Elevated Temperature Differentially Influences Effector-Triggered Immunity Outputs in Arabidopsis
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Date
2015-11-09
Publication Type
Journal Article
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Abstract
Pseudomonas syringae is a Gram-negative bacterium that infects multiple plant species
by manipulating cellular processes via injection of type three secreted effectors (T3SEs)
into host cells. Nucleotide-binding leucine-rich repeat (NLR) resistance (R) proteins
recognize specific T3SEs and trigger a robust immune response, called effector-triggered
immunity (ETI), which limits pathogen proliferation and is often associated with localized
programmed cell death, known as the hypersensitive response (HR). In this study, we
examine the influence of elevated temperature on two ETI outputs: HR and pathogen
virulence suppression. We found that in the Arabidopsis thaliana accession Col-0,
elevated temperatures suppress the HR, but have minimal influence on ETI-associated
P. syringae virulence suppression, thereby uncoupling these two ETI responses. We also
identify accessions of Arabidopsis that exhibit impaired P. syringae virulence suppression
at elevated temperature, highlighting the natural variation that exists in coping with
biotic and abiotic stresses. These results not only reinforce the influence of abiotic
factors on plant immunity but also emphasize the importance of carefully documented
environmental conditions in studies of plant immunity.
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published
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Journal / series
Volume
6
Pages / Article No.
995
Publisher
Frontiers Media
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Edition / version
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Date collected
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Subject
Arabidopsis thaliana; Pseudomonas syringae; effector-triggered immunity; hypersensitive response; Elevated temperature; Abiotic stress; Programmed cell death; Disease resistance
Organisational unit
09530 - Sánchez-Rodríguez, Clara (ehemalig) / Sánchez-Rodríguez, Clara (former)