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


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), 593-597. (doi:10.1093/jxb/49.320.593).

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Description/Abstract

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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1093/jxb/49.320.593
ISSNs: 0022-0957 (print)
1460-2431 (electronic)
Keywords: arabidopsis thaliana, elevated co2, cell expansion, lateral root formation, allometric coefficient
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QK Botany
Divisions: University Structure - Pre August 2011 > School of Biological Sciences
ePrint ID: 191445
Date Deposited: 22 Jun 2011 08:25
Last Modified: 27 Mar 2014 19:43
URI: http://eprints.soton.ac.uk/id/eprint/191445

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