Influence of root exposure concentration on the fate of nitrobenzene in soybean

Fletcher, John S.; McFarlane, James C.; Pfleeger, Thomas G.; Wickliff, Carlos

doi:10.1016/0045-6535(90)90108-6

Cited by 27 publications

(13 citation statements)

References 10 publications

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“…The lowest number of germinated seeds was found in the highest FLT concentration (500 ug I" 1 ). The obtained results are in agreement with the information of FLETCHER et al 13 The significance of the inhibition of the germination energy and the germination rate of seeds of all plant species were higher when FLT concentration in the solution was increased. Of interest is the statistically concurrent significance of the inhibition of germination in most tested species whose seeds were exposed to the lowest FLT concentration (10 ng I" 1 ).…”

Section: Discussionsupporting

confidence: 95%

The effect of fluoranthene on the germination of plants

Kummerová

Slovák

Mazánková

et al. 1997

Toxicological & Environmental Chemistry

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The effect was studied of increasing concentration (10,100 and 500 ng l -1 ) of fluoranthene (FLT) in solution on the energy of germination and the germination rate of seeds of Allium cepa L., Helianthus annuus L., Lactuca sativa L., Picea abies (L.) Karst., Sinapis alba L., Solanum lycopersicum L., Triticum aestivum L., Zea mays L. The content of lipids in the seeds was determined and the effect of FLT on the uptake of water by the seeds evaluated.The obtained results demonstrated that the increasing FLT concentration inhibited the energy of germination and the germination rate of seeds of all plant species. The species studied showed different sensitivity to the content of FLT. The effect of increasing FLT concentration was reflected more conspicuously in plant species with a higher content of lipids in the seeds (Helianthus annuus L., Lactuca sativa L., Picea abies (L.) Karst., Solanum lycopersicum L.). The inhibition of germination maked deeper significantly by the application of FLT from the beginning of imbibition. In none of the plant species FLT did not affect the uptake of water by the seeds.

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Section: Discussionsupporting

confidence: 95%

The effect of fluoranthene on the germination of plants

Kummerová

Slovák

Mazánková

et al. 1997

Toxicological & Environmental Chemistry

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“…BCF values demonstrated that the exposure to low FLT concentration can lead to its considerable accumulation in plants due to a less saturated uptake. According to Fletcher et al (1990) higher environmental loading can cause saturation or even reduction in the pollutant uptake rate as shown by lower BCF, probably due to the strong acute toxic effect and subsequent inhibition of biochemical and physiological processes.…”

Section: Discussionmentioning

confidence: 98%

Understanding the effect of organic pollutant fluoranthene on pea in vitro using cytokinins, ethylene, ethane and carbon dioxide as indicators

et al. 2010

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Environmental contaminants like polycyclic aromatic hydrocarbons can influence many biochemical and physiological processes in plants. The effect of 0.1, 1 and 5 mg l -1 of fluoranthene (FLT) in combination with indole-3-acetic acid (IAA, 0.1 mg l -1 ) or a combination of IAA and N 6 -benzyladenine (BA, both 0.1 mg l -1 ) on the growth and production of ethylene, ethane and CO 2 in Pisum sativum L. cultivated for 21 days in vitro was investigated. In 21 days old plants also net photosynthesis rate, content of FLT and cytokinins were evaluated. FLT 5 mg l -1 significantly inhibited the growth of pea after 21 days in both IAA and IAA ? BA treatments, increased production of ethylene (by 11% in IAA and 14% in IAA ? BA treatments, respectively) and ethane (by 28 and 18%) and decreased production of CO 2 (by 23 and 29%). The net photosynthesis rate decreased in response to FLT concentration by up to 51% under saturating irradiation (600-1,200 lmol m -2 s -1 ), as found in IAA ? BA ? FLT 5 mg l -1 treatment. The content of FLT in pea plant shoots well correlated with increasing FLT treatment in both IAA and IAA ? BA medium. The content of cytokinins in pea shoots changed in response to FLT treatment. FLT 5 mg l -1 caused a rise in level of trans-zeatin (by 16% in IAA and 9% in IAA ? BA treatments, respectively), dihydrozeatin riboside (by 27 and 50%), benzyladenine (by 3 and 80%), benzyladenine riboside (by 44 and 17%) and meta-topolin riboside (by 139 and 214%), no change in isopentenyladenine level and a decrease in metatopolin level (by 33% in IAA and 36% in IAA ? BA treatments, respectively). Cultivation of plants in vitro allowed not only to assess their growth, photosynthetic activity and the level of cytokinins, but also to extend the knowledge about the effect of PAHs on production of gaseous stress indicators like ethylene, ethane and CO 2 . Recorded changes in all studied parameters show, that persistent organic pollutants like PAHs can negatively influence plant growth and development.

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“…BCF values demonstrated that the exposure to low FLT concentration can still lead to its considerable accumulation in plants due to a less saturated uptake. According to Fletcher et al [43] higher environmental loading can cause saturation or even reduction in the pollutant uptake rate as shown by lower BCF, probably due to the strong acute toxic effect and subsequent inhibition of biochemical and physiological processes. The FLT translocation factor (TF) in maize and pea plants is expressed as the ratio shoot/root.…”

Section: Resultsmentioning

confidence: 99%

Effect of organic pollutant treatment on the growth of pea and maize seedlings

et al. 2011

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This study confirmed the considerable effect of polycyclic aromatic hydrocarbon fluoranthene (FLT; 0.01, 0.1, 1, 4 and 7 mg/l) exposure on the germination of seeds, growth and root morphology of seedlings in Zea mays and Pisum sativum. Seed germination was significantly inhibited at FLT≥0.01 mg/l in maize and at ≥1 mg/l in pea. The amount of released ethylene after 3 days of germination was significantly increased in both species at FLT≥0.1 mg/l. After 7 days of seedling cultivation a significant decrease in the dry weight of roots and shoots occurred in maize at FLT≥0.1 mg/l while in pea similar effect was observed at ≥1 mg/l. The total length of primary and lateral roots was significantly reduced by FLT≥1 mg/l in maize and by 4 and 7 mg/l in pea. The length of the non-branched part of the primary root was significantly reduced by FLT≥0.1 mg/l in maize and ≥0.01 mg/l in pea. In both species the number of lateral roots was significantly increased at FLT≤1 mg/l and inhibited at concentrations of 4 and 7 mg/l. Fluoranthene content in roots and shoots of both species positively correlated with the FLT treatment.

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Influence of root exposure concentration on the fate of nitrobenzene in soybean

Cited by 27 publications

References 10 publications

The effect of fluoranthene on the germination of plants

The effect of fluoranthene on the germination of plants

Understanding the effect of organic pollutant fluoranthene on pea in vitro using cytokinins, ethylene, ethane and carbon dioxide as indicators

Effect of organic pollutant treatment on the growth of pea and maize seedlings

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