Coordinated Regulation of Development in Arabidopsis
Before shifting experimental focus fully to Clytia hemisphaerica, the Malamy lab spent many years investigating the regulation of root system growth, specifically the environmental control of lateral root formation, using the model plant Arabidopsis thaliana. We discovered that the emergence of lateral root primordia is regulated by the balance of nitrogen and sucrose, the presence of overlying cell walls, and the movement of phloem. Further, we identified the LRD2 gene as a critical regulator of phloem development and root system growth in the seedling.
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For more Arabidopsis information, please visit the resources below:
To learn more about our work with Arabidopsis, please see some of our published works:
Cell Wall Properties Play an Important Role in the Emergence of Lateral Root Primordia From the Parent Root. Roycewicz PS, Malamy JE. J Exp Bot. 2014;65(8):2057-2069. doi:10.1093/jxb/eru056
Dissecting the Effects of Nitrate, Sucrose and Osmotic Potential on Arabidopsis Root and Shoot System Growth in Laboratory Assays. Roycewicz P, Malamy JE. Philos Trans R Soc Lond B Biol Sci. 2012;367(1595):1489-1500. doi:10.1098/rstb.2011.0230
Arabidopsis Lateral Root Development 3 Is Essential for Early Phloem Development and Function, and Hence for Normal Root System Development. Ingram P, Dettmer J, Helariutta Y, Malamy JE. Plant J. 2011;68(3):455-467. doi:10.1111/j.1365-313X.2011.04700.x
Root System Architecture in Arabidopsis Grown in Culture Is Regulated by Sucrose Uptake in the Aerial Tissues. Macgregor DR, Deak KI, Ingram PA, Malamy JE. Plant Cell. 2008;20(10):2643-2660. doi:10.1105/tpc.107.055475
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