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Control of Jasmonate Biosynthesis and Senescence by miR319 Targets

Open access
Schommer, Carla, Palatnik, Javier F, Aggarwal, Pooja, Chételat, Aurore, Cubas, Pilar, Farmer, Edward E, Nath, Utpal, Weigel, Detlef·2008·PLoS Biology

Abstract

Considerable progress has been made in identifying the targets of plant microRNAs, many of which regulate the stability or translation of mRNAs that encode transcription factors involved in development. In most cases, it is unknown, however, which immediate transcriptional targets mediate downstream effects of the microRNA-regulated transcription factors. We identified a new process controlled by the miR319-regulated clade of TCP (TEOSINTE BRANCHED/CYCLOIDEA/PCF) transcription factor genes. In contrast to other miRNA targets, several of which modulate hormone responses, TCPs control biosynthesis of the hormone jasmonic acid. Furthermore, we demonstrate a previously unrecognized effect of TCPs on leaf senescence, a process in which jasmonic acid has been proposed to be a critical regulator. We propose that miR319-controlled TCP transcription factors coordinate two sequential processes in leaf development: leaf growth, which they negatively regulate, and leaf senescence, which they positively regulate.

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Metadata

Authors
Schommer, C., Palatnik, J. F., Aggarwal, P., Chételat, A., Cubas, P., Farmer, E. E., Nath, U., & Weigel, D.
Venue
PLoS Biology
Published
2008-09-23
Volume
6
Issue
9
Pages
e230
ISSN
  • 1544-9173 (ISSN-L)
  • 1545-7885
OpenAlex
W2054012543
Cited by
865
References
2
FWCI
34.32
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Control of Jasmonate Biosynthesis and Senescence by miR319 Targets. https://app.cochat.ai/papers/10.1371/journal.pbio.0060230
The paper
Schommer, C., Palatnik, J. F., Aggarwal, P., Chételat, A., Cubas, P., Farmer, E. E., Nath, U., & Weigel, D. (2008). Control of Jasmonate Biosynthesis and Senescence by miR319 Targets. PLoS Biology. https://doi.org/10.1371/journal.pbio.0060230

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.