ArticlePlant molecular biology2009
The tomato brassinosteroid receptor BRI1 increases binding of systemin to tobacco plasma membranes, but is not involved in systemin signaling.
Article in Plant molecular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 61 citations in OpenAlex.
- Plant Elicitor Peptide (Pep) Signaling and Pathogen Defense in Tomato.Plants (Basel, Switzerland) · 2023Review
- Small Signals Lead to Big Changes: The Potential of Peptide-Induced Resistance in Plants.Journal of fungi (Basel, Switzerland) · 2023Review
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- Utilizing Proteomic Approach to Analyze Potential Antioxidant Proteins in Plant against Irradiation.Antioxidants (Basel, Switzerland) · 2022Article
- Perception of Damaged Self in Plants.Plant physiology · 2020Review
- A novel single-base mutation in CaBRI1 confers dwarf phenotype and brassinosteroid accumulation in pepper.Molecular genetics and genomics : MGG · 2020Article
- Arabidopsis Plants Sense Non-self Peptides to Promote Resistance AgainstFrontiers in plant science · 2020Article
- Brassinosteroid Signaling in Plant⁻Microbe Interactions.International journal of molecular sciences · 2018Review
- Tomato PEPR1 ORTHOLOG RECEPTOR-LIKE KINASE1 Regulates Responses to Systemin, Necrotrophic Fungi, and Insect Herbivory.The Plant cell · 2018Article
- Article
- The Arabidopsis Pep-PEPR system is induced by herbivore feeding and contributes to JA-mediated plant defence against herbivory.Journal of experimental botany · 2015Article
- Surveying the potential of secreted antimicrobial peptides to enhance plant disease resistance.Frontiers in plant science · 2015Review
- Kinase domain-targeted isolation of defense-related receptor-like kinases (RLK/Pelle) in Platanus×acerifolia: phylogenetic and structural analysis.BMC research notes · 2014Article
- Understanding of Leaf Development-the Science of Complexity.Plants (Basel, Switzerland) · 2013Review
- The tomato RLK superfamily: phylogeny and functional predictions about the role of the LRRII-RLK subfamily in antiviral defense.BMC plant biology · 2012Article
- Recent advances in tomato functional genomics: utilization of VIGS.Protoplasma · 2012Review
- The shoot apical meristem regulatory peptide CLV3 does not activate innate immunity.The Plant cell · 2012Article
- The RLK/Pelle family of kinases.The Plant journal : for cell and molecular biology · 2011Review
- Ca2+ signaling by plant Arabidopsis thaliana Pep peptides depends on AtPepR1, a receptor with guanylyl cyclase activity, and cGMP-activated Ca2+ channels.Proceedings of the National Academy of Sciences of the United States of America · 2010Article
- Tissue-type specific systemin perception and the elusive systemin receptor.Plant signaling & behavior · 2010Article
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The tomato wound signal systemin is perceived by a specific high-affinity, saturable, and reversible cell surface receptor. This receptor was identified as the receptor-like kinase SR160, which turned out to be identical to the brassinosteroid receptor BRI1. Recently, it has been shown that the tomato bri1 null mutant cu3 is as sensitive to systemin as wild type plants. Here we explored these contradictory findings by studying the responses of tobacco plants (Nicotiana tabacum) to systemin. A fluorescently-labeled systemin analog bound specifically to plasma membranes of tobacco suspension-cultured cells that expressed the tomato BRI1-FLAG transgene, but not to wild type tobacco cells. On the other hand, signaling responses to systemin, such as activation of mitogen-activated protein kinases and medium alkalinization, were neither increased in BRI1-FLAG-overexpressing tobacco cells nor decreased in BRI1-silenced cells as compared to levels in untransformed control cells. Furthermore, in transgenic tobacco plants BRI1-FLAG became phosphorylated on threonine residues in response to brassinolide application, but not in response to systemin. When BRI1 transcript levels were reduced by virus-induced gene silencing in tomato plants, the silenced plants displayed a phenotype characteristic of bri1 mutants. However, their response to overexpression of the Prosystemin transgene was the same as in control plants. Taken together, our data suggest that BRI1 can function as a systemin binding protein, but that binding of the ligand does not transduce the signal into the cell. This unusual behavior and the nature of the elusive systemin receptor will be discussed.
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