Hormonal Regulation of Leaf Senescence in Intact Plants

  • R. A. Fletcher
  • N. O. Adedipe


Decreasesin the levels of chlorophyll, protein and RNA are the prominent symptoms of leaf senescence. In detached leaves or leaf discs these symptoms can be delayed by the application of growth substances, including cytokinins (Richmond and Lang, 1957; Letham, 1967), auxins (Osborne and Hallaway, 1964), or gibberellins (Fletcher and Osborne, 1966; Beevers, 1966). The effectiveness of any one or combinations of these compounds is dependent on species and age of the leaf. Senescence of Taraxacum (Fletcher and Osborne, 1966) and nasturtium (Beevers, 1966) leaves can be delayed with application of GA or cytokinins and it has been shown that the senescence of these leaves is associated with an endogenous deficiency of these hormones (Fletcher et al., 1969; Chin and Beevers, 1970).


Leaf Senescence Bean Plant Intact Plant Primary Leaf Plant Growth Substance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. ADEDIPE, N.O. and R.A. FLETCHER (1970a). Benzyladenine-directed transport of Carbon-14 and Phosphorus-32 in senescinq bean plants. J. exp. Bot. 21, 968–974.CrossRefGoogle Scholar
  2. ADEDIPE, N.O. and R.A. FLETCHER (1970b). Retardation of bean leaf senescence by benzyladenine and its influence on phosphate metabolism. Plant Physiol. 46, 614–617.PubMedCrossRefGoogle Scholar
  3. ADEDIPE, N.O. and R.A. FLETCHER (1971). Retardation of leaf senescence by benzyladenine in bean plants is not dependent on mobilization. Can. J. Bot. 49, 59–61.CrossRefGoogle Scholar
  4. ADEDIPE, N.O., L.A. HUNT and R.A. FLETCHER (1971). Effects of benzyladenine on photosynthesis and growth in relation to retardation of bean leaf senescence. Physiol. Plant 25, 151–153.CrossRefGoogle Scholar
  5. BEEVERS, L. (1966). Effects of gibberellic acid on the senescence of leaf discs of Nasturtium (Tropaeolum majus). Plant Physiol. 41, 1074–1076.PubMedCrossRefGoogle Scholar
  6. CARR, D.J. and J.S. PATE (1967). Ageing in the whole plant, in “Aspects of the Biology of Ageing” (ed. H.W. Woolhouse), pp. 559–599. Cambridge University Press.Google Scholar
  7. CHIN, T.-Y. and L. BEEVERS (1970). Changes in endogenous growth regulators in Nasturtium leaves during senescence. Planta (Berl.) 92, 178–188.CrossRefGoogle Scholar
  8. ENGELBRECHT, L. (1964). Über Kinetinwirkungen bei intakten Blättern von Nicotiana rustica. Flora (Jena) 154, 57–69.Google Scholar
  9. FLETCHER, R.A. (1969). Retardation of leaf senescence by benzyladenine in intact bean plants. Planta (Berl.) 89, 1–8.CrossRefGoogle Scholar
  10. FLETCHER, R.A., G. HOFSTRA and N.O. ADEDIPE (1970). Effects of benzyladenine on bean leaf senescence and the translocation of 14c-assimilates. Physiol. Plant. 23, 1144–1148.CrossRefGoogle Scholar
  11. FLETCHER, R.A., T. OEGEMA and R.F. HORTON (1969). Endogenous gibberellin levels and senescence in Taraxacum officinale. Planta (Berl.) 86, 98–102.CrossRefGoogle Scholar
  12. FLETCHER, R.A. and D.J. OSBORNE (1966). Gibberellin, as a regulator of protein ribonucleic acid synthesis during senescence in leaf cells of Taraxacum officinale. Can. J. Bot. 44, 739–745.CrossRefGoogle Scholar
  13. GUNNING, B.E.S. and W.K. BARKLEY (1963). Kinetin-induced directed transport and senescence in detached oat leaves. Nature 199, 262–265.CrossRefGoogle Scholar
  14. HOFSTRA, G. and C.D. NELSON (1969). A comparative study of translocation of assimilated 14c from leaves of different species. Planta (Berl.) 88, 103–112.CrossRefGoogle Scholar
  15. JACOBY, B. and J. DAGAN (1970). Effects of 6N-benzyladenine on primary leaves of intact bean plants and on their sodium absorption capacity. Physiol. Plant. 23, 397–403.CrossRefGoogle Scholar
  16. KHYM, J.X. and W.E. COHN (1953). The separation of sugar phosphates by ion exchange with the use of the borate complex. J. Amer. Chem. Soc. 75, 1153–1156.CrossRefGoogle Scholar
  17. KHYM, J.X. and L.P. ZILL (1952). The separation of sugars by ion exchange. J. Amer. Chem. Soc. 74, 2090–2094.CrossRefGoogle Scholar
  18. LETHAM, D.S. (1967). Chemistry and physiology of kinetin-like compounds. Annu. Rev. Plant Physiol. 18, 349–364.CrossRefGoogle Scholar
  19. MACLEAN, D.C. and R.R. DEDOLPH (1964). Phytokinins and senescence in Broccoli. Amer. J. Bot. 51, 618–621.CrossRefGoogle Scholar
  20. MCCREADY, R.M., J. GUGGOLZ, V. SILVIERA and H.S. OWENS (1950). Determination of starch and amylase in vegetables. Analyt. Chem. 22, 1156–1158.CrossRefGoogle Scholar
  21. MCHALE, J.S. and L.D. DOVE (1968). Mobilization independent effects of a cytokinin on senescing tomato leaves. Naturwiss. 55, 1–2.CrossRefGoogle Scholar
  22. MEIDNER, H. (1967). The effect of kinetin on stomatal opening and the rate of intake of carbon dioxide in mature primary leaves of barley. J. exp. Bot. 18, 556–561.CrossRefGoogle Scholar
  23. MOTHES, K. (1963). The role of kinetin in plant regulation, in “Régulateurs Naturels de la Croissance Végétale”, 5th Intnl. Conf. on Plant Growth Substances, Gifsur-Yvette, C.N.R.S., Paris.Google Scholar
  24. MOTHES, K. and L. ENGELBRECHT (1961). Kinetin-induced directed transport of substances in excised leaves in the dark. Phytochem. 1, 58–62.CrossRefGoogle Scholar
  25. MULLER, K. and A.C. LEOPOLD (1966). Correlative ageing and transport of 32P in corn leaves under the influence of kinetin. Planta (Berl.) 68, 167–185.CrossRefGoogle Scholar
  26. OSBORNE, D.J. (1962). Effect of kinetin on protein and nucleic acid metabolism in Xanthium leaves during senescence. Plant Physiol. 37, 595–602.PubMedCrossRefGoogle Scholar
  27. OSBORNE, DJ. and H.M. HALLAWAY (1964). The auxin, 2,4-dichlorophenoxyacetic acid as a regulator of protein synthesis and senescence in detached leaves of Prunus. New Phytol. 63, 334–337.CrossRefGoogle Scholar
  28. RESNIK, M.E. and E.R. MONTALDI (1968). Kinetin effects on phosphorus uptake and translocation in plants: Phaseolus vulgaris cv. Bountiful. Biol. Prod. Veg. 5, 99–111.Google Scholar
  29. RICHMOND, A.E. and A. LANG (1957). Effect of kinetin on protein content and survival of detached Xanthium leaves. Sci. 125, 650–651.CrossRefGoogle Scholar
  30. SCOTT, R.W.,W.E. MOORE, M.J. EFFLAND and M.A. MILLET (1967). Ultraviolet spectrophotometric determination of hexoses, pentoses and uronic acids after their reactions with concentrated sulfuric acid. Analyt. Biochem. 21, 68–80.PubMedCrossRefGoogle Scholar
  31. SETH, A.K. and P.F. WAREING (1967). Hormone-directed transport of metabolites and its role in plant senescence. J. exp. Bot. 18, 65–77.CrossRefGoogle Scholar
  32. SITTON, D., C. ITAI and H. KENDE (1967). Decreased cytokinin production in the roots as a factor in shoot senescence. Planta (Berl.) 73, 296–300.CrossRefGoogle Scholar
  33. SKOOG, F. and D.J. ARMSTRONG (1970). Cytokinins. Annu. Rev. Plant Physiol. 21, 359–384.CrossRefGoogle Scholar
  34. TAVARES, J. and H. KENDE (1970). The effect of 6-benzylaminopurine on protein metabolism in senescing corn leaves. Phytochem. 9, 1763–1770.CrossRefGoogle Scholar
  35. WAREING, P.F. and A.K. SETH (1967). Ageing and senescence in the whole plant, in “Aspects of the Biology of Ageing” (ed. H.W. Woolhouse) pp. 543–558. Cambridge University Press.Google Scholar
  36. WEBB, J.A. (1970). The translocation of sugars in Cucurbita melopepo. V. The effect of leaf blade temperature on assimilation and transport. Can. J. Bot. 48, 935–942.CrossRefGoogle Scholar
  37. WOLLGIEHN, R. (1967). Nucleic acid and protein metabolism of excised leaves, in “Aspects of the Biology of Ageing” (ed. H.W. Woolhouse) pp. 231–246. Cambridge University Press.Google Scholar
  38. WOOLHOUSE, H.W. (1967). The nature of senescence in plants, in “Aspects of the Biology of Ageing” (ed. H.W. Woolhouse) pp. 179–213. Cambridge University Press.Google Scholar

Copyright information

© Springer-Verlag Berlin · Heidelberg 1972

Authors and Affiliations

  • R. A. Fletcher
    • 1
  • N. O. Adedipe
    • 1
  1. 1.Department of BotanyUniversity of GuelphGuelphCanada

Personalised recommendations