Cited by 861Plant Molecular Biology ResearchDevelopmental Biology and Gene RegulationPlant nutrient uptake and metabolism

Cell Signalling by MicroRNA165/6 Directs Gene Dose-Dependent Root Cell Fate

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Carlsbecker, Annelie, Lee, Ji-Young, Roberts, Christina J., Dettmer, Jan, Lehesranta, Satu, Zhou, Jing, Lindgren, Ove, Moreno-Risueno, Miguel A. +7 more·2010·Nature

Abstract

A key question in developmental biology is how cells exchange positional information for proper patterning during organ development. In plant roots the radial tissue organization is highly conserved with a central vascular cylinder in which two water conducting cell types, protoxylem and metaxylem, are patterned centripetally. We show that this patterning occurs through crosstalk between the vascular cylinder and the surrounding endodermis mediated by cell-to-cell movement of a transcription factor in one direction and microRNAs in the other. SHORT ROOT, produced in the vascular cylinder, moves into the endodermis to activate SCARECROW. Together these transcription factors activate MIR165a and MIR166b. Endodermally produced microRNA165/6 then acts to degrade its target mRNAs encoding class III homeodomain-leucine zipper transcription factors in the endodermis and stele periphery. The resulting differential distribution of target mRNA in the vascular cylinder determines xylem cell types in a dosage-dependent manner.

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  • Small RNA pathways, especially microRNAs (miRNAs) and small interfering RNAs (siRNAs), play a vital role in regulating gene expression at transcriptional and post-transcriptional levels, influencing processes such as cell fate in eukaryotes.

    “Another key epigenetic mechanism involves small RNA pathways, especially microRNAs (miRNAs) and small interfering RNAs (siRNAs), which play a vital role in regulating gene expression at both transcriptional and post-transcriptional levels, influencing essential processes such as cell fate in eukaryotes [59,60].”

    From Somaclonal Variation and Clonal Fidelity in Commercial Micropropagation: Challenges and Perspectives (2025) · cites this paper as [59]

    The Discussion (page not supplied) describes a pathway integrating transcriptional and post-transcriptional regulation in Arabidopsis root patterning, with miR165/6 regulating a target mRNA. The Xylem patterning requires PHB restriction section (page not supplied) says xylem patterning is primarily mediated by miRNAs, not siRNAs. The paper therefore supports the miRNA-and-cell-fate portion, but not the broader attribution that both miRNAs and siRNAs regulate gene expression at both levels across eukaryotes. (LLM, conf=0.86)

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Authors
Carlsbecker, A., Lee, J.-Y., Roberts, C. J., Dettmer, J., Lehesranta, S., Zhou, J., Lindgren, O., Moreno-Risueno, M. A., Vatén, A., Thitamadee, S., Campilho, A., Sebastian, J., Bowman, J. L., Helariutta, Y., & Benfey, P. N.
Affiliations
  • University of Helsinki (FI)
  • Cornell University (US)
  • Uppsala University (SE)
  • Monash University (AU)
  • Duke University (US)
Corresponding author
  • Helariutta, Ykä
  • Benfey, Philip N.
Venue
Nature
Published
2010-04-21
Volume
465
Issue
7296
Pages
316-321
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2083540641
Cited by
861
References
42
Citations by year
2026: 32 · 2025: 31 · 2024: 36 · 2023: 39 · 2022: 58 · 2021: 57 · 2020: 67 · 2019: 53 · 2018: 45 · 2017: 54 · 2016: 55 · 2015: 65 · 2014: 57 · 2013: 65 · 2012: 61
FWCI
81.61
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
Funders
National Institute of General Medical Sciences (R01GM043778)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant nutrient uptake and metabolism
Keywords
SHORT-ROOT, scarecrow, protoxylem, metaxylem, endodermis, vascular cylinder, positional information, root development, Arabidopsis thaliana
MeSH terms
Cell Movement, Endoderm, Transcription Factors, Signal Transduction, Arabidopsis, Gene Expression Regulation, Plant, Plant Roots, Gene Dosage, RNA, Plant, Cell Lineage, Body Patterning, Arabidopsis Proteins, RNA Transport, MicroRNAs, Organogenesis, Xylem

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