| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2026-01-27 |
| タイトル |
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タイトル |
Negative gravitropism of Gnetum gnemon: the effect of the reaction wood and reaction phloem |
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言語 |
en |
| 著者 |
Shirai, Tatsuya
Muramatsu, Wakana
Yoshida, Masato
Matsuo-Ueda, Miyuki
Hadi, Yusuf Sudo
Marsoem, Sri Nugroho
Yamamoto, Hiroyuki
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| アクセス権 |
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アクセス権 |
embargoed access |
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アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利 |
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|
権利情報 |
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s00226-025-01720-z |
|
言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
Gnetum gnemon (Gnetales) is a woody gymnosperm exhibiting morphological characteristics similar to those of woody angiosperms. This study investigated the mechanism underlying negative gravitropism observed in the inclined stems of G. gnemon at two plantation sites on Java Island, Indonesia. The following results were obtained: On the upper side of the inclined stem of G. gnemon, (1) eccentric growth occurred in both the xylem and the phloem; (2) significant tensile growth stresses were generated on the surfaces of the xylem and the inner phloem; and (3) a small microfibril angle (MFA) along with high cellulose crystallinity were observed in both the xylem and the inner phloem. Furthermore, (4) G-fibers developed predominantly on the upper side of the inclined stem, especially in the inner phloem, while no G-fibers were detected in the xylem. From these results, it can be concluded that reaction wood with a small microfibril angle (MFA) and high cellulose crystallinity in the lignified secondary-wall of the xylem fiber, along with reaction phloem containing G-fiber, generate significant tensile growth stresses on the upper side of the inclined stem of G. gnemon. In other words, although G. gnemon is a gymnosperm, it exhibits negative gravitropism through a mechanism not typical of normal gymnosperms but rather similar to that observed in angiosperms. |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
Version of record: 07 November 2025 |
|
言語 |
en |
| 出版者 |
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出版者 |
SpringerNature |
|
言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1007/s00226-025-01720-z |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0043-7719 |
| 書誌情報 |
en : Wood Science and Technology
巻 60,
p. 2,
発行日 2025-11-07
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| ファイル公開日 |
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日付 |
2026-11-07 |
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日付タイプ |
Available |
Shirai_et_al_2026_for_NU_Repository.pdf (2.7 MB)
