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Journal Articles

Live-imaging evaluation of the efficacy of elevated CO$$_{2}$$ concentration in a closed cultivation system for the improvement of bioproduction in tomato fruits

Yamazaki, Haruaki*; Suzui, Nobuo; Yin, Y.-G.; Kawachi, Naoki; Ishii, Satomi; Shimada, Hiroaki*; Fujimaki, Shu

Plant Biotechnology, 32(1), p.31 - 37, 2015/04

 Times Cited Count:14 Percentile:52.11(Biotechnology & Applied Microbiology)

Journal Articles

Development of an efficient mutagenesis technique using ion beams; Toward more controlled mutation breeding

Hase, Yoshihiro; Akita, Yusuke; Kitamura, Satoshi; Narumi, Issei; Tanaka, Atsushi

Plant Biotechnology, 29(3), p.193 - 200, 2012/06

 Times Cited Count:21 Percentile:26.43(Biotechnology & Applied Microbiology)

Ion beams have been used as a mutagen to improve the efficiency of plant mutation breeding. Mutation breeding is sometimes perceived as a random process. In this review, we describe our recent progress in developing a more efficient mutagenesis technique using ion beam irradiation combined with sucrose pretreatment or subsequent re-irradiation. To shorten the time required for breeding new cultivars of cyclamen, we identified anthocyanin biosynthesis genes and examined the effectiveness of PCR screening of irradiated deletion-mutant candidates at early growth stages. We believe this research is a step toward more efficient and controlled mutation breeding using ion beams.

Journal Articles

Target mutation breeding of flower color by taking advantage of ion-beam irradiation and genomic information

Tanaka, Atsushi

Plant Biotechnology, 29(3), p.191 - 192, 2012/06

 Times Cited Count:4 Percentile:70.17(Biotechnology & Applied Microbiology)

We launched a project to overcome the randomness of mutation and to develop logical and efficient mutation breeding by taking advantage of both ion-beam irradiation and genomic information. This research was supported by a five-year grant from the Research and Development Program for New Bio-industry Initiatives of the Bio-oriented Technology Research Advancement Institution (BRAIN). To achieve our purpose, we focused on flower-color mutations, because flavonoid biosynthesis is one of the most well-known molecular mechanisms in higher plants. We envisioned four ideal target plants for mutation breeding. These were glittering carnation, red creeping petunia, and blue-purple and crimson fragrant cyclamen. Several new factors that strongly affect flower color were identified from this project: (1) Non-acylation was found in a glittering carnation petal. (2) A loss-of-function mutation in GST (glutathione S-transferase) caused not only a decrease of pigmentation but also a change in flower color in carnation. (3) Carnation flower color was strongly affected by the function of AA5GT (acyl-glucose dependent anthocyanin 5-glucosyltransferase). (4) Delphinidins caused cyclamen flowers to turn red-purple. (5) A decrease in flavonol metabolism caused increased amounts of pigmentation in cyclamen flowers.

Journal Articles

Optimization of ion-beam irradiation for mutagenesis in soybean; Effects on plant growth and production of visibly altered mutants

Arase, Sachiko*; Hase, Yoshihiro; Abe, Jun*; Kasai, Megumi*; Yamada, Tetsuya*; Kitamura, Keisuke*; Narumi, Issei; Tanaka, Atsushi; Kanazawa, Akira*

Plant Biotechnology, 28(3), p.323 - 329, 2011/06

 Times Cited Count:20 Percentile:55.76(Biotechnology & Applied Microbiology)

Journal Articles

Isolation and characterization of suppressors of the ${it early flowering 3}$ in ${it Arabidopsis thaliana}$

Natsui, Yu*; Nefissi, R.*; Miyata, Kana*; Oda, Atsushi*; Hase, Yoshihiro; Nakagawa, Mayu*; Mizoguchi, Tsuyoshi*

Plant Biotechnology, 27(5), p.463 - 468, 2010/12

 Times Cited Count:4 Percentile:15.72(Biotechnology & Applied Microbiology)

EARLY FLOWERING 3 (ELF3) is a circadian clock protein with a major role in maintaining circadian rhythms in plants. In this work, ${it elf3-101}$ was mutagenized by EMS in plants of the Lansberg ${it erecta}$ background to isolate suppressors of ${it elf3}$ and to understand the molecular mechanisms of flowering time controlled by ELF3. Two suppressors, ${it sel106}$ obtained from this screen and ${it sel5}$ from a precious study, were chosen for further analysis. Genetic mapping, gene expression analysis, and sequencing identified ${it sel106}$ and ${it sel5}$ as new alleles of ${it gi}$ and ${it fca}$, respectively. Genetic interactions between ${it elf3}$ and ${it gi}$ and between ${it elf3}$ and ${it fca}$ in the control of the floral activator ${it FLOWERING LOCUS T}$ were also investigated. Six suppressor of ${it elf3}$ were classified at least into four subgroups based on the expression of such floral regulators as GI, CO, FT, SVP, and FLC, and on their flowering times under LL, LD, and SD. This classification scheme is useful for the characterization of unidentified suppressor mutations.

Journal Articles

Efficient induction of flower-color mutants by ion beam irradiation in petunia seedlings treated with high sucrose concentration

Hase, Yoshihiro; Okamura, Masachika*; Takeshita, Daigaku*; Narumi, Issei; Tanaka, Atsushi

Plant Biotechnology, 27(1), p.99 - 103, 2010/03

 Times Cited Count:22 Percentile:56.2(Biotechnology & Applied Microbiology)

Journal Articles

Red-purple flower due to delphinidin 3,5-diglucosides, a novel pigment for ${it Cyclamen}$ spp., generated by ion-beam irradiation

Kondo, Emiko*; Nakayama, Masayoshi*; Kameari, Naoko*; Tanikawa, Natsu*; Morita, Yasumasa*; Akita, Yusuke; Hase, Yoshihiro; Tanaka, Atsushi; Ishizaka, Hiroshi*

Plant Biotechnology, 26(5), p.565 - 569, 2009/01

 Times Cited Count:33 Percentile:68.35(Biotechnology & Applied Microbiology)

Fragrant cyclamen cultivar (${it C. persicum}$ $$times$$ ${it C. purpurascens}$), that bloomed purple flower containing malvidin 3,5-diglucoside as the major anthocyanin, was irradiated with a 320-MeV carbon-ion beam at 0-16 Gy to increase flower color variation by mutation. Some of the M2 plants derived from self-pollination of M1 plants irradiated at 2 Gy were flower-color mutants that retained desirable flower shape, flower size, and leaf color. One of the mutants bloomed novel red-purple flowers, the major anthocyanin of which was delphinidin 3,5-diglucoside. Because the major anthocyanins in flowers of ${it Cyclamen}$ spp. were previously restricted to malvidin, peonidin, and cyanidin types, the generation of a cyclamen containing mostly the delphinidin-type anthocyanin is an important breakthrough in cyclamen breeding. We expect this mutant to become not only a commercial cultivar itself, but also a valuable genetic resource for cyclamen breeding.

Journal Articles

Isolation of novel gain- and loss-of-function alleles of the circadian clock gene ${it LATE ELONGATED HYPOCOTYL}$ (${it LHY}$) in ${it Arabidopsis}$

Oda, Atsushi*; Reeves, P. H.*; Tajima, Takeomi*; Nakagawa, Mayu; Kamada, Hiroshi*; Coupland, G.*; Mizoguchi, Tsuyoshi*

Plant Biotechnology, 24(5), p.457 - 465, 2007/12

 Times Cited Count:2 Percentile:7.56(Biotechnology & Applied Microbiology)

no abstracts in English

Journal Articles

Alteration of resistance to black Sigatoka (${it Mycosphaerella fijiensis}$ Morelet) in banana by ${it in vitro}$ irradiation using carbon ion-beam

Reyes-Borja, W. O.*; Sotomayor, I.*; Garz$'o$n, I.*; Vera, D.*; Cede$~n$o, M.*; Castillo, B.*; Tanaka, Atsushi; Hase, Yoshihiro; Sekozawa, Yoshihiko*; Sugaya, Sumiko*; et al.

Plant Biotechnology, 24(3), p.349 - 353, 2007/06

 Times Cited Count:13 Percentile:34.97(Biotechnology & Applied Microbiology)

Journal Articles

Dance of plants with circadian clock

Niinuma, Kanae*; Nakagawa, Mayu; Calvino, M.*; Mizoguchi, Tsuyoshi*

Plant Biotechnology, 24(1), p.87 - 97, 2007/03

 Times Cited Count:11 Percentile:13.74(Biotechnology & Applied Microbiology)

no abstracts in English

Journal Articles

Natural variation of polyglutamine repeats of a circadian clock gene ${it ELF3}$ in ${it Arabidopsis}$

Tajima, Takeomi*; Oda, Atsushi*; Nakagawa, Mayu; Kamada, Hiroshi*; Mizoguchi, Tsuyoshi*

Plant Biotechnology, 24(2), p.237 - 240, 2007/03

 Times Cited Count:17 Percentile:42.64(Biotechnology & Applied Microbiology)

no abstracts in English

Journal Articles

Advances of mutagenesis in flowers and their industrialization

Okamura, Masachika*; Tanaka, Atsushi; Momose, Masaki*; Umemoto, Naoyuki*; Silva, J.*; Toguri, Toshihiro*

Floriculture, Ornamental and Plant Biotechnology; Advances and Topical Issues, Vol.1, p.619 - 628, 2006/00

no abstracts in English

Journal Articles

Effects of ion beam irradiation on the regeneration and morphology of ${it Ficus thunbergii}$ Maxim

Takahashi, Misa*; Kohama, S.*; Kondo, Komei*; Hakata, Makoto*; Hase, Yoshihiro; Shikazono, Naoya; Tanaka, Atsushi; Morikawa, Hiromichi*

Plant Biotechnology, 22(1), p.63 - 67, 2005/03

no abstracts in English

Journal Articles

${it Potato virus Y}$-resistance in the progeny of haploid mutants obtained by the culture of ${it Nicotiana Tabacum}$ L. Anthers exposed to ion beams

Hamada, Kentaro*; Inoue, Masayoshi*; Tanaka, Atsushi; Watanabe, Hiroshi

Plant Biotechnology, 18(4), p.251 - 257, 2001/04

no abstracts in English

Journal Articles

Ion beam as a noble tool to induce apoptosis-like cell death in roots of maie (zea. mays L.)

Kawai, Maki; Kobayashi, Yasuhiko; Hirata, Aiko*; Ono, Yutaka; Watanabe, Hiroshi; Uchimiya, Hirofumi

Plant Biotechnology, 17(4), p.305 - 308, 2000/12

no abstracts in English

15 (Records 1-15 displayed on this page)
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