Expression of Sucrose Synthase Genes Involved in Enhanced Elongation of Pondweed (Potamogeton distinctus) Turions under Anoxia

Abstract

Up-regulation of PdSUS1 transcription under anoxia may not be attributed to sugar starvation under anoxia. A positive correlation between stem elongation and the level of PdSUS1 transcripts was observed in turions treated with anoxic conditions, 2,4-D and sorbitol. The increase in SuSy activity in the cytosol may contribute to sugar metabolism and sustain stem elongation under anoxia.