Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Proteolytic Enzyme Control in Squash Cotyledons

Abstract

THE formation of α-amylase in the endosperms of germinating barley seeds is controlled by endogenous gibberellic acid from the axial tissue1. Increases of soluble nitrogen in excised barley endosperms have resulted from the addition of gibberellic acid1–3. This communication shows that the proteolytic activity in seedlings, where the stored protein is in the cotyledons rather than in the endosperm, is influenced by growth regulators.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Paleg, L. G., Sparrow, D. H. B., and Jennings, A., Plant Physiol., 37, 579 (1962).

    Article  CAS  Google Scholar 

  2. Paleg, L. G., Plant Physiol., 36, 829 (1961).

    Article  CAS  Google Scholar 

  3. Yomo, J., Hakko Kyokaishi, 19, 284 (1961).

    CAS  Google Scholar 

  4. Kunitz, M. J., Gens. Physiol., 30, 291 (1947).

    Article  CAS  Google Scholar 

  5. Anson, M. L., J. Gen. Physiol., 22, 79 (1938).

    Article  CAS  Google Scholar 

  6. Varner, J. E., Plant Physiol., 39, 413 (1964).

    Article  CAS  Google Scholar 

  7. Varner, J. E., and Chandra, G. R., Proc. U.S. Nat. Acad. Sci., 52, 100 (1964).

    Article  ADS  CAS  Google Scholar 

  8. Yarmolinsky, M. B., and de la Haba, G. L., Proc. U.S. Nat. Acad. Sci., 45, 1721 (1959).

    Article  ADS  CAS  Google Scholar 

  9. Reich, E., Franklin, R. M., Shatkin, A. J., and Tatum, E. C., Science, 134, 556 (1961).

    Article  ADS  CAS  Google Scholar 

  10. Marcus, A., and Feeley, J., Proc. U.S. Nat. Acad. Sci., 51, 1075 (1964).

    Article  ADS  CAS  Google Scholar 

  11. Sugiura, M., Umemura, K., and Oota, Y., Physiol. Plant., 15, 457 (1962).

    Article  CAS  Google Scholar 

  12. Steinhart, C. E., Mann, J. D., and Mudd, S. H., Plant Physiol., 39, 1030 (1964).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

PENNER, D., ASHTON, F. Proteolytic Enzyme Control in Squash Cotyledons. Nature 212, 935–936 (1966). https://doi.org/10.1038/212935b0

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1038/212935b0

This article is cited by

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing