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Article

Involvement of OsSPX1 in phosphate homeostasis in rice.

The Plant journal : for cell and molecular biology - 1 Mar 2009

Wang Chuang, Ying Shan, Huang Hongjie, Li Kuan, Wu Ping, Shou Huixia

Abstract excerpt

Arabidopsis thaliana SPX (SYG/PHO81/XPR1) domain genes have recently been shown to be involved in the phosphate (Pi) signaling pathway. We show here that a rice (Oryza sativa) SPX gene, OsSPX1, is specifically induced by Pi starvation in roots. Suppression of OsSPX1 by RNA interference resulted in severe signs of toxicity caused by the over-accumulation of Pi, similar to that found in OsPHR2 (phosphate starvation...

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Source

Identifiers

PMID: 19000161
DOI: 10.1111/j.1365-313X.2008.03734.x

Genes

SPX
XPR1

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

Related research

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Involvement of OsSPX1 in phosphate homeostasis in rice.PMID 19000161Read ↗

OsSPX1 suppresses the function of OsPHR2 in the regulation of expression of OsPT2 and phosphate homeostasis in shoots of rice.Semantic proximity Read ↗

Functional characterization of the rice SPX-MFS family reveals a key role of OsSPX-MFS1 in controlling phosphate homeostasis in leaves.Semantic proximity Read ↗

OsCYCP1;1, a PHO80 homologous protein, negatively regulates phosphate starvation signaling in the roots of rice (Oryza sativa L.).Semantic proximity Read ↗

SPX1 is a phosphate-dependent inhibitor of Phosphate Starvation Response 1 in Arabidopsis.Semantic proximity Read ↗

Integrative Comparison of the Role of the PHOSPHATE RESPONSE1 Subfamily in Phosphate Signaling and Homeostasis in Rice.Semantic proximity Read ↗

OsbHLH6 interacts with OsSPX4 and regulates the phosphate starvation response in rice.Semantic proximity Read ↗

A constitutive expressed phosphate transporter, OsPht1;1, modulates phosphate uptake and translocation in phosphate-replete rice.Semantic proximity Read ↗

Characterization of the rice PHO1 gene family reveals a key role for OsPHO1;2 in phosphate homeostasis and the evolution of a distinct clade in dicotyledons.Semantic proximity Read ↗

Auxin response factor (OsARF12), a novel regulator for phosphate homeostasis in rice (Oryza sativa).Semantic proximity Read ↗

OsSIZ1, a SUMO E3 Ligase Gene, is Involved in the Regulation of the Responses to Phosphate and Nitrogen in Rice.Semantic proximity Read ↗

Increased expression of the MYB-related transcription factor, PHR1, leads to enhanced phosphate uptake in Arabidopsis thaliana.Semantic proximity Read ↗

The THO/TREX Complex Active in miRNA Biogenesis Negatively Regulates Root-Associated Acid Phosphatase Activity Induced by Phosphate Starvation.Semantic proximity Read ↗

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