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- Title
The transcriptome of Populus in elevated CO<sub>2</sub>.
- Authors
Taylor, Gail; Street, Nathaniel R.; Tricker, Penny J.; Sjödin, Andreas; Graham, Laura; Skogström, Oskar; Calfapietra, Carlo; Scarascia-Mugnozza, Giuseppe; Jansson, Stefan
- Abstract
• The consequences of increasing atmospheric carbon dioxide for long-term adaptation of forest ecosystems remain uncertain, with virtually no studies undertaken at the genetic level. A global analysis using cDNA microarrays was conducted following 6 yr exposure ofPopulus × euramericana(clone I-214) to elevated[CO2] in a FACE (free-air CO2 enrichment) experiment.• Gene expression was sensitive to elevated[CO2] but the response depended on the developmental age of the leaves, and< 50 transcripts differed significantly between different CO2 environments. For young leaves most differentially expressed genes were upregulated in elevated[CO2], while in semimature leaves most were downregulated in elevated[CO2].• For transcripts related only to the small subunit of Rubisco, upregulation in LPI 3 and downregulation in LPI 6 leaves in elevated CO2 was confirmed byanova. Similar patterns of gene expression for young leaves were also confirmed independently across year 3 and year 6 microarray data, and using real-time RT–PCR.• This study provides the first clues to the long-term genetic expression changes that may occur during long-term plant response to elevated CO2.New Phytologist(2005)doi: 10.1111/j.1469-8137.2005.01450.x© New Phytologist(2005)
- Subjects
PLANT adaptation; EFFECT of carbon dioxide on plants; POPLARS; CARBON dioxide; GENE expression
- Publication
New Phytologist, 2005, Vol 167, Issue 1, p143
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1111/j.1469-8137.2005.01450.x