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

(2016) PLANT CELL. 28(10). p.2417-2434
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Abstract
Plant growth and crop yield are negatively affected by a reduction in water availability. However, a clear understanding of how growth is regulated under nonlethal 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 genetic architecture of the growth responses upon mild drought was investigated by subjecting the different leaf growth phenotypes to genome-wide association mapping and by characterizing the transcriptome of young developing leaves. Although no major effect locus was found to be associated with growth in mild drought, the transcriptome analysis delivered further insight into the natural variation of transcriptional responses to mild drought in a specific tissue. Coexpression analysis indicated the presence of gene clusters that co-vary over different genetic backgrounds, among others a cluster of genes with important regulatory functions in the growth response to osmotic stress. It was found that the occurrence of a mild drought stress response in leaves can be inferred with high accuracy across accessions based on the expression profile of 283 genes. A genome-wide association study on the expression data revealed that trans regulation seems to be more important than cis regulation in the transcriptional response to environmental perturbations.
Keywords
GENOME-WIDE ASSOCIATION, WATER-LIMITING CONDITIONS, GENE-EXPRESSION, PLANT-GROWTH, THALIANA ACCESSIONS, TRANSPOSABLE ELEMENTS, TRANSCRIPTION, FACTORS, REGULATORY VARIATION, STRESS RESPONSES, OSMOTIC-STRESS

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Chicago
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.” Plant Cell 28 (10): 2417–2434.
APA
Clauw, P., Coppens, F., Korte, A., Herman, D., Slabbinck, B., Dhondt, S., Van Daele, T., et al. (2016). Leaf growth response to mild drought : natural variation in Arabidopsis sheds light on trait architecture. PLANT CELL, 28(10), 2417–2434.
Vancouver
1.
Clauw P, Coppens F, Korte A, Herman D, Slabbinck B, Dhondt S, et al. Leaf growth response to mild drought : natural variation in Arabidopsis sheds light on trait architecture. PLANT CELL. 2016;28(10):2417–34.
MLA
Clauw, Pieter, Frederik Coppens, Arthur Korte, et al. “Leaf Growth Response to Mild Drought : Natural Variation in Arabidopsis Sheds Light on Trait Architecture.” PLANT CELL 28.10 (2016): 2417–2434. Print.
@article{8503027,
  abstract     = {Plant growth and crop yield are negatively affected by a reduction in water availability. However, a clear understanding of how growth is regulated under nonlethal 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 genetic architecture of the growth responses upon mild drought was investigated by subjecting the different leaf growth phenotypes to genome-wide association mapping and by characterizing the transcriptome of young developing leaves. Although no major effect locus was found to be associated with growth in mild drought, the transcriptome analysis delivered further insight into the natural variation of transcriptional responses to mild drought in a specific tissue. Coexpression analysis indicated the presence of gene clusters that co-vary over different genetic backgrounds, among others a cluster of genes with important regulatory functions in the growth response to osmotic stress. It was found that the occurrence of a mild drought stress response in leaves can be inferred with high accuracy across accessions based on the expression profile of 283 genes. A genome-wide association study on the expression data revealed that trans regulation seems to be more important than cis regulation in the transcriptional response to environmental perturbations.},
  author       = {Clauw, Pieter and Coppens, Frederik and Korte, Arthur and Herman, Dorota and Slabbinck, Bram and Dhondt, Stijn and Van Daele, Twiggy and De Milde, Liesbeth and Vermeersch, Mattias and Maleux, Katrien and Maere, Steven and Gonzalez Sanchez, Nathalie and Inz{\'e}, Dirk},
  issn         = {1040-4651},
  journal      = {PLANT CELL},
  keyword      = {GENOME-WIDE ASSOCIATION,WATER-LIMITING CONDITIONS,GENE-EXPRESSION,PLANT-GROWTH,THALIANA ACCESSIONS,TRANSPOSABLE ELEMENTS,TRANSCRIPTION,FACTORS,REGULATORY VARIATION,STRESS RESPONSES,OSMOTIC-STRESS},
  language     = {eng},
  number       = {10},
  pages        = {2417--2434},
  title        = {Leaf growth response to mild drought : natural variation in Arabidopsis sheds light on trait architecture},
  url          = {http://dx.doi.org/10.1105/tpc.16.00483},
  volume       = {28},
  year         = {2016},
}

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