Biological mobilization of potassium from clay minerals by ectomycorrhizal fungi and eucalypt seedling roots

Yuan, Ling; Huang, Jikun; Li, Xin; Christie, Peter

doi:10.1023/b:plso.0000037055.67646.97

Cited by 52 publications

(58 citation statements)

References 21 publications

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“…Studies have been able to show the ability of ECM fungi to mobilise nutrients from different minerals under different conditions (Paris et al 1996;Yuan et al 2004;van Schöll et al 2006b). Most of these studies involved the use of mycorrhizal plants as well as single type of K and P bearing minerals such as feldspar, biotite, muscovite and apatite (Wallander and Wickman 1999;Yuan et al 2004;van Schöll et al 2006b;Balogh-Brunstad et al 2008;Calvaruso et al 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Oxalate chelation of these cations results in structural imbalance and therefore, may lead to the dissolution and release of other elements embedded in minerals such as K and P (Yuan et al 2004;Delvasto et al 2009). Secondly, both protons (from organic acids) and K (from minerals such as muscovite) are monovalent, but the size of the protons (0.32 9 10 -10 m) is much smaller than that of K (2.03 9 10 -10 m) (Lapeyrie et al 1987;Yuan et al 2004). The size, therefore, gives an advantage to protons to replace interlayer K contained in layer minerals such as muscovite associated with iron ores investigated in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Most of these studies involved the use of mycorrhizal plants as well as single type of K and P bearing minerals such as feldspar, biotite, muscovite and apatite (Wallander and Wickman 1999;Yuan et al 2004;van Schöll et al 2006b;Balogh-Brunstad et al 2008;Calvaruso et al 2009). However, this study has investigated the mobilisation of nutrients from mineral ore that consists of one or more of such minerals using ECM fungi.…”

Section: Discussionmentioning

confidence: 99%

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Mobilisation of potassium and phosphorus from iron ore by ectomycorrhizal fungi

Adeleke

Cloete

Bertrand

et al. 2010

World J Microbiol Biotechnol

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Mutualistic roles of ectomycorrhizal (ECM) fungi have been linked to their ability to produce organic acids that aid in the dissolution of insoluble minerals in the rhizosphere. This ability of ECM fungi was utilised to investigate their potential participation in the mobilisation of nutrients such as phosphorus (P) and potassium (K) from a typical insoluble ore-iron ore. In vitro pure cultures of four different ECM fungi; Pisolithus tinctorius, Paxillus involutus, Phialocephala fortini, and Suillus tomentosus were screened for their ability to mobilise P and K from two types of non-exportable Sishen iron ore. When present in iron ore, these elements are deleterious and reduce the commercial values of the ore. Experiment was set up with different treatments that included two ore types (KGT and SK) and five particle sizes of each ore type. Results indicated the potential of the four fungi to mobilise P and K from the two iron ore types though at different levels. Ore type, particle size, organic acid production and attachment of the fungi to the iron ore were all found to play important roles in the mobilisation of nutrients from these ores.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Mobilisation of potassium and phosphorus from iron ore by ectomycorrhizal fungi

Adeleke

Cloete

Bertrand

et al. 2010

World J Microbiol Biotechnol

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“…The availability of the nutrients in rocks may, however, be improved through the application of soil micro-organisms able to promote rock solubilization and liberate the chemical elements from them. Among these micro-organisms there are the ectomycorrhizal fungi whose efficiency in rock solubilization has already been demonstrated by several authors (8,9,18,19,20).…”

Section: Introductionmentioning

confidence: 99%

“…These impacts may be minimized through the application of alternative nutrient sources, such as ground rock and mining waste (6,20).…”

Section: Introductionmentioning

confidence: 99%

Utilization of rocks and ectomycorrhizal fungi to promote growth of eucalypt

Alves¹,

Oliveira²,

Filho³

2010

Braz. J. Microbiol.

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The utilization of rocks as fertilizers is limited by their low solubility. However, solubilization may be achieved by some micro-organisms, such as ectomycorrhizal fungi (ECMf). The aim of this study was to evaluate the potential of seven isolates of ECMf to solubilize two rocks, alkaline breccia and granite, and to liberate potassium and phosphorus for Eucalyptus dunnii seedlings under greenhouse conditions. Fungal inoculants were produced in a peat-vermiculite-liquid medium mixture and added to the planting substrate at 10 %. Rocks were ground up and added at 0.500 mg and 16.0 mg per plant, as a source of phosphorus and potassium, respectively. Other nutrients were added and E. dunnii seeds were sown.Control plants, non-inoculated, were fertilized with the same amount of phosphorus and potassium using soluble forms. After 90 days, the plant height, shoot dry weight, root length, phosphorus and potassium contents, and mycorrhizal colonization were evaluated. Alkaline breccia was more efficient than granite as

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Effect of plant root symbionts on performance of native woody species in competition with an invasive grass in multispecies microcosms

Birnbaum

Morald

Tibbett

et al. 2018

Ecology and Evolution

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The majority of terrestrial plants form mutualistic associations with arbuscular mycorrhizal fungi (AMF) and rhizobia (i.e., nitrogen‐fixing bacteria). Understanding these associations has important implications for ecological theory and for restoration practice. Here, we tested whether the presence of AMF and rhizobia influences the performance of native woody plants invaded by a non‐native grass in experimental microcosms. We planted eight plant species (i.e., Acacia acuminata, A. microbotrya, Eucalyptus loxophleba subsp. loxophleba, E. astringens, Calothamnus quadrifidus, Callistemon phoeniceus, Hakea lissocarpha and H. prostrata) in microcosms of field‐conditioned soil with and without addition of AMF and rhizobia in a fully factorial experimental design. After seedling establishment, we seeded half the microcosms with an invasive grass Bromus diandrus. We measured shoot and root biomass of native plants and Bromus, and on roots, the percentage colonization by AMF, number of rhizobia‐forming nodules and number of proteaceous root clusters. We found no effect of plant root symbionts or Bromus addition on performance of myrtaceous, and as predicted, proteaceous species as they rely little or not at all on AMF and rhizobia. Soil treatments with AMF and rhizobia had a strong positive effect (i.e., larger biomass) on native legumes (A. microbotrya and A. acuminata). However, the beneficial effect of root symbionts on legumes became negative (i.e., lower biomass and less nodules) if Bromus was present, especially for one legume, i.e., A. acuminata, suggesting a disruptive effect of the invader on the mutualism. We also found a stimulating effect of Bromus on root nodule production in A. microbotrya and AMF colonization in A. acuminata which could be indicative of legumes’ increased resource acquisition requirement, i.e., for nitrogen and phosphorus, respectively, in response to the Bromus addition. We have demonstrated the importance of measuring belowground effects because the aboveground effects gave limited indication of the effects occurring belowground.

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Biological mobilization of potassium from clay minerals by ectomycorrhizal fungi and eucalypt seedling roots

Cited by 52 publications

References 21 publications

Mobilisation of potassium and phosphorus from iron ore by ectomycorrhizal fungi

Mobilisation of potassium and phosphorus from iron ore by ectomycorrhizal fungi

Utilization of rocks and ectomycorrhizal fungi to promote growth of eucalypt

Effect of plant root symbionts on performance of native woody species in competition with an invasive grass in multispecies microcosms

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