Toxic effects of nanoparticles on bioluminescence activity, seed germination, and gene mutation

2013 ◽  
Vol 98 (7) ◽  
pp. 3295-3303 ◽  
Author(s):  
Kyung-Seok Ko ◽  
In Chul Kong
Keyword(s):  
Seed Germination ◽  
Gene Mutation ◽  
Toxic Effects

scholarly journals Toxicity Studies of Ametryne to Land and Aquatic Organisms

2017 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Ana Paula Justiniano Régo ◽  
Ederio Dino Bidoia ◽  
Cassiana Maria Reganhan-Coneglian
Keyword(s):  
Seed Germination ◽  
Root Growth ◽  
Test Organism ◽  
Aquatic Organisms ◽  
Terrestrial Ecosystems ◽  
Toxic Effects ◽  
Eruca Sativa ◽  
Daphnia Similis ◽  
Low Concentrations ◽  
Bodies Of Water

The ametryne herbicide is largely used on sugar cane plantation in Brazil. It is persistent in the environment and can be found in bodies of water, impacting the aquatic and terrestrial ecosystems. Generally, in crops are applied mixtures of herbicides in order to obtain a higher success in combating weeds. This study evaluated the toxicity only of ametryne herbicide, without mixture with other herbicides, in order to quantify only the degree of dangerousness. This work evaluated the toxicity of ametryne to one aquatic test organism (Daphnia similis) and two land test organism (Eruca sativa and Lactuca sativa). Immobility of D. similis was evaluated in the presence of ametryne. Influences of ametryne on seed germination and root growth of E. sativa and L. sativa were evaluated. Even at low concentrations (5.00 mg/L), ametryne caused toxic effects on the mobility of D. similis, and 0.25 g/L caused toxic effects on the seeds. Root growth and the percentage of inhibition showed greater sensitivity to ametryne compared with seed germination. Thus, ametryne resulted in toxic effects to the analyzed organisms, which may bring damage to both aquatic and terrestrial ecosystems.

scholarly journals Physiological and toxic effects of selenium on seed germination of cowpea seedlings

Bragantia ◽  
2019 ◽  
Vol 78 (4) ◽  
pp. 498-508 ◽  
Author(s):  
Allan de Marcos Lapaz ◽  
Luiz Felipe de Melo Santos ◽  
Camila Hatsu Pereira Yoshida ◽  
Reges Heinrichs ◽  
Marcelo Campos ◽  
...  
Keyword(s):  
Seed Germination ◽  
Toxic Effects

scholarly journals The effects of different concentrations of Nickel on seed germination and growth of Coriander (Coriandrum sativum)

2019 ◽  
Vol 25 (2) ◽  
Author(s):  
Subhash Chandra Yadav ◽  
Naveen Krishna Srivastava
Keyword(s):  
Heavy Metal ◽  
Seed Germination ◽  
Plant Growth ◽  
Environmental Stress ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Coriandrum Sativum ◽  
Toxic Effects ◽  
Germination And Growth

Heavy metal pollution is a major environmental stress than can affect plant growth. The toxic effects of nickel on germination and growth of Coriander (Coriandrum sativum) seedling were investigated for 8 days. Growth of seedling parts especially radicle was greatly reduced for concentration at and above 50 mg/l

Alleviatory effects of calcium on the toxicity of sodium, potassium and magnesium chlorides to seed germination in three non-halophytes

2003 ◽  
Vol 13 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Kazuo Tobe ◽  
Liping Zhang ◽  
Kenji Omasa
Keyword(s):  
Seed Germination ◽  
Toxic Effects ◽  
Saline Soils ◽  
Salt Solutions ◽  
Artemisia Ordosica ◽  
Sodium Potassium ◽  
Seed Germinability ◽  
Low Concentrations ◽  
Radicle Emergence ◽  
Germination Experiments

AbstractSaline soils contain numerous salts with varying impact on seed germination. Seeds of three non-halophytic species found in Chinese sandy deserts (Artemisia ordosica, Aristida adscensionis and Bassia dasyphylla) were incubated in salt solutions (NaCl, KCl or MgCl2, each with or without CaCl2) at 20°C in the dark. The effects of each salt on the percentage of seeds from which visibly detectable radicles emerged, and the percentage of seeds with emerging radicles surviving to a length of at least 4 mm, were examined. NaCl, KCl and MgCl2 were toxic to emerging radicles in all three species, but before radicle emergence these salts reduced seed germinability only in A. ordosica. The toxic effects of each salt on the radicles were alleviated in all three species by the addition of low concentrations of CaCl2. MgCl2 was more toxic than NaCl and KCl, and the concentration of CaCl2 needed to alleviate the toxicity of MgCl2 was several times higher than that required for alleviation of NaCl or KCl toxicity. These results suggest that Ca2+ present in saline soils alleviates the toxic effects of other salt components on seed germination, and that the results of germination experiments with a single salt are not always applicable to field conditions.

scholarly journals Assessing the effects of accumulated Cd(II) on seed germination and root development of Arabidopsis thaliana

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Yejin Lee ◽  
Jinwoo Jang ◽  
Yangwon Jeon ◽  
Hyojin Kim ◽  
Geupil Jang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Seed Germination ◽  
Inhibitory Effect ◽  
Model System ◽  
Toxic Effects ◽  
Auxin Response ◽  
E Coli ◽  
Germination And Growth ◽  
The Relationship ◽  
Visual Marker

AbstractIn this study, Arabidopsis thaliana was used as a model system to assess the toxic effects of cadmium on plant development and growth. The germination and growth of A. thaliana was inhibited by Cd(II), and the inhibitory effect was dosage-dependent. The significant decrease of germination rates and root growths of A. thaliana were observed from 50 mg/L and 25 mg/L of CdCl2, respectively. Although both shoot and root growths were suppressed by Cd(II), root developments were more sensitive to Cd(II) than shoot developments, as evidenced by shoot growths observed over 50 mg/L of CdCl2. In the concordance to this result, it was also observed that the expression of DR5::VENUS, a visual marker of auxin response, was dependent on the Cd(II) concentration and was strongly reduced from 5 mg/L of CdCl2. In addition, the E. coli-based biosensors were employed to quantify accumulated Cd(II) in plants to understand the correlation between toxic effects and Cd(II) in plants. As a result, it was revealed that 0.012 mg/g and 0.138 mg/g of Cd(II) in dried plants were corresponded to the concentration inhibiting root developments and root growths, respectively. Although it needs further investigations, the findings play a significant role in assessing the toxic effects of Cd(II) based on the relationship between the toxic effects and accumulated Cd(II) concentrations in plants.

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