Leaf growth response to mild drought: natural variation sheds light on trait architecture

Plant growth and crop yield are negatively affected by a reduction in water availability. However, a clear understanding of how growth is regulated under non-lethal drought conditions is lacking. Recent advances in genomics, phenomics and transcriptomics allow in-depth analysis of natural variation. In this study, we conducted a detailed screening of leaf growth responses to mild drought in a worldwide collection of Arabidopsis thaliana accessions. 

The raw phenotyping can be found in:
- cellularData.txt -> mature (23 days after stratification; DAS) leaf epidermis (third leaf) analysed for cell area, cell number, pavement cell area, pavement cell number, stomatal index and leaf area of the analysed leaf.

- leaf3AreaMaturity.txt -> area of the third leaf at maturity (23DAs) in mm2.

- leaf3AreaProliferation.txt -> area of the third leaf at proliferation (last day of full cell proliferation; 8-10 DAS) in mm2.

- rosetteArea Maturity.txt -> projected rosette area at maturity (22DAS)

The phenotyping results have been normalised for batch effects ('experiment' in raw data)

- allPhenotypesNormalised.txt -> contains the normalised data for all the measured phenotypes

All datafiles indicate the accession name ('Accession'), the unique identifier for each accessions ('Ecotype_ID') as used in the 1001genomes project (www.1001genomes.org) and the treatment ('C' indicate well-watered plants, 'S' the mild-drought treated plants).

These results and methodological results are described in Clauw et al. (2016, The Plant Cell).

Citation:

Clauw, Pieter, Frederik Coppens, Arthur Korte, Dorota Herman, Bram Slabbinck, Stijn Dhondt, Twiggy Van Daele, et al. 2016. "Leaf Growth Response to Mild Drought: Natural Variation in Arabidopsis Sheds Light on Trait Architecture." The Plant Cell, October. doi:10.1105/tpc.16.00483.