Dynamic changes in mRNA nucleocytoplasmic localization in the nitrate response of Arabidopsis roots
Year: 2024
Type: article
Abstract: 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.
Source: Plant Cell & Environment
DOI: 10.1111/pce.15018
Language: English
Subfield: Plant Science
Domain: Life Sciences
Open Access status: bronze
Funders: National Science Foundation, Institut Català de Nanociència i Nanotecnologia, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Sveriges Lantbruksuniversitet, Pontificia Universidad Católica de Chile, Agencia Nacional de Investigación y Desarrollo, Comisión Nacional de Investigación Científica y Tecnológica
Awards: G2878874739, G3288501125, Elucidating the role of the 3D genome organization during Polycomb-mediated gene silencing in plants, IDENTIFICACION DE REGULADORES DE RESPUESTA A SEQUIA MEDIANTE REDES REGULATORIAS CONSERVADAS EN PLANTAS, G5186520474, G5284675477, GENE REGULATORY CIRCUITRY CONTROLLING DYNAMIC PLANT RESPONSES TO DROUGHT, NITRATE REGULATORY NETWORKS CONTROLLING EARLY POST-EMBRYONIC PLANT GROWTH., SINGLE-CELL RNA SEQUENCING TO DISSECT CELL-TYPE REGULATORY NETWORKS CONTROLLING ARABIDOPSIS SHOOT GROWTH IN RESPONSE TO NITRATE, G712881263, RESEARCH-PGR: Uncovering the molecular mechanisms that integrate nutrient and water dose sensing and impact crop production
OpenAlex ID: W4400189077