%0 Journal Article
%T Impact of heterophylly on the sensitivity of Myriophyllum aquaticum biotests
%A Klaus Peter Ebke
%A Christian Felten and L¨¢szl¨® D ren
%J Environmental Sciences Europe
%D 2013
%I BioMed Central
%R 10.1186/2190-4715-25-6
%X The heterophylly of M. aquaticum affects significantly the sensitivity of aquatic macrophyte biotests and should be taken into account in the development of a standardized test design. The 2,4-D results show the importance of an additional macrophyte biotest to the Lemna test, where the no observed effect concentration (NOEC) value is more than 30 times lower (7 ¦Ìg/L) than the NOEC value of Lemna in the literature (270 ¦Ìg/L). Furthermore, the growth rate endpoint in macrophyte biotests should not be misinterpreted. Rapid shoot elongation of amphibious macrophytes, which become submerged, is mainly caused by ethylene-triggered endogenous processes that are not connected to photosynthetic carbon assimilation and appear to be part of a stress reaction to avoid adverse environmental conditions.
%K Macrophyte biotests
%K Myriophyllum aquaticum
%K Heterophylly
%K Quantum yield of PSII
%K Atrazine
%K 2
%K 4-D
%K Ethylene-induced shoot elongation
%U http://www.enveurope.com/content/25/1/6/abstract