Molecular mechanisms of phosphate transport and signaling in higher plants

Wang, Fei; Deng, Meiju; Xu, Jiming; Zhu, Xinlu; Mao, Chuanzao

doi:10.1016/j.semcdb.2017.06.013

Cited by 144 publications

(96 citation statements)

References 120 publications

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“…In the present paper, the modified nutrient delivery practice was extended to the study of P. The regulation of P homeostasis in plants is complex (Gu et al 2016;Młodzińska and Zboińska 2016;López-Arredondo et al 2017;Wang et al 2018;Chang et al 2019). High-affinity inorganic orthophosphate (P i ) transporters (PTs) belong to the PHOSPHATE TRANSPORTER 1 (PHT1) gene family; they are plasma membrane-located and associated with free P i uptake at the root-soil interface when external P i is limited, as well as root-to-shoot transfer and remobilization.…”

Section: Introductionmentioning

confidence: 99%

Strategic timing and rate of phosphorus fertilization improves phosphorus-use efficiency in two contrasting cultivars of subirrigated greenhouse-grown chrysanthemum

2020

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Greenhouse floriculture operations pose significant environmental risk due to extensive inputs of fertilizer, especially nitrogen and phosphorus (P). Recent evidence shows that the use efficiency for nitrogen or sulphur is markedly improved in subirrigated potted chrysanthemums (Chrysanthemum morifolium Ramat.) by supplying a moderate level of the nutrient during vegetative growth, and removing the entire nutrient suite at the onset of reproductive growth, without adverse effects on plant quality. Here, two split-plot experiments were conducted with subirrigated, potted, disbudded chrysanthemums grown in a peat:perlite mixture under greenhouse conditions (high- or low-ambient light) with inorganic orthophosphate (Pi) treatment (2.6 mmol L−1 Pi supplied during the vegetative and reproductive stages, and 2.6, 1.95, or 1.3 mmol L−1 Pi supplied during the vegetative stage only) as the main plot and cultivar (‘Olympia’ and ‘Covington’) as the subplot. Market quality plants with sufficient tissue P were produced even when Pi delivery was reduced by approximately 75% over the crop cycle, compared with industry standards. The primary mechanism for sustaining plant growth with decreasing Pi delivery was improved acquisition or uptake efficiency, although some changes in internal P-utilization efficiency were evident, including the remobilization of both organic P and Pi during inflorescence development. Differences in biomass yields, tissue P concentrations, content-based P-use efficiency (PUEC = mg shoot dry mass/mg shoot P content) with constant Pi acquisition, and uptake- versus remobilization-based P supply for inflorescence growth established that ‘Olympia’ has a greater P-utilization efficiency than ‘Covington’. This modified subirrigation practice could contribute significantly to low-input production of floricultural crops.

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Section: Introductionmentioning

confidence: 99%

Strategic timing and rate of phosphorus fertilization improves phosphorus-use efficiency in two contrasting cultivars of subirrigated greenhouse-grown chrysanthemum

2020

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“…Considering the pivotal roles of this macronutrient in energy dynamics and metabolic regulation, P fluxes coordinately adjust to balance growth and development at the level of the whole plant. In the same way as it occurs with other mineral nutrients, both local signals acting on the cellular level, and long-distance or systemic signaling pathways, communicating internal nutrient status across different tissues and plant organs, must act coordinately to improve nutrient acquisition and internal utilization (Giehl et al, 2009;Lin et al, 2014;Ham et al, 2018;Wang et al, 2018;Ueda and Yanagisawa, 2019). The signaling compounds, such as NO and hormones, are involved in regulatory pathways when availability of nutrients is scarce (Giehl et al, 2009;Lei et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

An Update on Nitric Oxide Production and Role Under Phosphorus Scarcity in Plants

et al. 2020

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“…These complex responses can be achieved by the coordination of an elaborate P signaling network [17,18]. Over the past few decades, several key regulators involved in this network have been functionally characterized, such as PHR1 (phosphate starvation response 1), SPX domaincontaining proteins, PHO2 (a ubiquitin-conjugating E2 enzyme) and microRNA399 [19][20][21].Low Pi availability induces dramatic changes in gene and protein expressions in plants [22,23]. Transcriptomic and proteomic techniques have been widely used to investigate Pi starvation response (PSR) genes and proteins in various plants, such as Arabidopsis thaliana [24], rice (Oryza sativa) [25, 26], maize (Zea mays) [27-30] and masson pine (Pinus massoniana) [30,31].…”

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confidence: 99%

Metabolic alterations provide insights into Stylosanthes roots responding to phosphorus deficiency

Luo

Liu

Zhang

et al. 2019

Preprint

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Background: Phosphorus (P) deficiency is one of the major constraints limiting plant growth, especially in acid soils. Stylosanthes (stylo) is a pioneer tropical legume with excellent adaptability to low P stress, but its underlying mechanisms remain largely unknown. Results: In this study, the physiological, molecular and metabolic changes in stylo responding to phosphate (Pi) starvation were investigated. Under low P condition, the root growth in stylo was significantly enhanced, which was accompanied with up-regulation of expansin genes participating in cell wall loosening. Metabolic profiling analysis showed that a total of 256 metabolites with differential accumulation were identified in stylo roots responding to P deficiency, which mainly include flavonoids, sugars, nucleotides, amino acids, phenylpropanoids and phenylamides. P deficiency led to significant reduction in the accumulation of phosphorylated metabolites (e.g., P-containing sugars, nucleotides and cholines), suggesting that internal P utilization was enhanced in stylo roots. However, flavonoid metabolites, such as kaempferol, daidzein and their glycoside derivatives, were significantly increased in P-deficient stylo roots. Furthermore, the transcripts of various genes involved in flavonoids synthesis were found to be up-regulated by Pi starvation in stylo roots. In addition, the abundance of phenolic acids and phenylamides was significantly increased in stylo roots during P deficiency. The enhanced accumulation of the metabolites in stylo roots, such as flavonoids, phenolic acids and phenylamides, might facilitate P solubilization and cooperate with beneficial microorganisms in rhizosphere, and thus contributing to P acquisition and utilization in stylo. Conclusions: These results suggest that stylo plants cope with P deficiency by modulating root morphology, scavenging internal Pi from phosphorylated metabolites and enhancing accumulation of flavonoids, phenolic acids and phenylamides. This study provides valuable insights into the complex responses and adaptive mechanisms of stylo to P deficiency.

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Molecular mechanisms of phosphate transport and signaling in higher plants

Cited by 144 publications

References 120 publications

Strategic timing and rate of phosphorus fertilization improves phosphorus-use efficiency in two contrasting cultivars of subirrigated greenhouse-grown chrysanthemum

Strategic timing and rate of phosphorus fertilization improves phosphorus-use efficiency in two contrasting cultivars of subirrigated greenhouse-grown chrysanthemum

An Update on Nitric Oxide Production and Role Under Phosphorus Scarcity in Plants

Metabolic alterations provide insights into Stylosanthes roots responding to phosphorus deficiency

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