Effect of Auxin on Autolysis of Cell Walls in Azuki Bean Epicotyls
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概要
- 論文の詳細を見る
Native cell walls of azuki bean epicotyls incubated in buffer autolytically released neutral sugars, abundant in galactose, and uronic acids. Treatment with 10^<-5>M IAA of subapical or basal epicotyl segments for 3 h did not influence the amount of total neutral sugars released from the cell walls during autolysis. However, the amount of glucose and xylose released from subapical cell walls was increased by IAA. Pretreatment with IAA of subapical epicotyl segments enhanced the solubilization of neutral sugars from pectinase-treated cell walls during incubation in buffer at pH 5 to 6. The amount of fucose, xylose, and glucose released was specifically increased by IAA. Of the sugar fractions released from pectinase-treated cell walls during autolysis and subsequently separated by gel filtration on a Toyopearl HW-40S column, IAA promoted the release of oligosaccharides, consisting mainly of glucose and xylose. These results suggest that autolytic degradation of xyloglucans is closely related to IAA-induced growth of azuki bean epicotyls.
- 日本植物生理学会の論文
著者
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HOSON Takayuki
Department of Biology, Faculty of Science, Osaka City University
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Hoson Takayuki
Department Of Biological Sciences Graduate School Of Science Osaka City University
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Hoson Takayuki
Department Of Biology Faculty Of Science Osaka City University
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