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Article Addendum

Metabolome-ionome-biomass interactions: What can we learn about salt stress by multiparallel phenotyping?

Diego H. Sanchez, Henning Redestig, Ute Krämer, Michael K. Udvardi and Joachim Kopka

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Long-term exposure of plants to saline soil results in mineral ion imbalance, altered metabolism, and reduced growth. Currently, the interaction between ion content and plant metabolism under salt-stress is poorly understood. Here we present a multivariate correlation study on the metabolome, ionome, and biomass changes of Lotus japonicus challenged by salt stress. Using latent variable models, we show that increasing salinity leads to reproducible changes of metabolite, ion and nutrient pools. Strong correlations between the metabolome and the ionome or biomass may allow one to estimate the degree of salt stress experienced by a plant based on metabolite profiles. Despite the apparently high predictive power of the models, it remains to be investigated whether such metabolite profiles of non- or moderately-stressed plants can be used by breeding programs as ideal ideotypes for the selection of enhanced salt-tolerant genotypes.

Addendum to: Sanchez DH, Lippold F, Redestig H, Hannah M, Erban A, Krämer U, Kopka J, Udvardi MK. Integrative functional genomics of salt acclimatization in the model legume Lotus japonicus. Plant J 2008, doi:10.1111/j.1365-313X.2007.03381.x

Authors

Diego H. Sanchez

Max Planck Institute for Molecular Plant Physiology, Wissenschaftspark Golm, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany

Henning Redestig

Max Planck Institute for Molecular Plant Physiology, Wissenschaftspark Golm, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany

Ute Krämer

Bioquant Center, University of Heidelberg, Im Neuenheimer Feld 267, Heidelberg, D-69120, Germany

Michael K. Udvardi

Samuel Roberts Noble Foundation, 2510 Sam Noble Pky., Ardmore, OK 73401, USA

Joachim Kopka

Max Planck Institute for Molecular Plant Physiology, Wissenschaftspark Golm, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany

Purchase article for $19

Subscribe to this journal for $79/year