ArticlePlant signaling & behavior2015
N-terminal modifications contribute to flowering time and immune response regulations.
Article in Plant signaling & behavior, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 6 citations in OpenAlex.
- Acylamino acid-releasing enzyme, a bifunctional protease with a potential role in aging.Journal of experimental botany · 2025Review
- New beginnings and new ends: methods for large-scale characterization of protein termini and their use in plant biology.Journal of experimental botany · 2019Review
- Sumoylation, Phosphorylation, and Acetylation Fine-Tune the Turnover of Plant Immunity Components Mediated by Ubiquitination.Frontiers in plant science · 2017Review
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A variety of N-terminal co-translational modifications play crucial roles in many cellular processes across eukaryotic organisms. Recently, N-terminal acetylation has been proposed as a regulatory mechanism for the control of plant immunity. Analysis of an N-terminal acetyltransferase complex A (NatA) mutant, naa15-1, revealed that NatA controls the stability of immune receptor Suppressor of NPR1, Constitutive 1 (SNC1) in an antagonistic fashion with NatB. Here, we further report on an antagonistic regulation of flowering time by NatA and NatB, where naa15-1 plants exhibit late flowering, opposite of the early flowering phenotype previously observed in natB mutants. In addition, we provide evidence for the involvement of another N-terminal modification, N-myristoylation, in controlling pathogen-associated molecular pattern (PAMP) triggered immunity (PTI) through the characterization of N-myristoyltransferase 1 (NMT1) defective mutants, which express a low level of NMT1 protein. The mutant line lacks induced production of reactive oxygen species and MAP kinase phosphorylation in response to treatment with the known immune elicitor flg22. NMT1 deficient plants also exhibit increased susceptibility to Pst hrcC, a non-pathogenic Pseudomonas syringae tomato strain lacking a functional type-III secretion system. The potential for the NatA-NatB antagonistic relationship to exist outside of the regulation of SNC1 as well as the disclosing of NMT1s role in PTI further supports the significant contribution of N-terminal co-translational modifications in the regulation of biological processes in plants, and present interesting areas for further exploration.
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