Gifford, Miriam L., Banta, Joshua A., Katari, Manpreet S., Hulsmans, Jo, Chen, Lisa, Ristova, Daniela, Tranchina, Daniel, Purugganan, Michael D., Coruzzi, Gloria, Birnbaum, Kenneth D., Rosas, Ulises and Cibrian-Jaramillo, Angelica (2013) Plasticity regulators modulate specific root traits in discrete nitrogen environments. PLoS Genetics, Volume 9 (Number 9). Article number e1003760. doi:10.1371/journal.pgen.1003760

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Abstract

Plant development is remarkably plastic but how precisely can the plant customize its form to specific environments When the plant adjusts its development to different environments, related traits can change in a coordinated fashion, such that two traits co-vary across many genotypes. Alternatively, traits can vary independently, such that a change in one trait has little predictive value for the change in a second trait. To characterize such ‘‘tunability’’ in developmental plasticity, we carried out a detailed phenotypic characterization of complex root traits among 96 accessions of the model Arabidopsis thaliana in two nitrogen environments. The results revealed a surprising level of independence in the control of traits to environment – a highly tunable form of plasticity. We mapped genetic architecture of plasticity using genome-wide association studies and further used gene expression analysis to narrow down gene candidates in mapped regions. Mutants in genes implicated by association and expression analysis showed precise defects in the predicted traits in the predicted environment, corroborating the independent control of plasticity traits. The overall results suggest that there is a pool of genetic variability in plants that controls traits in specific environments, with opportunity to tune crop plants to a given environment.

Item Type:	Journal Article
Alternative Title:	Integration of responses within and across Arabidopsis' natural accessions uncovers loci controlling root systems architecture
Subjects:	Q Science > QH Natural history > QH301 Biology Q Science > QH Natural history > QH426 Genetics Q Science > QK Botany
Divisions:	Faculty of Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH):	Plant genomes, Arabidopsis thaliana, Plant molecular genetics, Plant genetics, Soils -- Nitrogen content
Journal or Publication Title:	PLoS Genetics
Publisher:	Public Library of Science
ISSN:	1553-7390
Official Date:	September 2013
Dates:	Date Event September 2013 Published
Volume:	Volume 9
Number:	Number 9
Page Range:	Article number e1003760
DOI:	10.1371/journal.pgen.1003760
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
Description:	Includes amongst the authors listed here are Ulises Rosas and Angelica Cibrian-Jaramillo who are included amongst the list of authors of the article: 'Integration of responses within and across Arabidopsis' natural accessions uncovers loci controlling root systems architecture'
Funder:	National Science Foundation (U.S.) (NSF), National Institutes of Health (U.S.) (NIH), Human Frontiers Science Program (HFSP), International Fulbright Science and Technology Award (IFSTA), Marie Curie Fellowship Association (MCFA), France. Agence nationale de la recherche (ANR), Centre national de la recherche scientifique (France) (CNRS), European Molecular Biology Organization (EMBO), Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC)
Grant number:	MCB - 0929338 (NSF) ; R01 GM032877, R01 GM078279 (NIH) ; 11 PDOC 020 01 (ANR) ; 107-2005 (EMBO) ; BB/H109502/1 (BBSRC)

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