A novel mutant with triple the dietary fiber content in white rice

Minoru Nishimura; Asako Kobayashi; Ryohei Morita; Yuya Idesawa; Yusuke Sakuma; Ibuki Otosaka; Katsura Tomita

doi:10.1270/jsbbs.20140

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A novel mutant with triple the dietary fiber content in white rice

Minoru Nishimura, Asako Kobayashi, Ryohei Morita, Yuya Idesawa, Yusuke Sakuma, Ibuki Otosaka, Katsura Tomita

著者情報

キーワード: bacterial flora, dietary fiber, gut, immune function, Koshihikari, near isogenic line (NIL), rice

ジャーナルフリー早期公開

論文ID: 20140

DOI https://doi.org/10.1270/jsbbs.20140

この記事には本公開記事があります。

The final version of this article is now available: Vol. 71 (2021), No. 3

詳細

抄録

Dietary fiber has high functional value in relation to gut flora. We searched for a high-lysine mutant of the most popular rice cultivar in Japan, ‘Koshihikari’, as a route to a higher dietary fiber content like a success case in new barley cultivar, ‘Beau-fiber’. We found several promising high-lysine mutants with high dietary fiber content. One of these, ‘WFE5’, has three times the dietary fiber content in white rice. Two rounds of backcrossing to Koshihikari produced a near-isogenic line with a high fiber content. The line’s agronomic traits were close to those of Koshihikari except for yield and eating quality. As these two traits are critical, we discuss how to improve them.

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