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Cited by 331

The DOI matches its Crossref record; 54 of the 54 references it cites were found in a registry or an index.

Dissection of local and systemic transcriptional responses to phosphate starvation in Arabidopsis: Local versus systemic responses to phosphate starvation

Thibaud, Marie-Christine, Arrighi, Jean-François, Bayle, Vincent, Chiarenza, Serge, Creff, Audrey, Bustos, Regla, Paz-Ares, Javier, Poirier, Yves, Nussaume, Laurent·2010·The Plant Journal

Abstract

Phosphate is a crucial and often limiting nutrient for plant growth. To obtain inorganic phosphate (P(i) ), which is very insoluble, and is heterogeneously distributed in the soil, plants have evolved a complex network of morphological and biochemical processes. These processes are controlled by a regulatory system triggered by P(i) concentration, not only present in the medium (external P(i) ), but also inside plant cells (internal P(i) ). A 'split-root' assay was performed to mimic a heterogeneous environment, after which a transcriptomic analysis identified groups of genes either locally or systemically regulated by P(i) starvation at the transcriptional level. These groups revealed coordinated regulations for various functions associated with P(i) starvation (including P(i) uptake, P(i) recovery, lipid metabolism, and metal uptake), and distinct roles for members in gene families. Genetic tools and physiological analyses revealed that genes that are locally regulated appear to be modulated mostly by root development independently of the internal P(i) content. By contrast, internal P(i) was essential to promote the activation of systemic regulation. Reducing the flow of P(i) had no effect on the systemic response, suggesting that a secondary signal, independent of P(i) , could be involved in the response. Furthermore, our results display a direct role for the transcription factor PHR1, as genes systemically controlled by low P(i) have promoters enriched with P1BS motif (PHR1-binding sequences). These data detail various regulatory systems regarding P(i) starvation responses (systemic versus local, and internal versus external P(i) ), and provide tools to analyze and classify the effects of P(i) starvation on plant physiology.

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Metadata

Authors
Thibaud, M.-C., Arrighi, J.-F., Bayle, V., Chiarenza, S., Creff, A., Bustos, R., Paz-Ares, J., Poirier, Y., & Nussaume, L.
Venue
The Plant Journal
Publisher
Wiley
Published
2010-11-02
Volume
64
Issue
5
Pages
775-789
ISSN
0960-7412 (ISSN-L)
OpenAlex
W2128977008
Cited by
331
References
54
FWCI
19.65
Type
journal article
Language
en
Open access
closed

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Thibaud, M.-C., Arrighi, J.-F., Bayle, V., Chiarenza, S., Creff, A., Bustos, R., Paz-Ares, J., Poirier, Y., & Nussaume, L. (2010). Dissection of local and systemic transcriptional responses to phosphate starvation in Arabidopsis: Local versus systemic responses to phosphate starvation. The Plant Journal. https://doi.org/10.1111/j.1365-313x.2010.04375.x

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