Rumex palustris

Vriezen, W.H., van Rijn, C.P.E., Voesenek, L.A.L.J., Mariani, C. (1997). A homologue of the Arabidopsis thaliana ERS gene is actively regulated in Rumex palustris upon flooding. The Plant Journal 11, 1265-1271. 

The last example deals with submerged Rumex species. A hypoxic atmosphere thus exists in the tissue because gas diffusion is limited in water. In contrast to Rumex acetosuy Rumex palustris shows stimulated shoot elongation in response to submergence paralleled and triggered by drastic enhancement of ethylene concentration. This elongation response is functionally related to the opportunity to reach better illuminated and aerated zones close to the water surface or preferentially above it (Voesenek and van der Veen 1994). Desubmergence of the species displays a first peak in ethylene emission with a subsequent second rise followed by a slow decay (Fig. 10). As discussed by Voesenek et al. (1993), the first peak is due to release of entrapped ethylene. The second rise corresponds to a temporary... 

Fig. 10. Ethylene emission rates from shoots of Rumex palustris before, during and after a submergence period indicated by the shaded bar. Control plants under non-submerged conditions show a constant rate...

Chimaphila umbellata, Dysosma pleiantha, Hypericum triquetrifolium, H. chinensis, Pamassia palustris, Persicaria hydmpiper, Prunus padus, Rumex acetosa, R. acetosella, R. amurensis, R. aquaticus,... 

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