Dynamic changes in mRNA nucleocytoplasmic localization in the nitrate response of Arabidopsis roots.

Autor: Fonseca A; Millennium Institute for Integrative Biology (iBio), Santiago, Chile.; Center for Genome Regulation, Millennium Institute Center for Genome Regulation (CRG), Santiago, Chile.; Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.; Department of Plant Biology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden., Riveras E; Millennium Institute for Integrative Biology (iBio), Santiago, Chile.; Center for Genome Regulation, Millennium Institute Center for Genome Regulation (CRG), Santiago, Chile.; Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile., Moyano TC; Millennium Institute for Integrative Biology (iBio), Santiago, Chile.; Center for Genome Regulation, Millennium Institute Center for Genome Regulation (CRG), Santiago, Chile.; Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.; Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile., Alvarez JM; Millennium Institute for Integrative Biology (iBio), Santiago, Chile.; Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile., Rosa S; Department of Plant Biology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden., Gutiérrez RA; Millennium Institute for Integrative Biology (iBio), Santiago, Chile.; Center for Genome Regulation, Millennium Institute Center for Genome Regulation (CRG), Santiago, Chile.; Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2024 Nov; Vol. 47 (11), pp. 4227-4245. Date of Electronic Publication: 2024 Jul 01.
DOI: 10.1111/pce.15018
Abstrakt: Nitrate is a nutrient and signal that regulates gene expression. The nitrate response has been extensively characterized at the organism, organ, and cell-type-specific levels, but intracellular mRNA dynamics remain unexplored. To characterize nuclear and cytoplasmic transcriptome dynamics in response to nitrate, we performed a time-course expression analysis after nitrate treatment in isolated nuclei, cytoplasm, and whole roots. We identified 402 differentially localized transcripts (DLTs) in response to nitrate treatment. Induced DLT genes showed rapid and transient recruitment of the RNA polymerase II, together with an increase in the mRNA turnover rates. DLTs code for genes involved in metabolic processes, localization, and response to stimulus indicating DLTs include genes with relevant functions for the nitrate response that have not been previously identified. Using single-molecule RNA FISH, we observed early nuclear accumulation of the NITRATE REDUCTASE 1 (NIA1) transcripts in their transcription sites. We found that transcription of NIA1, a gene showing delayed cytoplasmic accumulation, is rapidly and transiently activated; however, its transcripts become unstable when they reach the cytoplasm. Our study reveals the dynamic localization of mRNAs between the nucleus and cytoplasm as an emerging feature in the temporal control of gene expression in response to nitrate treatment in Arabidopsis roots.
(© 2024 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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