Auxin response factor (Os<scp>ARF</scp>12), a novel regulator for phosphate homeostasis in rice (<i>Oryza sativa</i>)

Wang, Suikang; Zhang, SaiNa; Sun, Chendong; Xu, Yan-Xia; Chen, Yue; Yu, Chenliang; Qian, Qian; Jiang, Dongxiang; Qi, Yanhua

doi:10.1111/nph.12499

Cited by 118 publications

(83 citation statements)

References 59 publications

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“…This explaines the lower DM yield in Fe-enriched media when compare with media without Fe oxides. However, increasing root growth is a common plant strategy for improving P uptake in P-deficient media (Sun et al 2014, Wang et al 2014; also, it is consistent with the positive relationship between root DM and P uptake by plants in observed this work. The increase in root DM resulting from the presence of B. subtilis was independent on any factors affecting P availability in the growing medium (viz., P source or ferrihydrite).…”

Section: Resultssupporting

confidence: 77%

Effect of Bacillus subtilis on phosphorus uptake by cucumber as affected by iron oxides and the solubility of the phosphorus source

García‐López

Delgado

2016

AFSci

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In this work, we examined the effects of Bacillus subtilis strain QST713 by assessing plant P uptake from variably P compounds. The experiment performed involved three factors: (i) P source (KH 2 PO4 at 100 mg kg -1 , and phosphate rock [PR] at 100 or 200 mg kg -1 ); (ii) plant inoculation with QST713 (inoculated and non-inoculated); and (iii) Fe oxide (ferrihydrite) in the growth medium (0 or 300 mg kg -1 concentration of citrate-ascorbate-extractable Fe). Ferrihydrite decreased dry matter yield in plants by more than 50 %. Inoculation with QST713 increased plant growth, and total accumulation of P by plants and P uptake, estimated as the total P in aerial parts and roots minus P present in seeds. Overall, QST713 increased P uptake by 40 %, the effect being independent of the presence of ferrihydrite and P source. The increased P uptake observed can be ascribed to solubilization of P and to increased root growth. Therefore, QST713 improves P nutrition in plants grown on media with a high P adsorption capacity irrespective of the solubility of the P compound.

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Section: Resultssupporting

confidence: 77%

Effect of Bacillus subtilis on phosphorus uptake by cucumber as affected by iron oxides and the solubility of the phosphorus source

García‐López

Delgado

2016

AFSci

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“…Accordingly, some knockout lines of auxin response factor (ARF) genes impair root growth under low Pi supply. In the osarf12 and osarf12/ 25 mutants, the PR elongation was more responsive to Pi deficiency than the wild type (Wang et al, 2014b). …”

Section: Pr Response In Monocot Speciesmentioning

confidence: 95%

Root Architecture Responses: In Search of Phosphate

Péret¹,

Desnos²,

Jost³

et al. 2014

Plant Physiol.

219

141

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Soil phosphate represents the only source of phosphorus for plants and, consequently, is its entry into the trophic chain. This major component of nucleic acids, phospholipids, and energy currency of the cell (ATP) can limit plant growth because of its low mobility in soil. As a result, root responses to low phosphate favor the exploration of the shallower part of the soil, where phosphate tends to be more abundant, a strategy described as topsoil foraging. We will review the diverse developmental strategies that can be observed among plants by detailing the effect of phosphate deficiency on primary and lateral roots. We also discuss the formation of cluster roots: an advanced adaptive strategy to cope with low phosphate availability observed in a limited number of species. Finally, we will put this work into perspective for future research directions.

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“…Recently, it has been reported that OsARF12 was involved in Pi homeostasis and that OsARF16 facilitated the efficient utilization of Pi in rice [28], [29]. However, the underlying mechanism linking auxin/cytokinin and Pi signaling is largely unknown.…”

Section: Introductionmentioning

confidence: 99%

OsARF16 Is Involved in Cytokinin-Mediated Inhibition of Phosphate Transport and Phosphate Signaling in Rice (Oryza sativa L.)

et al. 2014

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BackgroundPlant responses to phytohormone stimuli are the most important biological features for plants to survive in a complex environment. Cytokinin regulates growth and nutrient homeostasis, such as the phosphate (Pi) starvation response and Pi uptake in plants. However, the mechanisms underlying how cytokinin participates in Pi uptake and Pi signaling are largely unknown. In this study, we found that OsARF16 is required for the cytokinin response and is involved in the negative regulation of Pi uptake and Pi signaling by cytokinin.Principal FindingsThe mutant osarf16 showed an obvious resistance to exogenous cytokinin treatment and the expression level of the OsARF16 gene was considerably up-regulated by cytokinin. Cytokinin (6-BA) application suppressed Pi uptake and the Pi starvation response in wild-type Nipponbare (NIP) and all these responses were compromised in the osarf16 mutant. Our data showed that cytokinin inhibits the transport of Pi from the roots to the shoots and that OsARF16 is involved in this process. The Pi content in the osarf16 mutant was much higher than in NIP under 6-BA treatment. The expressions of PHOSPHATE TRANSPORTER1 (PHT1) genes, phosphate (Pi) starvation-induced (PSI) genes and purple PAPase genes were higher in the osarf16 mutant than in NIP under cytokinin treatment.ConclusionOur results revealed a new biological function for OsARF16 in the cytokinin-mediated inhibition of Pi uptake and Pi signaling in rice.

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Auxin response factor (OsARF12), a novel regulator for phosphate homeostasis in rice (Oryza sativa)

Cited by 118 publications

References 59 publications

Effect of Bacillus subtilis on phosphorus uptake by cucumber as affected by iron oxides and the solubility of the phosphorus source

Effect of Bacillus subtilis on phosphorus uptake by cucumber as affected by iron oxides and the solubility of the phosphorus source

Root Architecture Responses: In Search of Phosphate

OsARF16 Is Involved in Cytokinin-Mediated Inhibition of Phosphate Transport and Phosphate Signaling in Rice (Oryza sativa L.)

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