Comprehensive study of the tree flora of Southeast Asia based on surveys in fields including Borneo and Sumatra

2017 Fiscal Year Annual Research Report

• Project/Area Number: 15H02640
• Research Institution: Kyushu University
• Principal Investigator: 矢原 徹一 九州大学, 理学研究院, 教授 (90158048)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 熱帯林 / 種多様性 / 東南アジア / クスノキ科 / 分子系統 / 新種

Outline of Annual Research Achievements

本研究は種多様性がとくに高いボルネオ島とスマトラ島でトランセクト調査を集中的に実施し、これらの地域の樹木多様性を定量的に記述すること、また、クスノキ科などについて東南アジア全種を対象に分類学的研究を進め、新種を記載し、チェックリストを発表するを目的としている。平成29年度はボルネオ島（サラワク州、ブルネイ国）でトランセクト調査を実施し、東南アジアでもっとも種多様性が高いボルネオ島のデータを充実させた。また、重点的研究対象としているクスノキ科のDNAサンプルの分析と分類学的研究・新種記載を集中的に進め、クスノキ科についての東南アジア産全種チェックリストを作成した。クスノキ科の分類学的研究資料をさらに充実させるため、ミャンマー・タイ・マレー半島・ラオス・カンボジアで補足調査を実施した。これらの資料にもとづき、シロダモ属、ニッケイ属、シナクスモドキ属についてMIGseq, ITSによる系統解析を行った。ITSでは近縁種間の違いがなかったり、近縁種間で多型が共有されているケースがあったが、このような場合でもMIGseqでは近縁種間で顕著な違いが見られ、種判別を行うことが可能だった。MIGseqにもとづく解析の結果、シロダモ属では55種が確認され、うち38種（69%）が新種だった。シナクスモドキ属では27種が確認され、うち14種（52％）が新種だった。ニッケイ属では104種が確認され、うち31種（30％）が新種だった。これらの結果から、東南アジア熱帯林にはいまなお多くの未記載種が残されていることが明らかになった。

Research Progress Status

平成29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成29年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] FRIM/Forest Department Sarawak/Sabah Park(マレーシア)
  • Country Name: MALAYSIA
  • Counterpart Institution: FRIM/Forest Department Sarawak/Sabah Park
• [Int'l Joint Research] LIPI(インドネシア)
  • Country Name: INDONESIA
  • Counterpart Institution: LIPI
• [Int'l Joint Research] Dalat University/Institute of Tropical Biology(ベトナム)
  • Country Name: VIET NAM
  • Counterpart Institution: Dalat University/Institute of Tropical Biology
• [Int'l Joint Research] Forest Herbarium(タイ)
  • Country Name: THAILAND
  • Counterpart Institution: Forest Herbarium
• [Int'l Joint Research] Laos National University(ラオス)
  • Country Name: LAOS
  • Counterpart Institution: Laos National University
• [Journal Article] Lecanorchis vietnamica (Orchidaceae), a newly recorded mycoheterotrophic genus and species from Cambodia. (2018)
  • Author(s): Suetsugu K, Tagane S, Toyama H, Chhnang P, Yahara T.
  • Journal Title: Cambodian Journal of Natural Histrory Volume: 2018 Pages: 6-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Five new species of Syzygium (Myrtaceae) from Indochina and Thailand (2018)
  • Author(s): Tagane S, Dang VS, Souladeth P, Nagamasu H, Toyama H, Naiki A, Fuse K, Tran H, Yang CJ, Prajaksood A, Yahara T.
  • Journal Title: Phytotaxa Volume: 375 Pages: 247-260
  • DOI: http://dx.doi.org/10.11646/phytotaxa.375.4.1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Contributions to the flora of Myanmar II: New records of eight woody species from Tanintharyi region, southern Myanmar. (2018)
  • Author(s): Tagane S, Tanaka N, Aung MM, Naiki A, Yahara T.
  • Journal Title: The Natural History Bulletin of the Siam Society Volume: 63 Pages: 47-56
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Two new species of Neolitsea (Lauraceae), N. kraduengensis from Thailand and N. vuquangensis from Vietnam and an analysis of their phylogenetic positions using ITS sequences (2018)
  • Author(s): Mitsuyuki C, Tagane S, Ngoc NV, Binh HT, Suddee S, Ruangruea S, Toyama H, Mase K, Yang C-J, Naiki A, Yahara T.
  • Journal Title: Acta Phytotaxonomica et Geobotanica Volume: 69 Pages: 161-173
  • DOI: doi: 10.18942/apg.201810
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] First record of the mycoheterotrophic orchid Lecanorchis taiwaniana from Nam Ha National Protected Area, northern Laos. (2018)
  • Author(s): Suetsugu K, Souladeth P, Tagane S, Yahara T.
  • Journal Title: Acta Phytotaxonomica Geobotanica Volume: 69 Pages: 139-141
  • DOI: doi: 10.18942/apg.201719
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Gentiana laotica, a new species of Gentiana from Laos (2018)
  • Author(s): Souladeth P, Tagane S, Naiki A, Nagamasu H, Yahara T,
  • Journal Title: Thai Forest Bulletin of Botany Volume: 46 Pages: 72-75
  • DOI: DOI https://doi.org/10.20531/tfb.2018.46.1.11
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Erythroxylum calyptratum (Erythroxylaceae), a new species from Mt. Fansipan, northern Vietnam. (2018)
  • Author(s): Komada N, Tagane S, Ngoc NV, Binh HT, Son HT, Toyama H, Nagamasu H, Naiki A, Yahara T.
  • Journal Title: Phytotaxa Volume: 347 Pages: 279-284
  • DOI: http://dx.doi.org/10.11646/phytotaxa.347.4.4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A new species and two new records of Quercus (Fagaceae) from northern Vietnam. (2018)
  • Author(s): Binh HT, Ngoc NV, Bon TN, Tagane S, Yahara T.
  • Journal Title: PhytoKeys Volume: 92 Pages: 1-15
  • DOI: doi: 10.3897/phytokeys.92.21831
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Lithocarpus vuquangensis (Fagaceae), a new species from Vu Quang National Park, Vietnam (2018)
  • Author(s): Ngoc NV, Hung NV, Binh HT, Tagane S, Toyama H, Son HT, Ha TV, Yahara T.
  • Journal Title: PhytoKeys Volume: 95 Pages: 15-25
  • DOI: https://doi.org/10.3897/phytokeys.95.21832
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Quercus trungkhanhensis (Fagaceae), a new species from Cao Vit Gibbon Conservation Area, Cao Bang Province, northeastern Vietnam. (2018)
  • Author(s): Binh HT, Ngoc NV, Tai VA, Son HT, Tagane S, Yahara T.
  • Journal Title: Acta Phytotaxonomica et Geobotanica Volume: 69 Pages: 53-61
  • DOI: https://doi.org/10.18942/apg.201713
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Lecanorchis sarawakensis (Orchidaceae, Vanilloideae), a new mycoheterotrophic species from Sarawak, Borneo. (2018)
  • Author(s): Suetsugu K, Yiing LC, Naiki A, Tagane S, Takeuchi Y, Toyama H, Yahara T.
  • Journal Title: Phytotaxa Volume: 338 Pages: 13
  • DOI: DOI: http://dx.doi.org/10.11646/phytotaxa.338.1.13
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A taxonomic study of Quercus langbianensis complex based on morphology, and DNA barcodes of classic and next generation sequences. (2018)
  • Author(s): Binh HT, Ngoc NV, Tagane S, Toyama H, Mase K, Mitsuyuki C, Suyama Y, Yahara T.
  • Journal Title: PhytoKeys Volume: 95 Pages: 37-70
  • DOI: https://doi.org/10.3897/phytokeys.95.21126
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Flora of Nam Kading National Protected Area IV: Two new species of Annonaceae, Monoon namkadingensis and Neouvaria laosensis, (2018)
  • Author(s): Tagane S, Souladeth P, Zhang M, Yahara T.
  • Journal Title: Phytotaxa Volume: 336 Pages: 82-88
  • DOI: http://dx.doi.org/10.11646/phytotaxa.336.1.6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Flora of Nam Kading National Protected Area V: Begonia namkadingensis (Begoniaceae), a new species in limestone area. (2018)
  • Author(s): Yang C-I, Tagane S, Souladeth P, Okabe N, Hu J-M, Yahara T.
  • Journal Title: Phytotaxa Volume: 334 Pages: 195-199
  • DOI: DOI: http://dx.doi.org/10.11646/phytotaxa.334.2.8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Flora of Bokor National Park VII: Thismia bokorensis (Thismiaceae), a new species representing a new generic record (2018)
  • Author(s): Suetsugu K, Tsukaya H, Tagane S, Chhang P, Yukawa T, Yahara T.
  • Journal Title: Phytotaxa Volume: 334 Pages: 65-69
  • DOI: DOI: http://dx.doi.org/10.11646/phytotaxa.334.1.10
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Diversity of tropical forests in South East Asia under the threat of rapid loss (2017)
  • Author(s): Yahara T.
  • Organizer: International Botanical Congress
  • Int'l Joint Research / Invited
• [Presentation] SE Asian Plant Diversity Assessment Network (2017)
  • Author(s): Yahara T.
  • Organizer: 9th GEOSS AP symposium
  • Int'l Joint Research / Invited