Auxin-Induced Changes in the Molecular Weight Distribution of Cell Wall Xyloglucans in A vena Coleoptiles
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概要
- 論文の詳細を見る
The effect of auxin on the molecular weight (Mw) distribution of cell wall xyloglucan was investigated by gel permeation chromatography using coleoptile segments of Avena sativa L. cv. Victory, and the following results were obtained. (1) The water-insoluble hemicellulose (HC-A) mainly consisted of xyloglucans. Iodine staining method revealed that relatively large amounts of xyloglucans were present in the water-soluble hemicellulose (HC-B) and water-soluble polysaccharide (WS) fractions. (2) IAA did not cause remarkable changes in xyloglucan contents in the hemicellulose, but significantly increased the xyloglucan content in the WS fraction. (3) IAA substantially decreased the weight-average Mw of HC-A. This effect became apparent within 30 min of the incubation period, and was not affected by the 0.15 M mannitol or 2% sucrose applied. Hydrogen ions also caused a decrease in the weight-average Mw of HC-A; its effect being reversible. (4) Neither IAA nor hydrogen ions caused any remarkable changes in the weight-average Mw of water-soluble xyloglucans in the HC-B. These results suggest that cell wall xyloglucans have an important role in auxin-induced cell wall loosening in oat coleoptile cells.
- 日本植物生理学会の論文
著者
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Yamamoto Ryoichi
Department Of Chemical Engineering Kyoto University:crest Japan Sience And Technology Agency
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Masuda Yoshio
Department of Biology, Faculty of Science, Osaka University
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Inouhe Masahiro
Department of Biology, Faculty of Science, Ehime University
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Inouhe M
Osaka City Univ. Osaka Jpn
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Inouhe Masahiro
Department Of Biology And Earth Sciences Faculty Of Science Ehime University
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Yamamoto R
Tezukayama Coll. Nara Jpn
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Yamamoto Ryoichi
Department Of Biology Faculty Of Science Osaka City University
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Masuda Y
Hiroshima Univ. Higashi‐hiroshima Jpn
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Masuda Yoshio
Department Of Biology Faculty Of Science Osaka City University
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Masuda Yoshio
Department Of Biology Facully Of Science Osaka City University
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