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Biologia Plantarum

, 38:511 | Cite as

Seasonal changes in sugar beet photosynthesis as affected by exogenous cytokininN 6-(m- hydroxybenzyl)adenosine

  • J. ČatskýEmail author
  • J. Pospíšilová
  • M. Kamínek
  • A. Gaudinová
  • J. Pulkrábek
  • J. Zahradníček
Original Paper

Abstract

Foliar sprays withN 6-(m-hydroxybenzytyadenosine, (mOH)-[9R]BAP, one of the synthetic cytokinins, were applied to field-grown sugar beet twice during the vegetation period: before full canopy closing(I), 6 weeks before harvest(II) or both. Application of (mOH)[9R]BAP retained high cytokinin content that usually declines prior to harvest. The total content of isoprenoid cytokinins at harvest was 2.6-fold higher in (mOH)[9R]BAP-treated plants as compared to the controls. TreatmentI had no significant effect on contents of chlorophylls (Chl)a andb and carotenoids, nor on the rates of net photosynthesis (PN) or photorespiration (Rl), or on CO2 compensation concentration (Γ) measured during the whole vegetation period on detached leaves under optimum environmental conditions. Increased values in PN, RL and Chla andb contents were found in variantsII and I+II linked with a delay in leaf senescence before harvest. Transpiration rate and stomatal conductances of adaxial and abaxial epidermes were not significantly affected by any treatment.

Keywords

Sugar Beet Stomatal Conductance Endogenous Cytokinin Zeatin Riboside Sugar Beet Plant 
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.

References

  1. Arnon, D. I.: Copper enzymes in isolated chloroplasts. Polyphenoloxidase inBeta vulgaris. - Plant Physiol.24: 1–15, 1949.PubMedGoogle Scholar
  2. Čatský, J., Šesták, Z.: Photosynthesis during leaf development. - In: Pessarakli, M. (ed.): Handbook of Photosynthesis. Pp. 633–660. Marcel Dekker, New York 1996.Google Scholar
  3. Čatský, J., Tichá, I.: A closed system for measurement of photosynthesis, photorespiration and transpiration rates. - Biol. Plant.17: 405–410, 1975.Google Scholar
  4. Chernyadev, I. I., Chvojka, L., A., Volfová, A., Březinová, A.: Photosynthesis in sugar beet leaves under the influence of cytokinins and triazine herbicides. - Photosynthetica20:196–203, 1986.Google Scholar
  5. Kamínek, M.: Progress in cytokinin research. - Trends Biotechnol.10: 159–164, 1992.CrossRefGoogle Scholar
  6. Kamínek, M., Vaněk, T., Motyka, V.: Cytokinin activities of N6-benzyladenosine derivatives hydroxylated on the side-chain phenyl ring. - J. Plant Growth Regul.6: 113–120, 1987.CrossRefGoogle Scholar
  7. Kaše, M., Čatský, J.: Calculator-assisted measurements of photosynthetic, respiration and photorespiration rates in a closed gas exchange system. - Biol. Plant.25: 139–146, 1983.Google Scholar
  8. Kotyk, A., Kamínek, M., Pulkrábek, J., Zahradníček, J.: Effect ofin vivo andin vitro application of the cytokinin N6-(m-hydroxybenzyl)adenosine on respiration and membrane transport processes in sugar beet.- Biol. Plant.38: 363–368, 1996.Google Scholar
  9. Kuraishi, S., Sakurai, N., Tazaki, K., Sadatoku, K.: A possible relationship between chlorophyll synthesis and endogenous cytokinin levels in whole seedlings and excised cotyledons of squash. - In: Kamínek, M., Mok, D. W. S., Zažímalová, E. (ed.): Physiology and Biochemistry of Cytokinins in Plants. Pp. 283–288. SPB Academic Publishing, The Hague 1992.Google Scholar
  10. Lichtenthaler, H. K.: Chlorophylls and carotenoids - pigments of photosynthetic biomembranes. - In: Colowick, S. P., Kaplan, N. O. (ed.): Methods in Enzymology. Vol. 148. Pp. 350–382. Academic Press, San Diego - New York - Berkeley -Boston - London - Sydney - Tokyo - Toronto 1987.Google Scholar
  11. Luštinec, J., Kamínek, M., Beneš, K., Conrad, K.: Hormone-like effect of vascular tissue on starch accumulation in stem expiants of kale,Brassica oleracea. - Physiol. Plant.61: 224–230, 1984.CrossRefGoogle Scholar
  12. Morris, R. O., Akiyoshi, D. E., MacDonald, E. M. S., Morris, J. W., Regier, D. A., Zaerr, J. B.: Cytokinin metabolism in relation to tumor induction inAgrobacterium tumefaciens. - In: Wareing, P. F. (ed.): Plant Growth Substances. Pp. 167–178. Academic Press, London 1982.Google Scholar
  13. Musgrave, M. E.: Cytokinins and oxidative processes. - In: Mok, D. W. S., Mok, M. C. (ed.): Cytokinins- Chemistry, Activity and Function. Pp. 167–178. CRC Press, Boca Raton 1994.Google Scholar
  14. Pulkrábek, J.: [Application of foliar fertilizer and growth regulator on sugar beet.] - Agrochemie30: 338–341, 1990. [In Czech.]Google Scholar
  15. Pulkrábek, J.: [Possibilities of affecting yield formation in sugar beet with biologically active substances.] - Rost. Výroba (Praha)41: 389–392, 1995. [In Czech.]Google Scholar
  16. Šesták, Z. (ed.): Photosynthesis During Leaf Development. - Academia, Praha; Dr.W.Junk Publ., Dordrecht -Boston - Lancaster 1985.Google Scholar
  17. Soejima, H., Sugiyama, T., Ishihara, K.: Changes in cytokinin activities and mass spectrometric analysis of cytokinins in root exudates of rice plant (Oryza sativa L.). Comparison between cultivare Nipponbare and Akenohoshi. - Plant Physiol.100: 1724–1729, 1992.PubMedCrossRefGoogle Scholar
  18. Synková, H., Wilhelmová, N., Šesták, Z., Pospíšilová, J.: Photosynthesis in transgenic plants with elevated cytokinin contents. - In: Pessarakli, M. (ed.): Handbook of Photosynthesis. In press. Marcel Dekker, New York 1996.Google Scholar
  19. Vaňková, R., Kamínek, M., Eder, J., Vaněk, T.: Dynamics of production oftrans-zeatin andtrans-zeatin riboside by immobilized cytokinin-autonomous and cytokinin-dependent tobacco cells. - Plant Growth Regul.6: 146–157, 1987.Google Scholar
  20. Vaňková, R., Hsiato, Ke, C., Bornman, C. H., Gaudinová, A.: Effects of synthetic cytokinins on levels of endogenous cytokinins and respiration patterns ofBeta vulgaris cells in suspension. - J. Plant Growth Regul.10: 197–199, 1991.Google Scholar
  21. Wilhelmová, N., Kutík, J.: Influence of exogenously applied 6-benzylaminopurine on the structure of chloroplasts and arrangement of their membranes. - Photosynthetica31: 559–570, 1995.Google Scholar
  22. Zahradníček, J., Koubová, J., Folbergerová, Z., Pulkrábek, J., Šroller, J., Švachula, V., Čatský, J., Kamínek, M., Pospíšilová, J., Kotyk, A.: [The effect of cytokinins and other growth regulators on the yield, technological quality and metabolism of sugar beet.] - Listy cukrovar. řepař. (Praha)111:229–235, 1995. [In Czech.]Google Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • J. Čatský
    • 1
    Email author
  • J. Pospíšilová
  • M. Kamínek
    • 2
  • A. Gaudinová
  • J. Pulkrábek
    • 3
  • J. Zahradníček
    • 4
  1. 1.Institute of Experimental BotanyAcademy of Sciences of the Czech RepublicPrague 6Czech Republic
  2. 2.Institute of Experimental Botany, Academy of Sciences of the Czech RepublicDe Montfort University, Norman Borlaug Centre for Plant SciencePrague 6Czech Republic
  3. 3.Czech Agricultural UniversityPrague 6Czech Republic
  4. 4.VUC Praha, a.s.Prague 4Czech Republic

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