Increase in microbial biomass and phosphorus availability in the rhizosphere of intercropped cereal and legumes under field conditions

Tang, Xiaolu; Bernard, Lætitia; Brauman, Alain; Daufresne, Tanguy; Deleporte, Philippe; Desclaux, Dominique; Souche, Gérard; Placella, Sarah A.; Hinsinger, Philippe

doi:10.1016/j.soilbio.2014.04.001

Cited by 120 publications

(64 citation statements)

References 47 publications

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“…Studies have confirmed that intercropping can change soil biochemical properties as compared to monocultures, 38 and the present study supports this (Figure 4-6). S. plumbizincicola and alfalfa are shallow-and deep-rooting species, respectively, 28 and their different root distributions in the intercropping treatment might change soil water diffusion and thus the transfer of OTC to the plant roots with water.…”

Section: Journal Of Agricultural and Food Chemistrysupporting

confidence: 88%

Oxytetracycline Toxicity and Its Effect on Phytoremediation by Sedum plumbizincicola and Medicago sativa in Metal-Contaminated Soil

Zhou²,

Chen

et al. 2016

J. Agric. Food Chem.

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Excessive use of antibiotics potentially threatens human health, agricultural production, and soil phytoremediation. This arouses concern over the potential adverse effects of a commonly used antibiotic, oxytetracycline (OTC), on plants used for soil remediation and possible stimulation of antibiotic resistance genes in soils. A greenhouse experiment was conducted to investigate different rates (0, 1, 5, and 25 mg kg −1 ) and frequencies (one single high and daily low application) of OTC addition to soil on phytoremediation of a heavy metal contaminated soil by Sedum plumbizincicola and/or Medicago sativa (alfalfa). After 90 days both Cd and Zn were substantially removed by phytoextraction into S. plumbizincicola shoots especially at the high OTC (25 mg kg −1 ) treatment which also led to inhibition of antioxidative enzyme activities in both plant species. Soil microbial activity decreased significantly with the addition of OTC, and this was ameliorated by planting alfalfa and S. plumbizincicola together. OTC at <5 mg kg −1 increased the biomass of both plant species, but the frequency of OTC addition had no effect on the rate of metal removal. Alfalfa exhibited greater detoxification ability and effectiveness in soil microbial activity promotion than S. plumbizincicola with intercropping. Phytoremediation by alfalfa and S. plumbizincicola in association can both promote the removal of heavy metals and also alleviate the toxic effects of pollutants on plants and soil microbes even at relatively high soil OTC concentrations.

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Section: Journal Of Agricultural and Food Chemistrysupporting

confidence: 88%

Oxytetracycline Toxicity and Its Effect on Phytoremediation by Sedum plumbizincicola and Medicago sativa in Metal-Contaminated Soil

Zhou²,

Chen

et al. 2016

J. Agric. Food Chem.

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“…Chickpea was able to mobilize soil organic P and leave more inorganic P available to the intercropped wheat or maize in low-P sandy soils (Li et al, 2003a;Li et al, 2004). Analytical studies on P mobilization from different P pools in soil need to separate the rhizosphere of each intercropped species from the bulk soil to allow for accurate P fractionation and measurement of changes in the amounts of the various pools (Makoi et al, 2010;Hinsinger et al, 2011;Betencourt et al, 2012;Tang et al, 2014;Dissanayaka et al, 2015).…”

Section: Observationsmentioning

confidence: 99%

“…In addition to direct rootinduced chemical processes, indirect interspecific P facilitation in the rhizosphere can occur as a consequence of shifts in microbial community structure, biomass or activity (He et al, 2013;Tang et al, 2014; (Jorquera et al, 2008) and other organic-P-mineralizing microbes in intercropping conditions (He et al, 2013). Theoretically, rhizodeposits may release P via stimulation of mineralization of soil organic matter (carbon priming) and contribute to increased P uptake in the companion crop.…”

Section: Interspecific Facilitationmentioning

confidence: 99%

Crop acquisition of phosphorus, iron and zinc from soil in cereal/legume intercropping systems: a critical review

Xue

Xia

Christie

et al. 2016

Ann Bot

187

132

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Background Phosphorus (P), iron (Fe) and zinc (Zn) are essential elements for plant growth and development, but their availability in soil is often limited. Intercropping contributes to increased P, Fe and Zn uptake and thereby increases yield and improves grain nutritional quality and ultimately human health. A better understanding of how intercropping leads to increased plant P, Fe and Zn availability will help to improve P-fertilizer-use efficiency and agronomic Fe and Zn biofortification.Scope This review synthesizes the literature on how intercropping of legumes with cereals increases acquisition of P, Fe and Zn from soil and recapitulates what is known about root-to-shoot nutrient translocation, plant-internal nutrient remobilization and allocation to grains.Conclusions Direct interspecific facilitation in intercropping involves below-ground processes in which cereals increase Fe and Zn bioavailability while companion legumes benefit. This has been demonstrated and verified using isotopic nutrient tracing and molecular analysis. The same methodological approaches and field studies should be used to explore direct interspecific P facilitation. Both niche complementarity and interspecific facilitation contribute to increased P acquisition in intercropping. Niche complementarity may also contribute to increased Fe and Zn acquisition, an aspect poorly understood. Interspecific mobilization and uptake facilitation of sparingly soluble P, Fe and Zn from soil, however, are not the only determinants of the concentrations of P, Fe and Zn in grains. Grain yield and nutrient translocation from roots to shoots further influence the concentrations of these nutrients in grains.

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“…The authors presented the known rhizosphere-related traits in multicropping production systems involved in facilitation, that is, in the present context, the ability of some species to chemically mobilize otherwise-unavailable forms of P in soils. P-mobilizing crop species improve P nutrition for themselves and neighboring non-P-mobilizing species by releasing acid phosphatases or phytases, which hydrolyze organic P to release Pi, protons (in alkaline soils only to solubilize Ca phosphate), and/or carboxylates (in all soils by decreasing P sorption on Al and Fe oxides and hydroxides) into the rhizosphere to solubilize phosphates Tang et al, 2014). The intercropping with P-mobilizing and non-P-mobilizing crop species corresponds to temporal and spatial niche differentiation in resource acquisition for these species, associated with an increase in productivity compared with a monoculture .…”

Section: Phosphorus Mobilization-based Facilitation In Intercroppingmentioning

confidence: 99%

Advances and Perspectives to Improve the Phosphorus Availability in Cropping Systems for Agroecological Phosphorus Management

Faucon

Houben

Reynoird

et al. 2015

Advances in Agronomy

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Increase in microbial biomass and phosphorus availability in the rhizosphere of intercropped cereal and legumes under field conditions

Cited by 120 publications

References 47 publications

Oxytetracycline Toxicity and Its Effect on Phytoremediation by Sedum plumbizincicola and Medicago sativa in Metal-Contaminated Soil

Oxytetracycline Toxicity and Its Effect on Phytoremediation by Sedum plumbizincicola and Medicago sativa in Metal-Contaminated Soil

Crop acquisition of phosphorus, iron and zinc from soil in cereal/legume intercropping systems: a critical review

Advances and Perspectives to Improve the Phosphorus Availability in Cropping Systems for Agroecological Phosphorus Management

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