Toshinori Nagaoka

Last Updated :2025/07/05

Affiliations, Positions
Graduate School of Integrated Sciences for Life, Associate Professor
E-mail
tnagaokhiroshima-u.ac.jp
Self-introduction
Aiming for sustainable plant production, we are conducting researches on the effective utilization of useful resources, dynamics of nutrients in soils, and improvement of their utilization by plants. We analyze productivityand nutrient use efficiency of crops (such as rice) by applying organic matter such as compost.

Basic Information

Major Professional Backgrounds

  • 1991, Hiroshima University, Faculty of Applied Biological Science, Research Associate
  • 2002, Hiroshima University, Graduate School of Biosphere Science, Research Associate
  • 2003, Hiroshima University, Graduate School of Biosphere Science, Associate Professor
  • 2019, Hiroshima University, Graduate School of Integrated Sciences for Life, Associate Professor

Educational Backgrounds

  • Hokkaido University, Graduate School, Division of Agriculture, Department of Agricultural Chemistry, Japan
  • Hokkaido University, Faculty of Agriculture, Department of Agricultural Chemistry, Japan

Academic Degrees

  • Doctor of Philosophy, HOKKAIDO UNIVERSITY
  • Master of Agriculture, HOKKAIDO UNIVERSITY

Educational Activity

  • [Bachelor Degree Program] School of Applied Biological Science : Department of Applied Biological Science : Applied Animal and Plant Science Program
  • [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Bioresource Science
  • [Doctoral Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Bioresource Science

In Charge of Primary Major Programs

  • Applied Animal and Plant Science Program

Research Fields

  • Agricultural sciences;Agricultural chemistry;Plant nutrition / Soil science

Research Keywords

  • Soil
  • Soil organic matter
  • Crop production
  • Nutrient cycling

Affiliated Academic Societies

  • Japanease Society of Soil Science and Plant Nutrition, 1991
  • Japanease Society of Soil Microbiology, 2002
  • Crop Science Society of Japan, 2022

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 1Term, Introduction to Applied Biological Sciences toward SDGs
  2. 2025, Undergraduate Education, 1Term, Introduction to Applied Biological Sciences
  3. 2025, Undergraduate Education, Intensive, Laboratory Work in General Chemistry
  4. 2025, Undergraduate Education, 2Term, Introduction to Microbiology
  5. 2025, Undergraduate Education, 4Term, Agricultural Soil Science
  6. 2025, Undergraduate Education, 3Term, Introduction to Applied Animal and Plant Science
  7. 2025, Undergraduate Education, Intensive, Laboratory and Field Works in Applied Animal and Plant Science
  8. 2025, Undergraduate Education, Second Semester, Graduation Thesis I
  9. 2025, Undergraduate Education, First Semester, Graduation Thesis II
  10. 2025, Undergraduate Education, Second Semester, Graduation Thesis III
  11. 2025, Undergraduate Education, Second Semester, Plant Pathology
  12. 2025, Undergraduate Education, Intensive, (AIMS) Physiology of Field Crop Production
  13. 2025, Undergraduate Education, Intensive, Physiology of Field Crop Production
  14. 2025, Graduate Education (Master's Program) , 3Term, Research Methods in Life Science
  15. 2025, Graduate Education (Master's Program) , 1Term, Exercises in Bioresource Science A
  16. 2025, Graduate Education (Master's Program) , 2Term, Exercises in Bioresource Science A
  17. 2025, Graduate Education (Master's Program) , 3Term, Exercises in Bioresource ScienceB
  18. 2025, Graduate Education (Master's Program) , 4Term, Exercises in Bioresource ScienceB
  19. 2025, Graduate Education (Master's Program) , Year, Research for Academic Degree Dissertation in Bioresource Science
  20. 2025, Graduate Education (Master's Program) , 1Term, Plant Production Science I
  21. 2025, Graduate Education (Master's Program) , 3Term, Plant Production Science II

Research Activities

Academic Papers

  1. Lycopersiconolide, a steroid lactone from tomato roots., Phytochemistry, 26(7), 2113-2114, 198707
  2. Fungitoxic compounds from the roots of the eggplant stock., Annals of the Phytopathological Society of Japan, 54(4), 453-459, 198810
  3. Lycopersiconol, a pregnane derivative from tomato stock roots., Phytochemistry, 27(12), 3982-3984, 198812
  4. Angiotensin I converting enzyme inhibitory peptides generated from sardine muscle by food industry., J. Jpn. Soc. Food Sci. Technol., 39(8), 678-683, 199208
  5. Digestion of peptides from sardine muscle that inhibit angiotensin I converting enzyme by intestinal enzymes of pigs., J. Agric. Chem. Soc. Jpn., 66(11), 1645-1647, 199211
  6. Identification and biological activity of germination-inhibiting long-chain fatty acids in animal-waste composts., Plant and Cell Physiology, 34(4), 605-612, 199304
  7. Steroidal alkaloids from roots of tomato stock., Phytochemistry, 34(4), 1153-1157, 199311
  8. Fungitoxic compounds from the roots of tomato stock., Annals of the Phytopathological Society of Japan, 61(2), 103-108, 199504
  9. Selective inhibitors of germination of legume seeds in activated sludge compost., Plant Growth Regulation, 20(3), 295-302, 199612
  10. Effect of salinity on seed germination and seedling growth of the species collected from the saline areas of Ilan., Plant Nutrition - for Sustainable Food Production and Environment= Kluwer Academic Publishers, 417-418, 199707
  11. Effects of organic-acid treatment of phosphate rocks on the phosphorus availability to Italian ryegrass., Plant Nutrition - for Sustainable Food Production and Environment= Kluwer Academic Publishers, 619-624, 199707
  12. Effects of different plant species on soil microbial biomass carbon in a grassland soil., Plant Nutrition - for Sustainable Food Production and Environment= Kluwer Academic Publishers, 769-770, 199707
  13. Effects of organic acid-treated phosphate rocks on the phosphorus availability to Italian ryeglass., Soil Science and Plant Nutrition, 43(Special Issue), 1067-1072, 1997
  14. Relative importance of protons and solution calcium concentration in phosphate rock dissolution by organic acids., Soil Science and Plant Nutrition, 44(4), 617-625, 199812
  15. Residual effects of organic acid-treated phosphate rocks on some soil properties and phosphate availability., Soil Science and Plant Nutrition, 44(4), 627-634, 199812
  16. Microbial biomass, S mineralization and S uptake by African millet from soil amended with various composts, Soil Biology & Biochemistry, 32(6), 845-852, 200006
    Link to Paper Search Results by DOI
  17. Sesquiterpenoids from the roots of Solanum aethiopicum, Zeitschrift fur Naturforschung C, 56(3/4), 181-187, 2001
    Link to Paper Search Results by DOI
  18. Sesquiterpenoids in root exudates of Solanum aethiopicum, Zeitschrift fur Naturforschung C, 56(9/10), 707-713, 2001
    Link to Paper Search Results by DOI
  19. Nutrient requirements (N, P, S) of microbial biomass formation in a regosol of Japan., Food security and sustainability of agro-ecosystems through basic and applied research= Kluwer Academic Publishers, 622-623, 200107
  20. Degradation of chlorinated aromatic acids from sludge compost in soils., Food security and sustainability of agro-ecosystems through basic and applied research= Kluwer Academic Publishers, 848-849, 200107
  21. Generation of chlorinated aromatic acids during sludge-composting and their fate in soils, Soil Science and Plant Nutrition, 47(3), 443-453, 200109
    Link to Paper Search Results by DOI
  22. Antifungal activity of oosporein from an antagonistic fungus against Phytophthora infestans, Zeitschrift fur Naturforschung C, 59(3/4), 302-304, 2004
    Link to Paper Search Results by DOI
  23. Relationships between microbial biomass nitrogen, nitrate leaching and nitrogen uptake by corn in a compost and chemical fertilizer-amended regosol, Soil Science and Plant Nutrition, 52(2), 186-194, 200604
    Link to Paper Search Results by DOI
  24. Nitrate leaching in granitic regosol as affected by N uptake and transpiration by corn, Soil Science and Plant Nutrition, 53(3), 300-309, 200706
    Link to Paper Search Results by DOI
  25. Compost amendment enhances the biological properties of Andosols and improves phosphorus utilization from added rock phosphate, Soil Science and Plant Nutrition, 56(4), 607-616, 201008
    Link to Paper Search Results by DOI
  26. Compost amendment enhances population and composition of phosphate solubilizing bacteria and improves phosphorus availability in granitic regosols, Soil Science and Plant Nutrition, 57(4), 529-540, 201108
    Link to Paper Search Results by DOI
  27. Evaluation of Cellulolytic and Hemicellulolytic Abilities of Fungi Isolated from Coffee Residue and Sawdust Composts, Microbes and Environments, 26(3), 220-227, 20110901
    Link to Paper Search Results by DOI
  28. Isolation and Characterization of Cellulose-decomposing Bacteria Inhabiting Sawdust and Coffee Residue Composts, Microbes and Environments, 27(3), 226-233, 20120906
    Link to Paper Search Results by DOI
  29. Phytate Degradation by Fungi and Bacteria that Inhabit Sawdust and Coffee Residue Composts, Microbes and Environments, 28(1), 71-80, 20130312
    Link to Paper Search Results by DOI
  30. Comparative physiological analysis of salinity tolerance in rice, Soil Science and Plant Nutrition, 59(6), 896-903, 20131201
    Link to Paper Search Results by DOI
  31. Effect of Salt Stress on Na Accumulation, Antioxidant Enzyme Activities and Activity of Cell Wall Peroxidase of Huckleberry (Solanum scabrum) and Eggplant (Solanum melongena), INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY, 17(6), 1149-1156, 201512
  32. Cloning and gene expression analysis of ascorbic acid biosynthesis enzymes in Moringa oleifera, African Journal of Agricultural Research, 10(22), 2274-2285, 20150528
  33. Effects of drought stress on growth, solute accumulation and membrane stability of leafy vegetable, huckleberry (Solanum scabrum Mill.), Journal of Environmental Biology, 37(1), 107-114, 201601
  34. Na+ Retention in the Root is a Key Adaptive Mechanism to Low and High Salinity in the Glycophyte, Talinum paniculatum (Jacq.) Gaertn. (Portulacaceae), JOURNAL OF AGRONOMY AND CROP SCIENCE, 203(1), 56-67, 2017
    Link to Paper Search Results by DOI
  35. Characterization of type 3 metallothionein-like gene (OsMT-3a) from rice, revealed its ability to confer tolerance to salinity and heavy metal stresses, ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 147, 157-166, 201803
    Link to Paper Search Results by DOI
  36. Effects of varying proportions of crushed rice with hull in total mixed ration silage on feed intake, nutrient digestibility, feed particle passage rates, and nitrogen balance in Japanese Black cattle, 89(4), 423-430, 201811
  37. A comparative study of the growth and physiological parameters of two oat (Avena sativaL.) lines under salinity stress, SOIL SCIENCE AND PLANT NUTRITION, 66(6), 847-853, 20201101
    Link to Paper Search Results by DOI
  38. Shoot and root responses to low phosphorus and their genotypic variability in selected cultivars of Japanese core collections of maize and soybean, Soil Science and Plant Nutrition, 70(2), 100-113, 20240401
    Link to Paper Search Results by DOI