Towards a synthetic view of potato cold and salt stress response by transcriptomic and proteomic analyses

Potato can suffer from several abiotic stresses such as cold temperature, high soil salinity, lack of water or heavy metal exposure, to name a few. They are known to affect plant growth as well as productivity, with differential regulations at several levels. Potato response to cold and salt exposur...

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Bibliographic Details
Published in:Plant molecular biology 2012-03, Vol.78 (4-5), p.503-514
Main Authors: Evers, D., Legay, S., Lamoureux, D., Hausman, J. F., Hoffmann, L., Renaut, J.
Format: Article
Language:English
Subjects:
Biochemistry
Biomedical and Life Sciences
Cold Temperature
Gene Expression Profiling
Gene Expression Regulation, Plant
Genes, Plant
Life Sciences
Oligonucleotide Array Sequence Analysis
Plant biology
Plant growth
Plant Pathology
Plant Proteins - genetics
Plant Proteins - metabolism
Plant Sciences
Potatoes
Proteomics
Salinity
Salt-Tolerance
Solanum tuberosum - genetics
Solanum tuberosum - physiology
Stress response
Stress, Physiological
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Summary:Potato can suffer from several abiotic stresses such as cold temperature, high soil salinity, lack of water or heavy metal exposure, to name a few. They are known to affect plant growth as well as productivity, with differential regulations at several levels. Potato response to cold and salt exposure was investigated at both transcriptomic and proteomic levels in a growth chamber experiment. Cold exposure in potato resulted in a higher number of significantly differentially regulated genes compared to salt exposure, whereas there were nearly three times more differentially regulated proteins after salt exposure when compared to cold exposure. The allocation of up and down-regulated genes at the functional category level also differed between salt and cold exposure although common trends, previously described in various abiotic stresses, were observed. In both stresses, the majority of photosynthesis-related genes were down-regulated whereas cell rescue and transcription factor-related genes were mostly up-regulated. In the other functional categories no common trend was observed; salt exposure results displayed a strong down-regulation of genes implicated in primary metabolism, detoxication apparatus and signal transduction, whereas upon cold exposure, up and down-regulated genes were similar in number. At the proteomic level, the abundance of the majority of identified proteins was increased except for the photosynthesis-related proteins, which were mostly less abundant after both salt and cold exposure. Common responses between salt and cold stress and specific responses inherent to these abiotic stresses are described.
ISSN:0167-4412
1573-5028
DOI:10.1007/s11103-012-9879-0