caa a22 4500 469106492 CHVBK 20180323133058.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00044046 doi (NATIONALLICENCE)springer-10.1007/BF00044046 Applications of the aquatic higher plant Lemna gibba for ecotoxicological assessment [Elektronische Daten] [Bruce Greenberg, Xino-Dong Huang, D. Dixon] Although higher plants represent a significant portion of the total biomass in some aquatic environments, their use in ecosystem evaluation has lagged behind that of other organisms. This is partly due to a lack of convenient aquatic higher plant systems that can be employed for ecotoxicological assessment. However, the aquatic C-3 monocot Lemna gibba has many attributes that makes it useful for ecosystem health assessment. In this report, using examples from the literature and our research, some of the applications Lemna has for environmental research are discussed. Toxicant impacts on Lemna can be readily assessed in terms of growth; the plants multiply quickly and changes in biomass (which doubles approximately every 2 days) can be accurately measured by counting leaves. The plants are small, allowing for simultaneous multiple replication. The small size also makes the lighting conditions easy to control; sunlight can be accurately simulated and specific spectral regions can be enhanced or deleted. Lemna is amenable to in vitro chlorophyll and photosynthesis assays, which make excellent companion endpoints for growth. The plants assimilate chemicals directly from the growth medium, facilitating controlled toxicant application. Furthermore, Lemna has a high bioconcentration capacity, indicating a potential for use in bioremediation technologies. Kluwer Academic Publishers, 1992 toxicology nationallicence photochemical activation nationallicence bioconcentration nationallicence food chain nationallicence duckweed nationallicence anthracene nationallicence Greenberg Bruce Department of Biology, University of Waterloo, N2L 3G1, Waterloo, ONT, Canada aut Huang Xino-Dong Department of Biology, University of Waterloo, N2L 3G1, Waterloo, ONT, Canada aut Dixon D. Department of Biology, University of Waterloo, N2L 3G1, Waterloo, ONT, Canada aut Journal of Aquatic Ecosystem Health Kluwer Academic Publishers 1/2(1992-06-01), 147-155 0925-1014 1:2<147 1992 1 10813 https://doi.org/10.1007/BF00044046 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00044046 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Greenberg Bruce Department of Biology, University of Waterloo, N2L 3G1, Waterloo, ONT, Canada aut NATIONALLICENCE 700 1- Huang Xino-Dong Department of Biology, University of Waterloo, N2L 3G1, Waterloo, ONT, Canada aut NATIONALLICENCE 700 1- Dixon D. Department of Biology, University of Waterloo, N2L 3G1, Waterloo, ONT, Canada aut NATIONALLICENCE 773 0- Journal of Aquatic Ecosystem Health Kluwer Academic Publishers 1/2(1992-06-01), 147-155 0925-1014 1:2<147 1992 1 10813 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer