Avtor/Urednik		Kinsman, EA; Lewis, C; Davies, MS; Young, JE; Francis, D; Vilhar, B; Ougham, HJ
Naslov		Elevated CO2 stimulates cells to divide in grass meristems: a differential effect in two natural populations of Dactylis glomerata
Tip		članek
Vir		Plant Cell Environ
Vol. in št.		Letnik 20
Leto izdaje		1997
Obseg		str. 1309-16
Jezik		eng
Abstrakt		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 degrees 53') than in a Swedish population (63 degrees 09;N). In the shoot meristem, the cell cycle shortened to about the same extent (cca 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 popultion in both meristems. In the root meristem, there was a 1-86-fold increase in the Portuguese compared with a 1-31-fold incrase 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 evelated (CO2) treatment was an incrase 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.
Deskriptorji		GRASSES MERISTEM CARBON DIOXIDE CELL CYCLE MITOTIC INDEX PLANT SHOOTS PLANT ROOTS