Gene expression responses of paper birch (Betula papyrifera) to elevated CO2 and O3 during leaf maturation and senescence
| Autor: | Mikael Brosché, Mikko Kolehmainen, Elina Vapaavuori, Ramesh Thakur, Elina Oksanen, Sari Kontunen-Soppela, Juha Parviainen, Jaakko Kangasjärvi, Markku Keinänen, Hanna Ruhanen, David F. Karnosky |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
0106 biological sciences
Senescence Microarray Health Toxicology and Mutagenesis Gene Expression Toxicology Photosynthesis medicine.disease_cause 01 natural sciences 03 medical and health sciences Ozone Gene Expression Regulation Plant Botany Gene expression medicine Gene Betula Oligonucleotide Array Sequence Analysis 030304 developmental biology Betulaceae Air Pollutants 0303 health sciences biology Microarray analysis techniques General Medicine Carbon Dioxide biology.organism_classification Pollution Molecular biology Plant Leaves Oxidative stress 010606 plant biology & botany |
| Zdroj: | Environmental Pollution. 158:959-968 |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/j.envpol.2009.10.008 |
| Popis: | Gene expression responses of paper birch ( Betula papyrifera ) leaves to elevated concentrations of CO 2 and O 3 were studied with microarray analyses from three time points during the summer of 2004 at Aspen FACE. Microarray data were analyzed with clustering techniques, self-organizing maps, K -means clustering and Sammon's mappings, to detect similar gene expression patterns within sampling times and treatments. Most of the alterations in gene expression were caused by O 3 , alone or in combination with CO 2 . O 3 induced defensive reactions to oxidative stress and earlier leaf senescence, seen as decreased expression of photosynthesis- and carbon fixation-related genes, and increased expression of senescence-associated genes. The effects of elevated CO 2 reflected surplus of carbon that was directed to synthesis of secondary compounds. The combined CO 2 + O 3 treatment resulted in differential gene expression than with individual gas treatments or in changes similar to O 3 treatment, indicating that CO 2 cannot totally alleviate the harmful effects of O 3 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect