Effect of Tilemsi phosphate rock-solubilizing microorganisms on phosphorus uptake and yield of field-grown wheat (Triticum aestivum L.) in Mali

Babana, Amadou Hamadoun; Antoun, Hani

doi:10.1007/s11104-006-9060-0

Cited by 100 publications

(43 citation statements)

References 33 publications

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“…Some studies have addressed the role of soil bacteria in the establishment of the symbiotic relationship between plants and mycorrhizal fungi (2,12,42). In contrast, not much is known about the putative interactions of bacteria with the dense hyphal network underneath fungal fruiting bodies that constitutes the mycosphere.…”

Section: Discussionmentioning

confidence: 99%

Selection of Sphingomonadaceae at the Base of Laccaria proxima and Russula exalbicans Fruiting Bodies

Boersma

Warmink

Andreote

et al. 2009

Appl Environ Microbiol

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The dense hyphal network directly underneath the fruiting bodies of ectomycorrhizal fungi might exert strong influences on the bacterial community of soil. Such fruiting bodies might serve as hot spots for bacterial activity, for instance by providing nutrients and colonization sites in soil. Here, we assessed the putative selection of specific members of the Sphingomonadaceae family at the bases of the fruiting bodies of the ectomycorrhizal fungi Laccaria proxima and Russula exalbicans in comparison to the adjacent bulk soil. To do so, we used a previously designed Sphingomonadaceae-specific PCR-denaturing gradient gel electrophoresis (DGGE) system and complemented this with analyses of sequences from a Sphingomonadaceae-specific clone library. The analyses showed clear selective effects of the fruiting bodies of both fungi on the Sphingomonadaceae community structures. The effect was especially prevalent with R. exalbicans. Strikingly, similar fungi sampled approximately 100 m apart showed similar DGGE patterns, while corresponding bulk soil-derived patterns differed from each other. However, the mycospheres of L. proxima and R. exalbicans still revealed divergent community structures, indicating that different fungi select for different members of the Sphingomonadaceae family. Excision of specific bands from the DGGE patterns, as well as analyses of the clone libraries generated from both habitats, revealed fruiting body-specific Sphingomonadaceae types. It further showed that major groups from the mycospheres of R. exalbicans and L. proxima did not cluster with known bacteria from the database, indicating new groups within the family of Sphingomonadaceae present in these environments.

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Section: Discussionmentioning

confidence: 99%

Selection of Sphingomonadaceae at the Base of Laccaria proxima and Russula exalbicans Fruiting Bodies

Boersma

Warmink

Andreote

et al. 2009

Appl Environ Microbiol

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“…Some soil and rhizosphere microorganisms such as AMF and plant growth promoting rhizobacteria also contribute to plant P acquisition (Richardson et al, 2009). Field trials of PSM application results in increases in crop yield by 0% to 20% (Jones and Oburger, 2011), and coapplication of AMF and PSM shows synergistic effects in P acquisition (Babana and Antoun, 2006). Alternatively, successful P management can be achieved by breeding crop cultivars or genotypes more efficient for P acquisition and use.…”

Section: Strategies For Improving P Efficiency In the Soil/rhizosphermentioning

confidence: 99%

Phosphorus Dynamics: From Soil to Plant

et al. 2011

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With increasing demand of agricultural production and as the peak in global production will occur in the next decades, phosphorus (P) is receiving more attention as a nonrenewable resource (Cordell et al., 2009;Gilbert, 2009). One unique characteristic of P is its low availability due to slow diffusion and high fixation in soils. All of this means that P can be a major limiting factor for plant growth. Applications of chemical P fertilizers and animal manure to agricultural land have improved soil P fertility and crop production, but caused environmental damage in the past decades. Maintaining a proper P-supplying level at the root zone can maximize the efficiency of plant roots to mobilize and acquire P from the rhizosphere by an integration of root morphological and physiological adaptive strategies. Furthermore, P uptake and utilization by plants plays a vital role in the determination of final crop yield. A holistic understanding of P dynamics from soil to plant is necessary for optimizing P management and improving P-use efficiency, aiming at reducing consumption of chemical P fertilizer, maximizing exploitation of the biological potential of root/rhizosphere processes for efficient mobilization, and acquisition of soil P by plants as well as recycling P from manure and waste. Taken together, overall P dynamics in the soilplant system is a function of the integrative effects of P transformation, availability, and utilization caused by soil, rhizosphere, and plant processes. This Update focuses on the dynamic processes determining P availability in the soil and in the rhizosphere, P mobilization, uptake, and utilization by plants. It highlights recent advances in the understanding of the P dynamics in the soil/rhizosphere-plant continuum.

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“…However, the direct application of low-grade rock phosphate as a P source in neutral and alkaline soils was of little importance [10,11], but addition of an inoculums of phosphate solubilising microorganisms to soil has also been found to improve the rock phosphate efficiency as a phosphorus source [12]. Many soil microorganisms, including bacteria and fungi, are able to mobilize phosphorus from sparingly soluble rock phosphates, and they have an enormous potential in providing soil phosphates for plant growth [13,14]. These organisms are ubiquitous but vary in density and mineral/rock phosphate solubilising ability from soil to soil or from one production system to another.…”

Section: Introductionmentioning

confidence: 99%

Rock-Phosphate Solubilising Bacteria and their Effect on Soybean (Glycine max) Growth under Pot Grown Conditions

Fankem¹

2014

AJAF

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Abstract:The modern agriculture is dependent on phosphorus (P) derived from phosphate rock. However, the direct application of low-grade rock phosphate as a P source in soils need an addition of inoculums of phosphate solubilising microorganisms to improve the rock phosphate efficiency as a phosphorus source. Phosphate solubilising bacteria (PSB) were screened for their phosphate solubilising ability on plates and in liquid cultures supplemented with Malian, Moroccan or Mexican rock phosphates. They were subsequently tested on soybean grown in pots filled with non sterile soil amended with Moroccan rock phosphate for their aptitude in promoting soybean growth. (810.86, 270.92 and 180.95 µgP/g). In general, Panthoea sp. and Bacillus sp. better contribute to the soybean growth with the effect of 35% and 34% respectively compare to non inoculated control supplied with non soluble Moroccan rock phosphate. The activity of Klebsiella sp. (13%) that is low in general seems to be stimulated when associated with the two other strains (33%). This suggests that the use of rock phosphate combined with the co-inoculation with those strains would ensure soybean production in economically profitable and environmentally friendly conditions.

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Effect of Tilemsi phosphate rock-solubilizing microorganisms on phosphorus uptake and yield of field-grown wheat (Triticum aestivum L.) in Mali

Cited by 100 publications

References 33 publications

Selection of Sphingomonadaceae at the Base of Laccaria proxima and Russula exalbicans Fruiting Bodies

Selection of Sphingomonadaceae at the Base of Laccaria proxima and Russula exalbicans Fruiting Bodies

Phosphorus Dynamics: From Soil to Plant

Rock-Phosphate Solubilising Bacteria and their Effect on Soybean (Glycine max) Growth under Pot Grown Conditions

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