Project Tocoen. The fate of selected organic compounds in the environment. The growth response of maize to increasing concentrations of fluoranthene

Kummerová, Marie; Gloser, Jan; Slovák, Ladislav; Holoubek, Ivan

doi:10.1080/02772249609358301

Cited by 11 publications

(10 citation statements)

References 15 publications

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“…In maize plants exposed to FLT, statistically significant decrease of chlorophyll content was found before the decrease of net photosynthesis (Kummerova´et al, 1996). From our results we cannot conclude unambiguously which of above-mentioned mechanisms found in higher plants is crucial for the significant increase of F 0 value in both lichen species.…”

Section: Effect Of Fluoranthene On Lichen Photosynthesis 125contrasting

confidence: 58%

Inhibitory Effect of Fluoranthene on Photosynthetic Processes in Lichens Detected by Chlorophyll Fluorescence

et al. 2005

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The effect of increasing concentration (0.01, 1 and 5 mg l(-1)) of fluoranthene (FLT) and the duration of exposure (12, 24, 36, 48 and 60 h) on the chlorophyll fluorescence parameters (F0, F(V)/F(M), Phi II and (F(M) - F(S))/F (S)) of symbiotic algae in thalli of two foliose lichens Lasallia pustulata and Umbilicaria hirsuta was investigated. Also the FLT concentration in thalli of both lichen species and the proportion of symbiotic algae (photobionts) in thalli was studied. The results obtained demonstrated that the applied concentration of FLT (1 and 5 mg l(-1)) affected primary photochemical processes of photosynthesis of algae in both lichen species. The F0 values increased and the F(V)/F(M) and Phi II values decreased. The fluoranthene content in thallus of both lichen species was increased with increasing FLT concentration in the environment. Chlorophyll fluorescence parameters showed different sensitivity to the content of FLT in Lasallia pustulata and Umbilicaria hirsuta, respectively. Higher sensitivity, detected in U. hirsuta, can be related to its diverse anatomical structure (higher portion of symbiotic algae in thalli) and to the different (nearly 2.5 times higher) content of FLT after exposure.

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Section: Effect Of Fluoranthene On Lichen Photosynthesis 125contrasting

confidence: 58%

Inhibitory Effect of Fluoranthene on Photosynthetic Processes in Lichens Detected by Chlorophyll Fluorescence

et al. 2005

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“…BA) from the MS medium and also its subsequent transport into the shoot ( Table 2). The observed acropetal transport of PAHs was recorded also in other plant species (Kummerová et al 1996;Trapp 2000). Higher FLT content in IAA treated plants in comparison with IAA ?…”

Section: Discussionmentioning

confidence: 77%

“…A shift in values of Ic towards higher values demonstrated that higher concentrations of FLT could influence photosynthesis more than the respiration processes. Primary processes are dependent on the membrane integrity, as recorded by Chiang et al (1996), Kummerová et al (1996) and others, however it is not possible to distinguish securely the share of FLT effect and e.g. ethylene influence (Fig.…”

Section: Discussionmentioning

confidence: 98%

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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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“…For pea, root length was reduced by 11% at FLT≥0.1mg/l but other parameters were not affected until concentration reached 1mg/l or higher; the significant response in maize seedlings was already seen at FLT≥0.1 mg/l, with inhibition of root length by at least 6%, shoot by 23%, and lower dry weight by 15-37%. Significant reduction of growth in the presence of toxicants has also been recorded in barley [32], maize [33] and red clover, ryegrass and mustard [34]. The highest applied concentration of FLT (7 mg/l) reduced the length of the primary root in maize by 83% and in pea by up to 68%, and the length of shoots in maize by 85% and pea by up to 50%.…”

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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Project Tocoen. The fate of selected organic compounds in the environment. The growth response of maize to increasing concentrations of fluoranthene

Cited by 11 publications

References 15 publications

Inhibitory Effect of Fluoranthene on Photosynthetic Processes in Lichens Detected by Chlorophyll Fluorescence

Inhibitory Effect of Fluoranthene on Photosynthetic Processes in Lichens Detected by Chlorophyll Fluorescence

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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