Root developmental adaptation to phosphate starvation: better safe than sorry

Péret, Benjamin; Clément, Mathilde; Nussaume, Laurent; Desnos, Thierry

doi:10.1016/j.tplants.2011.05.006

Cited by 448 publications

(399 citation statements)

References 114 publications

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“…In contrast to nitrate, which is highly mobile in soil and tends to leach easily, phosphorus also has poor soil mobility and tends to be concentrated in the upper soil strata [13]. Plants grown in low phosphorus conditions typically exhibit reduced elongation of the primary root and increased lateral root density and length [104]. This is thought to be an adaptive response to aid nutrient foraging.…”

Section: Control Of Root Branching In Arabidopsis (A) Hormonesmentioning

confidence: 99%

Root system architecture: insights fromArabidopsisand cereal crops

Smith

Smet

2012

Phil. Trans. R. Soc. B

374

289

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Roots are important to plants for a wide variety of processes, including nutrient and water uptake, anchoring and mechanical support, storage functions, and as the major interface between the plant and various biotic and abiotic factors in the soil environment. Understanding the development and architecture of roots holds potential for the exploitation and manipulation of root characteristics to both increase food plant yield and optimize agricultural land use. This theme issue highlights the importance of investigating specific aspects of root architecture in both the model plant Arabidopsis thaliana and (cereal) crops, presents novel insights into elements that are currently hardly addressed and provides new tools and technologies to study various aspects of root system architecture. This introduction gives a broad overview of the importance of the root system and provides a snapshot of the molecular control mechanisms associated with root branching and responses to the environment in A. thaliana and cereal crops.

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Section: Control Of Root Branching In Arabidopsis (A) Hormonesmentioning

confidence: 99%

Root system architecture: insights fromArabidopsisand cereal crops

Smith

Smet

2012

Phil. Trans. R. Soc. B

374

289

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“…Modification of root system architecture under P limitation, as presented in Fig. 2 C, further enhances soil P uptake, for example, by increased growth of lateral roots and by stimulating secondary root branching at the expense of primary roots (Chevalier et al, 2003;Reymond et al, 2006;Péret et al, 2011). Also the development of 'proteoid' roots, special structures in certain plant families that release large amounts of organic acids, has been attributed to P-deficiency (Adams et al, 2002).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Physiological and molecular alterations in plants exposed to high [CO2] under phosphorus stress

Pandey

Zinta

AbdElgawad

et al. 2015

Biotechnology Advances

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Physiological and molecular alterations in plants exposed to high [CO 2 ] under phosphorus stress, Biotechnology Advances (2015Advances ( ), doi: 10.1016Advances ( /j.biotechadv.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. This is the author's version of a work that was accepted for publication in Biotechnology Advances (Ed. Elsevier). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Pandey, Renu et al. Fax: +91-11-25846420] has increased substantially in recent decades and will continue to do so, whereas the availability of phosphorus (P) is limited and unlikely to increase in the future. P is a non-renewable resource, and it is essential to every form of life. P is a key plant nutrient controlling the responsiveness of photosynthesis to [CO 2 ]. Increases in [CO 2 ] typically results in increased biomass through stimulation of net photosynthesis, and hence enhance the demand for P uptake. However, most soils contain low concentrations of available P.Therefore, low P is one of the major growth-limiting factors for plants in many agricultural and natural ecosystems. The adaptive responses of plants to [CO 2 ] and P availability encompass alterations at morphological, physiological, biochemical and molecular levels. In general low P reduces growth, whereas high [CO 2 ] enhances it particularly in C 3 plants. Photosynthetic capacity is often enhanced under high [CO

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“…In addition, due to the scarce mobility of Pi, plant uptake, via root epidermal cells and root hairs, leads to a rapid exhaustion of Pi availability near the root system, and creates a depleted zone . In order to increase Pi uptake, plants have evolved different strategies, such as the enhanced growth of lateral roots and root hairs, and/or the solubilization of soil Pi by means of organic acid and phosphatase secretion: all these processes are probably orchestrated by a systemic signalling that is triggered during Pi starvation (Doener 2008;Lambers et al 2011;Péret et al 2011) and involves specific gene expression regulators, as has been demonstrated in Arabidopsis (Pérez Torres et al 2009). Another widespread and evolutionary ancient strategy is the establishment of arbuscular mycorrhizal (AM) symbiosis which involves the majority of land plants and fungi belonging to the Glomeromycota phylum (Parniske 2008;Bonfante and Genre 2010).…”

Section: Introductionmentioning

confidence: 99%

The expression of GintPT, the phosphate transporter of Rhizophagus irregularis, depends on the symbiotic status and phosphate availability

Fiorilli

Lanfranco

Bonfante

2013

Planta

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The development of mutualistic interactions with arbuscular mycorrhizal (AM) fungi is one of the most important adaptation of terrestrial plants to face mineral nutrition requirements. As an essential plant nutrient, phosphorus uptake is acknowledged as a major benefit of the AM symbiosis, but the molecular mechanisms of its transport as inorganic phosphate (Pi) from the soil to root cells via AM fungi remain poorly known. Here we monitored the expression profile of the high-affinity phosphate transporter (PT) gene (GintPT) of Rhizophagus irregularis (DAOM 197198) in fungal structures (spores, extraradical mycelium and arbuscules), under different Pi availability, and in respect to plant connection. GintPT resulted constitutively expressed along the major steps of the fungal life cycle and the connection with the host plant was crucial to warrant GintPT high expression levels in the extraradical mycelium. The influence of Pi availability on gene expression of the fungal GintPT and the Medicago truncatula symbiosis-specific Pi transporter (MtPT4) was examined by qRT-PCR assay on microdissected arbusculated cells. The expression profiles of both genes revealed that these transporters are sensitive to changing Pi conditions: we observed that MtPT4 mRNA abundance is higher at 320 than at 32 μM suggesting that the flow towards the plant requires high concentrations. Taken on the whole, the findings highlight novel traits for the functioning of the GintPT gene and offer a molecular scenario to the models describing nutrient transfers as a cooperation between the mycorrhizal partners.

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Root developmental adaptation to phosphate starvation: better safe than sorry

Cited by 448 publications

References 114 publications

Root system architecture: insights fromArabidopsisand cereal crops

Root system architecture: insights fromArabidopsisand cereal crops

Physiological and molecular alterations in plants exposed to high [CO2] under phosphorus stress

The expression of GintPT, the phosphate transporter of Rhizophagus irregularis, depends on the symbiotic status and phosphate availability

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