|
Affiliation |
Faculty of Agriculture Region of Animal and Plant Biosciences |
|
Title |
Associate Professor |
|
External Link |
|
|
Related SDGs |
|
YAMAMOTO Akihiro
|
|
|
Degree 【 display / non-display 】
-
博士(農学) ( 2004.3 筑波大学 )
-
修士(農学) ( 2001.3 筑波大学 )
-
学士(農学) ( 1999.3 筑波大学 )
Research Areas 【 display / non-display 】
-
Life Science / Plant nutrition and soil science
-
Environmental Science/Agriculture Science / Environmental agriculture
Education 【 display / non-display 】
-
University of Tsukuba Graduate School, Division of Agriculture
- 2004.3
Country：Japan
-
University of Tsukuba Second Cluster of College
- 1999.3
Country：Japan
Qualification acquired 【 display / non-display 】
-
Consultant Engineer (agriculture)
-
Hazardous Material Handler (first kind)
-
First Kind of Junior High School Teacher License
-
First Kind of High School Teacher License
Papers 【 display / non-display 】
-
Practice of High School-University Collaboration in Project Study and Their Meaning and Issues
YAMAMOTO Akihiro, KUWAHATA Mari, KOBA Yasunori, INOMATA Shuichi
JSSE Research Report 40 ( 5 ) 21 - 24 2026.3
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.) Publisher：Japan Society for Science Education
-
Effect of Drought Stress and Short-term Recovery on Proline and Polyamine Metabolism in Lotus japonicus Reviewed International coauthorship
Lee Y., Yamamoto A., Ragaey M., Hashiguchi M., Akashi R., Saeki Y.
Agricultural Research 15 ( 1 ) 105 - 118 2026.3
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Agricultural Research
Environmental issues, particularly drought and soil salinity, severely limit plant productivity. This study aimed to examine the general reaction of legumes, specifically Lotus japonicus, against drought stress and their recovery following rehydration. After a 5-week culturing period, drought stress was simulated by withholding irrigation for 7 days. Stress response and recovery were evaluated through bioassays, and measurements of chlorophyll, proline and polyamine (stress reactants), and hydrogen peroxide and malondialdehyde (oxidative stress indices). Drought stress inhibited overall growth and decreased relative water content, but a recovery to control levels was observed after 8 h of re-watering. Hydrogen peroxide and malondialdehyde levels increased under drought stress, but showed no significant difference from control levels upon recovery. The accumulation of proline and polyamines was also observed, suggesting that they are effective responses to drought stress in plants. Furthermore, gene expression of key enzymes involved in proline and polyamine metabolism was regulated by stress conditions. By a short 8-h recovery period, the expression levels of metabolism-related genes of proline and polyamine returned to the pre-stress level, but the accumulation of functional substances was not induced. This study provides insight into the physiological and biochemical changes that occur in plants under drought stress and highlights the importance of proline and polyamine metabolism in plant adaptation to drought stress.
-
Practice of Experimental Courses for High School Students and Their Meaning and Issues
YAMAMOTO Akihiro
JSSE Research Report 40 ( 4 ) 47 - 50 2026.2
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.) Publisher：Japan Society for Science Education
-
Differences in expression of ferroptosis-related genes and oxidative stress level between chicken breast and thigh muscles Reviewed International coauthorship
Nakanishi T., Wakamatsu J., Nemoto S., Yamamoto A., Erickson L., Kawahara S.
Comparative Biochemistry and Physiology Part A Molecular and Integrative Physiology 309 111919 2025.11
Language：English Publishing type：Research paper (scientific journal) Publisher：Comparative Biochemistry and Physiology Part A Molecular and Integrative Physiology
Ferroptosis is an iron-dependent regulated cell death characterized by lipid peroxidation. In the skeletal muscle of mammals, where oxidative stress plays an important role in lipid peroxidation, ferroptosis is involved in various diseases and aging. However, the role of ferroptosis in avian skeletal muscle remains underexplored. This study investigated the gene expression of glutathione peroxidase 4 (GPX4) and other ferroptosis-related genes, along with oxidative stress markers in chicken skeletal muscles, focusing on the breast (pectoralis major) and thigh (iliotibialis lateralis) muscles. Gene expression was analyzed using quantitative reverse transcription polymerase chain reaction. Lipid peroxidation and oxidative stress were evaluated by measuring malondialdehyde (MDA), a lipid peroxidation byproduct, and by evaluating the ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG). Our results showed that GPX4 gene expression was significantly higher in the thigh muscle compared to the breast muscle. Ferroptosis suppressor protein 1 (FSP1) expression was also higher in the thigh muscle, while ferritin heavy chain 1 (FTH1) expression was lower in the thigh muscle than in the breast muscle. In contrast, lipid peroxidation, indicated by MDA levels, was higher in the breast muscle, correlating with a lower GSH/GSSG ratio, indicating that the breast muscle is more susceptible to ferroptosis than the thigh muscle. Additionally, the expression of FSP1 and FTH1 showed significant correlations with oxidative stress markers, highlighting their roles in regulating ferroptosis in avian skeletal muscle. This study provides insights into the molecular mechanisms of ferroptosis in avian skeletal muscle, suggesting that regulatory processes may vary between muscle types.
-
Differential salt stress responses and the role of polyamine metabolism in Lotus japonicus ecotypes Reviewed International coauthorship International journal
Yongjae Lee, Akihiro Yamamoto, Chika Kuranaga-Kubo, Marwa Ragaey, Masatsugu Hashiguchi, Ryo Akashi, Yuichi Saeki
Discover Plants 2 252 2025.8
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
Books 【 display / non-display 】
-
新植物栄養・肥料学 改訂版
山本昭洋（ Role： Joint author , トピックス2-5 チャの栄養生理と品質）
朝倉書店 2023.4
Language：Japanese Book type：Scholarly book
MISC 【 display / non-display 】
-
能動的な技術者倫理教育の実践への取り組み
山本昭洋
宮崎大学教学マネジメント研究 1 35 - 49 2024.3
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)
-
Clarification of salt tolerance mechanisms and evaluation of adaptation to salt-accumulated soils of Zoysia spp. Invited
Agricultural Biotechnology 7 ( 1 ) 94 - 98 2023.1
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
-
Clarification of salt tolerance mechanisms of Zoysia spp. and its application to sustainable global environment Invited
Agricultural Biotechnology 6 ( 5 ) 87 - 91 2022.5
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
-
科学技術振興機構『さくらサイエンスプログラム』友情と感動 第288回
山本昭洋
文教ニュース 2685 36 - 36 2022.1
Authorship：Lead author, Corresponding author Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
-
ダイズ根粒菌の生態研究を環境傾度対応型ダイズ生産技術へ Invited
佐伯雄一，山本昭洋
アグリバイオ 3 ( 12 ) 65 - 68 2019.10
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：北隆館
Presentations 【 display / non-display 】
-
高校生の課題研究における高大連携の実践，意義，課題についての一考察
山本昭洋，桑畑真理，木塲康典，猪股秀一
2025年度日本科学教育学会第5回研究会 2026.3.15
Event date： 2026.3.15
Language：Japanese Presentation type：Oral presentation (general)
-
高校生を対象とした実験講座の実践とその意義と課題
山本昭洋
2025年度日本科学教育学会第4回研究会 2026.2.7
Event date： 2026.2.7
Language：Japanese Presentation type：Oral presentation (general)
-
「みやだいず」の根粒形成における環境条件が根粒菌群集構造に及ぼす影響
峯 海大，橋口正嗣，山本昭洋，佐伯雄一
2025年度日本土壌肥料学会九州支部例会
Event date： 2025.12.11 - 2025.12.12
Language：Japanese Presentation type：Oral presentation (general)
-
異なる塩ストレス環境下におけるZoysia matrella の根部の成長 International coauthorship
藤 康樹，山本昭洋，橋口正嗣，Marwa Ragaey，佐伯雄一，明石 良
2025年度日本土壌肥料学会九州支部例会
Event date： 2025.12.11 - 2025.12.12
Language：Japanese Presentation type：Oral presentation (general)
-
宮崎県に特徴的な持続的ダイズ生産と根粒菌群集構造解析
安藤太一，橋口正嗣，山本昭洋，佐伯雄一
2025年度日本土壌肥料学会九州支部例会
Event date： 2025.12.11 - 2025.12.12
Language：Japanese Presentation type：Oral presentation (general)
Awards 【 display / non-display 】
-
令和4年度公募型卒業研究テーマ成果発表会ベストポスター賞
2023.3 宮崎県高等教育コンソーシアム 宮崎市内のビロウ並木の天狗巣・黄化・枯死症状の原因究明と対策
青山実樹，安達鉄矢，山本昭洋，佐伯雄一，櫛間義幸，土屋健一，竹下 稔
-
日本土壌肥料学会九州支部奨励賞
2013.10 日本土壌肥料学会九州支部
山本昭洋
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
-
日本土壌肥料学会2012年度鳥取大会 ポスター賞
2012.9 日本土壌肥料学会
城惣吉, 山本昭洋, 梅原洋佐, 林正紀, 佐伯雄一
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
Grant-in-Aid for Scientific Research 【 display / non-display 】
-
シバに耐塩性をもたらす生体成分の探索
Grant number：23K05492 2023.04 - 2026.03
独立行政法人日本学術振興会 科学研究費基金 基盤研究(C)
Authorship：Principal investigator
-
環境傾度に基づくフィリピンと日本の根粒菌ゲノム多様性と群集構造の比較解析 International coauthorship
Grant number：21KK0103 2021.10 - 2026.03
日本学術振興会 科学研究費基金 国際共同研究加速基金(国際共同研究強化(B))
Authorship：Coinvestigator(s)
-
フィリピンの土着ダイズ根粒菌のゲノム多様性と群集構造解析
Grant number：18K05376 2018.04 - 2021.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
Authorship：Coinvestigator(s)
Available Technology 【 display / non-display 】
-
Home Page： ・土壌肥料学研究室
Related fields where technical consultation is available：・植物（作物）の栄養診断（元素過剰や欠乏）
Message：・共同研究の希望テーマ：環境に左右されない植物の探索・開発
・「病気ではないのに植物(作物)に元気がない」などがあれば、ぜひ教えてください
