Fungal and Bacterial Production during the Breakdown of Yellow Poplar Leaves in 2 Streams

Weyers, Holly S.; Suberkropp, Keller

doi:10.2307/1467795

Cited by 132 publications

(114 citation statements)

References 30 publications

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“…Overall, bacterial biomass values obtained in our study were comparable to those in other studies (2,14,70). In a study by Baldy et al (1), the greatest bacterial biomass was observed on leaves of the London plane tree (Platanus hybrida), the species with the slowest breakdown rate in their study.…”

Section: Discussionsupporting

confidence: 90%

“…In addition, variability of bacterial biomass on sugar maple leaves suggests that as it decays, it can provide a more dynamic and variable environment than oak leaves. We observed greater fungal biomass than bacterial biomass throughout our study, as has been reported by others (2,14,21,70). Greater fungal biomass likely occurs because fungi are more efficient than bacteria (except for a few tunneling bacteria [10,49,69]) in exploiting available resources through invasion and enzymatic hydrolysis of leaf material and lysed hyphae (9,56).…”

Section: Discussionsupporting

confidence: 82%

“…Yet, in spite of these differences in decomposition and known differences in leaf chemistry (47), few differences in the microbial community were detected between the leaf species. For example, fungal biomass did not differ between the leaf types, although peak fungal biomass estimates were within the range of values reported in the literature for leaves in streams (2,14,70).…”

Section: Discussionsupporting

confidence: 80%

“…The effects of environmental variables on microbial communities are routinely evaluated to explain changes in biomass and community structure (44,70). Among physical variables, the role of temperature in controlling bacterial biomass on decaying litter is not consistent across studies, with some reporting significant temperature effects (70) and others reporting no effect of temperature (14).…”

Section: Discussionmentioning

confidence: 99%

“…Yet, most studies of leaf decomposition in streams provide no information on the diversity of bacteria (1,2), focusing solely on fungi (21,28). In some studies, the aquatic hyphomycete species are listed (2,70), but for bacteria, generally total numbers, biomass, or production rates are reported without information on the taxa present (1,2,23,63).…”

mentioning

confidence: 99%

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Diversity of Fungi, Bacteria, and Actinomycetes on Leaves Decomposing in a Stream

Das

Royer

Leff

2007

Appl Environ Microbiol

191

137

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Although fungi, bacteria, and specific bacterial taxa, such as the actinomycetes, have been studied extensively in various habitats, few studies have examined them simultaneously, especially on decomposing leaves in streams. In this study, sugar maple and white oak leaves were incubated in a stream in northeastern Ohio for 181 days during which samples were collected at regular intervals. Following DNA extraction, PCRdenaturing gradient gel electrophoresis (DGGE) was performed using fungus-, bacterium-, and actinomycetespecific primers. In addition, fungal and bacterial biomass was estimated. Fungal biomass differed on different days but not between leaves of the two species and was always greater than bacterial biomass. There were significant differences in bacterial biomass through time and between leaf types on some days. Generally, on the basis of DGGE, few differences in community structure were found for different leaf types. However, the ribotype richness of fungi was significantly greater than those of the bacteria and actinomycetes, which were similar to each other. Ribotype richness decreased toward the end of the study for each group except bacteria. Lack of differences between the two leaf types suggests that the microorganisms colonizing the leaf biofilm were primarily generalists that could exploit the resources of the leaves of either species equally well. Thus, we conclude that factors, such as the ecological role of the taxa (generalists versus specialists), stage of decay, and time of exposure, appeared to be more important determinants of microbial community structure than leaf quality.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Diversity of Fungi, Bacteria, and Actinomycetes on Leaves Decomposing in a Stream

Das

Royer

Leff

2007

Appl Environ Microbiol

191

137

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Stream Microbiology

Leff

2003

Encyclopedia of Environmental Microbiology

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Physical Features of Streams Streams and their Watershed Stream Food Webs Viruses Bacteria Protozoa Fungi Algae

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Water Fungi as Decomposers in Freshwater Ecosystems

Gessner¹,

Ryckegem

2003

Encyclopedia of Environmental Microbiology

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An Overview of Fungal Systematics Diversity, Distribution and Dispersal The Mycelial Growth Form Sources of Organic Matter Leaf Litter Decomposers in Streams Wood Decomposers in Streams Decomposers in Freshwater Marshes

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Fungal and Bacterial Production during the Breakdown of Yellow Poplar Leaves in 2 Streams

Cited by 132 publications

References 30 publications

Diversity of Fungi, Bacteria, and Actinomycetes on Leaves Decomposing in a Stream

Diversity of Fungi, Bacteria, and Actinomycetes on Leaves Decomposing in a Stream

Stream Microbiology

Water Fungi as Decomposers in Freshwater Ecosystems

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