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Int. J. Mol. Sci. 2013, 14(4), 7617-7641; doi:10.3390/ijms14047617

Plant Core Environmental Stress Response Genes Are Systemically Coordinated during Abiotic Stresses

Center for Plant Molecular Biology (ZMBP), Plant Physiology, University of Tübingen, Auf der Morgenstelle 1, Tübingen 72076, Germany
These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
Received: 1 February 2013 / Revised: 28 March 2013 / Accepted: 29 March 2013 / Published: 8 April 2013
(This article belongs to the Special Issue Abiotic and Biotic Stress Tolerance Mechanisms in Plants)
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Abstract

Studying plant stress responses is an important issue in a world threatened by global warming. Unfortunately, comparative analyses are hampered by varying experimental setups. In contrast, the AtGenExpress abiotic stress experiment displays intercomparability. Importantly, six of the nine stresses (wounding, genotoxic, oxidative, UV-B light, osmotic and salt) can be examined for their capacity to generate systemic signals between the shoot and root, which might be essential to regain homeostasis in Arabidopsis thaliana. We classified the systemic responses into two groups: genes that are regulated in the non-treated tissue only are defined as type I responsive and, accordingly, genes that react in both tissues are termed type II responsive. Analysis of type I and II systemic responses suggest distinct functionalities, but also significant overlap between different stresses. Comparison with salicylic acid (SA) and methyl-jasmonate (MeJA) responsive genes implies that MeJA is involved in the systemic stress response. Certain genes are predominantly responding in only one of the categories, e.g., WRKY genes respond mainly non-systemically. Instead, genes of the plant core environmental stress response (PCESR), e.g., ZAT10, ZAT12, ERD9 or MES9, are part of different response types. Moreover, several PCESR genes switch between the categories in a stress-specific manner. View Full-Text
Keywords: microarray; type I and type II systemic response; AtGenExpress abiotic stress experiment; plant core environmental stress response (PCESR); jasmonic acid; transcriptome microarray; type I and type II systemic response; AtGenExpress abiotic stress experiment; plant core environmental stress response (PCESR); jasmonic acid; transcriptome
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Hahn, A.; Kilian, J.; Mohrholz, A.; Ladwig, F.; Peschke, F.; Dautel, R.; Harter, K.; Berendzen, K.W.; Wanke, D. Plant Core Environmental Stress Response Genes Are Systemically Coordinated during Abiotic Stresses. Int. J. Mol. Sci. 2013, 14, 7617-7641.

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