Refine your search:     
Report No.
 - 
Search Results: Records 1-20 displayed on this page of 88

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

${it Arabidopsis sos1}$ mutant in a salt-tolerant accession revealed an importance of salt acclimation ability in plant salt tolerance

Ariga, Hirotake*; Katori, Taku*; Yoshihara, Ryohei*; Hase, Yoshihiro; Nozawa, Shigeki; Narumi, Issei; Iuchi, Satoshi*; Kobayashi, Masatomo*; Tezuka, Kenji*; Sakata, Yoichi*; et al.

Plant Signaling & Behavior (Internet), 8(7), p.e24779_1 - e24779_5, 2013/07

Based on analysis of the salinity tolerance among 354 ${it Arabidopsis thaliana}$ accessions, some accessions showed greater salt shock tolerance compared with a reference accession, Col-0 on a typical assay with drastic change in NaCl concentration from 0 mM to 225 mM. On the other hand, several accessions including Zu-0 exhibited marked acquired salt tolerance, which is induced after exposure to moderate salt stress (salt acclimation ability). It is likely that Arabidopsis plants have at least two types of tolerance abilities, salt shock tolerance and salt acclimation. To dissect the salt tolerance mechanisms of the salt tolerant accessions, we isolated a salt-sensitive mutant from ion beam-mutagenized Zu-0 seedlings. The mutant showed severe growth inhibition under salt shock stress due to a single base deletion in SOS1 gene as well-known salt shock tolerance gene, even more salt sensitive than Col-0. Nevertheless, the mutant was able to survive on the salt acclimation with 100 mM NaCl for 7 days followed with 750 mM sorbitol for 20 days (salt acclimation assay) as well as the Zu-0 wild type, whereas Col-0 showed apparent chlorosis under the condition. We propose that a gene for salt acclimation ability is different from a gene for salt shock tolerance and plays an important role in acquisition for marked salt- or osmotic tolerance.

Journal Articles

Mutational effects of $$gamma$$-rays and carbon ion beams in ${it Arabidopsis}$ seedlings

Yoshihara, Ryohei*; Nozawa, Shigeki; Hase, Yoshihiro; Narumi, Issei; Hidema, Jun*; Sakamoto, Ayako

Journal of Radiation Research, 54(6), p.1050 - 1056, 2013/05

 Times Cited Count:16 Percentile:62.12(Biology)

Journal Articles

Mutational effects of carbon ions near the range end and development of an efficient mutagenesis technique using ion beams

Hase, Yoshihiro; Yoshihara, Ryohei*; Nozawa, Shigeki; Narumi, Issei

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 98, 2013/01

Journal Articles

Effect of carbon ion beam irradiation on callus growth in Arabidopsis and rice

Saika, Hiroaki*; Yoshihara, Ryohei*; Sakamoto, Ayako; Toki, Seiichi*

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 99, 2013/01

Journal Articles

Production of mutants by ion beam irradiation in ${it Dahlia}$ spp.

Uyama, Yoshihide*; Oya, Hirotaka*; Amano, Yoshinori*; Kashimoto, Koichi*; Hatano, Shoji*; Nozawa, Shigeki; Yoshihara, Ryohei*; Hase, Yoshihiro; Narumi, Issei

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 102, 2013/01

Journal Articles

Mutagenic effects of carbon ions near the range end in plants

Hase, Yoshihiro; Yoshihara, Ryohei; Nozawa, Shigeki; Narumi, Issei

Mutation Research; Fundamental and Molecular Mechanisms of Mutagenesis, 731(1-2), p.41 - 47, 2012/03

 Times Cited Count:26 Percentile:70.09(Biotechnology & Applied Microbiology)

To gain insight into the mutagenic effects of accelerated heavy ions in plants, the mutagenic effects of carbon ions near the range end (mean LET: 425 keV/$$mu$$m) were compared with the effects of carbon ions penetrating the seeds (mean LET: 113 keV/$$mu$$m). Mutational analysis by plasmid rescue of ${it E. coli rpsL}$ from irradiated Arabidopsis plants showed a 2.7-fold increase in mutant frequency for 113 keV/$$mu$$m carbon ions, whereas no enhancement of mutant frequency was observed for carbon ions near the range end. This suggested that carbon ions near the range end induced mutations that were not recovered by plasmid rescue. An Arabidopsis DNA ligase IV mutant, deficient in non-homologous end-joining repair, showed hyper-sensitivity to both types of carbon-ion irradiation. The difference in radiation sensitivity between the wild type and the repair-deficient mutant was greatly diminished for carbon ions near the range end, suggesting that these ions induce irreparable DNA damage. Mutational analysis of the Arabidopsis ${it GL1}$ locus showed that while the frequency of generation of glabrous mutant sectors was not different between the two types of carbon-ion irradiation, large deletions ($$>$$$$sim$$30 kb) were six times more frequently induced by carbon ions near the range end. This suggests that the proportion of large deletions increases with LET in plants.

Journal Articles

Mutational effects of carbon ions near range end in Arabidopsis

Hase, Yoshihiro; Yoshihara, Ryohei; Nozawa, Shigeki; Narumi, Issei

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 103, 2012/01

Journal Articles

Mutational effect of $$gamma$$-rays and carbon ion beams on ${it Arabidopsis}$ seedlings

Yoshihara, Ryohei; Hase, Yoshihiro; Nozawa, Shigeki; Sakamoto, Ayako; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 59, 2011/01

Journal Articles

Generation new ornamental plant varieties using ion beams

Affrida, A. H.*; Zaiton, A.*; Salahbiah, A. M.*; Shakinah, S.*; Yoshihara, Ryohei; Narumi, Issei; Hase, Yoshihiro; Ono, Yutaka

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 62, 2011/01

Journal Articles

Development of new Gunma original variety of chrysanthemum by ion beam irradiation

Okada, Tomoyuki*; Ikeda, Hiroshi*; Ono, Yutaka; Yoshihara, Ryohei; Hase, Yoshihiro; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 63, 2011/01

no abstracts in English

Journal Articles

Effects of heavy ion beam irradiation in citrus

Matsuo, Yoichi*; Hase, Yoshihiro; Nozawa, Shigeki; Yoshihara, Ryohei; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 66, 2011/01

no abstracts in English

Journal Articles

Producing new gene resources in chrysanthemum using ion-beam irradiation

Asami, Itsuo*; Tsuji, Takako*; Hasegawa, Toru*; Fukuta, Shiro*; Kuroyanagi, Satoru*; Hase, Yoshihiro; Yoshihara, Ryohei; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 68, 2011/01

no abstracts in English

Journal Articles

Induction of Fusarium wilt resistant by ion beam irradiation in strawberry (${it Fragaria}$ $$times$$ ${it ananassa}$) leaf explants

Yotoriyama, Mamoru*; Takano, Junichi*; Namai, Kiyoshi*; Yoshihara, Ryohei; Nozawa, Shigeki; Hase, Yoshihiro; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 71, 2011/01

no abstracts in English

Journal Articles

Assessment of irradiation treatments on a salt-tolerant Arabidopsis, Zu-0 and ${it Thellungiella}$

Taji, Teruaki*; Horiguchi, Akane*; Ikeda, Akiro*; Nakajima, Chihiro*; Sakata, Yoichi*; Yoshihara, Ryohei; Nozawa, Shigeki; Hase, Yoshihiro; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 72, 2011/01

no abstracts in English

Journal Articles

Effects of ion-beam irradiation on germination and growth of seedlings of red pepper "Hirosaki zairai"

Tomikawa, Masaru*; Maeda, Tomoo*; Honda, Kazushige*; Saga, Koichi*; Ishikawa, Ryuji*; Akita, Yusuke; Yoshihara, Ryohei; Nozawa, Shigeki; Narumi, Issei

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 73, 2011/01

Journal Articles

Effect of different LET radiations on root growth of ${it Arabidopsis thaliana}$

Yoshihara, Ryohei; Nozawa, Shigeki; Saika, Hiroaki*; Teranishi, Mika*; Toki, Seiichi*; Hidema, Jun*; Sakamoto, Ayako

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 74, 2011/01

Journal Articles

Mutational effects of different LET radiations in ${it rpsL}$ transgenic ${it Arabidopsis}$

Yoshihara, Ryohei; Hase, Yoshihiro; Sato, Ryohei*; Takimoto, Koichi*; Narumi, Issei

International Journal of Radiation Biology, 86(2), p.125 - 131, 2010/02

 Times Cited Count:18 Percentile:79.59(Biology)

In an effort to assess the characteristics of mutation induced by different LET radiation in higher plants, the mutational effects of carbon-ion beams and $$gamma$$-rays were investigated in ${it Arabidopsis}$. The ${it rpsL}$ transgenic ${it Arabidopsis}$ (Arabidopsis/rpsL) mutation detection system was adopted. Dry seeds of Arabidopsis/rpsL were irradiated with $$gamma$$-rays and 208-MeV carbon ions (208-MeV $$^{12}$$C$$^{5}$$), and the mutation frequency and mutation spectrum were examined. Our result suggested that 208-MeV $$^{12}$$C$$^{5}$$ and $$gamma$$-rays induced different mutational effects in ${it Arabidopsis}$ dry seed.

Journal Articles

Mutation spectrum induced by $$gamma$$-rays and carbon ion beams in plant

Yoshihara, Ryohei; Hase, Yoshihiro; Nozawa, Shigeki; Narumi, Issei

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 67, 2009/12

Journal Articles

Generating new ornamental plant varieties using ion beams

Affrida, A. H.*; Shakinah, S.*; Zaiton, A.*; Yoshihara, Ryohei; Narumi, Issei; Hase, Yoshihiro; Ono, Yutaka

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 70, 2009/12

Journal Articles

Mutation induction in Lavandin; Plant regeneration from $$^{12}$$C$$^{6+}$$ beam irradiated-lateral meristems and -isolated cultured cells

Tsuro, Masato*; Inazawa, Marie*; Nozawa, Shigeki; Yoshihara, Ryohei; Hase, Yoshihiro; Narumi, Issei

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 71, 2009/12

no abstracts in English

88 (Records 1-20 displayed on this page)