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Nitrogen redistribution during grain growth in wheat (Triticum aestivum L.)

I. Peptide hydrolase activity and protein breakdown in the flag leaf, glumes and stem

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Abstract

The activity of a range of endo- and exopeptidase enzymes have been measured in the glumes, flag leaf and stem during the period of grain development in wheat. The enzymes show a sequential pattern of appearance with activity peaks occurring at a number of intervals from anthesis until just prior to the cessation of grain growth. Of the enzymes studied only the haemoglobin- and casein-degrading activity and alanylglycine-dipeptidase activity increased during the period of rapid protein loss, while aminopeptidase, carboxypeptidase and leucyltyrosine dipeptidase reached maximum activity prior to this period.

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Authors and Affiliations

  1. School of Agriculture and Forestry, University of Melbourne, 3052, Parkville, Vic., Australia

    Stephen P. Waters, Mark B. Peoples, Richard J. Simpson & Michael J. Dalling

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  1. Stephen P. Waters
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  2. Mark B. Peoples
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  3. Richard J. Simpson
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  4. Michael J. Dalling
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Waters, S.P., Peoples, M.B., Simpson, R.J. et al. Nitrogen redistribution during grain growth in wheat (Triticum aestivum L.). Planta 148, 422–428 (1980). https://doi.org/10.1007/BF02395309

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  • DOI: https://doi.org/10.1007/BF02395309

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