Phosphorus-acquisition characteristics and rhizosphere properties of wild barley in relation to genotypic differences as dependent on soil phosphorus availability

Ye, Daihua; Zhang, Xizhou; Li, Tingxuan; Xu, Jing; Chen, Guangdeng

doi:10.1007/s11104-017-3530-4

Cited by 14 publications

(11 citation statements)

References 49 publications

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“…In contrast, after P addition, a 4-fold increase in the depletion of moderately labile inorganic P (NaOH1-Pi) was observed, most likely due to an increased plant P uptake and microbial immobilization. Depletion of labile Pi fractions has been reported by different authors [ 37 , 69 , 74 , 106 ], while Chen et al [ 107 ] found that the NaOH-Pi fraction was accessible by plants and able to supply available P in a range of temperate grassland soils. In the literature, the depletion of NaOH-Pi was mainly related to the action of organic anions [ 21 , 23 , 42 ].…”

Section: Discussionmentioning

confidence: 99%

“…Labile organic P accumulated in blue lupin, while moderately labile organic P accumulated in grasses, probably due to an immobilization of some inorganic P by soil microbes [ 112 ], however we have no data to confirm this. Residual P levels changed little during our experiment, presumably due to its high recalcitrance together with the mobilization of other P pools [ 37 , 80 ].…”

Section: Discussionmentioning

confidence: 99%

“…Phosphorus dynamics are affected by plant species [ 19 , 34 , 35 , 36 , 37 ]. For instance, legume crops have been found to mobilize more stable P pools than cereals, reflecting divergent P acquisition strategies [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, legume crops have been found to mobilize more stable P pools than cereals, reflecting divergent P acquisition strategies [ 38 ]. Ye et al [ 37 ] found that P-efficient wild barley cultivars relied on acid phosphatase activity to mobilize different organic P fractions. Other authors highlighted the contribution of organic anions in the acquisition of sparingly available inorganic P forms in the rhizosphere of legumes such as chickpea, white lupin, and red clover [ 39 , 40 , 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

“…Previous experiments combining the addition of N and P and investigating P dynamics have been focused on forest ecosystems due to increased concerns about atmospheric N depositions and their impact on soil P availability [ 35 , 62 , 67 , 68 ]. In contrast, studies on legume and grass species have been mostly carried out in inert sand or soils but with either N or P addition [ 37 , 40 , 69 , 70 ]. The application of N and P fertilizers is a common practice among farmers to increase pasture production, and is more representative of what happens in the field [ 71 ].…”

Section: Introductionmentioning

confidence: 99%

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Role of Organic Anions and Phosphatase Enzymes in Phosphorus Acquisition in the Rhizospheres of Legumes and Grasses Grown in a Low Phosphorus Pasture Soil

Touhami

McDowell

Condron

2020

Plants

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Rhizosphere processes play a critical role in phosphorus (P) acquisition by plants and microbes, especially under P-limited conditions. Here, we investigated the impacts of nutrient addition and plant species on plant growth, rhizosphere processes, and soil P dynamics. In a glasshouse experiment, blue lupin (Lupinus angustifolius), white clover (Trifolium repens L.), perennial ryegrass (Lolium perenne L.), and wheat (Triticum aestivum L.) were grown in a low-P pasture soil for 8 weeks with and without the single and combined addition of P (33 mg kg−1) and nitrogen (200 mg kg−1). Phosphorus addition increased plant biomass and total P content across plant species, as well as microbial biomass P in white clover and ryegrass. Alkaline phosphatase activity was higher for blue lupin. Legumes showed higher concentrations of organic anions compared to grasses. After P addition, the concentrations of organic anions increased by 11-,10-, 5-, and 2-fold in the rhizospheres of blue lupin, white clover, wheat, and ryegrass, respectively. Despite the differences in their chemical availability (as assessed by P fractionation), moderately labile inorganic P and stable organic P were the most depleted fractions by the four plant species. Inorganic P fractions were depleted similarly between the four plant species, while blue lupin exhibited a strong depletion of stable organic P. Our findings suggest that organic anions were not related to the acquisition of inorganic P for legumes and grasses. At the same time, alkaline phosphatase activity was associated with the mobilization of stable organic P for blue lupin.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Role of Organic Anions and Phosphatase Enzymes in Phosphorus Acquisition in the Rhizospheres of Legumes and Grasses Grown in a Low Phosphorus Pasture Soil

Touhami

McDowell

Condron

2020

Plants

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Critical shoot phosphorus concentrations for changes in root morphology to improve phosphorus uptake in cotton

BoLang

et al. 2023

J. Plant Nutr. Soil Sci.

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Background In recent years, the response of cotton (Gossypium hirsutum L.) root morphology and rhizosphere processes to phosphorus (P) deficiency have attracted extensive attention. However, the dynamics of root morphology and physiology to shoot P concentration (SPC) under various P conditions remain unclear. Aim We aimed to determine the changes in root morphology and physiology and their relationships with SPC under different levels of P supply. Method The cotton cultivars XLZ13 and XLZ19 were grown in a hydroponic experiment with seven rates of P supply (0–2.0 mM P L−1) and in a root box experiment with seven P levels (0–400 mg P kg−1). Root morphological and physiological parameters were determined 60 days after planting (hydroponic experiment) and 75 days after transplanting (root box experiment). Results Cotton plant growth, P uptake, and root morphology differed significantly between the two genotypes and among the P levels. Cotton plants had the maximum shoot biomass when the SPC of XLZ13 and XLZ19 were 4.6–5.9 mg g−1 and 3.9‐5.0 mg g−1, respectively. Total and specific root lengths initially increased with increasing SPC and peaked at an SPC of XLZ13 and XLZ19 about 6.0–7.0 mg g−1 and 4.0‐5.0 mg g−1, respectively. Root physiological responses (rhizosphere acidification, acid phosphatase [Apase] activity) decreased as the SPC increased. Conclusions The critical SPC for optimal root morphology were 5–6 mg g−1. P deficiency did not induce rhizosphere acidification but promoted root and rhizosphere APase activity.

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Microbial Biofertilizers and Micronutrients Bioavailability: Approaches to Deal with Zinc Deficiencies

Waqeel

Khan

2021

Microbial Biofertilizers and Micronutrient Availability

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Micronutrients like boron, iron, manganese, zinc, and copper, although required in small quantities, are essential for plant health and growth. Excessive use of chemical fertilizers to meet the food demand is resulting in nutrient imbalances in soil, plants, and humans leading to environmental and health problems. Use of biofertilizers is an effective, economical, and sustainable approach to tackle the problem of nutrient imbalance. Biofertilizers help in maintaining the micronutrients in soil and making them available to plants. Zinc malnutrition is one of the biggest problems, as its biological consequences are severe and some of the estimates by international organizations are alarming. According to the Food and Agriculture Organization (FAO) of United Nations, 50% of the world's cereal soils are deficient in zinc. The World Health Organization estimates that approximately 800,000 people, mainly children under the age of 5, die annually due to the health complications caused by zinc deficiency. Zinc deficiency affects about 2 billion people worldwide. Various approaches are being used to combat the zinc deficiency such as increasing bioavailability of Zn to plants resulting in Zn biofortification of crops, use of supplements, and food fortification. To increase the Zn content of the plants, various strategies are used such as application of chemical fertilizers (soil and foliar spray), use of biofertilizers, and use of genetic engineering and plant breeding approaches. This chapter discusses some of the strategies used for the Zn biofortification of cereal crops.

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Phosphorus-acquisition characteristics and rhizosphere properties of wild barley in relation to genotypic differences as dependent on soil phosphorus availability

Cited by 14 publications

References 49 publications

Role of Organic Anions and Phosphatase Enzymes in Phosphorus Acquisition in the Rhizospheres of Legumes and Grasses Grown in a Low Phosphorus Pasture Soil

Role of Organic Anions and Phosphatase Enzymes in Phosphorus Acquisition in the Rhizospheres of Legumes and Grasses Grown in a Low Phosphorus Pasture Soil

Critical shoot phosphorus concentrations for changes in root morphology to improve phosphorus uptake in cotton

Microbial Biofertilizers and Micronutrients Bioavailability: Approaches to Deal with Zinc Deficiencies

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