Seasonal dynamics of phenolic substances from the macrophyte Myriophyllum aquaticum and their allelopathic effects on the growth and reproduction of Plationus patulus (Rotifera: Brachionidae)

How Eutrophication Promotes Exotic Aquatic Plant Invasion in the Lake Littoral Zone?

“…We found that the SOD activity of native species was significantly higher when they were planted together with M. aquaticum than with A. philoxeroides, probably because M. aquaticum releases large amounts of phenolics that interfere with the growth of the surrounding native plants. 41 Previous studies have also found that phenolics released by M. aquaticum adversely affect the growth and reproduction of the rotifer Platingus patulus. 41 Thus, the growth and spread of M. aquaticum in eutrophic waters can cause degradation of species richness and notable alterations of the structural composition of species in the littoral zone.…”

“…41 Previous studies have also found that phenolics released by M. aquaticum adversely affect the growth and reproduction of the rotifer Platingus patulus. 41 Thus, the growth and spread of M. aquaticum in eutrophic waters can cause degradation of species richness and notable alterations of the structural composition of species in the littoral zone.…”

“…philoxeroides, probably because M. aquaticum releases large amounts of phenolics that interfere with the growth of the surrounding native plants . Previous studies have also found that phenolics released by M.…”

“…In general, there is a trade-off between competition and tolerance in plants. , Invasive plants are highly competitive, with high capacity for resource acquisition, uptake and assimilation, and rapid relative growth rates (RGR), allowing them to rapidly occupy vacant ecological niches. ,, In contrast, environmentally tolerant plants have low photosynthetic and respiration rates, slow RGR, and large carbon reserves, and they have high tolerance to environmental stress. ,, Thus, biomass and RGR respond to the plant growth rate, while the ramet number and plant height can reflect the ability of plants to expand spatially, and these four traits can be used to predict the competitive ability of plants. , In addition, carbohydrate reserves, such as starch, are key traits for plant maintenance and growth in stressful environments. ,, Phenolics give the plants the ability to withstand external animal feeding, cold weather, and drought events. − Thus, starch and phenolics can be used to address the ability of plants to tolerate external disturbances. Although the high competitive ability of invasive plants is widely recognized, ,, two issues remain unclear: (1) how the trade-off between competition and tolerance of invasive and native plants responds to eutrophication in the littoral zone, and (2) what the implications of this trade-off are for plant invasion of the littoral zone.…”

Preface: advances in the ecology of shallow lakes

“…Another way by which macrophytes may affect other organisms is by releasing substances in the water. Viveros-Legorreta et al ( 2022 ) studied the impact of phenolic compounds released by an aquatic macrophyte on the survival and reproduction of a rotifer species. They found that macrophyte phenolic compounds influenced the survival and reproduction of rotifers, but the effect depended on the other chemicals released into the medium.…”