Journal ArticleDOI
Land-use history has a stronger impact on soil microbial community composition than aboveground vegetation and soil properties
Kamlesh Jangid,Mark A. Williams,Alan J. Franzluebbers,Thomas M. Schmidt,David C. Coleman,William B. Whitman +5 more
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TLDR
History of land-use was a stronger determinant of the composition of microbial communities than vegetation and soil properties, and microbial communities in disturbed soils apparently return to their native state with time.Abstract:
The response of soil microbial communities following changes in land-use is governed by multiple factors. The objectives of this study were to investigate (i) whether soil microbial communities track the changes in aboveground vegetation during succession; and (ii) whether microbial communities return to their native state over time. Two successional gradients with different vegetation were studied at the W. K. Kellogg Biological Station, Michigan. The first gradient comprised a conventionally tilled cropland (CT), mid-succession forest (SF) abandoned from cultivation prior to 1951, and native deciduous forest (DF). The second gradient comprised the CT cropland, early-succession grassland (ES) restored in 1989, and long-term mowed grassland (MG). With succession, the total microbial PLFAs and soil microbial biomass C consistently increased in both gradients. While bacterial rRNA gene diversity remained unchanged, the abundance and composition of many bacterial phyla changed significantly. Moreover, microbial communities in the relatively pristine DF and MG soils were very similar despite major differences in soil properties and vegetation. After >50 years of succession, and despite different vegetation, microbial communities in SF were more similar to those in mature DF than in CT. In contrast, even after 17 years of succession, microbial communities in ES were more similar to CT than endpoint MG despite very different vegetation between CT and ES. This result suggested a lasting impact of cultivation history on the soil microbial community. With conversion of deciduous to conifer forest (CF), there was a significant change in multiple soil properties that correlated with changes in microbial biomass, rRNA gene diversity and community composition. In conclusion, history of land-use was a stronger determinant of the composition of microbial communities than vegetation and soil properties. Further, microbial communities in disturbed soils apparently return to their native state with time.read more
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Multiscale interactions between plant part and a steep environmental gradient determine plant microbial composition in a tropical watershed
Jared Bernard,Christopher B. Wall,Maria S. Costantini,Randi L. Rollins,Melissa L. Atkins,Feresa P. Cabrera,Nicolas D. Cetraro,Christian K. J. Feliciano,Austin L. Greene,Philip K. Kitamura,Alejandro Olmedo-Velarde,Vithanage N. S. Sirimalwatta,Helen W. Sung,Leah P. M. Thompson,Huong T. Vu,Chad J. Wilhite,Anthony S. Amend +16 more
TL;DR: Analysis of epiphytic microbes from nine Hibiscus tiliaceus trees across a steep environmental gradient within a single Hawaiian watershed identifies potential differences underlying the mechanisms shaping communities of fungi and bacteria associated with plants, and indicates an interaction between assembly mechanisms working simultaneously on different spatial scales.
Journal ArticleDOI
Grass-microbial inter-domain ecological networks associated with alpine grassland productivity
Yingcheng Wang,Ning Dang,Kai Feng,Junbang Wang,Xin Jin,Shiting Yao,Linlin Wang,Songsong Gu,Huakun Zheng,Guangxin Lu,Ye Deng +10 more
TL;DR: In this article , the authors investigated the relationship between grass productivity, diversity and microbial diversity, and the patterns of co-occurrence between grass and microbial inter-domain network in alpine grassland.
Journal ArticleDOI
Revegetation differentially influences microbial trophic groups in a Qinghai‐Tibetan alpine steppe ecosystem
Mingsen Qin,Mingsen Qin,Guoxi Shi,Jean-Pascal Miranda,Yongjun Liu,Yiming Meng,Jianbin Pan,Yuxing Chai,Shengjing Jiang,Guoying Zhou,Huyuan Feng,Huyuan Feng,Qi Zhang +12 more
TL;DR: These findings highlight that even the differences of microbial compositions were because of different revegetation treatments, but each trophic microbial composition had different relations with plant and/or soil; especially, the bacterial community and metabolic functions and saprotrophic fungal community were more correlated with soil properties rather than plant community or characteristics per se.
Posted ContentDOI
Impact of abiotic conditions on Fungal Diversity and Comparative analysis of Soil quality of two distinct locations
TL;DR: In this article , a correlation study of micro fungi found in ecologically two different regions (Karnataka state, India) of Uttara Kannada and Chitradurga districts.
Journal ArticleDOI
Deep mowing rather than fire restrains grassland Miscanthus growth via affecting soil nutrient loss and microbial community redistribution
TL;DR: In this article , the effects of fire and mowing on vegetation traits (Tiller number per cluster and plant height) and biomass (plant dry weight), and soil availability of N, P, and K, as well as soil microorganism abundance in a Miscanthus system were investigated.
References
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Journal ArticleDOI
Greengenes, a Chimera-Checked 16S rRNA Gene Database and Workbench Compatible with ARB
Todd Z. DeSantis,Philip Hugenholtz,Neils Larsen,Mark Rojas,Eoin L. Brodie,Keith Keller,Thomas Huber,Daniel Dalevi,Ping Hu,Gary L. Andersen +9 more
TL;DR: A 16S rRNA gene database (http://greengenes.lbl.gov) was used to provide chimera screening, standard alignment, and taxonomic classification using multiple published taxonomies as mentioned in this paper.
Journal ArticleDOI
The diversity and biogeography of soil bacterial communities
Noah Fierer,Robert B. Jackson +1 more
TL;DR: Bacterial diversity was highest in neutral soils and lower in acidic soils, with soils from the Peruvian Amazon the most acidic and least diverse in this study.
Journal ArticleDOI
Introducing DOTUR, a Computer Program for Defining Operational Taxonomic Units and Estimating Species Richness
Patrick D. Schloss,Jo Handelsman +1 more
TL;DR: A computer program, DOTUR, is developed, which assigns sequences to OTUs by using either the furthest, average, or nearest neighbor algorithm for each distance level, which addresses the challenge of assigning sequences to operational taxonomic units (OTUs) based on the genetic distances between sequences.
Journal ArticleDOI
Global patterns in bacterial diversity
Catherine A. Lozupone,Rob Knight +1 more
TL;DR: The most comprehensive analysis of the environmental distribution of bacteria to date, based on 21,752 16S rRNA sequences compiled from 111 studies of diverse physical environments, is reported in this article.
Journal ArticleDOI
The influence of soil properties on the structure of bacterial and fungal communities across land-use types
TL;DR: Soil pH was the best predictor of bacterial community composition across this landscape while fungal community composition was most closely associated with changes in soil nutrient status, suggesting specific changes in edaphic properties, not necessarily land-use type itself, may best predict shifts in microbialcommunity composition across a given landscape.
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