Journalartikel

Jahr der Veröffentlichung: 1993

Seiten: 143-150

Zeitschrift: Plant Cell, Tissue and Organ Culture

Bandnummer: 33

Heftnummer: 2

ISSN: 0167-6857

Verlag: Springer

Abstract: 

Using photoautotrophic cells of Arachis hypogaea (L.) growing at ambient CO2, it was shown that exogenous sucrose supplied to the liquid medium reduced (CO2)-C-14 fixation (supplied as NaH (CO3)-C-14) . This was mostly due to a reduced labelling in P-esters, and to a lesser extent, in the serine/glycine moiety. However, radioactivity in the neutral sugar fraction was increased upon supplement of exogenous sucrose. The reduced labelling of P-esters and serine/glycine agrees with a lower concentration and specific activity of Rubisco in the sucrose supplied treatments as compared to the control. Following a transfer into a sugar free nutrient medium the concentration and activity of Rubisco is increased. The concentration of PEPCase was not influenced by sucrose application, although its specific activity was increased.

At elevated CO2 concentration (2.34% v/v) the Rubisco concentration and specific activity was at the same level as in the control (0.03% V/V CO2). However, the concentration and the specific activity of PEPCase was increased and dry weight increase was about 8-9-fold higher than at ambient CO2.

Harvard-Zitierstil: GROSS, U., GILLES, F., BENDER, L., BERGHOFER, P. and NEUMANN, K. (1993) THE INFLUENCE OF SUCROSE AND AN ELEVATED CO2 CONCENTRATION ON PHOTOSYNTHESIS OF PHOTOAUTOTROPHIC PEANUT (ARACHIS-HYPOGAEA L) CELL-CULTURES, Plant Cell, Tissue and Organ Culture, 33(2), pp. 143-150

APA-Zitierstil: GROSS, U., GILLES, F., BENDER, L., BERGHOFER, P., & NEUMANN, K. (1993). THE INFLUENCE OF SUCROSE AND AN ELEVATED CO2 CONCENTRATION ON PHOTOSYNTHESIS OF PHOTOAUTOTROPHIC PEANUT (ARACHIS-HYPOGAEA L) CELL-CULTURES. Plant Cell, Tissue and Organ Culture. 33(2), 143-150.