2014
DOI: 10.1073/pnas.1404680111
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Rice SPX1 and SPX2 inhibit phosphate starvation responses through interacting with PHR2 in a phosphate-dependent manner

Abstract: In plants, sensing the levels of external and internal nutrients is essential for reprogramming the transcriptome and adapting to the fluctuating environment. Phosphate (Pi) is a key plant nutrient, and a large proportion of Pi starvation-responsive genes are under the control of PHOSPHATE STARVATION RESPONSE REGULATOR 1 (PHR1) in Arabidopsis (AtPHR1) and its homologs, such as Oryza sativa (Os)PHR2 in rice. AtPHR1 and OsPHR2 expression is not very responsive to Pi starvation, raising the question as to how pla… Show more

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Cited by 358 publications
(355 citation statements)
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“…Thus, CK2, PHO2, and NLA generate a negative feedback loop for the regulation of PT activity according to plant Pi status. Such a negative loop is paralleled by a similar feedback mechanism for transcriptional control generated between the PHR1 master regulator of Pi starvation responses and several SPX proteins (Lv et al, 2014;Puga et al, 2014;Wang et al, 2014).…”
Section: Phosphorylation Of Pts Is Dependent On Pi Supplymentioning
confidence: 99%
“…Thus, CK2, PHO2, and NLA generate a negative feedback loop for the regulation of PT activity according to plant Pi status. Such a negative loop is paralleled by a similar feedback mechanism for transcriptional control generated between the PHR1 master regulator of Pi starvation responses and several SPX proteins (Lv et al, 2014;Puga et al, 2014;Wang et al, 2014).…”
Section: Phosphorylation Of Pts Is Dependent On Pi Supplymentioning
confidence: 99%
“…Similarly, a group of PHR TFs has similar functions in regulating the Pi starvation response by binding to the P1BS motif to regulate downstream genes that function in these responses (Rubio et al, 2001;Zhou et al, 2008;Bustos et al, 2010;Liu et al, 2010;Wang et al, 2014). Although all three OsPHRs take part in the same Pi regulatory pathway, there are clear differences between them.…”
Section: Phr1 Phr2 and Phr3 Show Functional Diversitymentioning
confidence: 99%
“…The Pi starvation-induced or -repressed genes were referred from published microarray analysis data (accession no. GSE60823; Wang et al, 2014).…”
Section: Microarray Analysismentioning
confidence: 99%
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