JUN WASAKI

Last Updated :2025/06/16

Affiliations, Positions
Graduate School of Integrated Sciences for Life, Professor
E-mail
junwhiroshima-u.ac.jp
Self-introduction
Major research field is nutrient dynamics of plants. We are mainly focusing on phosphorus (P), which is depleting resource in the world. Recent topics are; functions of root clusters formed under P deficient conditions, P mobilization by root exudates, and improvement P use efficiency by crop plants.

Basic Information

Academic Degrees

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

Educational Activity

  • [Bachelor Degree Program] School of Integrated Arts and Sciences : Department of Integrated Arts and Sciences : Integrated Arts and Sciences
  • [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Bioresource Science
  • [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Life and Environmental Sciences
  • [Doctoral 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 Life and Environmental Sciences

In Charge of Primary Major Programs

  • Integrated Arts and Sciences

Research Fields

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

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 3Term, Cell Science
  2. 2025, Liberal Arts Education Program1, 2Term, Cell Science
  3. 2025, Liberal Arts Education Program1, 3Term, Experimental Methods and Laboratory Work in Biology I
  4. 2025, Liberal Arts Education Program1, 4Term, Experimental Methods and Laboratory Work in Biology II
  5. 2025, Undergraduate Education, Second Semester, Laboratory Work in Natural Sciences
  6. 2025, Undergraduate Education, Second Semester, Practical Methods in Natural Sciences
  7. 2025, Undergraduate Education, 3Term, Seminar in English for Life Sciences
  8. 2025, Undergraduate Education, 2Term, Introduction to Life Sciences
  9. 2025, Undergraduate Education, 1Term, Fundamental Cell Biology
  10. 2025, Undergraduate Education, 4Term, Laboratory Work in Life Sciences B
  11. 2025, Undergraduate Education, 4Term, Practical Methods in Life Sciences B
  12. 2025, Undergraduate Education, 1Term, Plant Environmental Physiology
  13. 2025, Undergraduate Education, First Semester, Fundamental Laboratory Work in Biology
  14. 2025, Undergraduate Education, First Semester, Fundamental Methodology in Biology
  15. 2025, Graduate Education (Master's Program) , 1Term, Special Lectures in Integrated Sciences for Life
  16. 2025, Graduate Education (Master's Program) , 3Term, Research Methods in Life Science
  17. 2025, Graduate Education (Doctoral Program) , Second Semester, Career Development for Life Science
  18. 2025, Graduate Education (Master's Program) , 1Term, Exercises in Bioresource Science A
  19. 2025, Graduate Education (Master's Program) , 2Term, Exercises in Bioresource Science A
  20. 2025, Graduate Education (Master's Program) , 3Term, Exercises in Bioresource ScienceB
  21. 2025, Graduate Education (Master's Program) , 4Term, Exercises in Bioresource ScienceB
  22. 2025, Graduate Education (Master's Program) , Year, Research for Academic Degree Dissertation in Bioresource Science
  23. 2025, Graduate Education (Master's Program) , Year, Research for Academic Degree Dissertation in Life and Environmental Sciences
  24. 2025, Graduate Education (Master's Program) , First Semester, Exercises in Life and Environmental Sciences A
  25. 2025, Graduate Education (Master's Program) , Second Semester, Exercises in Life and Environmental Sciences B
  26. 2025, Graduate Education (Master's Program) , 4Term, Environmental plant sciences and symbiotic microbiology
  27. 2025, Graduate Education (Doctoral Program) , 4Term, Exercises in Integrated Life Sciences
  28. 2025, Graduate Education (Doctoral Program) , Year, Research for Academic Degree Dissertation in Integrated Life Sciences
  29. 2025, Graduate Education (Master's Program) , 4Term, Introduction to Genetics and Genomics

Research Activities

Academic Papers

  1. ★, HalALMT1 mediates malate efflux in the cortex of mature cluster rootlets of Hakea laurina, occurring naturally in severely phosphorus-impoverished soil, NEW PHYTOLOGIST, 246(6), 2597-2616, 202506
    Link to Paper Search Results by DOI
  2. Plant nutrient-acquisition strategies contribute to species replacement during primary succession, JOURNAL OF ECOLOGY, 113(4), 988-1003, 202504
    Link to Paper Search Results by DOI
  3. Responses to low phosphorus conditions of Triadic sebifera (Euphorbiaceae), an invasive plant species on Miyajima Island, southwest Japan, SOIL SCIENCE AND PLANT NUTRITION, 71(2), 122-134, 20250304
    Link to Paper Search Results by DOI
  4. Why are some invasive plant species so successful in nutrient-impoverished habitats in south-western Australia: A perspective based on their phosphorus-acquisition strategies, FUNCTIONAL ECOLOGY, 39(2), 635-652, 202502
    Link to Paper Search Results by DOI
  5. Phenotypic plasticity accounts for changes in plant phosphorus-acquisition strategies from mining to scavenging along a gradient of soil phosphorus availability in South American Campos grasslands, JOURNAL OF ECOLOGY, 113(1), 4-21, 202501
    Link to Paper Search Results by DOI
  6. Why can Palhinhaea cernua (lycophyte) grow closer to fumaroles in highly acidic solfatara fields?, JOURNAL OF PLANT RESEARCH, 138(1), 19-35, 202501
    Link to Paper Search Results by DOI
  7. Interspecific facilitation of micronutrient uptake between cluster-root-bearing trees and non-cluster rooted-shrubs in a Banksia woodland, PLANT AND SOIL, 496(1-2), 71-82, 202403
    Link to Paper Search Results by DOI
  8. Phosphorus absorption kinetics and exudation strategies of roots developed by three lupin species to tackle P deficiency, PLANTA, 259(1), 202401
    Link to Paper Search Results by DOI
  9. Effects of Phosphate-solubilizing Bacteria on Soil Phosphorus Fractions and Supply to Maize Seedlings Grown in Lateritic Red Earths and Cinnamon Soils, MICROBES AND ENVIRONMENTS, 38(2), 2023
    Link to Paper Search Results by DOI
  10. Lipidome Profiling of Phosphorus Deficiency-Tolerant Rice Cultivars Reveals Remodeling of Membrane Lipids as a Mechanism of Low P Tolerance, PLANTS-BASEL, 12(6), 202303
    Link to Paper Search Results by DOI
  11. Phenological shifts of the invasive annual weed Bidens pilosa var. pilosa in response to warmer temperature, PLANT ECOLOGY, 223(10-12), 1155-1165, 202212
    Link to Paper Search Results by DOI
  12. Relationship between soil phosphorus dynamics and low-phosphorus responses at specific root locations of white lupine, SOIL SCIENCE AND PLANT NUTRITION, 68(5-6), 526-535, 20221102
    Link to Paper Search Results by DOI
  13. P6-2-10 Effect of intercropped white lupin on growth and P uptake of maize under different levels and types of phosphorus application., Abstracts of the meeting, the Society of the Science of Soil and Manure, 20130911
  14. Effects of different phosphorus-efficient legumes and soil texture on fractionated rhizosphere soil phosphorus of strongly weathered soils, BIOLOGY AND FERTILITY OF SOILS, 52(3), 367-376, 2016
    Link to Paper Search Results by DOI
  15. Endogenous hormones and expression of senescence-related genes in different senescent types of maize., Journal of Experimental Botany, 56(414), 1117-1128, 20050601
  16. Evaluation of phosphorus starvation inducible genes relating to efficient phosphorus utilization in rice., Plant and Soil, 269(1), 81-87, 20050801
  17. The function of a maize-derived phosphoenolpyruvate carboxylase (PEPC) in phosphorus-deficient transgenic rice., Soil Science and Plant Nutrition, 51(4), 497-506, 20050801
  18. Root exudation, P acquisition and microbial diversity in the rhizosphere of Lupinus albus as affected by P supply and atmospheric CO2 concentration., Journal of Environmental Quality, 34(6), 2157-2166, 20051201
  19. Developmental regulation of photosynthate distribution in leaves of rice., Photosynthetica, 44(1), 1-10, 20060101
  20. Transcriptomic analysis indicates putative metabolic changes caused by manipulation of phosphorus availability in rice leaves., Journal of Experimental Botany, 57(9), 2049-2059, 20060901
  21. Responses to iron limitation in Hordeum vulgare L. as affected by the atmospheric CO2 concentration., Journal of Experimental Botany, 37(3), 1254-1262, 20080301
  22. Cloning and sequencing of the gene for cellobiose 2-epimerase from a ruminal strain of Eubacterium cellulosolvens., FEMS Microbiology Letters, 287(1), 34-40, 20080501
  23. Effects of epilactose on calcium absorption and serum lipid metabolism in rats., Journal of Agricultural and Food Chemistry, 56(21), 10340-10345, 20080901
  24. Influence of arsenic stress on synthesis and localization of low-molecular-weight thiols in Pteris vittata, Environmental Pollution, 158(12), 3663-3669, 201012
  25. Effect of exogenous phosphatase and phytase activities on organic phosphate mobilization in soils with different phosphate adsorption capacities, SOIL SCIENCE AND PLANT NUTRITION, 58(1), 41-51, 2012
  26. Isolation and Characterization of Cellulose-decomposing Bacteria Inhabiting Sawdust and Coffee Residue Composts, MICROBES AND ENVIRONMENTS, 27(3), 226-233, 2012
  27. Phytate Degradation by Fungi and Bacteria that Inhabit Sawdust and Coffee Residue Composts, MICROBES AND ENVIRONMENTS, 28(1), 71-80, 2013
  28. Structure of Novel Enzyme in Mannan Biodegradation Process 4-O-beta-D-Mannosyl-D-Glucose Phosphorylase MGP, JOURNAL OF MOLECULAR BIOLOGY, 425(22), 4468-4478, 2013
  29. The mannobiose-forming exo-mannanase involved in a new mannan catabolic pathway in Bacteroides fragilis, ARCHIVES OF MICROBIOLOGY, 196(1), 17-23, 2014
  30. Prebiotic properties of epilactose., Journal of Dairy Science, 91(12), 4518-4526, 20081201
  31. Element interconnections in Lotus japonicus: a systematic study of the effects of elements additions on different natural variants., Soil Science and Plant Nutrition, 54(1), 91-101, 20090201
  32. Identification of the cellobiose 2-epimerase gene in the genome of Bacteroides fragilis NCTC 9343., Bioscience, Biotechnology and Biochemistry, 73(2), 400-406, 20090201
  33. Overexpression of LASAP2 gene for secretory acid phosphatase of white lupin improves P uptake and growth of tobacco plants., Soil Science and Plant Nutrition, 54(1), 107-113, 20090201
  34. Recent Progress in Plant Nutrition Research: Cross-Talk Between Nutrients, Plant Physiology and Soil Microorganisms, PLANT AND CELL PHYSIOLOGY, 51(8), 1255-1264, 2010
    Link to Paper Search Results by DOI
  35. 9-1 Ionomics study of Lotus japonicus reveals the element homeostasis network in plants, Abstracts of the meeting, the Society of the Science of Soil and Manure, 20080909
  36. 6-7 Screening and characterization of cellulolytic and hemicellulolytic fungi from coffee residues compost and sawdust compost, Abstracts of the meeting, the Society of the Science of Soil and Manure, 20100907
  37. Metabolic alterations proposed by proteome in rice roots grown under low P and high Al concentration under low pH., Plant Science, 172(6), 1157-1165, 20070601
  38. Biotransformation from (+)-catechin to taxifolin due to two steps oxidation; Primary stage of (+)-catechin metabolism by a novel (+)-catechin degradation bacteria, Burkholderia sp., KTC-1 isolated from tropical peat., Biochemical and Biophysical Research Communications, 366(2), 414-419, 20070901
  39. Cloning and sequencing of the cellobiose 2-epimerase gene from an obligatory anaerobe, Ruminococcus albus., Biochemical and Biophysical Research Communications, 360(3), 640-645, 20070901
  40. Analysis of bacterial communities on alkaline phosphatase gene in organic matter applied soil., Soil Science and Plant Nutrition, 54(1), 62-71, 20080201
  41. Localization of acid phosphatase activities in roots of white lupin plants grown under phosphorus-deficient conditions., Soil Science and Plant Nutrition, 54(1), 95-102, 20080201
  42. Secreting portion of acid phosphatase in roots of lupin (Lupinus albus L.) and a key signal for the secretion from the roots., Soil Science and Plant Nutrition, 45(4), 937-945, 19991201
  43. Molecular cloning and root specific expression of secretory acid phosphatase from phosphate deficient lupin (Lupinus albus L.)., Soil Science and Plant Nutrition, 46(2), 427-437, 20000601
  44. Characteristics of phosphoenolpyruvate phosphatase purified from Allium cepa., Plant Science, 161(5), 861-869, 20010501
  45. Cloning and characterization of four phosphate transporter cDNAs in tobacco., Plant Science, 163(4), 837-846, 20020401
  46. Secreted acid phosphatase is expressed in cluster roots of lupin in response to phosphorus deficiency., Plant and Soil, 248(1), 129-136, 20030101
  47. Expression of the OsPI1 gene, cloned from rice roots using cDNA microarray, rapidly responds to phosphorus status., New Phytologist, 158(2), 239-248, 20030601
  48. Structure of Novel Enzyme in Mannan Biodegradation Process 4-O-beta-D-Mannosyl-D-Glucose Phosphorylase MGP, JOURNAL OF MOLECULAR BIOLOGY, 425(22), 4468-4478, 20131115
    Link to Paper Search Results by DOI
  49. The mannobiose-forming exo-mannanase involved in a new mannan catabolic pathway in Bacteroides fragilis, ARCHIVES OF MICROBIOLOGY, 196(1), 17-23, 2014
    Link to Paper Search Results by DOI
  50. ★, Interspecific facilitation of P acquisition in intercropping of maize with white lupin in two contrasting soils as influenced by different rates and forms of P supply, PLANT AND SOIL, 390(1), 223-236, 2015
    Link to Paper Search Results by DOI
  51. Identification and distribution of cellobiose 2-epimerase genes by a PCR-based metagenomic approach, APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 99(10), 4287-4295, 2015
  52. A new finding of cluster roots formed by Helicia cochinchinensis Lour. (Proteaceae)., The Journal of Japanese Botany, 90(2), 103-108, 201505
  53. Properties of secretory acid phosphatase from lupin roots under phosphorus-deficient conditions., Soil Science and Plant Nutrition, 43(special issue), 981-986, 19971201
  54. Structure of a cDNA for an acid phosphatase from phosphate-deficient lupin (Lupinus albus L.) roots., Soil Science and Plant Nutrition, 45(2), 439-449, 19990601
  55. Breeding wheat for zinc efficiency improvement in semi-arid climate. - A review., Tropics, 12(4), 295-312, 20030801
  56. Transcriptomic analysis of metabolic changes by phosphorus stress in rice plant roots., Plant Cell and Environment, 26(9), 1515-1523, 20030901
  57. Possibility of rhizosphere regulation using acid phosphatase and organic acid for recycling phosphorus in sewage sludge., Soil Science and Plant Nutrition, 50(1), 77-83, 20040201
  58. Low phosphorus tolerance mechanisms: phosphorus recycling and photosynthate partitioning in the tropical forage grass, Brachiaria Hybrid cultivar Mulato compared with rice., Plant and Cell Physiology, 45(4), 460-469, 20040401
  59. Expression of lupin acid phosphatase in transgenic rice for use as a phytate-hydrolyzing enzyme in animal feed., Bioscience, Biotechnology and Biochemistry, 68(7), 1611-1616, 20040701
  60. Plant growth promotion abilities and micro-scale bacterial dynamics in the rhizosphere of lupin analyzed by phytate utilization ability., Environmental Microbiology, 7(3), 396-404, 20050301
  61. Influence of arsenic stress on synthesis and localization of low-molecular-weight thiols in Pteris vittata, ENVIRONMENTAL POLLUTION, 158(12), 3663-3669, 2010
    Link to Paper Search Results by DOI
  62. Proteomic analysis of secreted proteins from aseptically grown rice, PHYTOCHEMISTRY, 72(42830), 312-320, 2011
    Link to Paper Search Results by DOI
  63. New microbial mannan catabolic pathway that involves a novel mannosylglucose phosphorylase, BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 408(4), 701-706, 20110520
    Link to Paper Search Results by DOI
  64. 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, 20110801
  65. Evaluation of cellulolytic and hemicellulolytic abilities of fungi isolated from coffee residue and sawdust composts., Microbes and Environments, 26(3), 220-227, 20110801
  66. 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
  67. 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
  68. Overexpression of the LASAP2 gene for secretory acid phosphatase in white lupin improves the phosphorus uptake and growth of tobacco plants, SOIL SCIENCE AND PLANT NUTRITION, 55(1), 107-113, 2009
    Link to Paper Search Results by DOI
  69. Recent Progress in Plant Nutrition Research : Cross-Talk Between Nutrients, Plant Physiology and Soil Microorganisms, Plant and Cell Physiology, 51(8), 1255-1264, 20100801
  70. 9-23 Performances of PEPC transgenic rice plants under phosphorus deficient conditions, Abstracts of the meeting, the Society of the Science of Soil and Manure, 20020325
  71. Interspecific facilitation of P acquisition in intercropping of maize with white lupin in two contrasting soils as influenced by different rates and forms of P supply, PLANT AND SOIL, 390(42737), 223-236, 2015
  72. Production of Lupin Acid Phosphatase in Transgenic Rice for Use as a Phytate-hydrolyzing Enzyme in Animal Feed, Agricultural and Biological Chemistry, 68(7), 1611-1616, 20040723
  73. Effect of exogenous phosphatase and phytase activities on organic phosphate mobilization in soils with different phosphate adsorption capacities, 58(1), 41-51, 20120201
  74. 6-2 Evaluation of cellulolytic and hemicellulolytic abilities of bacteria isolated from coffee residue and sawdust composts, Abstracts of the meeting, the Society of the Science of Soil and Manure, 20110808
  75. PHOSPHORUS-MOBILIZATION STRATEGY BASED ON CARBOXYLATE EXUDATION IN LUPINS (LUPINUS, FABACEAE): A MECHANISM FACILITATING THE GROWTH AND PHOSPHORUS ACQUISITION OF NEIGHBOURING PLANTS UNDER PHOSPHORUS-LIMITED CONDITIONS, EXPERIMENTAL AGRICULTURE, 53(2), 308-319, 2017
    Link to Paper Search Results by DOI
  76. Landrace of Japonica rice, Akamai exhibits enhanced root growth and efficient leaf phosphorus remobilization in response to limited phosphorus availability., Plant and Soil, 414(42737), 327-338, 2017
  77. Landrace of japonica rice, Akamai exhibits enhanced root growth and efficient leaf phosphorus remobilization in response to limited phosphorus availability, PLANT AND SOIL, 414(42737), 327-338, 2017
    Link to Paper Search Results by DOI
  78. Identification of genomic regions associated with low phosphorus tolerance in japonica rice (Oryza sativa L.) by QTL-Seq, SOIL SCIENCE AND PLANT NUTRITION, 64(3), 278-281, 2018
    Link to Paper Search Results by DOI
  79. Organ-specific allocation pattern of acquired phosphorus and dry matter in two rice genotypes with contrasting tolerance to phosphorus deficiency, SOIL SCIENCE AND PLANT NUTRITION, 64(3), 282-290, 2018
    Link to Paper Search Results by DOI
  80. Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities, PLANT AND SOIL, 427(1-2), 191-208, 201806
    Link to Paper Search Results by DOI
  81. Molecular mechanisms underpinning phosphorus-use efficiency in rice, PLANT CELL AND ENVIRONMENT, 41(7), 1483-1496, 201807
    Link to Paper Search Results by DOI
  82. Ancient rice cultivar extensively replaces phospholipids with non-phosphorus glycolipid under phosphorus deficiency, PHYSIOLOGIA PLANTARUM, 163(3), 297-305, 201807
    Link to Paper Search Results by DOI
  83. Distribution and stress tolerance of Fimbristylis dichotoma subsp podocarpa (Cyperaceae) growing in highly acidic solfatara fields, ECOLOGICAL RESEARCH, 33(5), 971-978, 201809
    Link to Paper Search Results by DOI
  84. AtALMT3 is Involved in Malate Efflux Induced by Phosphorus Deficiency in Arabidopsis thaliana Root Hairs, PLANT AND CELL PHYSIOLOGY, 60(1), 107-115, 201901
    Link to Paper Search Results by DOI
  85. Effects of White Lupin and Groundnut on Fractionated Rhizosphere Soil P of Different P-Limited Soil Types in Japan, AGRONOMY-BASEL, 9(2), 201902
    Link to Paper Search Results by DOI
  86. Complementarity of two distinct phosphorus acquisition strategies in maize-white lupine intercropping system under limited phosphorus availability, JOURNAL OF CROP IMPROVEMENT, 35(2), 234-249, 20210304
    Link to Paper Search Results by DOI
  87. Formation of dauciform roots by Japanese native Cyperaceae and their contribution to phosphorus dynamics in soils, PLANT AND SOIL, 461(1-2), 107-118, 202104
    Link to Paper Search Results by DOI
  88. Leaf manganese concentrations as a tool to assess belowground plant functioning in phosphorus-impoverished environments, PLANT AND SOIL, 461(1-2), 43-61, 202104
    Link to Paper Search Results by DOI
  89. Recent insights into the metabolic adaptations of phosphorus-deprived plants, JOURNAL OF EXPERIMENTAL BOTANY, 72(2), 199-223, 20210202
    Link to Paper Search Results by DOI
  90. Multiple analysis of root exudates and microbiome in rice (Oryza sativa) under low P conditions, ARCHIVES OF MICROBIOLOGY, 203(9), 5599-5611, 202111
    Link to Paper Search Results by DOI

Publications such as books

  1. 2021/04, Root Systems in Sustainable Agricultural Intensification, Intercropping to Maximize Root–-Root Interactions in Agricultural Plants: Soil–Root Interface Processes, Wiley-Blackwell, 2021, 4, Scholarly Book, Joint work, E, Wasaki, J., Dissanayaka, D.M.S.B., 978-1-119-52540-0, 289-307
  2. 2017, Plant Macro-Nutrient Use Efficiency: Molecular and Genomic Perspectives., Transgenic approaches for improving phosphorus use efficiency in plants., Academic Press, 2017, Scholarly Book, Joint work, E, Maruyama, H., Wasaki, J., ISBN 978-0-12-811308-0, 323-338

Awards

  1. 2024/05/18, Soil Science and Plant Nutrition Award, 日本土壌肥料学会長 SSPN編集委員長, Kan, A., Maruyama, H., Aoyama, N., Wasaki, J., Tateishi, Y., Watanabe, T., Shinano, T. (2022) Relationship between soil phosphorus dynamics and low-phosphorus responses at specific root locations of white lupine. Soil Science and Plant Nutrition, 68(5-6), 526-535.

Social Activities

Organizing Academic Conferences, etc.

  1. 13th International Conference on the Biogeochemistry of Trace Elements, Local Organizing Committee, 2015/07, 2015/07