The role of mycorrhizal infection in the tolerance of Vaccinium macrocarpon to iron

Hashem, Abdulwahab R.

doi:10.1007/s005720050096

Cited by 2 publications

(6 citation statements)

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“…So, too, is the relationship between Ericaceae and leafy liverworts with respect to their abilities to form associations with the same group of fungi. The ability of ericoid mycorrhizal endophytes from northern hemisphere Ericaceae to form mycorrhiza-like hyphal complexes in the rhizoids of certain leafy liverwort families has been clearly demonstrated (Duckett & Read, 1991, 1995. Similar infection has also been observed in some liverworts from Antarctica (Williams et al, 1994) and an eastern Australian sclerophyll forest habitat inhabited by several epacrid taxa .…”

Section: Evolution Of Ericoid Mycorrhizas In Epacridsmentioning

confidence: 70%

Section: Epacrid Plant Hostsmentioning

confidence: 99%

“…For Cu and Zn, at least, there is convincing evidence that mycorrhizal infection can confer a degree of metal resistance on an otherwise metal sensitive Ericaceae host (Bradley et al. , 1981, 1982; Hashem, 1990, 1995). In this way, ericoid mycorrhizal infection is regarded as important in colonisation of metal contaminated sites by certain Ericaceae taxa (Meharg & Cairney, 2000).…”

Section: Epacrid Plant Hostsmentioning

confidence: 99%

“…Ericoid mycorrhizal fungal partners of northern hemisphere Ericaceae are regarded as resistant to a range of potentially toxic metals including Al, Cu, Fe, Pb and Zn (Bradley et al, 1981(Bradley et al, , 1982Hashem, 1990Hashem, , 1995Burt et al, 1986). For Cu and Zn, at least, there is convincing evidence that mycorrhizal infection can confer a degree of metal resistance on an otherwise metal sensitive Ericaceae host (Bradley et al, 1981(Bradley et al, , 1982Hashem, 1990Hashem, , 1995. In this way, ericoid mycorrhizal infection is regarded as important in colonisation of metal contaminated sites by certain Ericaceae taxa .…”

Section: Functional Aspects Of Mycorrhizas In Epacridsmentioning

confidence: 99%

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Biology of mycorrhizal associations of epacrids (Ericaceae)

Cairney

Ashford

2002

New Phytologist

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SummaryEpacrids, a group of southern hemisphere plants formerly considered members of the separate family Epacridaceae, are in fact most closely allied to the Vaccinioid tribe (Ericaceae). Epacrids and other extant ericoid mycorrhiza-forming plants appear to have a monophyletic origin. In common with many Ericaceae they form ericoid mycorrhizas. ITS sequence data indicate that the fungi forming ericoid mycorrhizas with epacrids and other extant Ericaceae are broadly similar, belonging to a poorly defined group of ascomycetes with phylogenetic affinities to Helotiales. The basic development and structure of ericoid mycorrhizal infections in epacrids is similar to other Ericaceae. However, data are limited on the structure and physiology of both hair roots and ericoid mycorrhizas for all Ericaceae. Relatively little is known about the functional significance of ericoid mycorrhizas in epacrids in southern hemisphere habitats that are often poor in organic matter accumulation. However the abilities of fungal endophytes of epacrids to utilize organic N and P substrates equal those of endophytes from northern hemisphere heathland plant hosts. Investigations using 15 N/ 13 C-labelled organic N substrates suggest that mycorrhizal endophytes are important, at least, to the N nutrition of their epacrid hosts in some habitats.© New Phytologist (2002) 154: 305 -326

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Section: Evolution Of Ericoid Mycorrhizas In Epacridsmentioning

confidence: 70%

Section: Epacrid Plant Hostsmentioning

confidence: 99%

Section: Epacrid Plant Hostsmentioning

confidence: 99%

Section: Functional Aspects Of Mycorrhizas In Epacridsmentioning

confidence: 99%

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Biology of mycorrhizal associations of epacrids (Ericaceae)

Cairney

Ashford

2002

New Phytologist

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“…These include those with acid mor humus, on serpentine and on metalliferous mine spoils (Bradley et al ., 1982). Ericoid mycorrhizal endophytes have considerable resistance to metals, including aluminium, copper, iron, lead and zinc (Bradley et al ., 1981, 1982; Burt et al ., 1986; Hashem, 1990, 1995). Ericoid mycorrhizal plant shoots typically contain less metal than their non‐mycorrhizal equivalents and, for copper and zinc at least, mycorrhizal infection seems to bestow significant resistance to metals upon a host that is otherwise sensitive to the metals (Bradley et al ., 1981, 1982; Hashem, 1990, 1995).…”

Section: Why Are Ericoid Mycorrhiza Formers Successful In Stressful Ementioning

confidence: 99%

Ericoid mycorrhiza: a partnership that exploits harsh edaphic conditions

Cairney

Meharg

2003

European J Soil Science

162

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Summary Plants that form ericoid mycorrhizal associations are widespread in harsh habitats. Ericoid mycorrhizal fungal endophytes are a genetically diverse group, and they appear to be able to alleviate certain environmental stresses and so facilitate the establishment and survival of Ericaceae. Some of the fungal taxa that form ericoid mycorrhizas, or at least closely related strains, also form associations with other plant hosts (trees and leafy liverworts). The functional significance of these associations and putative mycelial links between Ericaceae and other plant taxa, however, remain unclear. Evidence from environments that are contaminated by toxic metals indicates that ericoid mycorrhizal fungal endophytes, and in some instances their plant hosts, can evolve resistance to these metals. The apparent ability of these endophytes to develop resistance 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.

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The role of mycorrhizal infection in the tolerance of Vaccinium macrocarpon to iron

Cited by 2 publications

References 0 publications

Biology of mycorrhizal associations of epacrids (Ericaceae)

Biology of mycorrhizal associations of epacrids (Ericaceae)

Ericoid mycorrhiza: a partnership that exploits harsh edaphic conditions

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