Relationships between fungal and bacterial substrate-induced respiration, biomass and plant residue decomposition

Neely, Constance; Beare, Michael H.; Hargrove, W. L.; Coleman, David C.

doi:10.1016/0038-0717(91)90175-j

Cited by 117 publications

(48 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Container habitats of mosquitoes are ecosystem mesocosms that are analogous to aquatic ecosystems that naturally occur in tree holes and other plant cavities [20]. These aquatic habitats support food webs that are dependent on detritus [8] and microbial communities that metabolize and mineralize organic carbon from detritus [29]. Based on sequence analysis of 16S rDNA amplicons, our investigation revealed that human-made water-filled containers and tree holes hold bacterial communities of mainly undescribed species.…”

Section: Discussionmentioning

confidence: 98%

See 1 more Smart Citation

Diversity of Bacterial Communities in Container Habitats of Mosquitoes

Ponnusamy

Stav

et al. 2008

Microb Ecol

View full text Add to dashboard Cite

We investigated the bacterial diversity of microbial communities in water-filled, human-made and natural container habitats of the mosquitoes Aedes aegypti and Aedes albopictus in suburban landscapes of New Orleans, Louisiana in 2003. We collected water samples from three classes of containers, including tires (n=12), cemetery urns (n=23), and miscellaneous containers that included two tree holes (n=19). Total genomic DNA was extracted from water samples, and 16S ribosomal DNA fragments (operational taxonomic units, OTUs) were amplified by PCR and separated by denaturing gradient gel electrophoresis (DGGE). The bacterial communities in containers represented diverse DGGE-DNA banding patterns that were not related to the class of container or to the local spatial distribution of containers. Mean richness and evenness of OTUs were highest in water samples from tires. Bacterial phylotypes were identified by comparative sequence analysis of 90 16S rDNA DGGE band amplicons. The majority of sequences were placed in five major taxa: Alpha-, Beta-and Gammaproteobacteria, Actinobacteria, Bacteroidetes, Cyanobacteria, Firmicutes, and an unclassified group; Proteobacteria and Bacteroidetes were the predominant heterotrophic bacteria in containers. The bacterial communities in human-made containers consisted mainly of undescribed species, and a phylogenetic analysis based on 16S rRNA sequences suggested

show abstract

Section: Discussionmentioning

confidence: 98%

“…Container habitats of mosquitoes are ecosystem mesocosms, supporting food webs that are dependent on detritus [20] and microbial communities that metabolize and mineralize organic carbon from detritus [27,29]. Catabolism of detritus by microbes also produces metabolites that attract gravid mosquitoes and stimulate egg laying [4].…”

Section: Introductionmentioning

confidence: 99%

Diversity of Bacterial Communities in Container Habitats of Mosquitoes

Ponnusamy

Stav

et al. 2008

Microb Ecol

View full text Add to dashboard Cite

show abstract

“…1). We assume that k Rm > k Sm represents the difference in litter quality (m = R or S) and that k RR > k RS and k SR < k SS represent the functional complementarity (31,32), where k jm is the decomposition coefficient of D j by M m (j, m = R or S; Methods). The assimilation efficiency (e Mj ) is the fraction of mineralized organic nutrient that is assimilated into a biomass of M j (j = R or S) (i.e., microbial immobilization), and 1 − e Mj is the fraction released to the nutrient pool (i.e., net mineralization).…”

Section: Modelmentioning

confidence: 99%

Functional diversity of microbial decomposers facilitates plant coexistence in a plant–microbe–soil feedback model

Miki

Ushio

Fukui

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

140

117

View full text Add to dashboard Cite

Theory and empirical evidence suggest that plant-soil feedback (PSF) determines the structure of a plant community and nutrient cycling in terrestrial ecosystems. The plant community alters the nutrient pool size in soil by affecting litter decomposition processes, which in turn shapes the plant community, forming a PSF system. However, the role of microbial decomposers in PSF function is often overlooked, and it remains unclear whether decomposers reinforce or weaken littermediated plant control over nutrient cycling. Here, we present a theoretical model incorporating the functional diversity of both plants and microbial decomposers. Two fundamental microbial processes are included that control nutrient mineralization from plant litter: (i) assimilation of mineralized nutrient into the microbial biomass (microbial immobilization), and (ii) release of the microbial nutrients into the inorganic nutrient pool (net mineralization). With this model, we show that microbial diversity may act as a buffer that weakens plant control over the soil nutrient pool, reversing the sign of PSF from positive to negative and facilitating plant coexistence. This is explained by the decoupling of litter decomposability and nutrient pool size arising from a flexible change in the microbial community composition and decomposition processes in response to variations in plant litter decomposability. Our results suggest that the microbial community plays a central role in PSF function and the plant community structure. Furthermore, the results strongly imply that the plant-centered view of nutrient cycling should be changed to a plant-microbe-soil feedback system, by incorporating the community ecology of microbial decomposers and their functional diversity.here is a long-standing view that a plant controls the soil conditions (e.g., size of inorganic nutrient pool) via litter supply in terrestrial ecosystems. On the basis of this view, a plant community and local soil conditions are understood as an outcome of the plant-soil codevelopment process. A change in the composition of a plant community leads to a change in litter quality, which alters the local nutrient cycling process and soil conditions; the changed soil conditions may in turn drive a further change in plant community composition. Those two processes taken together form a plant-soil feedback (PSF), a major driver of plant community dynamics and nutrient cycling [1, 2 (and references therein), 3].Litter quality is a key plant trait that determines whether PSF supports or inhibits the coexistence of plant species. Both empirical (4-6) and theoretical (7-9) evidence indicate that litter-mediated PSF from the dominant species in a plant community can be positive (favoring species dominance) or negative (favoring competitor invasion), depending on the combinations of litter quality and nutrient competition strategy. If the dominant species favors nutrient-rich sites and produces a quickly decomposing litter, then the accelerated nutrient cycling maintains a competitive advantage...

show abstract

“…Bold-italic factors correspond to the indicators which are considered highly influential on soil microbial community. (Ferreira et al, 2014;Kivaisi et al, 1990), 이러한 조건은 Gb 처리구의 사상균 증식을 증가시킨 것으로 보인다 (Neely et al, 1991). …”

Section: 미생물은 살아있는 토양의 구성요소로 작물의 양분순환mentioning

confidence: 99%

Effects of Continuous Application of Green Manures on Microbial Community in Paddy Soil

Kim¹,

Kim²,

Choi³

et al. 2015

Korean Journal of Soil Science and Fertilizer

View full text Add to dashboard Cite

Green manure crops have been well recognized as the alternative for chemical fertilizer, especially N fertilizer, because of its positive effect on soil and the environment. Hairy vetch and green barley are the most popular crops for cultivation of rice in paddy field. This study was conducted to evaluate effects of hairy vetch and green barley on soil microbial community and chemical properties during short-term application (three years). For this study, treatments were composed of hairy vetch (Hv), green barley (Gb), hairy vetch + green barley (Hv+Gb), and chemical fertilizer without green manure crops (Con.). Hv+Gb treatment showed the highest microbial biomass among treatments. Principal component analysis (PCA) showed that PC1 (73.0 %) was affected by microbial biomass and PC2 (21.5 %) was affected by fungi, cy19:0/18:1ω7c (stress indicator). Combined treatment with hairy vetch and green barley could be more efficient than green manure crop treatment as well as chemical fertilizer treatment for improvement of soil microorganisms.

show abstract

Relationships between fungal and bacterial substrate-induced respiration, biomass and plant residue decomposition

Cited by 117 publications

References 50 publications

Diversity of Bacterial Communities in Container Habitats of Mosquitoes

Diversity of Bacterial Communities in Container Habitats of Mosquitoes

Functional diversity of microbial decomposers facilitates plant coexistence in a plant–microbe–soil feedback model

Effects of Continuous Application of Green Manures on Microbial Community in Paddy Soil

Contact Info

Product

Resources

About