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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Velikova, Violeta Tsonev, Tsonko Loreto, Francesco Centritto, Mauro |
| Description | Country affiliation: Bulgaria Author Affiliation: Velikova V ( Bulgarian Academy of Sciences, Acad. M. Popov Institute of Plant Physiology, Acad. G. Bonchev, Bl. 21, 1113 Sofia, Bulgaria. violet@obzor.bio21.bas.bg) |
| Abstract | Poplar (Populus nigra) plants were grown hydroponically with 30 and 200 µM Ni (Ni30 and Ni200). Photosynthesis limitations and isoprenoid emissions were investigated in two leaf types (mature and developing). Ni stress significantly decreased photosynthesis, and this effect depended on the leaf Ni content, which was lower in mature than in developing leaves. The main limitations to photosynthesis were attributed to mesophyll conductance and metabolism impairment. In Ni-stressed developing leaves, isoprene emission was significantly stimulated. We attribute such stimulation to the lower chloroplastic [CO2] than in control leaves. However chloroplastic [CO2] did not control isoprene emission in mature leaves. Ni stress induced the emission of cis-ß-ocimene in mature leaves, and of linalool in both leaf types. Induced biosynthesis and emission of isoprenoids reveal the onset of antioxidant processes that may also contribute to reduce Ni stress, especially in mature poplar leaves. |
| File Format | HTM / HTML |
| ISSN | 02697491 |
| Issue Number | 5 |
| Volume Number | 159 |
| e-ISSN | 18736424 |
| Journal | Environmental Pollution |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-05-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Discipline Science Carbon Dioxide Metabolism Nickel Photosynthesis Drug Effects Populus Terpenes Chlorophyll Multivariate Analysis Administration & Dosage Plant Leaves Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Pollution Medicine Toxicology |
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