Rhizosphere calcareous soil P-extraction at the expense of organic carbon from root-exuded organic acids induced by phosphorus deficiency in several plant species

Zhao, Keliang; Wu, Yanyou

doi:10.1080/00380768.2014.934191

Cited by 24 publications

(10 citation statements)

References 37 publications

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“…Previous studies suggest that the amount of organic acids in root secretion in Broussonetia papyrifera, mulberry, and rape plants under phosphorus stress was increased and consisted mainly of oxalic acid, citric acid, and malic acid [36]. However, in our study, the root secretion of organic acid content was higher under phosphorus stress and consisted mainly of phthalic acid and benzene dicarboxylic acid.…”

Section: Discussioncontrasting

confidence: 85%

Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Zhao

Zhang

2020

Open Chemistry

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AbstractIn this study, the root exudates of wetland plants, Pistia stratiotes, black algae, and Cyperus alternifolius, exposed to six phosphorus concentration gradients (0, 0.2, 1, 5, 10, and 20 mg/L) were characterized. The experimental seedlings were cultivated in Hoagland solutions, which were then extracted, decompressed, and concentrated with CH2Cl2; subsequently, a gas chromatography-mass spectrometry (GC-MS) analysis was performed to study the root exudates effects under different phosphorus concentrations. Results showed the existence of several organic compounds, such as alkanes, esters, alcohols, amines, benzene, and acids (phthalic acid, cycloheptasiloxane, benzoic acid, and cyclopentasiloxane) in the root exudates of the wetland plants. The relative contents of phthalate, benzene dicarboxylic acid, and cyclohexasiloxane in the root exudates first increased, and then decreased, with the change in phosphorus concentration. The relative contents of three compounds in Pistia were the highest at 1 mg/L of phosphorus, and the lowest relative contents of phthalic acid and benzene dicarboxylic acid were observed at 20 mg/L of phosphorus. However, the relative content of cyclohexasiloxane was the lowest in the absence of P stress. In black algae, the relative contents of the three compounds were 36.66, 16.24, and 14.61%, respectively. The relative content of cyclohexasiloxane in the black algae first decreased and then increased, with its lowest relative content occurring at 5 mg/L of phosphorus and the highest at 10 mg/L of phosphorus. In Cyperus alternifolius, the highest relative concentrations of the four compounds: phthalic acid, dimethyl phthalate, octadecane, and diphenyl sulfone in Cyperus were observed at 5 mg/L phosphorus and the lowest at 10 mg/L phosphorus.

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Section: Discussioncontrasting

confidence: 85%

Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Zhao

Zhang

2020

Open Chemistry

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“…The high CO 2 concentration reached in the atmosphere [109] anticipates an improvement in the photosynthetic rate of the crops, and some physiological variables, such as the Net Assimilation Rate, which reflects CO 2 , can act as a fertilizer for the crops, contributing to the net primary productivity [110,111]. Nevertheless, an increase in the plant growth causes a higher nutrient demand, leading P to become the most limiting nutrient [112].…”

Section: Phosphorus Dynamics and Effects Of Climate Changementioning

confidence: 99%

Phosphorus Dynamics in the Soil–Plant–Environment Relationship in Cropping Systems: A Review

et al. 2021

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This work performs a review of the relevant aspects of agronomic dynamics of phosphorus (P) in the soil–plant relationship as a community (crop ecophysiology), the effect of environmental conditions and global warming on the redistribution and translocation of P in some crop, and the use of good agricultural practices with the aim of improving the efficiency of the element. The research focuses on Northern Europe, North-Eastern Asia, Oceania, North America, and the tropical area of Latin America. This review covers general research and specific works on P found in the literature, 70% of which date from the last 10 years, as well as some older studies that have been of great relevance as references and starting points for more recent investigations. The dynamics of P in a system implies taking into account genetic aspects of the plant, component of the soil–plant–fertilizer–environment relationship, and use of technologies at the molecular level. In addition, in a climate change scenario, the availability of this element can significantly change depending on whether it is labile or non-labile.

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“…Proton release into a poorly buffered nutrient solution could lower the pH, shifting the carboxylic acid/ carboxylate ratio towards the acid form, and therefore reducing their efficacy in displacing P from the coprecipitate or dissolving the oxide, at least in the case of COP-myoInsP6 (Pearse et al 2007). In addition, Zhao and Wu (2014) have reported that the maximum P-extracting capability from a calcareous soil by four plant species (two woody Moraceae and two herbaceous cruciferous plants) occurred after 40 days of observation, concurrently with the maximal C losses, and Edayilam et al (2018) observed differences in P uptake from poorly available forms of P (Ca 3 (PO 4 ) 2 and FePO 4 ) after 16 weeks of growth. It is thus possible that the duration of the experiment in our study did not allow for an efficient activation of mechanisms that scavenge the nutrient from coprecipitates.…”

Section: Discussionmentioning

confidence: 99%

Tomato plant responses induced by sparingly available inorganic and organic phosphorus forms are modulated by strigolactones

et al. 2022

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Background and aims Phosphorus (P) is an essential nutrient for plant growth, but is also one of the least accessible in soil. Plants have evolved several strategies to cope with P deficiency and recently the role of the phytohormones strigolactones (SLs) in modulating tomato plants acclimation to P shortage has been described. How SLs regulate the use of P from sparingly accessible P sources, such as organic P or precipitated metal-P systems, is however still unknown in tomato. Methods In this study, we compared P acquisition strategies of wild-type (WT) and SL-depleted tomato plants grown hydroponically in the presence of dissolved inorganic phosphate (Pi), dissolved myo-inositol hexaphosphate (myoInsP6), or their coprecipitated form following Fe(II) oxidative precipitation. Results Irrespective of the P treatment, SL-depleted plants accumulated more P in their tissues than the WT, possibly due to the constitutively higher expression of high-affinity P transporters and activity of P-hydrolyzing enzymes. Wild-type plants were conversely more effective at acidifying their growth medium and exuding more organic compounds in the presence of dissolved myoInsP6 or coprecipitated forms of P, but this behaviour did not translate into a higher P acquisition. Conclusions The two genotypes activated different subsets of responses to bypass low P bioavailability, although the P acquisition efficiency (PAE) was not effectively increased. Strigolactone-depleted plants achieved higher PAE values than WT plants regardless of the applied P form, highlighting a central role of SLs in controlling P uptake and optimizing the cost/benefit ratio of P acquisition.

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Rhizosphere calcareous soil P-extraction at the expense of organic carbon from root-exuded organic acids induced by phosphorus deficiency in several plant species

Cited by 24 publications

References 37 publications

Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Phosphorus Dynamics in the Soil–Plant–Environment Relationship in Cropping Systems: A Review

Tomato plant responses induced by sparingly available inorganic and organic phosphorus forms are modulated by strigolactones

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