Relationships between Growth, Growth Response to Nutrient Supply, and Ion Content Using a Recombinant Inbred Line Population in Arabidopsis1[W][OA]
Open Access
- 8 September 2010
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 154 (3), 1361-1371
- https://doi.org/10.1104/pp.110.161398
Abstract
Growth is an integrative trait that responds to environmental factors and is crucial for plant fitness. A major environmental factor influencing plant growth is nutrient supply. In order to explore this relationship further, we quantified growth-related traits, ion content, and other biochemical traits (protein, hexose, and chlorophyll contents) of a recombinant inbred line population of Arabidopsis (Arabidopsis thaliana) grown on different levels of potassium and phosphate. Performing an all subsets multiple regression analyses revealed a link between growth-related traits and mineral nutrient content. Based on our results, up to 85% of growth variation can be explained by variation in ion content, highlighting the importance of ionomics for a broader understanding of plant growth. In addition, quantitative trait loci (QTLs) were detected for growth-related traits, ion content, further biochemical traits, and their responses to reduced supplies of potassium or phosphate. Colocalization of these QTLs is explored, and candidate genes are discussed. A QTL for rosette weight response to reduced potassium supply was identified on the bottom of chromosome 5, and its effects were validated using selected near isogenic lines. These lines retained over 20% more rosette weight in reduced potassium supply, accompanied by an increase in potassium content in their leaves.This publication has 72 references indexed in Scilit:
- The Ferroportin Metal Efflux Proteins Function in Iron and Cobalt Homeostasis in ArabidopsisPlant Cell, 2009
- What Has Natural Variation Taught Us about Plant Development, Physiology, and Adaptation?Plant Cell, 2009
- Starch as a major integrator in the regulation of plant growthProceedings of the National Academy of Sciences, 2009
- Inherited variability in multiple traits determines fitness in populations of an annual legume from contrasting latitudinal originsAnnals of Botany, 2009
- Incremental steps toward incompatibility revealed by Arabidopsis epistatic interactions modulating salicylic acid pathway activationProceedings of the National Academy of Sciences, 2009
- The leaf ionome as a multivariable system to detect a plant's physiological statusProceedings of the National Academy of Sciences, 2008
- Combined Genetic and Modeling Approaches Reveal That Epidermal Cell Area and Number in Leaves Are Controlled by Leaf and Plant Developmental Processes in ArabidopsisPlant Physiology, 2008
- The Effect of Iron on the Primary Root Elongation of Arabidopsis during Phosphate DeficiencyPlant Physiology, 2008
- Phosphate Starvation Root Architecture and Anthocyanin Accumulation Responses Are Modulated by the Gibberellin-DELLA Signaling Pathway in ArabidopsisPlant Physiology, 2007
- The metabolic signature related to high plant growth rate in Arabidopsis thalianaProceedings of the National Academy of Sciences, 2007