publication . Doctoral thesis . 2008

The effect of ethylene on sucrose-uptake by senescing petunia flowers.

Open Access
  • Published: 21 Apr 2008
  • Country: South Africa
The influence of sucrose as an important factor in the vase-life of cut flowers has been dually noted. Sucrose is actively transported across the cell membrane via a symport system and the membrane-imbedded ATPase enzyme generates the required energy and proton gradient for the process. The activity of this enzyme decreases during the senescence of Petunia petals, concomitant with a decrease in sucrose-uptake in the post-climacteric phase. However, ATP does not appear to be limiting, indicating that a change in proton gradients may be responsible for this phenomenon. In order to study the uptake of sucrose in Petunia corollas various inhibitors of ATPase enzyme ...
free text keywords: ethylene, sucrose, solanaceae, petunias, cut flowers
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