[Setaria viridis tolerance of high zinc concentrations].
The effect of high zinc concentrations on the growth and photosynthetic apparatus of Setaria viridis (L.) Beauv. was investigated under laboratory conditions and a vegetation experiment. The experiments showed that zinc concentrations of 10(-6) to 10(-3) M did not influence seed germination. Moreover, zinc in concentrations of 40 and 80 mg kg(-1) substrate had no significant effect on most of the plant growth parameters. However, higher metal concentrations (160 and 320 mg kg(-1) substrate) inhibited shoot biomass, leaf area, inflorescence length, and biomass. At the same time, parameters such as the content of chlorophyll (a + b), F0, F(v), and the F(v)/F(m) rate were not reduced even in the presence of zinc in the highest concentrations (320 mg kg(-1) substrate). S. viridis tolerance of high zinc concentrations, as well as its capacity to accumulate zinc in roots and shoots, suggests the plant can be used for phytoremediation of zinc polluted soils.
Kaznina
N M
NM
Titov
A F
AF
Laĭdinen
G F
GF
Talanov
A V
AV
D001673:Biodegradation, Environmental; D004305:Dose-Response Relationship, Drug; D004351:Drug Resistance / Q000187:drug effects / Q000502:physiology*; D018525:Germination / Q000187:drug effects / Q000502:physiology; D010788:Photosynthesis / Q000187:drug effects / Q000502:physiology; D018515:Plant Leaves / Q000254:growth & development / Q000378:metabolism; D018520:Plant Shoots / Q000254:growth & development / Q000378:metabolism; D012639:Seeds / Q000254:growth & development / Q000378:metabolism; D032983:Setaria Plant / Q000235:genetics* / Q000254:growth & development; D012989:Soil Pollutants / Q000378:metabolism* / Q000494:pharmacology*; D015032:Zinc / Q000378:metabolism* / Q000494:pharmacology*
D012989:Soil Pollutants; D015032:Zinc