Transcriptional regulation of the CRK/DUF26 group of receptor-like protein kinases by ozone and plant hormones in Arabidopsis
| Autor: | Mikael Brosché, Niina Idänheimo, Saijaliisa Kangasjärvi, Jaakko Kangasjärvi, Barbara Karpinska, Stanislaw Karpinski, Michael Wrzaczek, Sophia Mersmann, Jarkko Salojärvi, Silke Robatzek |
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| Přispěvatelé: | Biosciences, Receptor-Ligand Signaling Group, Plant stress and natural variation, Plant ROS-Signalling |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Chloroplasts Light Transcription Genetic 411 Agriculture and forestry education Arabidopsis Plant Science Biology 01 natural sciences 03 medical and health sciences Ozone Plant Growth Regulators Gene Expression Regulation Plant lcsh:Botany Botany Transcriptional regulation 311 Basic medicine Promoter Regions Genetic 030304 developmental biology 219 Environmental biotechnology Oligonucleotide Array Sequence Analysis Respiratory Burst Regulation of gene expression 0303 health sciences 318 Medical biotechnology Kinase Abiotic stress Arabidopsis Proteins fungi Biotic stress biology.organism_classification Elicitor Cell biology lcsh:QK1-989 Oxidative Stress RNA Plant 519 Social and economic geography Signal transduction 118 Biological sciences Reactive Oxygen Species Protein Kinases 010606 plant biology & botany Signal Transduction Research Article |
| Zdroj: | BMC Plant Biology BMC Plant Biology, Vol 10, Iss 1, p 95 (2010) |
| ISSN: | 1471-2229 |
| Popis: | Background Plant Receptor-like/Pelle kinases (RLK) are a group of conserved signalling components that regulate developmental programs and responses to biotic and abiotic stresses. One of the largest RLK groups is formed by the Domain of Unknown Function 26 (DUF26) RLKs, also called Cysteine-rich Receptor-like Kinases (CRKs), which have been suggested to play important roles in the regulation of pathogen defence and programmed cell death. Despite the vast number of RLKs present in plants, however, only a few of them have been functionally characterized. Results We examined the transcriptional regulation of all Arabidopsis CRKs by ozone (O3), high light and pathogen/elicitor treatment - conditions known to induce the production of reactive oxygen species (ROS) in various subcellular compartments. Several CRKs were transcriptionally induced by exposure to O3 but not by light stress. O3 induces an extracellular oxidative burst, whilst light stress leads to ROS production in chloroplasts. Analysis of publicly available microarray data revealed that the transcriptional responses of the CRKs to O3 were very similar to responses to microbes or pathogen-associated molecular patterns (PAMPs). Several mutants altered in hormone biosynthesis or signalling showed changes in basal and O3-induced transcriptional responses. Conclusions Combining expression analysis from multiple treatments with mutants altered in hormone biosynthesis or signalling suggest a model in which O3 and salicylic acid (SA) activate separate signaling pathways that exhibit negative crosstalk. Although O3 is classified as an abiotic stress to plants, transcriptional profiling of CRKs showed strong similarities between the O3 and biotic stress responses. |
| Databáze: | OpenAIRE |
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