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https://hdl.handle.net/20.500.14094/90007638
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2024-04-25
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90007638 (fulltext)
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メタデータID
90007638
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open access
出版タイプ
Version of Record
タイトル
Water Adsorption to Leaves of Tall Cryptomeria japonica Tree Analyzed by Infrared Spectroscopy under Relative Humidity Control
著者
Azuma, Wakana A. ; Nakashima, Satoru ; Yamakita, Eri ; Ohta, Tamihisa
著者ID
A2613
研究者ID
1000020780761
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=a622a91d72faf893520e17560c007669
著者名
Azuma, Wakana A.
東, 若菜
アズマ, ワカナ
所属機関名
農学研究科
著者名
Nakashima, Satoru
著者名
Yamakita, Eri
著者名
Ohta, Tamihisa
収録物名
Plants
巻(号)
9(9)
ページ
1107-1107
出版者
MDPI
刊行日
2020-09
公開日
2020-12-02
抄録
Leaf water storage is a complex interaction between live tissue properties (anatomy and physiology) and physicochemical properties of biomolecules and water. How leaves adsorb water molecules based on interactions between biomolecules and water, including hydrogen bonding, challenges our understanding of hydraulic acclimation in tall trees where leaves are exposed to more water stress. Here, we used infrared (IR) microspectroscopy with changing relative humidity (RH) on leaves of tall Cryptomeria japonica trees. OH band areas correlating with water content were larger for treetop (52 m) than for lower-crown (19 m) leaves, regardless of relative humidity (RH). This high water adsorption in treetop leaves was not explained by polysaccharides such as Ca-bridged pectin, but could be attributed to the greater cross-sectional area of the transfusion tissue. In both treetop and lower-crown leaves, the band areas of long (free water: around 3550 cm(-1)) and short (bound water: around 3200 cm(-1)) hydrogen bonding OH components showed similar increases with increasing RH, while the band area of free water was larger at the treetop leaves regardless of RH. Free water molecules with longer H bonds were considered to be adsorbed loosely to hydrophobic CH surfaces of polysaccharides in the leaf-cross sections.
キーワード
water molecules
hydrogen bonding
polysaccharides
Cupressaceae
leaf water storage
カテゴリ
農学研究科
学術雑誌論文
権利
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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資源タイプ
journal article
言語
English (英語)
eISSN
2223-7747
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関連情報
DOI
https://doi.org/10.3390/plants9091107
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