publication . Doctoral thesis . 2008

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

Open Access
  • Published: 21 Apr 2008
  • Country: South Africa
Abstract
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 ...
Subjects
free text keywords: ethylene, sucrose, solanaceae, petunias, cut flowers
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