Further studies on the role of cell-wall-degrading enzymes in cell-wall loosening in oat coleoptiles |
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Authors: | MASUDA YOSHIO; OI SUSUMU; SATOMURA YUKIO |
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Institution: | Department of Biology, Faculty of Science, Osaka City University Sumiyoshi-ku, Osaka, Japan |
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Abstract: | A fungal endo-ß-l,3-glucanase was compared with afungal exo-ß-1,3-glucanase with respect to their effectson elongation and cell-wall extensibility in oat coleoptilesegments. The exo-enzyme enhanced elongation and extensibilityof the cell wall. Its effect was not additive to the effectof indole-3-acetic acid when given together with the latter,at least during 3 hr of incubation. Endo-glucanase showed nosignificant effect on elongation and no interaction with theexo-enzyme. Auxin and exo-glucanase increased extensibilityof the cell wall. The exo-glucanase was separated by isoelectricfocusing. The two fractions which were separated and showedglucanase activity induced elongation and cell wall loosening. (Received March 16, 1970; ) |
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