Actinomycetes inducing phytotoxic or fungistatic activity in a Douglas-fir Forest and in an adjacent area of repeated regeneration failure in Southwestern Oregon

Friedman, Jacob E.; Hutchins, Anita Stiebrs; Li, C. Y.; Perry, David A.

doi:10.1007/bf02876222

Cited by 15 publications

(6 citation statements)

References 12 publications

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“…Streptomyces are known to produce chemicals that inhibit plants and other microorganisms, including both mycorrhizal and pathogenic fungi. Streptomyces has been linked to reforestation failures in the Klamath Mountains (Friedman et al, 1989;Perry and Rose, 1983).…”

Section: Linkages In Timementioning

confidence: 98%

The functioning of ectomycorrhizal fungi in the field: linkages in space and time

Amaranthus

Perry

1994

Plant Soil

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Individual trees, either of the same or different species, can be linked spatially and temporally by the hyphae of ectomycorrhizal (ECM) fungi that allow carbon and nutrients to pass among them and promote forest establishment following disturbance. Spatial and temporal linkages between plants influence the function of ECM fungi in the field. Studies indicate that ECM linkages can reduce plant competition for resources, promote forest recovery, and influence the pattern of plant succession. The degree of influence depends on many factors, including the composition and arrangement of the vegetative community and soil and climatic conditions. Management practices that create intense disturbance and loss of organic matter or promote the introduction of non-ectomycorrhizal host species can decrease the ability of plants to form linkages with ECM fungi. Management practices that retain living trees and shrubs and input of organic matter provide the energy source and substrate necessary for ECM linkages. More research is needed to determine the degree to which ECM fungal linkages occur in the field and their role in ecosystem function and long-term health.

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Section: Linkages In Timementioning

confidence: 98%

The functioning of ectomycorrhizal fungi in the field: linkages in space and time

Amaranthus

Perry

1994

Plant Soil

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“…It is very difficult to determine the relative influence of chemical, physical and biological soil characteristics on the ECM fungal community because they are interrelated. For example, changes in the microflora can affect ectomycorrhiza formation directly (Garbaye & Bowen, 1987; Summerbell, 1987; Friedman et al ., 1989) or indirectly via changes in decomposition and nitrogen mineralisation rates (Jurgensen et al ., 1997; Forge & Simard, 2000; Prescott et al ., 2000). In one of the few studies specifically targeted at chemical or physical factors, Parke et al .…”

Section: Which Is the Most Important Factor Driving Changes In Thmentioning

confidence: 99%

Ectomycorrhizal fungal communities in young forest stands regenerating after clearcut logging

2003

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Contents Summary399 Introduction400 Population biology and inoculum potential of ectomycorrhizal fungi401 Ectomycorrhiza development on seedlings regenerating after clearcut logging402 Which is the most important factor driving changes in the ECM fungal community after clearcut logging: inoculum loss or change in the below‐ground environment?406 Possible consequences for regenerating stands of species shifts in ectomycorrhizal fungi414 Conclusions416 Summary The effects on the ectomycorrhizal fungal community of clearcut logging, which is used to harvest millions of hectares of ectomycorrhizal forest annually, has been studied for a number of years. Here, we review current knowledge of inoculum sources for ectomycorrhizal fungi in forests and then re‐examine earlier studies of ectomycorrhizas on young trees in regenerating stands. We conclude that, taken separately from the effects of site preparation, the major impact of clearcut logging is to change the species composition of the ectomycorrhizal fungal community rather than to reduce the percentage of roots colonized. A thorough examination of site preparation treatments suggests that the changes in fungal species composition are driven by changes in the biology and chemistry of the soil environment after clearcutting as much as they are by loss or change in fungal inoculum. This is an important conclusion because it implies that these new ectomycorrhizal fungal communities are better adapted to the new conditions than the ones in the forest would have been. The shift in fungal species composition and diversity will have implications for seedling establishment and competition. The effects of individual fungi or diverse assemblages of fungi on seedling growth, and effects of changes in the ability of young trees to associate with a common mycelium are discussed.

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“…There is also evidence of allelopathic suppression of mycorrhizae by actinomycetes (Friedman et al 1989). Addition of a fresh shoot of the aromatic shrub Coridothymus capitatus into soil resulted in an increase of population of actinomycetes (Katz et al 1987).…”

Section: Validity Of Protocols For the Establishment Of Allelopathic mentioning

confidence: 99%

Plant allelochemical interference or soil chemical ecology?

Inderjit

Weiner

2001

Perspectives in Plant Ecology, Evolution and Systematics

171

114

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Actinomycetes inducing phytotoxic or fungistatic activity in a Douglas-fir Forest and in an adjacent area of repeated regeneration failure in Southwestern Oregon

Cited by 15 publications

References 12 publications

The functioning of ectomycorrhizal fungi in the field: linkages in space and time

The functioning of ectomycorrhizal fungi in the field: linkages in space and time

Ectomycorrhizal fungal communities in young forest stands regenerating after clearcut logging

Plant allelochemical interference or soil chemical ecology?

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