Interactions between accumulation of trace elements and macronutrients in Salix caprea after inoculation with rhizosphere microorganisms

Maria, Susanna De; Rivelli, Anna Rita; Kuffner, Melanie; Sessitsch, Angela; Wenzel, Walter W.; Gorfer, Markus; Strauss, Joseph; Puschenreiter, Markus

doi:10.1016/j.chemosphere.2011.05.002

Cited by 71 publications

(38 citation statements)

References 47 publications

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“…This could be due to bacterially induced mineral weathering; SBA82 is a phosphate solubilizer and a siderophore producer, which could lead to an improvement in the plant P and Fe status. Both characteristics have previously been related to an improvement in plant nutrition (44). This improvement could also be associated with the observed increase in biomass production.…”

Section: Discussionmentioning

confidence: 81%

Bacterially Induced Weathering of Ultramafic Rock and Its Implications for Phytoextraction

Becerra-Castro

Kidd

Kuffner

et al. 2013

Appl Environ Microbiol

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The bioavailability of metals in soil is often cited as a limiting factor of phytoextraction (or phytomining). Bacterial metabolites, such as organic acids, siderophores, or biosurfactants, have been shown to mobilize metals, and their use to improve metal extraction has been proposed. In this study, the weathering capacities of, and Ni mobilization by, bacterial strains were evaluated. Minimal medium containing ground ultramafic rock was inoculated with either of two Arthrobacter strains: LA44 (indole acetic acid [IAA] producer) or SBA82 (siderophore producer, PO 4 solubilizer, and IAA producer). Trace elements and organic compounds were determined in aliquots taken at different time intervals after inoculation. Trace metal fractionation was carried out on the remaining rock at the end of the experiment. The results suggest that the strains act upon different mineral phases. LA44 is a more efficient Ni mobilizer, apparently solubilizing Ni associated with Mn oxides, and this appeared to be related to oxalate production. SBA82 also leads to release of Ni and Mn, albeit to a much lower extent. In this case, the concurrent mobilization of Fe and Si indicates preferential weathering of Fe oxides and serpentine minerals, possibly related to the siderophore production capacity of the strain. The same bacterial strains were tested in a soil-plant system: the Ni hyperaccumulator Alyssum serpyllifolium subsp. malacitanum was grown in ultramafic soil in a rhizobox system and inoculated with each bacterial strain. At harvest, biomass production and shoot Ni concentrations were higher in plants from inoculated pots than from noninoculated pots. Ni yield was significantly enhanced in plants inoculated with LA44. These results suggest that Ni-mobilizing inoculants could be useful for improving Ni uptake by hyperaccumulator plants.

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Section: Discussionmentioning

confidence: 81%

Bacterially Induced Weathering of Ultramafic Rock and Its Implications for Phytoextraction

Becerra-Castro

Kidd

Kuffner

et al. 2013

Appl Environ Microbiol

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“…At maturity stage, the largest accumulation of Cd, Zn and Cu in plant was found in the leaves, mainly in the old ones, followed by stem and head. In literature, similarities in the accumulation pattern of Cd and Zn were often reported for sunflower as well as for other species (Küpper et al, 2000;Ma et al, 2005;Chaves et al, 2011;De Maria et al, 2011). The increase of metals concentration in old leaves and their decrease in young leaves and head, passing from R-1 to R-9, as highlighted also comparing the BCF calculated in relation to old leaves to those calculated in relation to the aerial part, could be interpreted as a probable re-translocation of the three metals along the plant with the aim to preserve photosynthesizing tissues and reproductive organs from toxic levels.…”

Section: Discussionmentioning

confidence: 99%

Trace element accumulation and distribution in sunflower plants at the stages of flower bud and maturity

Maria

Rivelli

2013

Ital J Agronomy

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The aim of this study was to analyze the accumulation and distribution of cadmium (Cd), zinc (Zn) and copper (Cu) in different portions of plants of sunflower (Helianthus annuus L., cv. Oleko) grown in soil with contaminants (5, 300, 400 mg kg -1 of Cd, Zn and Cu, respectively) and without (untreated soil as a control) from the emergence of cotyledon leaves until to two phenological stages: flower bud (R-1) and maturity (R-9). Sunflower accumulated considerable amounts of heavy metals in both phenological stages showing slight reductions of dry matter production. At R-1 stage, Cd, Zn and Cu were accumulated mainly in the roots with concentrations respectively up to 5.4, 233 and 160 mg kg -1 of dry matter with a low translocation from roots to the aerial part. Yet at the R-1 stage, the bioconcentration factor (BCF) of Cd showed a significantly higher value in the Cd-Zn-Cu treatment (0.27) with respect to the untreated control (0.02), vice versa was observed for Cu, whereas no significant difference between treatments was observed for Zn (0.12 on average). However among metals, Cd showed the highest value of BCF. Referring only to the epigeous portion, differences in the accumulation and distribution of the three metals in the treated plants were found in both phenological stages; indeed passing from flower bud to the maturity stage, Cd, Zn and Cu concentrations increased in the stems and leaves, particularly in the old ones, whereas decreased in the heads. Metal accumulation in the achenes was very low and never exceed the toxicity threshold value considered for livestock. The high storage of heavy metals in roots and the probable re-translocation of the three metals along the plant during the growing cycle could be considered as a strategy of sunflower to preserve young metabolically-active leaves and reproductive organs from toxic metal concentrations.

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“…In addition to an insufficient availability of nutrients, unequal plant growth and dieback of cuttings are found to be the main factors resulting in a decline of production during consecutive SRC harvests [2]. These kinds of problems are most severe in Salix L. SRC where very high planting densities are usually suggested [3]. In addition to economic considerations, SRC plantations with variable plant densities and large numbers of gaps in the SRC vegetation cover can cause ecological problems if the SRC is used as a phytoremediation site or in terms of vegetation filter [4].…”

Section: Introductionmentioning

confidence: 99%

“…At the start of the experiment the rods were divided into cuttings of 20 ± 0.1 cm in length as long as their diameter was more than 7 mm and their location along the rod in terms of position from the ground (1)(2)(3)(4)(5)(6)(7)(8), number of visible buds on the bark and diameters of the apical cutting part were recorded and the cutting was marked using a waterproof pencil. In total, 120 cuttings per clone in 2009 and 60 cuttings in 2010 were made.…”

Section: Methodsmentioning

confidence: 99%

“…It has been demonstrated that planting of Salix in former permanent grassland areas resulted with differences in the soil microbial community [19]. Moreover, there is strong evidence that Salix also has some endophytes in terms of symbionts for nitrogen uptake [20], hence, the inoculation of planting material with specific microorganisms is suggested [3].…”

Section: Introductionmentioning

confidence: 99%

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Quality Testing of Short Rotation Coppice Willow Cuttings

Heinsoo¹,

Tali²

2018

Forests

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Abstract:The production and feasibility of Short Rotation Coppice depend on cutting early performance. The shoot and root biomass production of Salix cuttings in hydroponic conditions was studied. The amount of sprouted biomass after four weeks of growth depended on cutting the diameter, but the original position of the cutting along the rod or number of visible buds was not in correlation with biomass produced. Application of mineral fertilizer or soil originating from the willow plantation did not increase the total production. On the contrary, the addition of soil tended to decrease biomass production and we assumed this was a result of a shortage of light. Under the influence of fertilization, plants allocated greater biomass to roots. Comparison of different clones revealed that those with S. dasyclados genes tended to allocate less biomass to roots and the poorest-performing clone in our experiment, also had the lowest wood production in the plantation. The number of visible buds on the cutting was also clone-specific.

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Interactions between accumulation of trace elements and macronutrients in Salix caprea after inoculation with rhizosphere microorganisms

Cited by 71 publications

References 47 publications

Bacterially Induced Weathering of Ultramafic Rock and Its Implications for Phytoextraction

Bacterially Induced Weathering of Ultramafic Rock and Its Implications for Phytoextraction

Trace element accumulation and distribution in sunflower plants at the stages of flower bud and maturity

Quality Testing of Short Rotation Coppice Willow Cuttings

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