Organic acid behaviour in a calcareous soil implications for rhizosphere nutrient cycling

Ström, Lena; Owen, Andrew; Godbold, Douglas L.; Jones, Davey L.

doi:10.1016/j.soilbio.2005.03.009

Cited by 161 publications

(95 citation statements)

References 41 publications

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“…The relationship between P extracted by plants and NaOH-P + cb-P indicated that the inorganic P in these fractions that was not extracted with the Olsen reagent contributed to plant uptake in low-P pots but not in high-P pots. Mobilization of these non-bicarbonate-extractable inorganic P forms can be probably ascribed to organic acid exudation by roots (Jones 1998;Ström et al 2005;Richardson et al 2011). Extraction with cb, which is able to dissolve Ca phosphates (Saavedra and Delgado 2005), mimics to some extent the effect of the exudation of acids in rhizosphere soils buffered at basic pH.…”

Section: Resultsmentioning

confidence: 99%

Accuracy of Olsen P to assess plant P uptake in relation to soil properties and P forms

Recena

Torrent

Campillo

et al. 2015

Agron. Sustain. Dev.

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Efficient use of phosphorus (P) by plants in agriculture relies on accurate estimation of the phytoavailable soil P. However, poor relationships are frequently observed between P availability indices, such as Olsen P, and P uptake by plants. We therefore studied which soil properties modify the accuracy of Olsen P as a P availability index. We conducted a soil P depletion experiment in pots with 17 soils. Two samples differing widely in Olsen P were used for each soil and named "low-P" and "high-P." Soil was mixed with siliceous sand to achieve 1 mg of Olsen P per pot, so that the ratio of non-readily available P, either inorganic P or organic P, to Olsen P in the pot was higher for low-P than for high-P samples. Results show that, in high-P samples, P uptake by cucumber is positively correlated with the affinity of the soil solid phase for P, with R 2 of 0.76. In high-P samples, P uptake by cucumber is positively correlated with total P adsorption capacity as estimated by Fe in the form of Fe oxides, with R 2 = 0.56. P uptake is positively correlated with the inorganic P released by NaOH and citrate-bicarbonate in low-P samples, with R 2 of 0.52. In low-P samples, total organic P and phosphatase activity in the rhizosphere explained 37 % of plant P uptake. In low-P samples, phosphatase activity and pH explained 50 % of plant P uptake. These findings reveal that organic P forms and hydrolytic activity by roots are explaining P availability to plants. Whereas physico-chemical processes controlling inorganic P dynamics play a major role for low organic P/Olsen P ratios.

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Section: Resultsmentioning

confidence: 99%

Accuracy of Olsen P to assess plant P uptake in relation to soil properties and P forms

Recena

Torrent

Campillo

et al. 2015

Agron. Sustain. Dev.

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“…Therefore, ALMT1-V might be involved in reducing Al toxicity. However, the ALMT1 gene is associated with the efflux of malate (Sasaki et al 2004;Ryan et al 2011), which has been suggested to enhance the uptake of some essential elements in alkaline soils (Ström et al 2005;Colla et al 2010), providing another possible explanation. Regardless of the mechanism, ALMT1-V should contribute to yield potential in this environment, and in fact, we found that many successful cultivars over the past century carry this allele (e.g.…”

Section: Effect Of Almt1mentioning

confidence: 99%

Ppd1, Vrn1, ALMT1 and Rht genes and their effects on grain yield in lower rainfall environments in southern Australia

Eagles

Cane²,

Trevaskis

et al. 2014

Crop Pasture Sci.

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Abstract. Allele-specific markers for important genes can improve the efficiency of plant breeding. Their value can be enhanced if effects of the alleles for important traits can be estimated in identifiable types of environment. Provided potential bias can be minimised, large, unbalanced, datasets from previous plant-breeding and agronomic research can be used. Reliable, allele-specific markers are now available for the phenology genes Ppd-D1, Vrn-A1, Vrn-B1 and Vrn-D1, the aluminium-tolerance gene TaALMT1, and the plant-stature genes Rht-B1 and Rht-D1. We used a set of 208 experiments with growing-season rainfall of <347 mm from southern Australia to estimate the effects of seven frequent combinations of the phenology genes, an intolerant and a tolerant allele of TaALMT1, and two semi-dwarf combinations Rht-B1b + Rht-D1a (Rht-ba) and Rht-B1a + Rht-D1b (Rht-ab) on grain yield in lower rainfall, Mediterranean-type environments in southern Australia. There were 775 lines in our analyses and a relationship matrix was used to minimise bias.Differences among the phenology genes were small, but the spring allele Vrn-B1a might be desirable. The tolerant allele, TaALMT1-V, was advantageous in locations with alkaline soils, possibly because of toxic levels of aluminium ions in subsoils. The advantage of TaALMT1-V is likely to be highest when mean maximum temperatures in spring are high. Rht-ab (Rht2 semi-dwarf) was also advantageous in environments with high mean maximum temperatures in spring, suggesting that for these stress environments, the combination of Vrn-B1a plus TaALMT1-V plus Rht-ab should be desirable. Many successful cultivars carry this combination.

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“…Thus, soils developed on limestone bedrock are potentially unsuitable for vegetation. However, some plant species are able to tolerate the limited availability of nutrients and a high base status, which has resulted in the evolution of distinct vegetation dominated by calcicole (Ström et al 2005). However, at the studied locality calcareous plants typical of such soils are not present, here the vegetation cover comprizes various non-calcareous plants like broad-leaved trees (Quercus variabilis) and conifers (Chamaecyparis obtusa).…”

mentioning

confidence: 92%

“…Therefore, the supply of these nutrients from the chemical weathering of limestone bedrock is assumed to be limited. In addition, some elements (such as P) become immobile due to the formation of stable calcium compounds (Ström et al 2005). Thus, soils developed on limestone bedrock are potentially unsuitable for vegetation.…”

mentioning

confidence: 99%

Systematic geochemical study of the soils, litter, and bedrock of a Permian limestone mountain, Central Japan

Ueno

Sugitani

2013

Soil & Water Res.

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The paper deals with the results of a systematic geochemical study of soils at Mt Kinshozan in Central Japan, a limestone area known for its well-preserved Permian fossils. Compared with the typical composition of the Japanese upper continental crust, here the soils were found depleted in Si, Ca, Na, Mg, and K and rich in Ti, Al, and Fe. They were enriched with some heavy metals (Cr, Ni, Cu, Pb, and Zn) detected also in the acetic-acid residue of the limestone collected from Mt. Kinshozan. Therefore, the residual materials produced through chemical weathering of the limestone bedrock may have significantly contributed to the soils formation. Concentrations of C total were nearly identical to C org and the relationship between C total and Element/TiO 2 suggested a significant contribution of the litter to Si, Mg, Ca, and P in the soils.

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Organic acid behaviour in a calcareous soil implications for rhizosphere nutrient cycling

Cited by 161 publications

References 41 publications

Accuracy of Olsen P to assess plant P uptake in relation to soil properties and P forms

Accuracy of Olsen P to assess plant P uptake in relation to soil properties and P forms

Ppd1, Vrn1, ALMT1 and Rht genes and their effects on grain yield in lower rainfall environments in southern Australia

Systematic geochemical study of the soils, litter, and bedrock of a Permian limestone mountain, Central Japan

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