; Hasegawa, Sunao*; Hashimoto, Hirofumi*; Hayashi, Nobuhiro*; et al.

no journal, , 

Oral presentation

Gene disruption analysis of the ${it pprA}$ gene in the radioresistant bacterium ${it Deinococcus geothermalis}$

Shimada, Gaku*; Sato, Katsuya; Narumi, Issey*

no journal, , 

no abstracts in English

Oral presentation

${it Deinococcus geothermalis}$ that exhibits moderate thermophilicity and extreme radioresistance

Shimada, Gaku*; Sato, Katsuya; Narumi, Issey*

no journal, , 

no abstracts in English

10 (Records 1-10 displayed on this page)
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