Dataset Information


Expression data from low R:FR - SA crosstalk in Arabidopsis

ABSTRACT: Low R:FR signaling through phytochromes induces shade avoidance responses, including petiole elongation. Salicylic acid-mediated defense against pathogens is inhibited under these conditions. Using microarrays we studied the crosstalk between low R:FR and SA at the global gene expression level in Arabidopsis thaliana. Plants were exposed for 2 h. to the following treatments: high R/FR with mock spray, low R/FR with mock spray, high R/FR with SA spray, low R/FR with SA spray. Gene expression was determined in petioles.

ORGANISM(S): Arabidopsis thaliana  

SUBMITTER: Mieke de Wit   Ronald Pierik 

PROVIDER: E-GEOD-45728 | ArrayExpress | 2013-04-03



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Perception of low red:far-red ratio compromises both salicylic acid- and jasmonic acid-dependent pathogen defences in Arabidopsis.

de Wit Mieke M   Spoel Steven H SH   Sanchez-Perez Gabino F GF   Gommers Charlotte M M CMM   Pieterse Corné M J CMJ   Voesenek Laurentius A C J LACJ   Pierik Ronald R  

The Plant journal : for cell and molecular biology 20130522 1

In dense stands of plants, such as agricultural monocultures, plants are exposed simultaneously to competition for light and other stresses such as pathogen infection. Here, we show that both salicylic acid (SA)-dependent and jasmonic acid (JA)-dependent disease resistance is inhibited by a simultaneously reduced red:far-red light ratio (R:FR), the early warning signal for plant competition. Conversely, SA- and JA-dependent induced defences did not affect shade-avoidance responses to low R:FR. R  ...[more]

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