The in vitro simulation of IAA-induced modification of Avena cell wall polysaccharides by an exo-glucanase

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概要

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• Treatment of Avena coloeptile segments with auxin promotes a decrease in the noncellulosic glucose component of the cell walls. The decrease in glucan may be simulated in these cell walls in vitro by an exo-glucanase which produces glucose directly as the sole reaction product. These results also reveal that glucans of Avena cell wall polysaccharides are readily susceptible to exo-enzyme attack. Nojirimycin, a potent inhibitor of β-glucosidases and exo-glucanases, inhibits the enzymatic release of glucose from Avena cell walls in vitro. Since nojirimycin inhibits IAA-induced growth of Avena coleoptiles, the evidence presented supports the hypothesis that IAA-induced growth may be mediated by an exo-glucanase.

• 日本植物生理学会の論文

著者

• Nevins D.

  Department Of Botany And Plant Pathology Iowa State University

関連論文

• The effect of nojirimycin on plant growth and its implications concerning a role for exo-β-glucanases in auxin-induced cell expansion
• The in vitro simulation of IAA-induced modification of Avena cell wall polysaccharides by an exo-glucanase

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