E. A. Kinsman, School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey TW20 OEX, UK.
Elevated CO2 stimulates cells to divide in grass meristems: a differential effect in two natural populations of Dactylis glomerata
Article first published online: 28 JUN 2008
Plant, Cell & Environment
Volume 20, Issue 10, pages 1309–1316, October 1997
How to Cite
KINSMAN, E. A., LEWIS, C., DAVIES, M. S., YOUNG, J. E., FRANCIS, D., VILHAR, B. and OUGHAM, H. J. (1997), Elevated CO2 stimulates cells to divide in grass meristems: a differential effect in two natural populations of Dactylis glomerata. Plant, Cell & Environment, 20: 1309–1316. doi: 10.1046/j.1365-3040.1997.d01-21.x
- Issue published online: 28 JUN 2008
- Article first published online: 28 JUN 2008
- Received 8 March 1997; received in revised form 6 May 1997; accepted for publication 9 June 1997
- Dactylis glomerata;
- cell cycle;
- elevated carbon dioxide;
In this study, we tested the hypothesis that elevated [CO2] shortens the cell cycle in meristems of Dactylis glomerata, more in a Portuguese population (38°53′N) than in a Swedish population (63°09′N). In the shoot meristem, the cell cycle shortened to about the same extent (∼ 26%) in both populations exposed to the elevated [CO2] treatment. In the root meristem, the cell cycle shortened by 17% in the Portuguese and by 8% in the Swedish population. However, the proportion of rapidly cycling cells increased in the Portuguese much more than in the Swedish population in both meristems. In the root meristem, there was a 1.86-fold increase in the Portuguese compared with a 1.31-fold increase in the Swedish. In the shoot meristem, the increases were 1.5–3-fold for the Portuguese and 1.2-fold for the Swedish. The data are consistent in showing that a major response to the elevated [CO2] treatment was an increase in the proportion of cells that were cycling and that this was more marked for the Portuguese population. A more general response to the elevated [CO2] treatment was a shortening of the cell cycle regardless of population.