Changes in nitrogen contents and in proteolytic activities in different parts of field-grown wheat ears (Triticum aestivum L.) during maturation

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概要

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• Aminopeptidase, carboxypeptidase and neutral endopeptidase activities were analyzed in glumes and in kernels of field-grown wheat (Triticum aestivum L.) during ear development. Kernels harvested on two dates were subdivided into outer pericarp, cross cells, endosperm and embryo. In developing parts with a net nitrogen influx (young glumes, embryo, endosperm) the aminopeptidase activity is high, but in nitrogen-mobilizing tissues (senescing glumes, outer pericarp) this activity decreases. Carboxypeptidase is most active in fully expanded tissues. Neutral endopeptidase shows the highest activity in the nitrogen mobilizing parts and extremely low activity in the embryo and the endosperm.

• 日本植物生理学会の論文

著者

• Feller Urs

  Pflanzenphysiologisches Institut Universitat Bern

• Feller Urs

  Pflanzenphysiologisches Institute Universitat Bern

関連論文

• In Vitro Stability and Inactivation of Peptide Hydrolases Extracted from Phaseolus vulgaris L.
• Changes in nitrogen contents and in proteolytic activities in different parts of field-grown wheat ears (Triticum aestivum L.) during maturation
• Effect of changed source / sink relations on proteolytic activities and on nitrogen mobilization in field-grown wheat (Triticum aestivum L.)

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