Role of hydroxyproline-rich cell wall protein in growth regulation of rice colcoptiles grown on or under water
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概要
- 論文の詳細を見る
The elongation of both intact and excised rice coleoptiles was promoted when they were submerged in water. Amino acid analysis of the cell wall revealed that air-type coleoptiles (grown on the surface of water) contained more hydroxyproline than water-type ones (grown under water). The suppression of hydroxylation of peptidyl proline under water was confirmed with air-type sections by examining the imino acid content, ^<14>C-proline incorporation into the cell wall and its modification by α,α'-dipyridyl. Also, dipyridyl significantly promoted the growth of floated sections to the level of submerged sections. Therefore, the lower hydroxyproline content caused by lower oxygen tension in water is concluded to be one of the factors promoting growth of rice coleoptiles under water. However, the hydroxyproline content in the cell wall de-creased with growth of both air- and water-type coleoptiles; thus hydroxyproline-rich cell wall protein can not be regarded as the final growth cessation factor in rice coleoptiles.
- 日本植物生理学会の論文
著者
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Hoson Takayuki
Biologrcal Instrtute Faculty Of Scrence Tohoku University
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Wada Shunji
Biology Laboratory, Kyoritsu Women's University
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Wada Shunji
Biological Inslitute Faculty Of Science Tohoku University
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Wada Shunji
Biologrcal Instrtute Faculty Of Scrence Tohoku University
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