METABOLISM OF ACETATE-1-^<14>C IN EXCISED LEAVES FROM POTASSIUM DEFICIENT RICE SEEDLINGS

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概要

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• Excised leaves from one-month old rice seedlings grown in potassium deficient nutrient solution were fed with acetate-1-^<14>C for 20 to 180min. Rate of respiration of those leaves was significantly higher than that of control leaves supplied with sufficient potassium. Incorporation of ^<14^gt;C, into organic acid and sugar fractions were greater in potassium deficient leaves than in normal leaves. The reverse was true as for the incorporation into amino acid fraction. In comparison with normal leaves, potassium deficient leaves acquired much ^<14>C in succinic acid and glutamine. There were distinct differences in the labeling pattern of citrate and in the order of magnitude of specific activities among the organic acids included in the TCA cycle. From these results, it was assumed that the increase of respiratory rate caused by the potassium deficiency was related to accelerated operation of the TCA cycle. The decreased rate of conversion of organic acids to amino acids and the accumulation of glutamine were also concluded.

• 日本植物生理学会の論文

著者

• FUJIWARA AKIO

  Faculty of Agriculture, Tohoku University

• Fujiwara Akio

  Faculty Of Agriculture Tohoku University

• YAMASHITA TADAAKI

  Faculty of Agriculture, Tohoku University

• Yamashita Tadaaki

  Faculty Of Agriculture Tohoku University

関連論文

• PHOTOINHIBITION OF ELONGATION GROWTH OF ROOTS IN RICE SEEDLINGS
• GLUTAMATE DEHYDROGENASE IN HIGHER PLANTS III. : Existence of NADPH-linked Glutamate Dehydrogenase
• THE DEFICIENCY SYMPTOM OF MICROELEMENTS ON RICE PLANT
• METABOLISM OF ACETATE-1-^C IN EXCISED LEAVES FROM POTASSIUM DEFICIENT RICE SEEDLINGS
• FUNCTION OF CALCIUM IN THE CELL WALL OF RICE LEAVES
• Some further studies on metabolism of acetate-1-^C in potassium deficient rice leaves
• The relation between calcium and cell wall in growing rice leaf
• A SHORT NOTE ON THE MODE OF INCORPORATION OF SULFLTR INTO CELLULAR FRACTIONS OF BARLEY LEAVES
• RESPIRATION AND ORGANIC ACID METABOLISM IN POTASSIUM DEFICIENT RICE PLANT

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