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dc.contributor.authorTarmadi, Didi
dc.contributor.authorTobimatsu, Yuki
dc.contributor.authorYamamura, Masaomi
dc.contributor.authorMiyamoto, Takuji
dc.contributor.authorMiyagawa, Yasuyuki
dc.contributor.authorUmezawa, Toshiaki
dc.contributor.authorYoshimura, Tsuyoshi
dc.contributor.alternative飛松, 裕基
dc.contributor.alternative山村, 正臣
dc.contributor.alternative宮本, 託志
dc.contributor.alternative梅澤, 俊明
dc.contributor.alternative吉村, 剛
dc.date.accessioned2018-08-28T01:42:22Z-
dc.date.available2018-08-28T01:42:22Z-
dc.date.issued2018-01-22
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/2433/234088-
dc.description.abstractTermites represent one of the most efficient lignocellulose decomposers on earth. The mechanism by which termites overcome the recalcitrant lignin barrier to gain access to embedded polysaccharides for assimilation and energy remains largely unknown. In the present study, softwood, hardwood, and grass lignocellulose diets were fed to Coptotermes formosanus workers, and structural differences between the original lignocellulose diets and the resulting feces were examined by solution-state multidimensional nuclear magnetic resonance (NMR) techniques as well as by complementary wet-chemical methods. Overall, our data support the view that lignin polymers are partially decomposed during their passage through the termite gut digestive system, although polysaccharide decomposition clearly dominates the overall lignocellulose deconstruction process and the majority of lignin polymers remain intact in the digestive residues. High-resolution NMR structural data suggested preferential removal of syringyl aromatic units in hardwood lignins, but non-acylated guaiacyl units as well as tricin end-units in grass lignins. In addition, our data suggest that termites and/or their gut symbionts may favor degradation of C–C-bonded β–5 and resinol-type β–β lignin inter-monomeric units over degradation of ether-bonded β–O–4 units, which is in contrast to what has been observed in typical lignin biodegradation undertaken by wood-decaying fungi.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer Nature
dc.rights© The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.titleNMR studies on lignocellulose deconstructions in the digestive system of the lower termite Coptotermes formosanus Shiraki
dc.type.niitypeJournal Article
dc.identifier.jtitleScientific reports
dc.identifier.volume8
dc.relation.doi10.1038/s41598-018-19562-0
dc.textversionpublisher
dc.identifier.artnum1290
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University・Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI)
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University・Research Unit for Development and Global Sustainability, Kyoto University
dc.addressResearch Institute for Sustainable Humanosphere (RISH), Kyoto University
dc.identifier.pmid29358744
dc.identifier.kaken16K14958 / 16H06198
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