Takuji Tonooka

National Agriculture and Food Research Organization

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Naoyuki Kawada

National Agriculture and Food Research Organization

Toji Yoshioka

Institute of Crop Science

Emiko Aoki

Institute of Crop Science

Megumi Yoshida

National Agriculture and Food Research Organization

Koichi Hatta

Institute of Crop Science

Katashi Kubo

National Agriculture and Food Research Organization

Masaya Fujita

University of Houston

Hitoshi Matsunaka

Institute of Crop Science

Shin Taketa

Okayama University

Yanaka Mikiko

Kyushu Okinawa Agricultural Research Center

Cooperative Institutions

National Agriculture and Food Research Organization

Institute of Crop Science

Kyushu Okinawa Agricultural Research Center

Central Region Agricultural Research Center

Institute of Agrobiological Sciences

The University of Tokyo

Western Region Agricultural Research Center

Agricultural Research Center

Tohoku Agricultural Research Center

Ministry of Agriculture, Forestry and Fisheries

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Pearling Quality of Barley Cultivated in an Andsol Upland Field

Japanese Journal of Crop Science (2010)

Takuji Tonooka Naoyuki Kawada Toji Yoshioka Chikako Kiribuchi‐Otobe

黒ボク土で栽培されたオオムギの精麦品質低下とその要因および育種上の改善策について明らかにするため,低タンパク質品種・系統を含む複数の品種・系統を用いて,灰色低地土水田と黒ボク土畑における原麦形質と精麦品質およびそれらに関与する成分含量の変動を解析した.その結果,タンパク質含量と硝子率には品種間差が認められたが,土壌の寄与率も高く,黒ボク土畑ではタンパク質含量と硝子率が高くなりやすいことが確かめられた.また,黒ボク土畑では搗精時間が長くなるとともに精麦白度が低下したが,これらの品質低下は硝子質粒の増加に起因すると考えられた.また,胚乳細胞壁の主要構成多糖であるβ–グルカンの含量は,黒ボク土畑で有意に増加した.黒ボク土畑での搗精時間の増加には,硝子率だけでなくβ–グルカン含量の増加も関与する可能性が考えられた.黒ボク土における硝子質粒の発生抑制策としてタンパク質の低含量化が考えられたが,低タンパク質品種・系統であっても黒ボク土畑では硝子率が高くなり,民間流通麦の品質評価項目に定められている硝子率の許容値よりも低く抑えることはできなかった.このことから,黒ボク土でも硝子質粒の発生しにくいオオムギを育成するためには,タンパク質の低含量化よりも,硝子質化しにくい胚乳形質の利用が効果的であると考えられた.

10.1626/jcs.79.296

Cite

Citations (4)

Identification of phenylamide phytoalexins and characterization of inducible phenylamide metabolism in wheat

Phytochemistry (2019)

Naoki Ube Daiyu Harada Yuhka Katsuyama Kumiko Osaki‐Oka Takuji Tonooka

Jasmonic acid

Cinnamic acid

Bipolaris

Agmatine

Hydroxycinnamic acid

10.1016/j.phytochem.2019.112098

Cite

Citations (32)

コムギにおけるフェニルアミドフィトアレキシンの同定と誘導性フェニルアミド代謝の特性化【JST・京大機械翻訳】

Phytochemistry (2019)

Ube Naoki Harada Daiyu Katsuyama Yuhka Osaki-Oka Kumiko Takuji Tonooka

Source

Cite

Citations (0)

Breeding of Waxy Barley Cultivars in the National Barley Breeding Program of Japan

Japan Agricultural Research Quarterly JARQ (2023)

Takuji Tonooka

Waxy barley is considered a good source of dietary fiber and a convenient functional food in Japan; thus, domestic demand is rapidly increasing. However, most of the demand has been met by imports from countries, such as the USA and Canada, as domestic waxy barley production levels have remained low in Japan. To promote the domestic production of waxy barley, the National Agriculture and Food Research Organization has initiated an intensive breeding program to develop and disseminate elite waxy barley cultivars with superior agronomic traits, such as high-yield potential, high disease resistance, and high quality in terms of processing and food. Extensive planting of the newly bred cultivars raised the Japanese domestic self-sufficiency rate of waxy barley from 3 to 49% in 2016 to 2021, respectively.

10.6090/jarq.57.251

Cite

Citations (5)

Breeding of a new six-rowed waxy barley cultivar “Kihadamochi” exhibiting high levels of yield and β-glucan content

Breeding Research (2022)

Takuji Tonooka Takashi Yanagisawa Emiko Aoki Masato Taira Toji Yoshioka

10.1270/jsbbr.21j15

Cite

Citations (2)

Breeding of a new six-rowed hulled barley cultivar "Harushirane" with proanthocyanidin-free gene

Breeding Research (2013)

Emiko Aoki Takuji Tonooka Toji Yoshioka Naoyuki Kawada Megumi Yoshida

10.1270/jsbbr.15.105

Cite

Citations (0)

Characterization of water-soluble β-glucans from β-glucan riched barley line "Kantohadaka 91"

Abstracts of Meeting of the CSSJ (2010)

Kôzô Komae Yasunori Ichinose Shigenobu Kaneko Takuji Tonooka Emiko Aoki

Characterization

Line (geometry)

Source

Cite

Citations (0)

Molecular and Functional Characterization of PEBP Genes in Barley Reveal the Diversification of Their Roles in Flowering

PLANT PHYSIOLOGY (2009)

Rie Kikuchi Hiroyuki Kawahigashi Tsuyu Ando Takuji Tonooka Hirokazu Handa

Five barley (Hordeum vulgare) PEBP (for phosphatidylethanolamine-binding protein) genes were analyzed to clarify their functional roles in flowering using transgenic, expression, and quantitative trait locus analyses. Introduction of HvTFL1 and HvMFT1 into rice (Oryza sativa) plants did not result in any changes in flowering, suggesting that these two genes have functions distinct from flowering. Overexpression of HvFT1, HvFT2, and HvFT3 in rice resulted in early heading, indicating that these FT-like genes can act as promoters of the floral transition. HvFT1 transgenic plants showed the most robust flowering initiation. In barley, HvFT1 was expressed at the time of shoot meristem phase transition. These results suggest that HvFT1 is the key gene responsible for flowering in the barley FT-like gene family. HvFT2 transgenic plants also showed robust flowering initiation, but HvFT2 was expressed only under short-day (SD) conditions during the phase transition, suggesting that its role is limited to specific photoperiodic conditions in barley. Flowering activity in HvFT3 transgenic rice was not as strong and was modulated by the photoperiod. These results suggest that HvFT3 functions in flowering promotion but that its effect is indirect. HvFT3 expression was observed in Morex, a barley cultivar carrying a dominant allele of Ppd-H2, a major quantitative trait locus for flowering under SD conditions, although no expression was detected in Steptoe, a cultivar carrying ppd-H2. HvFT3 was expressed in Morex under both long-day and SD conditions, although its expression was increased under SD conditions. HvFT3 was mapped to chromosome 1HL, the same chromosome that carries Ppd-H2. Genomic sequence analyses revealed that Morex possesses an intact HvFT3 gene, whereas most of this gene has been lost in Steptoe. These data strongly suggest that HvFT3 may be identical to Ppd-H2.

10.1104/pp.108.132134

Cite

Citations (167)

“Shirayuri Nijo”, a new two-rowed hulled barley cultivar for food with proanthocyanidin-free gene, moderate tolerance to pre-harvest sprouting and high-yield

Breeding Research (2021)

Masato Taira Yanaka Mikiko Kazuhiro Nakamura Tetsufumi Sakai Hitoshi Matsunaka

Sprouting

10.1270/jsbbr.21j07

Cite

Citations (0)

Breeding of a new hulless barley cultivar “Beau Fiber” containing high levels of functional polysaccharides

Breeding Research (2011)

Takuji Tonooka Toji Yoshioka Emiko Aoki Kôzô Komae Yasunori Ichinose

10.1270/jsbbr.13.74

Cite

Citations (6)