Papers - UDATSU Tetsuro
-
Origin of domesticated water chestnuts (Trapa bispinosa Roxb.) and genetic variation in wild water chestnuts Reviewed International coauthorship
Lam D.T., Kataoka T., Yamagishi H., Sun G., Udatsu T., Tanaka K., Ishikawa R.
Ecology and Evolution 14 ( 2 ) 2024.2
Publishing type：Research paper (scientific journal) Publisher：Ecology and Evolution
The water chestnut Trapa bispinosa Roxb. has been domesticated in China and has been reported as the only domesticated species of this genus. To understand the origin of T. bispinosa and its evolution pathway, we compared the genetic similarity and seed morphology of domesticated water chestnut T. bispinosa with three wild species T. natans, T. incisa, and T. japonica along with archeological seed samples from the Tianluoshan site (approximately 7000–6300 cal BP) in China. The largest seed size was observed only in the domesticated species, whereas other wild species showed smaller size including T. natans L. genetically close to the domesticated type, and T. incisa was the smallest in size. The volumes of the seed capsule and endosperm were measured using X ray CT scans, showing the ratios of total volumes between T. bispinosa and wild species ranged from 4.2 to 4.5. The ratios of endosperm volume ranged from 3.3 to 3.7. Both measurements showed domesticated species have larger seed volume. Genome size was indirectly estimated by flow cytometry. Domesticated species with larger seed size was estimated as diploid, as were the wild species except for tetraploid species T. japonica. Domesticated species clearly showed the largest edible organs, but it was not a result of ploidy level changes. Maternal lineages traced using complete whole chloroplast sequences, suggested that T. natans is the closest to T. bispinosa, both of which are close to T. japonica. The result was confirmed by PCR genotyping with chloroplast insertion/deletion (cpINDEL) markers developed in the study. T. incisa showed distinct plastid types within the species, and T. japonica showed a unique plastid genotype. Our study concludes the largest volumes for the edible endosperm have been accomplished through nearly 6000 years of artificial selection, but the domestication did not involve ploidy level changes.
DOI： 10.1002/ece3.10925
-
水田探査の変遷と展望
宇田津 徹朗
東アジア考古科学の新展開 1 26 - 38 2024
Publishing type：Research paper (scientific journal)
-
水田探査の変遷と展望
宇田津 徹朗
東アジア考古学の新展開 － 26 - 38 2024
Publishing type：Research paper (scientific journal)
-
津島岡大遺跡（第39時調査）におけるプラント・オパール分析結果 Invited
宇田津 徹朗
津島岡大遺跡22 ー第39次調査ー － 43 - 51 2023
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
-
砂沢遺跡のトレンチ壁面の土壌ならびに湯の沢遺跡のボーリング試料のプラント・オパール分析結果
宇田津 徹朗
岩城山麓における弥生時代前半期の研究2 － 47 - 53 2023
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Part of collection (book)
-
中国江南における新石器時代の水田稲作－良渚遺跡分におけるボーリング探査、試掘調査とプラント・オパール分析－
宇田津 徹朗, 田崎 博之
中国新石器時代文明の探求 － 129 - 172 2023
Publishing type：Research paper (scientific journal)
-
愛媛大学御幸団地構内遺跡におけるプラント・オパール分析成果
宇田津 徹朗, 田中 克典
愛媛大学御幸団地構内遺跡1次調査 － 171 - 180 2022
Publishing type：Research paper (scientific journal)
-
中西遺跡第31-2次調査採取土壌のプラント・オパール分析
宇田津 徹朗, 田中 克典
奈良県遺跡調査概報2021年度（第二分冊） － 180 - 180 2022
Publishing type：Research paper (scientific journal)
-
津島岡大遺跡第38次調査におけるプラント・オパール分析結果 Invited
宇田津徹朗
岡山大学埋蔵文化財調査研究センター紀要 2019 25 - 29 2021.3
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
-
津島岡大遺跡第37次調査におけるプラント・オパール分析結果 Invited
宇田津徹朗
岡山大学埋蔵文化財調査研究センター紀要 2019 20 - 24 2021.3
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
-
津島岡大遺跡第38次調査におけるプラント・オパール分析結果
宇田津 徹朗
岡山大学埋蔵文化財調査研究センター紀要 2019 － 25 - 29 2021
Publishing type：Research paper (scientific journal)
-
第7節 秋津遺跡第6 次調査第4 遺構面におけるプラント・オパール分析
宇田津 徹朗
秋津遺跡 Ⅰ（下層編） - 261 - 273 2021
Publishing type：Research paper (scientific journal)
-
津島岡大遺跡第37次調査におけるプラント・オパール分析結果
宇田津 徹朗, 田崎 博之
岡山大学埋蔵文化財調査研究センター紀要 2019 － 20 - 24 2021
Publishing type：Research paper (scientific journal)
-
Tanaka K., Zhao C., Wang N., Kubota S., Kanehara M., Kamijo N., Ishikawa R., Tasaki H., Kanehara M., Liu B., Chen M., Nakamura S.i., Udatsu T., Wang C.
Food Production, Processing and Nutrition 2 ( 1 ) 2020.12
Publishing type：Research paper (scientific journal) Publisher：Food Production, Processing and Nutrition
Abstract: To understand rice types that were utilized during postdomestication and in the modern age and the potential of genetic research in aged rice materials, archaeogenetic analysis was conducted for two populations of archaic rice grains from the Mojiaoshan site during the Liangzhu Period in China (2940 to 2840 BC). Sequencing after the PCR amplification of three regions of the chloroplast genome and one region of the nuclear genome showed recovery rates that were comparable to those in previous studies except for one chloroplast genome region, suggesting that the materials used in this work were appropriate for recovering genetic information related to domestication traits by using advanced technology. Classification after sequencing in these regions proved the existence of Japonica and Indica chloroplasts in archaic grains from the west trench, which were subsequently classified into eight plastid groups (type I–VIII), and indicated that these rice grains derived from different maternal lineages were stored together in storage houses at the Mojiaohsan site. Among these plastid groups, type V exhibited the same sequences as two modern Indica accessions that are utilized in basic studies and rice breeding. It was inferred that part of the chloroplast genome of archaic rice has been preserved in modern genetic resources in these two modern Indica accessions, and the results indicated that rice related to their maternal ancestor was present at the Mojiaoshan site during the Liangzhu Period in China. The usefulness of archaeogenetic analysis can be demonstrated by our research data as well as previous studies, providing encouragement for the possibility that archaeogenetic analysis can be applied to older rice materials that were utilized in the rice-domesticated period. Graphical abstract: [Figure not available: see fulltext.]
-
Practice of science education program for integrated learning of agriculture and environment
UDATSU Tetsuro, NAKAYAMA Hayashi
JSSE Research Report 35 ( 1 ) 9 - 12 2020.11
Language：Japanese Publishing type：Research paper (conference, symposium, etc.) Publisher：Japan Society for Science Education
-
Classification of archaic rice grains excavated at the Mojiaoshan site within the Liangzhu site complex reveals an Indica and Japonica chloroplast complex Reviewed
Katsunori Tanaka, Chunfang Zhao, Ningyuan Wang, Shinji Kubota, Masaaki Kanehara, Nobuhiko Kamijo, Ryuji Ishikawa, Hiroyuki Tasaki, Minako Kanehara, Bin Liu, Minghui Chen, Shin-ichi Nakamura,Tetsuro Udatsu and Cailin Wang
Food Production, Processing and Nutrition 2020.6
Language：English Publishing type：Research paper (scientific journal)
-
水田探査結果から推定される良渚遺跡群の水田立地モデル Reviewed
宇田津徹朗、田崎博之、劉斌、王寧遠、鄭雲飛
中国考古学 ( 19 ) 69 - 90 2019.11
Language：Japanese Publishing type：Research paper (scientific journal)
-
楊家圈遺址水田遺迹探査 Reviewed
宇田津澈朗、宮本一夫、欒豊実、靳桂雲、王富強
東方考古 15 2019.4
Language：Chinese Publishing type：Research paper (scientific journal)
-
楊家圏遺跡における水田遺構探査 Invited
宇田津徹朗
東北アジア農耕伝播過程の植物考古分析による実証的研究 2019.3
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
-
プラント・オパール分析から見た秋津遺跡と中西遺跡の水田稲作 Invited
宇田津徹朗
弥生初期水田に関する総合的研究ー文理融合研究の新展開ー 講演要旨集 2018.3
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)