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A model system to study the effects of elevated elevated CO2 on the developmental physiology of roots: the use of Arabidopsis thaliana

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Three developmental changes were observed in the roots of Arabidopsis thaliana (Columbia) when shoots were exposed to elevated CO2. (i) The allometric coefficient, k, was enhanced significantly (P<0.001), (ii) primary root length and root extension rate were enhanced (P<0.001). Accelerated cortical cell expansion contributed to this effect and was associated with increased cell wall extensibility, measured as % plasticity. (iii) Lateral root formation and extension were also increased in elevated CO2 (P<0.05). These results illustrate that root growth and structure was altered following exposure to elevated CO2. The changes observed suggest that Arabidopsis provides a useful model which should, in future, be amenable to study using appropriate mutants allowing the genetic basis of the responses to be identified.

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Citation

Crookshanks, Meg, Taylor, Gail and Dolan, Liam (1997) A model system to study the effects of elevated elevated CO2 on the developmental physiology of roots: the use of Arabidopsis thaliana Journal of Experimental Botany, 49, (320), pp. 593-597. (doi:10.1093/jxb/49.320.593).

More information

Published date: 10 October 1997
Keywords: arabidopsis thaliana, elevated co2, cell expansion, lateral root formation, allometric coefficient

Identifiers

Local EPrints ID: 191445
URI: http://eprints.soton.ac.uk/id/eprint/191445
ISSN: 0022-0957
PURE UUID: fbb2f14b-af75-4647-a3eb-86d8d05cf4ef

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Date deposited: 22 Jun 2011 08:25
Last modified: 18 Jul 2017 11:35

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Contributors

Author: Meg Crookshanks
Author: Gail Taylor
Author: Liam Dolan

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