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

https://doi.org/10.4161/psb.24779

Based on analysis of the salinity tolerance among 354 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.

YgjD and YeaZ are involved in the repair of DNA cross-links

Onodera, Takefumi; Sato, Katsuya; Ota, Toshihiro*; Narumi, Issei

Extremophiles, 17(1), p.171 - 179, 2013/01

https://doi.org/10.1007/s00792-012-0506-4

Ion beam irradiation on rice seeds for the Mutation Breeding Project of the Forum of Nuclear Cooperation in Asia (FNCA)

Tanaka, Atsushi; Nozawa, Shigeki; Hase, Yoshihiro; Narumi, Issei; Ishikawa, Hidetaka*; Koike, Aki*

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 96, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

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

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

Effect of ray irradiation on L.

Kitano, Sayaka*; Miyagi, Atsuko*; Ono, Yutaka; Hase, Yoshihiro; Narumi, Issei; Uchimiya, Hirofumi*; Kawai, Maki*

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 101, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

Analysis of mutant frequencies for different LET radiations in

Sato, Katsuya; Tejima, Kohei*; Onodera, Takefumi; Narumi, Issei

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 103, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

DNA damage evaluation system of the high-LET ion beam using the polymerase chain reaction

Matsuo, Yoichiro*; Izumi, Yoshinobu*; Hase, Yoshihiro; Sakamoto, Ayako; Nozawa, Shigeki; Narumi, Issei; Shimizu, Kikuo*

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 105, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

Phenotypic characterization of high temperature tolerant mutants of USDA110 generated by ion-beam irradiation

Takeda, Kiyoko; Tejima, Kohei*; Sato, Katsuya; Narumi, Issei; Yokoyama, Tadashi*

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 107, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

Benomyl-tolerant mutation of entomopathogenic fungi induced by carbon ion beams

Saito, Tsutomu*; Shinohara, Shinobu*; Sato, Katsuya; Narumi, Issei

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 109, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

Effects of ion beam radiation on genome integrity in

Nunoshiba, Tatsuo*; Hirasawa, Yukei*; Yamauchi, Ayako*; Sato, Katsuya; Tejima, Kohei*; Onodera, Takefumi; Narumi, Issei

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 111, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf