Ericoid mycorrhiza: a partnership that exploits harsh edaphic conditions

Cairney, John; Meharg, Andrew A.

doi:10.1046/j.1351-0754.2003.0555.x

Cited by 158 publications

(103 citation statements)

References 49 publications

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“…Bermudes and Benzing, 1989;Rains et al, 2003). These ericoid mycorrhizas can use complex organic sources of N and P, and we actually expected to find relatively high N concentration in Ericaceae (Cairney and Meharg, 2003;Grelet et al, 2003), quite in contrast to our current findings. However, we can discard the possibility that our results are exceptional because even lower leaf N values have been reported for two epiphytic Ericaceae from a rainforest in New Guinea (mean 0.4% N, Grubb and Edwards, 1982).…”

Section: Familycontrasting

confidence: 84%

Physiological diversity and biogeography of vascular epiphytes at Río Changuinola, Panama

Wester

Mendieta‐Leiva

Nauheimer

et al. 2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Familycontrasting

confidence: 84%

Physiological diversity and biogeography of vascular epiphytes at Río Changuinola, Panama

Wester

Mendieta‐Leiva

Nauheimer

et al. 2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…These very fine underground structures (usually with a distal diameter less than 100 μm) lack root hairs and harbour a myriad of symbiotic fungi, including mycorrhizal. Ericaceae primarily form ericoid mycorrhiza (ErM), and the importance of ericoid mycorrhizal fungi (ErMF) in their life is well-established (Leake et al 1989;Read 1996;Perotto et al 2002;Cairney and Meharg 2003). In contrast, far from clear is the role of dark septate endophytes (DSE), basidiomycetous ectomycorrhizal fungi (EcMF), arbuscular mycorrhizal fungi (AMF), and other symbiotic fungi, which can be detected in ericaceous roots using both molecular and microscopy-based approaches (Seviour et al 1973;Bonfante-Fasolo 1980;Koske et al 1990;Stoyke and Currah 1991;Smith et al 1995;Allen et al 2003;Bougoure and Cairney 2005;Chaurasia et al 2005;Selosse et al 2007).…”

Section: Introductionmentioning

confidence: 96%

The Co-occurrence and Morphological Continuum Between Ericoid Mycorrhiza and Dark Septate Endophytes in Roots of Six European Rhododendron Species

Vohník

Albrechtová

2011

Folia Geobot

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Ericaceae associate with a wide spectrum of root mycobionts, but the most common are ascomycetous ericoid mycorrhizal fungi and dark septate endophytes (DSE), followed by basidiomycetous fungi and glomeracean arbuscular mycorrhizal fungi. We investigated distribution and morphological diversity of ericoid mycorrhizae (ErM), DSE associations, ectomycorrhizae (EcM) and arbuscular mycorrhizae (AM) in hair roots of six European native Rhododendron species and found that i) while EcM and AM were absent, ErM and DSE associations were simultaneously present in all screened plants; ii) their levels were negatively correlated, suggesting Ericaceae preference for certain root-fungus association in certain habitats; iii) the highest ErM colonization occurred at sites in southern and central Europe, while the highest DSE colonization was found in a subarctic site in northern Finland and in a subalpine site in the Carpathians, suggesting a latitudinal/altitudinal shift in Ericaceae root-fungus associations; iv) some mycelia could simultaneously form structures corresponding to ErM and DSE association, which occasionally resulted in a unique ectendomycorrhizal colonization comprising an intercellular parenchymatous net and intracellular hyphal coils. These results indicate frequent interactions between ErM fungi and DSE in roots of European rhododendrons and a morphological continuum between ErM and DSE associations. The new ectendomycorrhizal type deserves further investigation.

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“…Ericoid mycorrhizal fungal endophytes, and sometimes their plant hosts, can evolve toxic metal resistance which enables ericoid mycorrhizal plants to colonize polluted soil. This seems to be a major factor in the success of ericoid mycorrhizal taxa in a range of harsh environments (Cairney & Meharg, 2003).…”

Section: Mycoremediation and The Mycorrhizospherementioning

confidence: 99%

Metals, minerals and microbes: geomicrobiology and bioremediation

2010

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Microbes play key geoactive roles in the biosphere, particularly in the areas of element biotransformations and biogeochemical cycling, metal and mineral transformations, decomposition, bioweathering, and soil and sediment formation. All kinds of microbes, including prokaryotes and eukaryotes and their symbiotic associations with each other and 'higher organisms', can contribute actively to geological phenomena, and central to many such geomicrobial processes are transformations of metals and minerals. Microbes have a variety of properties that can effect changes in metal speciation, toxicity and mobility, as well as mineral formation or mineral dissolution or deterioration. Such mechanisms are important components of natural biogeochemical cycles for metals as well as associated elements in biomass, soil, rocks and minerals, e.g. sulfur and phosphorus, and metalloids, actinides and metal radionuclides. Apart from being important in natural biosphere processes, metal and mineral transformations can have beneficial or detrimental consequences in a human context. Bioremediation is the application of biological systems to the clean-up of organic and inorganic pollution, with bacteria and fungi being the most important organisms for reclamation, immobilization or detoxification of metallic and radionuclide pollutants. Some biominerals or metallic elements deposited by microbes have catalytic and other properties in nanoparticle, crystalline or colloidal forms, and these are relevant to the development of novel biomaterials for technological and antimicrobial purposes. On the negative side, metal and mineral transformations by microbes may result in spoilage and destruction of natural and synthetic materials, rock and mineral-based building materials (e.g. concrete), acid mine drainage and associated metal pollution, biocorrosion of metals, alloys and related substances, and adverse effects on radionuclide speciation, mobility and containment, all with immense social and economic consequences. The ubiquity and importance of microbes in biosphere processes make geomicrobiology one of the most important concepts within microbiology, and one requiring an interdisciplinary approach to define environmental and applied significance and underpin exploitation in biotechnology. Microbes as geoactive agentsMicrobes interact with metals and minerals in natural and synthetic environments, altering their physical and chemical state, with metals and minerals also able to affect microbial growth, activity and survival. In addition, many minerals are biogenic in origin, and the formation of such biominerals is of global geological and industrial significance, as well as providing important structural components for many organisms, including important microbial groups such as diatoms, foraminifera and radiolaria (Ehrlich, 1996;Gadd & Raven, 2010). Geomicrobiology can simply be defined as the roles of microbes in geological processes (Banfield & Nealson, 1997;Banfield et al., 2005; Konhauser, 2007;Ehrlich & Newman, 2009). Metalminera...

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Ericoid mycorrhiza: a partnership that exploits harsh edaphic conditions

Cited by 158 publications

References 49 publications

Physiological diversity and biogeography of vascular epiphytes at Río Changuinola, Panama

Physiological diversity and biogeography of vascular epiphytes at Río Changuinola, Panama

The Co-occurrence and Morphological Continuum Between Ericoid Mycorrhiza and Dark Septate Endophytes in Roots of Six European Rhododendron Species

Metals, minerals and microbes: geomicrobiology and bioremediation

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