Breeding of a promising isogenic line of rice (Oryza sativa L.) variety ‘Koshihikari’ with low cadmium and brown spot (Bipolaris oryzae) resistance

Ritsuko Mizobuchi; Satomi Ohashi; Kengo Matsumoto; Yuya Ota; Tomohiro Yamakawa; Tadashi Abe; Satoru Ishikawa; Shinnosuke Ohmori; Yoshinobu Takeuchi; Akitoshi Goto; Kei Matsushita; Tomohito Ikegaya; Sayaka Kon; Nobuhiro Suzuki; Chikako Tsuiki; Utako Yamanouchi; Tsuyu Ando; Hiroyuki Sato

doi:10.1270/jsbbs.24027

Note

Breeding of a promising isogenic line of rice (Oryza sativa L.) variety ‘Koshihikari’ with low cadmium and brown spot (Bipolaris oryzae) resistance

Ritsuko Mizobuchi , Satomi Ohashi, Kengo Matsumoto, Yuya Ota, Tomohiro Yamakawa, Tadashi Abe, Satoru Ishikawa, Shinnosuke Ohmori, Yoshinobu Takeuchi, Akitoshi Goto, Kei Matsushita, Tomohito Ikegaya, Sayaka Kon, Nobuhiro Suzuki, Chikako Tsuiki, Utako Yamanouchi, Tsuyu Ando, Hiroyuki Sato

Author information

Ritsuko Mizobuchi Corresponding author
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Satomi Ohashi
Mie Prefecture Agricultural Research Institute
Kengo Matsumoto
Mie Prefecture Agricultural Research Institute
Yuya Ota
Mie Prefecture Agricultural Research Institute
Tomohiro Yamakawa
Mie Prefecture Agricultural Research Institute
Present address: Mie Prefecture Department of Agriculture, Forestry and Fisheries
Tadashi Abe
Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization, NARO
Satoru Ishikawa
Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization, NARO
Shinnosuke Ohmori
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Yoshinobu Takeuchi
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Akitoshi Goto
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Kei Matsushita
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Tomohito Ikegaya
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Sayaka Kon
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Present address: Institute of Vegetable and Floriculture Science, National Agriculture and Food Research Organization, NARO
Nobuhiro Suzuki
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Chikako Tsuiki
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Utako Yamanouchi
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Tsuyu Ando
Institute of Crop Science, National Agriculture and Food Research Organization, NARO
Hiroyuki Sato Corresponding author
Institute of Crop Science, National Agriculture and Food Research Organization, NARO

Keywords: Oryza sativa L., disease resistance, brown spot, bsr1, isogenic line, low cadmium, osnramp5-2

JOURNAL OPEN ACCESS FULL-TEXT HTML
Supplementary material

2024 Volume 74 Issue 5 Pages 462-467

DOI https://doi.org/10.1270/jsbbs.24027

Browse “Advance online publication” version

Details

Abstract

The OsNRAMP5-deficient rice (Oryza sativa L.) mutant (osnramp5-2), with a low grain cadmium (Cd) content, was registered as ‘Koshihikari Kan No. 1’ in Japan. Its agronomic traits are almost identical to those of ‘Koshihikari’ except for its low Cd content and its susceptibility to brown spot (BS) caused by Bipolaris oryzae. To restore BS resistance, we introduced the BS resistance quantitative trait locus (QTL) bsr1 into it. The resulting isogenic line (IL) had higher resistance to BS than Koshihikari Kan No. 1 while retaining low grain Cd, with no significant difference from Koshihikari in grain yield or quality. This IL, which we named ‘Kanto IL 31’, can be used for breeding varieties with low Cd content and BS resistance.

Corresponding author

Register with J-STAGE for free!