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  Predicting Arabidopsis Freezing Tolerance and Heterosis in Freezing Tolerance from Metabolite Composition

Korn, M., Gärtner, T., Erban, A., Kopka, J., Selbig, J., & Hincha, D. K. (2010). Predicting Arabidopsis Freezing Tolerance and Heterosis in Freezing Tolerance from Metabolite Composition. Molecular Plant, 3(1), 224-235. doi:10.1093/mp/ssp105.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-23D4-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-D0C2-F
Genre: Journal Article

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 Creators:
Korn, M.1, Author              
Gärtner, T.2, Author
Erban, A.3, Author              
Kopka, J.3, Author              
Selbig, J.4, Author              
Hincha, D. K.1, Author              
Affiliations:
1Transcript Profiling, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753306              
2External Organizations, ou_persistent22              
3Applied Metabolome Analysis, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753338              
4BioinformaticsCRG, Cooperative Research Groups, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753315              

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Free keywords: abiotic environmental stress cold acclimation metabolomics bioinformatics biostatistics arabidopsis natural variation cold-acclimation thaliana accessions temperature-stress quantitative trait genetic-variation molecular-basis plants establishment metabolomics
 Abstract: Heterosis, or hybrid vigor, is one of the most important tools in plant breeding and has previously been demonstrated for plant freezing tolerance. Freezing tolerance is an important trait because it can limit the geographical distribution of plants and their agricultural yield. Plants from temperate climates increase in freezing tolerance during exposure to low, non-freezing temperatures in a process termed 'cold acclimation'. Metabolite profiling has indicated a major reprogramming of plant metabolism in the cold, but it has remained unclear in previous studies which of these changes are related to freezing tolerance. In the present study, we have used metabolic profiling to discover combinations of metabolites that predict freezing tolerance and its heterosis in Arabidopsis thaliana. We identified compatible solutes and, in particular, the pathway leading to raffinose as crucial statistical predictors for freezing tolerance and its heterosis, while some TCA cycle intermediates contribute only to predicting the heterotic phenotype. This indicates coordinate links between heterosis and metabolic pathways, suggesting that a limited number of regulatory genes may determine the extent of heterosis in this complex trait. In addition, several unidentified metabolites strongly contributed to the prediction of both freezing tolerance and its heterosis and we present an exemplary analysis of one of these, identifying it as a hexose conjugate.

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Language(s): eng - English
 Dates: 2009-12-232010
 Publication Status: Published in print
 Pages: -
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 Identifiers: ISI: ISI:000273893200016
DOI: 10.1093/mp/ssp105
ISSN: 1674-2052 (Print)1674-2052 (Linking)
URI: ://000273893200016http://mplant.oxfordjournals.org/content/3/1/224.full.pdf
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Title: Molecular Plant
Source Genre: Journal
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Publ. Info: Oxford University Press
Pages: - Volume / Issue: 3 (1) Sequence Number: - Start / End Page: 224 - 235 Identifier: Other: 1674-2052
CoNE: https://pure.mpg.de/cone/journals/resource/1674-2052