作物の根に於ける代謝生理(第1報) : 作物の根による有機態燐の無機化について

概要

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Dephosphorylation of organic phosphorus by roots was investigated by suspending excised roots in the test solutions of organic phosphorus compounds. Direct evidence for the dephosphorylation was obtained with plants in sterile condition. For most plants investigated the glycerophosphatase activity was markedly great at the root tips and the region bearing thick root hairs (Fig. 2). This activity was generally highest in the germination period, but fell off rapidly after a short period of growth (Table 4). Among three phosphomonoesterases found on barley and rice plantroots, the activity of glycyrophoshatase was greatest and that of phytase lowest or negligible (Table 3). In all guantitative tests, excised roots were previously sterilized with 0.1% Usplun solution for five minutes (Table 2).
社団法人日本土壌肥料学会の論文
1951-03-30