Mycorrhizae: Ectomycorrhizal Fungi

Molina, Randy; Caldwell, Bruce A.; Castellano, Michael A.; Horton, Thomas R.; Smith, Jane E.

doi:10.1002/0471263397.env208

Cited by 2 publications

(3 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vogt et al (1983) reported that 88% of Douglas-fir root tips were infected with mycorrhizal fungi in low fertility sites of western Washington, USA. The low nutrient status of these soils is likely a driver of the highly mycorrhizal nature of these systems, as mycorrhize greatly enhance the ability of infected hosts to access nutrients, and aid in decomposition of recalcitrant substances (Cairney and Chambers 1999; Molina et al 2002;Read and PerezMoreno 2003). It is very possible that at our site much of the belowground litter input comes not from roots directly, but from mycorrhizae associated with roots.…”

Section: Belowground Litter Contributionmentioning

confidence: 99%

Contribution of aboveground litter, belowground litter, and rhizosphere respiration to total soil CO2 efflux in an old growth coniferous forest

et al. 2005

View full text Add to dashboard Cite

In an old growth coniferous forest located in the central Cascade Mountains, Oregon, we added or removed aboveground litter and terminated live root activity by trenching to determine sources of soil respiration. Annual soil efflux from control plots ranged from 727 g C m À2 year À1 in 2002 to 841 g C m À2 year À1 in 2003. We used aboveground litter inputs (149.6 g C m À2 year À1 ) and differences in soil CO 2 effluxes among treatment plots to calculate contributions to total soil efflux by roots and associated rhizosphere organisms and by heterotrophic decomposition of organic matter derived from aboveground and belowground litter. On average, root and rhizospheric respiration (R r ) contributed 23%, aboveground litter decomposition contributed 19%, and belowground litter decomposition contributed 58% to total soil CO 2 efflux, respectively. These values fall within the range of values reported elsewhere, although our estimate of belowground litter contribution is higher than many published estimates, which we argue is a reflection of the high degree of mycorrhizal association and low nutrient status of this ecosystem. Additionally, we found that measured fluxes from plots with doubled needle litter led to an additional 186 g C m À2 year À1 beyond that expected based on the amount of additional carbon added; this represents a priming effect of 187%, or a 34% increase in the total carbon flux from the plots. This finding has strong implications for soil C storage, showing that it is inaccurate to assume that increases in net primary productivity will translate simply and directly into additional belowground storage.

show abstract

Section: Belowground Litter Contributionmentioning

confidence: 99%

Contribution of aboveground litter, belowground litter, and rhizosphere respiration to total soil CO2 efflux in an old growth coniferous forest

et al. 2005

View full text Add to dashboard Cite

show abstract

“…For instance, the fungi forming ectomycorrhizal symbioses number over 5000 species [1]. Analysis of natural ectomycorrhizal fungal communities traditionally has been a laborious, highly-skilled process with heavy reliance on gross morphological characterization of the ectomycorrhizal root-tips.…”

Section: Introductionmentioning

confidence: 99%

“…Primers allowing simultaneous analysis of all the fungal phyla which are involved in ectomycorrhizal symbioses would be a useful tool in studying the ecology of these fungi. Of particular interest for such work is the division Dikaryomycota, which includes the subdivisions Basidiomycotina and Ascomycotina, and encompasses all ectomycorrhizal fungi [1]. …”

Section: Introductionmentioning

confidence: 99%

Fungal-specific PCR primers developed for analysis of the ITS region of environmental DNA extracts

Martin¹,

2005

View full text Add to dashboard Cite

Background: The Internal Transcribed Spacer (ITS) regions of fungal ribosomal DNA (rDNA) are highly variable sequences of great importance in distinguishing fungal species by PCR analysis. Previously published PCR primers available for amplifying these sequences from environmental samples provide varying degrees of success at discriminating against plant DNA while maintaining a broad range of compatibility. Typically, it has been necessary to use multiple primer sets to accommodate the range of fungi under study, potentially creating artificial distinctions for fungal sequences that amplify with more than one primer set.

show abstract

Mycorrhizae: Ectomycorrhizal Fungi

Abstract: Host–Fungus Associations Structure and Function Ecology of Ectomycorrhizae Ecosystem Functions Physiology Practical Applications in Forestry

Cited by 2 publications

References 94 publications

Contribution of aboveground litter, belowground litter, and rhizosphere respiration to total soil CO2 efflux in an old growth coniferous forest

Contribution of aboveground litter, belowground litter, and rhizosphere respiration to total soil CO2 efflux in an old growth coniferous forest

Fungal-specific PCR primers developed for analysis of the ITS region of environmental DNA extracts

Contact Info

Product

Resources

About