scholarly journals Effect of Se-metal pair combinations (Cd, Zn, Cu, Pb) on photosynthetic pigmentsproduction and Metal accumulation in Sinapis alba L. seedlings

2011 ◽  
Vol 52 (No. 1) ◽  
pp. 8-15 ◽  
Author(s):  
A. Fargašová ◽  
J. Pastierová ◽  
K. Svetková

The priority of this study was to investigate how selenium influences toxicity of Cd, Zn, Cu and Pb when the metals appear in the hydroponic solution in pairs. As a model subject mustard seedlings (Sinapis alba L.) were used. Except phytotoxicity of individual metals and Se-metal combinations determined through photosynthetic pigments content (chlorophyll a, b, total carotenoids) also metal accumulation in the roots and shoots was determined by the AAS method. Se in all metal combinations reduced the unfavourable effect of other metals tested for chlorophylls content, however, for carotenoids primarily the opposite effect occurred. For metal accumulation in the roots and shoots it was confirmed that Se stimulated only Cd (about 24%) and slightly Cu (about 9%) accumulation in the roots, while in the shoots there was inhibited accumulation of all metals tested. The strongest inhibition was observed in Pb accumulation (84.9%). This fact indicates that Se generates some barriers for metal transfer from the roots to the underground plant parts. In contrast, Cu, Zn, Pb and Cd increased Se accumulation in the roots in the range of 4 (in combination with Cu) to 68% (in combination with Cd) and in the shoots in the range of 11 (in combination with Pb and Zn) to 44% (in combination with Cd). In the shoots only Cu inhibited Se accumulation (about 67%).

2011 ◽  
Vol 50 (No. 1) ◽  
pp. 33-38 ◽  
Author(s):  
A. Fargašová

The chronic ecotoxicological effects of Cd, Cu, Pb, Se and Zn were determined within this study. Mustard seedlings (Sinapis alba L.) were used as a model subject for the tests. The phytotoxicity was determined through the root growth inhibition and photosynthetic pigments production (chlorophyll a, b, total carotenoids). The metal accumulation in the roots and cotyledons was also determined using the AAS methods. On the basis of IC<sub>50</sub> values and their 95% confidence intervals (CI) for the root elongation of S. alba seedlings, metals can be arranged in the rank order of inhibition as follows: Cu &gt; Se &gt; Cd &gt; Zn &gt;&gt; Pb. When the photosynthetic pigments production was determined, Se demonstrated the lowest inhibitory effect on all pigment types and Pb did the highest. The accumulated amount of metals from hydroponic solution into the roots and cotyledons decreased in the order Cd &gt; Zn &gt; Se &gt; Pb &gt; Cu.


Environments ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 49
Author(s):  
Markéta Šourková ◽  
Dana Adamcová ◽  
Jan Winkler ◽  
Magdalena Daria Vaverková

Illegal dumps and landfills with disposed of tires are a fact of today, which should not be neglected as they represent a great ecological burden for the environment, affect the surrounding nature and disturb the landscape. This research was focused on testing the phytotoxicity of aqueous leachates from the fractions of tires in two sets of experiments—to simulate laboratory conditions (tire leaching in distilled water) and natural conditions (tire leaching in water from a recipient) using the Phytotoxkit testing kit (kit for the establishment of inhibition/stimulation effect on the root development) and the watercress test of phytotoxicity (biological method for the assessment of leachate phytotoxicity). Plants whose seeds were selected for the test were watercress (Lepidium sativum L.) and white mustard (Sinapis alba L.). The aqueous leachate was tested for 38 weeks. During the experiment, physical and chemical parameters were measured at intervals of 14 days by the testing instrument HACH TEST KIT: electric conductivity (EC), amount of dissolved oxygen (LDO) and pH. Results of root growth inhibition (IR) on the seeds of Lepidium sativum L. and Sinapis alba L. exhibited values ranging from 11.73% to 47.74% in the tested samples. Results of germination index (GI) on the seeds of Lepidium sativum L. exhibited values below 66% in the tested samples, which indicated the leachate phytotoxicity. In spite of the fact that similar studies are tackling the acute toxicity of leachates from tires (particularly to algae, embryos and animals), this research brings complementary information in testing the acute phytotoxicity of tire leachates to higher plants.


2019 ◽  
Vol 41 (5) ◽  
Author(s):  
Dorota Sołtys-Kalina ◽  
Zofia Murawska ◽  
Danuta Strzelczyk-Żyta ◽  
Iwona Wasilewicz-Flis ◽  
Waldemar Marczewski

2000 ◽  
Vol 267 (21) ◽  
pp. 6486-6492 ◽  
Author(s):  
Margherita Ruoppolo ◽  
Angela Amoresano ◽  
Piero Pucci ◽  
Stefano Pascarella ◽  
Fabio Polticelli ◽  
...  

1981 ◽  
Vol 181 (4) ◽  
pp. 454-457 ◽  
Author(s):  
Gerhard Link ◽  
Susan E. Chambers ◽  
John A. Thompson ◽  
Heinz Falk

2005 ◽  
Vol 23 (2) ◽  
pp. 146-158 ◽  
Author(s):  
Fruck Dorsainvil ◽  
Carolyne Dürr ◽  
Eric Justes ◽  
Aude Carrera

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