The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens

Hedtmann C, Guo W, Reifschneider E, Heiber I, Hiltscher H, van Buer J, Barsch A, Niehaus K, Rowan B, Lortzing T, Steppuhn A, et al. (2017)
FRONTIERS IN PLANT SCIENCE 8: 1650.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The redox imbalanced 6 mutant (rimb6) of Arabidopsis thaliana was isolated in a genetic screening approach for mutants with defects in chloroplast-to-nucleus redox signaling. It has an atypically low activation status of the 2-Cys peroxiredoxin-A promoter in the seedling stage. rimb6 shows wildtype-like germination, seedling development and greening, but slower growth and reduced biomass in the rosette stage. Mapping of the casual mutation revealed that rimb6 carries a single nucleotide polymorphism in the gene encoding CONSTITUTIVE EXPRESSER OF PATHOGENESIS RELATED (PR) GENES 1, CPR1 (At4g12560), leading to a premature stop codon. CPR1 is known as a repressor of pathogen signaling and regulator of microtubule organization. Allelism of rimb6 and cprl revealed a function of CPR1 in chloroplast stress protection. Expression studies in pathogen signaling mutants demonstrated that CPR1-mediated activation of genes for photosynthesis and chloroplast antioxidant protection is, in contrast to activation of pathogen responses, regulated independently from PAD4-controlled salicylic acid (SA) accumulation. We conclude that the support of plastid function is a basic, SA-independent function of CPR1.
Stichworte
Arabidopsis; chloroplast; CPR1; reactive oxygen species; redox; imbalanced mutant; signaling
Erscheinungsjahr
2017
Zeitschriftentitel
FRONTIERS IN PLANT SCIENCE
Band
8
Art.-Nr.
1650
ISSN
1664-462X
Page URI
https://pub.uni-bielefeld.de/record/2916464

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Hedtmann C, Guo W, Reifschneider E, et al. The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens. FRONTIERS IN PLANT SCIENCE. 2017;8: 1650.
Hedtmann, C., Guo, W., Reifschneider, E., Heiber, I., Hiltscher, H., van Buer, J., Barsch, A., et al. (2017). The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens. FRONTIERS IN PLANT SCIENCE, 8, 1650. doi:10.3389/fpls.2017.01650
Hedtmann, C., Guo, W., Reifschneider, E., Heiber, I., Hiltscher, H., van Buer, J., Barsch, A., Niehaus, K., Rowan, B., Lortzing, T., et al. (2017). The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens. FRONTIERS IN PLANT SCIENCE 8:1650.
Hedtmann, C., et al., 2017. The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens. FRONTIERS IN PLANT SCIENCE, 8: 1650.
C. Hedtmann, et al., “The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens”, FRONTIERS IN PLANT SCIENCE, vol. 8, 2017, : 1650.
Hedtmann, C., Guo, W., Reifschneider, E., Heiber, I., Hiltscher, H., van Buer, J., Barsch, A., Niehaus, K., Rowan, B., Lortzing, T., Steppuhn, A., Baier, M.: The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens. FRONTIERS IN PLANT SCIENCE. 8, : 1650 (2017).
Hedtmann, Christiane, Guo, Wei, Reifschneider, Elena, Heiber, Isabelle, Hiltscher, Heiko, van Buer, Joern, Barsch, Aiko, Niehaus, Karsten, Rowan, Beth, Lortzing, Tobias, Steppuhn, Anke, and Baier, Margarete. “The Plant Immunity Regulating F-Box Protein CPR1 Supports Plastid Function in Absence of Pathogens”. FRONTIERS IN PLANT SCIENCE 8 (2017): 1650.

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