Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6319300 | Environmental Pollution | 2011 | 8 Pages |
Abstract
⺠Nicotiana tabacum 'Bel-W3' is potentially a bioindicator of O3 in the sub-tropics. ⺠However, it is unknown if its redox state would affect its bioindicator performance under sub-tropical environmental conditions. ⺠This study revealed that the redox state of tobacco decreases few days after their placement in the sub-tropical environment, causing them to become susceptible to oxidative stress imposed by chronic doses of O3. ⺠Therefore, its bioindicator efficiency would not be diminished in such levels of atmospheric contamination. ⺠However, the bioindicator efficiency N. tabacum 'Bel-W3' for biomonitoring O3 should be regionally modeled in the sub-tropics, based on both its redox state and on the flux of O3 through stomata, in response to the varying micro-meteorological conditions that govern both physiological processes.
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Authors
Ana P.L. Dias, Marcelle Dafré, Mirian C.S. Rinaldi, Marisa Domingos,