論文 - 湯淺 高志
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Miyazaki M., Araki M., Okamura K., Ishibashi Y., Yuasa T., Iwaya-Inoue M.
Journal of Plant Physiology 170 ( 18 ) 1579 - 1584 2013年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Journal of Plant Physiology
High temperature reduces the grain quality of rice, a situation likely to become more frequent because of global warming. We studied the effects of high-temperature stress on grain quality of heat-tolerant cultivar 'Genkitsukushi' and heat-sensitive cultivar 'Tsukushiroman'. When day/night temperatures were 31/26. °C from heading until maturity, the grain quality of 'Genkitsukushi' was rated at the first inspection grade (high quality), whereas 'Tsukushiroman' showed a remarkable increase in the percentage of white immature kernels (low quality). Nonstructural carbohydrate content in the stem of 'Genkitsukushi' the early maturation was significantly higher than in 'Tsukushiroman' and greatly decreased under high temperature. From 14 to 21 days after heading, the expression of the sucrose transporter gene, OsSUT1, was higher in the stem of 'Genkitsukushi' grown under high temperature than in 'Tsukushiroman'. In addition, the expression of OsSUT1 in the grains of 'Genkitsukushi' was significantly higher than in 'Tsukushiroman' during the ripening period. These results indicate that sugar transport functions more effectively in 'Genkitsukushi' than in 'Tsukushiroman', and that the effectiveness of sugar transport contributes to maintaining high grain quality in 'Genkitsukushi' under high-temperature conditions. © 2013 Elsevier GmbH.
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Induction of a bZIP type Transcription Factor and Amino Acid Catabolism-Re lated Genes in Soybean Seedling in Response to Starvation Stress 査読あり
Takashi YUASA, Yuri NAGASAWA, Katsumasa OSANAI, Ayami KANEKO, Daichi TAJIMA, Myint Phyu Sin Htwe NANG, Yushi ISHIBASHI and Mari IWAYA-INOUE
Journal of Botany, accepted 2013年10月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Yushi Ishibashi, Kenta Okamura, Thuy Phan, Masayuki Miyazaki, Takashi YUASA, Mari Iwaya-Inoue
Environmental and Experimental Botany, in press 2013年10月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Assimilate translocation and expression of sucrose transporter, OsSUT1, contribute to high-performance ripening under heat stress in the heat-tolerant rice cultivar Genkitsukushi
Masayuki Miyazaki, Masato Araki, Kenta Okamura, Yushi Ishibashi, Takashi Yuasa, Mari Iwaya-Inoue
Journal of Plant Physiology, accepted 170 1579 - 1584 2013年8月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Phan T, Ishibashi Y, Miyazaki M, Huong TT, Okamura K, Tanaka S, Nakamura J, Yuasa T, Iwaya-Inoue M,
Journal of Agronomy and Crop Science 199 ( 3 ) 178 - 188 2013年6月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Hsp90 and reactive oxygen species regulate thermotolerance of rice seedlings via induction of heat shock factor A2 (OsHSFA2) and galactinol synthase 1 (OsGolS1) 査読あり
Nong TH, Huong TT, Phan TT, Nakamura J, Iwata T, Harano K, Ishibashi Y, Yuasa T, Iwaya-Inoue M
Agricultural Sciences 4 154 - 164 2013年6月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Kaneko A, Noguchi E, Ishibashi Y, Yuasa T, Iwaya-Inoue M
American Journal of Plant Sciences 4 647 - 653 2013年6月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Tajima D, Kaneko A, Sakamoto M, Ito Y, NongTH, Miyazaki M., Ishibashi Y, Yuasa T, Iwaya-Inoue M,
American Journal of Plant Sciences 4 333 - 339 2013年5月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Ishibashi Y., Koda Y., SH. Zheng SH., Yuasa Y., Iwaya-Inoue M.
Annals of Botany 111 ( 1 ) 95 - 102 2013年1月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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出穂前後の温度処理による登熟中のイネ種子における水分動態、関連遺伝子発現および玄米品質の変動
宮崎 真行, 伊藤 夢奈, NONG Thi Hue, ISHIBASHI Yushi, YUASA Takashi, IWAYA-INOUE Mari
低温生物工学会誌 = Cryobiology and cryotechnology 59 ( 2 ) 149 - 155 2013年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：低温生物工学会
We investigated the effects of different temperature treatments on the ^1H-nuclear magnetic resonance (NMR) relaxation times (T_1 and T_2) before and after the heading stage of rice seeds. The T_1 values at temperatures of 25℃/30℃ and 30℃/25℃ before and after the heading stage were lower than those at 25℃/25℃ 21 days after heading (DAH). The T_2 values at 25℃/30℃ and 30℃/25℃ were abruptly shortened at 28 DAH, while that of under 25℃/25℃ treatment was hardly shortened. In addition, dehydration of rice seeds was accelerated by heat stress at 30℃ before or after the heading stage. The changes in T_1 values at 30℃ before or after the heading stage were similar to the changes in the degree of dehydration. These results indicate that T_1 and T_2 are useful diagnostic indicators for the water status during seed ripening of rice plants. A high level of expression of aquaporin gene OsPIP1;1 in seeds at 25℃/30℃ and 30℃/25℃ was detected using DNA microarray analysis at 14 DAH. Seed quality grown under 25℃/30℃ and 30℃/25℃ treatments was inferior to that of seeds under 25℃/25℃ treatment because of the occurrence of white immature kernels. These results suggested that thermal stress either before or after the heading stage led to a reduction in the quality of rice seeds as well as changes in NMR relaxation times and expression of aquaporin genes.
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Effects of temperature treatments for rice plants before/after heading stages on water status of ripening seeds 査読あり
Miyazaki et al.
Cryobiology and Cryotechnology 58 ( 2 ) 173 - 178 2012年12月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Causative factors of decreasing flower number in cowpea under drought stress during flowering stage 査読あり
Sakamoto T., Hashiguchi Y., Kurauchi E., Imamura M., Ishibashi Y., Muranaka S., Yuasa T., Iwaya-Inoue M.
Cryobiology and Cryotechnology 58 ( 2 ) 81 - 85 2012年12月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Miura K., Shiba H., Ohta M., Kang S.W., Yuasa T., Iwaya-Inoue M., Kamada H., Ezura H.
Plant Biotechnology 29 253 - 260 2012年9月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Reactive oxygen species are involved in gibberellin abscisic acid signaling in barley aleurone cells 査読あり
Ishibashi, Y., Tawaratsumida, T., Kondo, K., Kasa, S., Sakamoto, M., Aoki, N., Zheng, SH., Yuasa, T., Iwaya-Inoue, M
Plant Physiology 158 ( 4 ) 1705 - 1714 2012年7月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Yuasa T., Ishibashi Y., Iwaya-Inoue M
American Journal of Plant Sciences 3 753 - 763 2012年7月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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High temperature-induced repression of the rice sucrose transporter (OsSUT1) and starch synthesis-related genes in sink and source organs at milky ripening stage causes chalky grains
湯淺 高志
Journal of Agronomy and Crop Science 199 178 - 188 2012年7月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Hard X-ray properties of a variable standard candle, Crab, with the Suzaku/HXD
Kouzu T., Terada Y., Tashiro M., Yamada S., Bamba A., Yuasa T., Mori K., Fukazawa Y., Enoto T., Tanaka Y., Shibata S., Makishima K.
AIP Conference Proceedings 1427 265 - 266 2012年5月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：AIP Conference Proceedings
The Crab Nebula had been believed to be a stable standard candle for historical X-ray instruments for many years. Recently it was found that a hard X-ray flux (15-100 keV) of Crab Nebula fluctuated by 10 over 10 years. The origin of the long-term variation is still unclear, but the nature of the Crab Nebula is now hot topic both on science and hardware developments. The HXD onboard Suzaku has the highest sensitivity in the 10-600 keV band. Hence it is useful to search for flux variations and possible spectral changes. We performed systematic studies on Crab X-ray spectra in the 10-600 keV band w ith the HXD, by using 12 observations of Crab until 2010. In this paper, we summarized a hard X-ray study of Crab with the HXD. © 2012 American Institute of Physics.
DOI： 10.1063/1.3696196
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Nagata T., Hara H., Saitou K., Kobashi A., Kojima K., Yuasa T., Ueno O.
Plant Production Science 15 10 - 18 2012年5月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Regulation of soybean seed germination through ethylene production in response to reactive oxygen species
Ishibashi et al.
Annals of Botay 111 95 - 102 2012年4月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Analysis of pre- harvest sprouting during seed maturation using 1H-NMR 査読あり
Tanaka, M., Ishibashi, Y., Yuasa, T., Iwaya-Inoue, M
Cryobiology and Cryotechnology 58 87 - 92 2011年12月
記述言語：英語 掲載種別：研究論文（学術雑誌）