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Affiliation |
Organization for Promotion of Research and Industry-Academic Regional Collaboration Institute for Tenure Track Promotion |
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Title |
Associate Professor |
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External Link |
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TOKUMOTO Yuji
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Research Areas 【 display / non-display 】
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Life Science / Forest science
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Life Science / Ecology and environment
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Environmental Science/Agriculture Science / Conservation of biological resources
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Environmental Science/Agriculture Science / Science in plant genetics and breeding
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Life Science / Biodiversity and systematics
Papers 【 display / non-display 】
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Kijidani Y., Tsuyama T., Tokumoto Y.
Forests 14 ( 4 ) 2023.4
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Forests
The role of plant hormones in tension wood (TW) formation has been studied but is still unclear. IAA, ABA, ACC, tZ, tZR, iP, and iPR in cambial region tissues were identified and quantified by liquid chromatography/mass spectrometry (LC/MS). We examined the distribution of plant hormones and their precursors in the stems of Quercus myrsinifolia Blume and Castanopsis cuspidata var.sieboldii Nakai after bending the stems or applying an ethylene precursor (ACC). After 3 weeks of bending, though not after 1 week of bending, the auxin (IAA) and abscisic acid (ABA) amounts were larger on the TW side than on the opposite wood (OW) side and in upright trees. After 2 weeks of bending, the peak concentrations of IAA in cambium on the TW side were obviously higher than those on the OW side. After 1 week of bending, the ACC amounts on both sides were larger than in upright trees, but after 3 weeks of bending, they were smaller than in upright trees. Applied ACC did not enhance TW formation but induced axical parenchyma and phloem formation in C. cuspidata var.sieboldii. These results indicated that the distribution patterns of IAA and ABA might have important roles in TW formation in these two species. The role of ACC might be limited in the early stages of TW formation.
DOI： 10.3390/f14040813
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Nagai Shin, Chifuyu Katsumata, Tomoaki Miura, Narumasa Tsutsumida, Tomoaki Ichie, Ayumi Kotani, Michiko Nakagawa, Kho Lip Khoon, Hideki Kobayashi, Tomo’omi Kumagai, Shunsuke Tei, Runi anak Sylvester Pungga, Taizo Yamada, Akihiro Kameda, Masayuki Yanagisawa, Kenlo Nishida Nasahara, Hiroyuki Muraoka, Kazuhito Ichii, Yuji Tokumoto
Frontiers in Forests and Global Change 6 2023.2
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Frontiers Media {SA}
Recent advances in satellite-borne optical sensors led to important developments in the monitoring of tropical ecosystems in Asia, which have been strongly affected by recent anthropogenic activities and climate change. Based on our feasibility analyses conducted in Indonesia in Sumatra and Sarawak, Malaysia in Borneo, we discuss the current situation, problems, recent improvements, and future tasks regarding plant phenology observations and land-cover and land-use detection. We found that the Multispectral Instrument (MSI) on board the Sentinel-2A/2B satellites with a 10-m spatial resolution and 5-day observational intervals could be used to monitor phenology among tree species. For the Advanced Himawari Imager (AHI) on board the Himawari-8 geostationary satellite with a 1,000-m spatial resolution and 10-min observational intervals, we found that the time-series in vegetation indices without gaps due to cloud contamination may be used to accurately detect the timing and patterns of phenology among tree species, although the spatial resolution of the sensor requires further improvement. We also found and validated that text and pictures with geolocation information published on the Internet, and historical field notes could be used for ground-truthing land cover and land use in the past and present time. The future development of both high frequency (≤ 10 min) and high spatial resolution (≤ 10 m) optical sensors aboard satellites is expected to dramatically improve our understanding of ecosystems in the tropical Asia.
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Taichi Motoda, Fu-Chia Chen, Taku Tsuyama, Yuji Tokumoto, Yoshio Kijidani, Ichiro Kamei
Bioscience, Biotechnology, and Biochemistry 87 ( 2 ) 217 - 227 2023.1
Language：English Publishing type：Research paper (scientific journal) Publisher：Oxford University Press ({OUP})
DOI： 10.1093/bbb/zbac203
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Tomoaki Miura, Yuji Tokumoto, Nagai Shin, Kentaro K. Shimizu, Runi Anak Sylvester Pungga, Tomoaki Ichie
Ecological Research 38 ( 3 ) 386 - 402 2023
Language：Japanese Publishing type：Research paper (scientific journal)
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Yuji Tokumoto, Kayo Hashimoto, Takashi Soyano, Seishiro Aoki, Wataru Iwasaki, Mai Fukuhara, Tomomi Nakagawa, Kazuhiko Saeki, Jun Yokoyama, Hironori Fujita, Masayoshi Kawaguchi
Journal of Plant Research 134 ( 4 ) 885 2021.4
Language：Japanese Publishing type：Research paper (scientific journal)
A correction to this paper has been published: https://doi.org/10.1007/s10265-021-01295-3.
MISC 【 display / non-display 】
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Differences in understory environment and soil microbiome between inside and outside deer fences in Kyushu
Sakurai Yuki, Katayama Ayumi, Abe Hayato, Tsuyama Taku, Tokumoto Yuji
The Japanese Forest Society Congress 134 ( 0 ) 660 2023.5
Authorship：Corresponding author Language：Japanese Publishing type：Research paper, summary (national, other academic conference) Publisher：THE JAPANESE FORESTRY SOCIETY
[in Japanese]
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Assessing spatial and temporal variations in soil erosion using UAV in an understory declined forest
Miyazaki Takuma, Shinohara Yoshinori, Tokumoto yuji, Katayama Ayumi, Kume Tomonori
The Japanese Forest Society Congress 133 ( 0 ) 522 2022.5
Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：THE JAPANESE FORESTRY SOCIETY
[in Japanese]
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Multi-species transcriptomic analysis for the community-wide phenology in Southeast Asia
徳本雄史, 徳本雄史, 徳本雄史, 永井信, 久米朋宣, 清水健太郎, 清水健太郎
日本生態学会大会講演要旨(Web) 69th 2022
Publishing type：Rapid communication, short report, research note, etc. (scientific journal)
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土壌浸食による土壌微生物相とそれらの機能面への影響?九州大学宮崎演習林内2ヶ所での予備解析結果?
徳本雄史, 小山田美森, 片山歩美
九州森林学会大会(Web) 77th 2021
Publishing type：Rapid communication, short report, research note, etc. (scientific journal)
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TAKANO(TAKENAKA) KOHEI, ICHIOKA TAKAO, NAKAGAWA MICHIKO, KISHIMOTO KEIKO, YAMASHITA SATOSHI, TOKUMOTO YUUSHI, FUKUDA DAISUKE, KAMOI TAMAKI, KATO YUMI, NAGAMASU HIDETOSHI, ICHIKAWA MASAHIRO, MOMOSE KUNIYASU, NAKASHIZUKA TOORU, SAKAI SHOKO
日本生態学会大会講演要旨集 60th 298 2013.3
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)
Grant-in-Aid for Scientific Research 【 display / non-display 】
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Impact of beech water and nutrient stress induced by understory degradation on soil biodiversity and ecosystem function
Grant number：22H03793 2022.04 - 2026.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B) Grant-in-Aid for Scientific Research (B)
Authorship：Principal investigator
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高頻度・高空間分解機能衛星による日本とボルネオの常緑広葉樹の種判別と広域マッピング
Grant number：22K1235201 2022.04 - 2026.03
科学研究費補助金 基盤研究(C)
Authorship：Coinvestigator(s)
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下層植生消失によるブナの水・養分ストレスが土壌生物多様性と生態系機能に与える影響
Grant number：22H0379301 2022.04 - 2026.03
科学研究費補助金 基盤研究（B）
Authorship：Coinvestigator(s)
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Elucidation of ecological function of pioneer tree species and interspecific interaction with late succession tree species for vegetation restoration in Southeast Asia
Grant number：22K05692 2022.04 - 2026.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C) Grant-in-Aid for Scientific Research (C)
Authorship：Principal investigator
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Discrimination and broad-scale mapping of evergreen broad-leaved trees in Japan and Borneo by satellite remote-sensing with high frequency and high spatial resolution
Grant number：22K12352 2022.04 - 2026.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C) Grant-in-Aid for Scientific Research (C)
Authorship：Principal investigator