Carbon input and allocation by rice into paddy soils: A review
Publication date: Available online 3 March 2019Source: Soil Biology and BiochemistryAuthor(s): Yalong Liu, Tida Ge, Zhenke Zhu, Shoulong Liu, Yu Luo, Yong Li, Ping Wang, Olga Gavrichkova, Xingliang Xu, Jingkuan Wang, Jinshui Wu, Georg Guggenberger, Yakov KuzyakovAbstractKnowledge of belowground C input by rice plants and its fate is essential for managing C cycling and sequestration in paddy soils. Previous reviews have summarized C input and the pathways of root-derived C in upland soils by labeling with 14C or 13C (13/14C), while rice rhizodeposition and C input in paddy soils have not been comprehensively evaluated. Her...
Source: Soil Biology and Biochemistry - March 4, 2019 Category: Biology Source Type: research

Consistent spatial distribution patterns of bacterial communities revealed by serial time-archived soils from long-term field experiments
Publication date: Available online 3 March 2019Source: Soil Biology and BiochemistryAuthor(s): Jie Liu, Zhiying Guo, Aiai Xu, Changkun Wang, Shiwen Wu, Ya Liu, Kai Pan, Fangfang Zhang, Xianzhang PanAbstractMany precious air-dried soil samples are currently stored by institutions across the world, and they have been proved useful in retrieving historical information of soil microbial ecology, such as the shifts of microbial populations and the effects of agricultural managements on soil microbial communities. However, most of those retrospective studies on microorganisms in archived soils were mainly conducted through PCR-D...
Source: Soil Biology and Biochemistry - March 4, 2019 Category: Biology Source Type: research

Warming counteracts grazing effects on the functional structure of the soil microbial community in a Tibetan grassland
Publication date: Available online 27 February 2019Source: Soil Biology and BiochemistryAuthor(s): Li Tang, Lei Zhong, Kai Xue, Shiping Wang, Zhihong Xu, Qiaoyan Lin, Caiyun Luo, Yichao Rui, Xiangzhen Li, Ming Li, Wen-tso Liu, Yunfeng Yang, Jizhong Zhou, Yanfen WangAbstractGrazing intensity and global warming are expected to increase in the forthcoming decades, with uncertain consequences for their interaction on grassland ecosystems and their functions. We investigated the effects of warming, grazing and their interaction in a factorial warming (+1.2–1.7 °C) and grazing (moderate intensity with ca. 50% vege...
Source: Soil Biology and Biochemistry - February 28, 2019 Category: Biology Source Type: research

Temporal fate of 15N and 14C leaf-fed to red and white clover in pure stand or mixture with grass – Implications for estimation of legume derived N in soil and companion species
Publication date: Available online 27 February 2019Source: Soil Biology and BiochemistryAuthor(s): Jim Rasmussen, Thórey Gylfadóttir, Nawa Raj Dhalama, Chiara De Notaris, Thomas KättererAbstractThe supply of nitrogen (N) from legumes is a key in maintaining soil N fertility in plant production with low fertilizer N inputs. Leaf-feeding of isotope tracers is a commonly used methodology to study the flow of carbon (C) and N from legumes into soil and companion plants. Here we investigated the temporal fate of 15N and 14C fed as a single-pulse via leaves to red and white clover in pure stands and in mixture...
Source: Soil Biology and Biochemistry - February 27, 2019 Category: Biology Source Type: research

Soil microbial functions are affected by organic matter removal in temperate deciduous forest
Publication date: Available online 27 February 2019Source: Soil Biology and BiochemistryAuthor(s): François Maillard, Valentin Leduc, Cyrille Bach, Arnaud Reichard, Laure Fauchery, Laurent Saint-André, Bernhard Zeller, Marc BuéeAbstractA growing demand for renewable carbon (C) has led to intensified forest management resulting in the use of forest residues (e.g. canopy, bark or litter layer) as energy sources with potential modifications of soil properties and tree productivity. Because microbes mediate the recycling of C and nutrients sequestered in organic matter, we investigated the effects of organ...
Source: Soil Biology and Biochemistry - February 27, 2019 Category: Biology Source Type: research

Cascading effects associated with climate-change-induced conifer mortality in mountain temperate forests result in hot-spots of soil CO2 emissions
Publication date: Available online 26 February 2019Source: Soil Biology and BiochemistryAuthor(s): J. Curiel Yuste, D. Flores-Rentería, D. García-Angulo, A.-M. Hereş, C. Bragă, A.-M. Petritan, I.C. PetritanAbstractAs a widespread phenomenon affecting terrestrial ecosystems worldwide, the extent and spatio-temporal scales at which the increasing number of reported events of climate-change-induced tree mortality could affect the ecology and carbon (C) sink capacity of terrestrial soils, remains unknown. We here study how regional-scale drought-induced tree mortality events registered after a very dry 2012 yea...
Source: Soil Biology and Biochemistry - February 26, 2019 Category: Biology Source Type: research

Wide-spread limitation of soil organic nitrogen transformations by substrate availability and not by extracellular enzyme content
Publication date: Available online 26 February 2019Source: Soil Biology and BiochemistryAuthor(s): Lisa Noll, Shasha Zhang, Qing Zheng, Yuntao Hu, Wolfgang WanekAbstractProteins constitute the single largest soil organic nitrogen (SON) reservoir and its decomposition drives terrestrial N availability. Protein cleavage by extracellular enzymes is the rate limiting step in the soil organic N cycle and can be controlled by extracellular enzyme production or protein availability/stabilization in soil. Both controls can be affected by geology and land use, as well as be vulnerable to changes in soil temperature and moisture/O2....
Source: Soil Biology and Biochemistry - February 26, 2019 Category: Biology Source Type: research

Separate drivers for microbial carbon mineralization and physical protection of carbon
Publication date: Available online 26 February 2019Source: Soil Biology and BiochemistryAuthor(s): Anna M. Cates, Michael J. Braus, Thea L. Whitman, Randall D. JacksonAbstractWhile the effects of temperature and moisture on soil microbial activity are relatively well-understood, and it is well-recognized that microbial byproducts are a critical source of soil C, our understanding of how temperature and moisture affect physical protection of soil C is lacking. We performed a 6-month incubation of soil and plant litter under varying temperature and moisture. Using 13C-depleted plant litter, we used stable isotope partitionin...
Source: Soil Biology and Biochemistry - February 26, 2019 Category: Biology Source Type: research

Pyrogenic carbon content and dynamics in top and subsoil of French forests
Publication date: Available online 23 February 2019Source: Soil Biology and BiochemistryAuthor(s): Laure Soucémarianadin, Moritz Reisser, Lauric Cécillon, Pierre Barré, Manuel Nicolas, Samuel AbivenAbstractPyrogenic carbon (PyC) may leave the soil surface where it is deposited, either through degradation, lateral transport or transfer within the profile. However, PyC has been seldom measured in the subsoil. We estimated the quantity and molecular composition of PyC in the topsoil and subsoil of 22 French forests with diverse soil types and vegetation cover. While the absolute PyC content decreased with...
Source: Soil Biology and Biochemistry - February 24, 2019 Category: Biology Source Type: research

Regulation of soil phosphorus cycling in grasslands by shrubs
Publication date: Available online 23 February 2019Source: Soil Biology and BiochemistryAuthor(s): Xiao-Li Gao, Xiao Gang Li, Ling Zhao, Yakov KuzyakovAbstractThe globally expanding colonization of grasslands by shrubs increases soil organic carbon and nitrogen, but the effects of shrubs on phosphorus (P) cycling have been rarely studied. We compared P contents in roots and soil fractions, phosphatase activity in the 1 m profile, and in situ net P mineralization between shrubby Potentilla fruticosa patches and grassy interspaces in grazed shrubby meadows at three representative sites on the eastern Tibetan Plateau. The P...
Source: Soil Biology and Biochemistry - February 23, 2019 Category: Biology Source Type: research

Spatial pattern of enzyme activities depends on root exudate composition
Publication date: Available online 19 February 2019Source: Soil Biology and BiochemistryAuthor(s): Xuechen Zhang, Michaela A. Dippold, Yakov Kuzyakov, Bahar S. RazaviAbstractRoots increase microbial activities depending on exudate composition, especially on the ratios of sugars, carboxylic and amino acids, and thus structure enzyme activities in the rhizosphere. We introduce a new approach combining soil zymography and simulated exudates released from Rhizon® samplers to stimulate microbial activities but avoid the direct release of enzymes by living roots. This enabled visualizing, localizing and analyzing the effects...
Source: Soil Biology and Biochemistry - February 20, 2019 Category: Biology Source Type: research

Soil NO3− level and O2 availability are key factors in controlling N2O reduction to N2 following long-term liming of an acidic sandy soil
Publication date: Available online 19 February 2019Source: Soil Biology and BiochemistryAuthor(s): Mehmet Senbayram, Alice Budai, Roland Bol, David Chadwick, Laszlo Marton, Recep Gündogan, Di WuAbstractLiming of acidic soils has been suggested as a strategy to enhance N2O reduction to N2 during heterotrophic denitrification, and mitigate N2O emission from N fertilised soils. However, the mechanisms involved and possible interactions of key soil parameters (NO3− and O2) still need to be clarified. To explore to what extent soil pH controls N2O emissions and the associated N2O/(N2O + N2) product ratio in...
Source: Soil Biology and Biochemistry - February 20, 2019 Category: Biology Source Type: research

Distinct methanotrophic communities exist in habitats with different soil water contents
Publication date: Available online 18 February 2019Source: Soil Biology and BiochemistryAuthor(s): Liyan Zhang, Jonathan Adams, Marc G. Dumont, Yuntao Li, Yu Shi, Dan He, Jin-Sheng He, Haiyan ChuAbstractAerobic methane oxidizing bacteria play a key role in controlling global climate by reducing methane (CH4) emissions in natural ecosystems. We studied the community assembly processes and co-occurrence interactions of soil methanotrophs in three habitats (an alpine meadow, a marsh meadow, and a marsh) from Qinghai-Tibetan Plateau. Methanotrophic communities and CH4 oxidation potentials varied considerably between the habita...
Source: Soil Biology and Biochemistry - February 19, 2019 Category: Biology Source Type: research

Microbial photosynthetic and photoprotective pigments in Himalayan soils originating from different elevations and successional stages
Publication date: Available online 16 February 2019Source: Soil Biology and BiochemistryAuthor(s): Klara Rehakova, Katerina Capkova, Pavel Hrouzek, Michal Koblizek, Jiri DolezalAbstractSoil microbes evolved complex metabolic strategies including photoprotective and photosynthetic pigments to survive the environmental stress including high UV irradiance, oscillating temperature and drought. Despite pigment importance for survival of soil microbes in alpine ecosystems, there have been few efforts documenting the soil pigment content, diversity and the dependence on microbial soil community, soil physico-chemical properties a...
Source: Soil Biology and Biochemistry - February 16, 2019 Category: Biology Source Type: research

Distinct pattern of nitrogen functional gene abundances in top- and subsoils along a 120,000-year ecosystem development gradient
In this study, nitrogen functional genes of ammonia-oxidizers (amoA), nitrate-reducers (narG), and chitin-degraders (chiA) were determined via quantitative PCR and the functional community composition of archaeal ammonia-oxidizers was analyzed via clone libraries and DNA sequencing (amoA) in soil depth profiles along the 120,000-year Franz Josef chronosequence (New Zealand). The results show that absolute nitrogen functional gene abundances change significantly during long-term soil development. In organic layers, narG and chiA gene abundances were highest in young to intermediate-aged soils and then decreased following pr...
Source: Soil Biology and Biochemistry - February 13, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: April 2019Source: Soil Biology and Biochemistry, Volume 131Author(s): (Source: Soil Biology and Biochemistry)
Source: Soil Biology and Biochemistry - February 11, 2019 Category: Biology Source Type: research

Warming alters fungal communities and litter chemistry with implications for soil carbon stocks
Publication date: Available online 10 February 2019Source: Soil Biology and BiochemistryAuthor(s): Eric W. Morrison, Anne Pringle, Linda T.A. van Diepen, A. Stuart Grandy, J.M. Melillo, Serita D. FreyAbstractRates of leaf litter decay are generally expected to accelerate with increasing temperature. However, chronic temperature elevation may cause changes in the quality of litter residues or in the composition of decomposer communities that result in unexpected decay responses. We performed a 23-month litter decomposition study at a long-term soil warming experiment to determine how soil warming affects litter decay rate, ...
Source: Soil Biology and Biochemistry - February 10, 2019 Category: Biology Source Type: research

An experimental test of the multi-scalar impacts of digging mammal reintroductions on invertebrate burrows
We examined the micro-site (pit-scale) effects of mammal foraging pits on invertebrate burrowing activity by comparing natural and artificial pits and bare-ground, and artificial pits of different dimensions within different microhabitat types. To test how mammals affected invertebrate burrows and soil physical and chemical properties at larger scales, we used an exclusion experiment (plot-scale) and surveys inside and outside a reintroduction reserve (landscape scale). Invertebrate burrows were more numerous in mammal pits than bare-ground and artificial pits, and larger in mammal pits than bare-ground. The density and si...
Source: Soil Biology and Biochemistry - February 7, 2019 Category: Biology Source Type: research

Understory ferns alter soil carbon chemistry and increase carbon storage during reforestation with native pine on previously degraded sites
Publication date: Available online 6 February 2019Source: Soil Biology and BiochemistryAuthor(s): Maokui Lyu, Jinsheng Xie, Christian P. Giardina, Matthew A. Vadeboncoeur, Xiaojuan Feng, Minhuang Wang, Liisa Ukonmaanaho, Teng-Chiu Lin, Yakov Kuzyakov, Yusheng YangAbstractReforestation with native species and resulting understory succession can exert important influences on soil organic matter (SOM) storage and chemistry, but a mechanistic understanding of these effects is lacking. We studied different aged Masson pine (Pinus massoniana L.) plantations with and without the understory fern, Dicranopteris dichotoma (Thunb.) B...
Source: Soil Biology and Biochemistry - February 7, 2019 Category: Biology Source Type: research

Sea animal activity controls CO2, CH4 and N2O emission hotspots on south Georgia, sub-Antarctica
This study aims to quantify magnitudes and environmental drivers of GHG fluxes effected by the activity of Antarctic fur seal (Arctocephalus gazella) and King penguin (Aptenodytes patagonicus) in South Georgia, sub-Antarctica. In-situ CO2 and CH4 gas flux measurements were combined with laboratory incubations of intact soil cores collected from sites along two transects away from a seal and a penguin colony. Variations in laboratory incubations were consistent with the in-situ fluxes measured in February 2017, and showed high ecosystem respiration rates at colonies (mean 44.3 μg CO2 cm−3 h−1 for seal colon...
Source: Soil Biology and Biochemistry - February 6, 2019 Category: Biology Source Type: research

Epi-anecic rather than strict-anecic earthworms enhance soil enzymatic activities
Publication date: Available online 4 February 2019Source: Soil Biology and BiochemistryAuthor(s): Kevin Hoeffner, Mathieu Santonja, Daniel Cluzeau, Cécile MonardAbstractEarthworms in interaction with soil microorganisms play a key role in litter decomposition. Moreover, as soil engineers, earthworms modify microbial communities and their enzymatic activities. Most studies focusing on earthworms and soil enzymatic activities compare distinct ecological categories of earthworms whereas their contributions and interactions within a given ecological category remain largely unknown. In this context, the aims of the prese...
Source: Soil Biology and Biochemistry - February 5, 2019 Category: Biology Source Type: research

Soil microbial communities with greater investment in resource acquisition have lower growth yield
Publication date: Available online 1 February 2019Source: Soil Biology and BiochemistryAuthor(s): Ashish A. Malik, Jeremy Puissant, Tim Goodall, Steven D. Allison, Robert I. GriffithsAbstractResource acquisition and growth yield are fundamental microbial traits that affect biogeochemical processes and have consequences for ecosystem functioning. However, there is a lack of empirical observations linking these traits. Using a landscape-scale survey of temperate near-neutral pH soils, we show tradeoffs in key community-level parameters linked to these traits. Increased investment into extracellular enzymes estimated using sp...
Source: Soil Biology and Biochemistry - February 2, 2019 Category: Biology Source Type: research

Drought-induced decline of productivity in the dominant grassland species Lolium perenne L. depends on soil type and prevailing climatic conditions
Publication date: Available online 1 February 2019Source: Soil Biology and BiochemistryAuthor(s): Alexandre Buttler, Pierre Mariotte, Marco Meisser, Thomas Guillaume, Constant Signarbieux, Amarante Vitra, Sara Preux, Géraldine Mercier, Juan Quezada, Luca Bragazza, Konstantin GavazovAbstractSevere constraints on grasslands productivity, ecosystem functions, goods and services are expected to result from projected warming and drought scenarios under climate change. Negative effects on vegetation can be mediated via soil fertility and water holding capacity, though specific mechanisms are fairly complex to generalise. ...
Source: Soil Biology and Biochemistry - February 2, 2019 Category: Biology Source Type: research

Effect of temperature on the microbial community responsible for methane production in alkaline NamCo wetland soil
Publication date: Available online 2 February 2019Source: Soil Biology and BiochemistryAuthor(s): Yongcui Deng, Pengfei Liu, Ralf ConradAbstractThe Tibetan plateau is a cold environment at high altitude and is very sensitive to global climate change. Wetlands on this plateau are among the major sources of the important greenhouse gas methane, and temperature is an important factor in controlling CH4 production. However, it remains unknown how CH4 production and microbial processes in such wetlands respond to climate warming. Therefore, we anaerobically incubated soil slurries at 10, 20, 30 and 45 °C for 100 days to i...
Source: Soil Biology and Biochemistry - February 2, 2019 Category: Biology Source Type: research

Community transcriptomics reveals drainage effects on paddy soil microbiome across all three domains of life
Publication date: Available online 30 January 2019Source: Soil Biology and BiochemistryAuthor(s): Rehab Z. Abdallah, Carl-Eric Wegner, Werner LiesackAbstractDrainage is an important mitigation strategy to reduce methane emission from rice paddies. Here, we investigated how drainage shapes structure and functioning of the paddy soil microbial community. Soil microcosms were pre-incubated for 28 days under flooded conditions followed by nine days' drainage. Upon sampling, metatranscriptome libraries were generated from flooded and drained soils. With drainage, oxygen concentration increased from suboxic (1.6 μmol/l) to ...
Source: Soil Biology and Biochemistry - January 30, 2019 Category: Biology Source Type: research

CH4 oxidation-dependent 15N2 fixation in rice roots in a low-nitrogen paddy field and in Methylosinus sp. strain 3S-1 isolated from the roots
Publication date: Available online 30 January 2019Source: Soil Biology and BiochemistryAuthor(s): Ryo Shinoda, Zhihua Bao, Kiwamu MinamisawaAbstractMethane (CH4) oxidation and nitrogen (N2) fixation are simultaneously activated in the roots of rice plants grown in paddy fields with low N input (LN). However, the mechanism of CH4 oxidation-dependent N2 fixation remains largely unknown. In the present study, a15N2-feeding experiment was adopted to evaluate methanotrophic N2 fixation in LN rice roots and in a methanotroph isolated from the rice roots. The presence of CH4 significantly enhanced 15N incorporation from 15N2 gas ...
Source: Soil Biology and Biochemistry - January 30, 2019 Category: Biology Source Type: research

The impact of dispersal, plant genotype and nematodes on arbuscular mycorrhizal fungal colonization
Publication date: Available online 29 January 2019Source: Soil Biology and BiochemistryAuthor(s): Pil U. Rasmussen, Anupol Chareesri, Roy Neilson, Alison E. Bennett, Ayco J.M. TackAbstractWhile the majority of parasitic and mutualistic microbes have the potential for long-range dispersal, the high turnover in community composition among nearby hosts has often been interpreted to reflect dispersal constraints. To resolve this apparent contradiction, we need further insights into the relative importance of dispersal limitation, host genotype and the biotic environment on the colonization process. We focused on the important ...
Source: Soil Biology and Biochemistry - January 29, 2019 Category: Biology Source Type: research

Can the comparison of above- and below-ground litter decomposition improve our understanding of bacterial and fungal successions?
Publication date: Available online 29 January 2019Source: Soil Biology and BiochemistryAuthor(s): Marie Sauvadet, Nicolas Fanin, Matthieu Chauvat, Isabelle BertrandAbstractThe relationship between litter quality and life strategy of soil microorganisms (copiotrophy vs oligotrophy) is important for understanding soil processes such as decomposition. Yet, whether and how this relationship may vary with the addition of substrates of contrasting quality (i.e., labile vs recalcitrant) has rarely been evaluated for both bacteria and fungi simultaneously. Using a 3-month incubation experiment with either maize leaves (enriched in...
Source: Soil Biology and Biochemistry - January 29, 2019 Category: Biology Source Type: research

Dam construction alters function and community composition of diazotrophs in riparian soils across an environmental gradient
This study suggests distinct activity, abundance, distribution pattern, and network structure of the diazotrophic populations in riparian soils between dam-affected and control sites; thus, providing a novel insight into the potential ecological effects of dam construction on nitrogen cycling.Graphical abstract (Source: Soil Biology and Biochemistry)
Source: Soil Biology and Biochemistry - January 29, 2019 Category: Biology Source Type: research

Spatio-temporal microbial community dynamics within soil aggregates
Publication date: Available online 29 January 2019Source: Soil Biology and BiochemistryAuthor(s): Racheal N. Upton, Elizabeth M. Bach, Kirsten S. HofmockelAbstractSoil microbial communities are highly spatially organized, shaped in part by the structure of soil itself. Understanding how spatially discrete microbial communities change across years and seasons in response to environmental factors, plant phenology and aggregate turnover, is key to understanding how varying management practices impact the ecology of soil microbial communities. We investigated both seasonal (within year) and annual (across sampling years) chang...
Source: Soil Biology and Biochemistry - January 29, 2019 Category: Biology Source Type: research

Biochemical pathways used by microorganisms to produce nitrous oxide emissions from soils fumigated with dimethyl disulfide or allyl isothiocyanate
Publication date: Available online 25 January 2019Source: Soil Biology and BiochemistryAuthor(s): Wensheng Fang, Dongdong Yan, Bin Huang, Zongjie Ren, Xianli Wang, Xiaoman Liu, Yuan Li, Canbin Ouyang, Quirico Migheli, Aocheng Cao, Qiuxia WangAbstractDespite using fumigants for many decades to control soil-borne pathogens and plant-parasitic nematodes, the influence of soil fumigation on microorganisms involved in the nitrogen-transforming process remains little understood. We used real-time PCR (quantitative polymerase chain reaction) and 16S rRNA gene amplicon sequencing techniques to determine nitrous oxide (N2O) emissio...
Source: Soil Biology and Biochemistry - January 26, 2019 Category: Biology Source Type: research

Microbial C:N:P stoichiometry and turnover depend on nutrients availability in soil: A 14C, 15N and 33P triple labelling study
This study examines the responses of Cmic, Nmic, Pmic, the microbial respiration rate (CO2 efflux), and the total DNA content to C and nutrient addition in forest soils with very low (Low-P) and high P (High-P) contents. Both the Low-P and High-P soils were treated with a low and high level of C, N and P (5% and 200% of Cmic, Nmic and Pmic). Phosphorus (33P) was added before the addition of C (14C) and N (15N) to investigate the potential P limitation. We hypothesized two modes of microbial biomass C and nutrient turnover: 1) maintenance through intracellular metabolisms and/or 2) microbial growth and death through necroma...
Source: Soil Biology and Biochemistry - January 24, 2019 Category: Biology Source Type: research

Pseudomonas protegens CHA0 does not increase phosphorus uptake from 33P labeled synthetic hydroxyapatite by wheat grown on calcareous soil
Publication date: Available online 22 January 2019Source: Soil Biology and BiochemistryAuthor(s): G. Meyer, M. Maurhofer, E. Frossard, H.A. Gamper, P. Mäder, É. Mészáros, L. Schönholzer-Mauclaire, S. Symanczik, A. ObersonAbstractSoil microorganisms exuding organic acids have the potential to solubilize inorganic phosphorus (P), which could improve the P availability to plants growing on calcareous soil. The gluconic acid exuding bacteria Pseudomonas protegens CHA0 can solubilize P under glucose rich in vitro conditions, but evidence on the effectiveness in soil is lacking. This discrepancy in...
Source: Soil Biology and Biochemistry - January 23, 2019 Category: Biology Source Type: research

Biological and mineralogical controls over cycling of low molecular weight organic compounds along a soil chronosequence
Publication date: Available online 18 January 2019Source: Soil Biology and BiochemistryAuthor(s): Jack W. McFarland, Mark P. Waldrop, Daniel Strawn, Courtney Creamer, Corey R. Lawrence, Monica HawAbstractLow molecular weight organic compounds (LMWOC) represent a small but critical component of soil organic matter (SOM) for microbial growth and metabolism. The fate of these compounds is largely under microbial control, yet outside the cell, intrinsic soil properties can also significantly influence their turnover and retention. Using a chronosequence representing 1200 ka of pedogenic development, we compared physicochemical...
Source: Soil Biology and Biochemistry - January 20, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: March 2019Source: Soil Biology and Biochemistry, Volume 130Author(s): (Source: Soil Biology and Biochemistry)
Source: Soil Biology and Biochemistry - January 20, 2019 Category: Biology Source Type: research

Reforestation accelerates soil organic carbon accumulation: Evidence from microbial biomarkers
Publication date: Available online 17 January 2019Source: Soil Biology and BiochemistryAuthor(s): Pengshuai Shao, Chao Liang, Laurel Lynch, Hongtu Xie, Xuelian BaoAbstractSoils store more carbon (C) belowground than plants and the atmosphere combined, providing a critical ecosystem service. While previous research has shown that sustainable forest management practices can increase soil C storage by enhancing plant productivity, the role of soil microbes remains elusive. We analyzed changes in plant litter, soil C, and microbial parameters across a reforestation chronosequence—with average stand ages of ∼20, 80, 1...
Source: Soil Biology and Biochemistry - January 18, 2019 Category: Biology Source Type: research

Enchytraeids simultaneously stimulate rice straw degradation and mitigate CO2 release in a paddy soil
Publication date: Available online 18 January 2019Source: Soil Biology and BiochemistryAuthor(s): Katharina John, Maksim Degtyarev, Anastasia Gorbunova, Daniil Korobushkin, Hannah Knöss, Volkmar Wolters, Andrey S. ZaitsevAbstractThe contribution of soil enchytraeids (potworms) to carbon cycling is often considered marginal and is therefore rarely quantified. In our experiment we aimed at evaluating the impact of the model enchytraeid species Enchytraeus buchholzi Vejdovsky, 1879 on rice straw degradation and associated CO2 release from soil. We filled 48 microcosms with soil collected in rice paddies of the Republic o...
Source: Soil Biology and Biochemistry - January 18, 2019 Category: Biology Source Type: research

Biological nitrogen fixation in peatlands: Comparison between acetylene reduction assay and 15N2 assimilation methods
In conclusion, ARA is not suitable as a proxy method for estimating and/or modelling BNF in peatlands. (Source: Soil Biology and Biochemistry)
Source: Soil Biology and Biochemistry - January 17, 2019 Category: Biology Source Type: research

Interactive priming of soil N transformations from combining biochar and urea inputs: A 15N isotope tracer study
In this study we investigated the priming effect of combined biochar and urea inputs on soil inorganic N pools through an isotope tracer approach. Biochar was applied in combination with urea in two complementary laboratory experiments: (i) in the first one, three 15N-labeled organic amendments (wheat straw (WS), its biochars produced at 350 °C (B350) and at 550 °C (B550) were added to soil in combination with unlabeled urea; (ii) in the second experiment the three same, but unlabeled, amendments were added to soil in combination with 15N labeled urea. This system allowed partitioning between three N sources: n...
Source: Soil Biology and Biochemistry - January 15, 2019 Category: Biology Source Type: research

Microbial growth and carbon use efficiency in soil: Links to fungal-bacterial dominance, SOC-quality and stoichiometry
In conclusion, a higher soil C-quality coincided with lower F:B and higher CUE across the surveyed sites, while a higher N availability did not. A higher N availability resulted in higher CUE and lower F:B within each site suggesting that site-specific differences such as the effect of plant community via e.g. plant litter and rhizosphere input, overrode the influence of N-availability. (Source: Soil Biology and Biochemistry)
Source: Soil Biology and Biochemistry - January 15, 2019 Category: Biology Source Type: research

Additive effects of experimental climate change and land use on faunal contribution to litter decomposition
Publication date: Available online 14 January 2019Source: Soil Biology and BiochemistryAuthor(s): Rui Yin, Nico Eisenhauer, Harald Auge, Witoon Purahong, Anja Schmidt, Martin SchädlerAbstractLitter decomposition is a key process determining the cycling of nutrients in ecosystems. Soil fauna plays an essential role in this process, e.g., by fragmenting and burrowing surface litter material, and thereby enhancing microbial decomposition. However, soil fauna-mediated decomposition might be influenced by interacting factors of environmental changes. Here we used a large-scale global change field experiment to test potenti...
Source: Soil Biology and Biochemistry - January 15, 2019 Category: Biology Source Type: research

Nitrosospira cluster 3-like bacterial ammonia oxidizers and Nitrospira-like nitrite oxidizers dominate nitrification activity in acidic terrace paddy soils
Publication date: Available online 14 January 2019Source: Soil Biology and BiochemistryAuthor(s): Qian Zhang, Yong Li, Yan He, Haiyang Liu, Marc G. Dumont, Philip C. Brookes, Jianming XuAbstractThe isolation of acid-adapted ammonia-oxidizing bacteria (AOB) has suggested the functional importance of AOB in acidic soils. However, there is, currently, no convincing evidence that links AOB activity to nitrification in acidic paddy soils. Here we demonstrated the incorporation of 13CO2 into the genomes of ammonia-oxidizing archaea (AOA), AOB and nitrite-oxidizing bacteria (NOB) following urea application by using stable isotope...
Source: Soil Biology and Biochemistry - January 15, 2019 Category: Biology Source Type: research

Pentachlorophenol alters the acetate-assimilating microbial community and redox cycling in anoxic soils
Publication date: Available online 12 January 2019Source: Soil Biology and BiochemistryAuthor(s): Yan Xu, Yan He, Eleonora Egidi, Ashley E. Franks, Caixian Tang, Jianming XuAbstractAcetate is a common electron donor that can drive microbial reductive processes in anaerobic environments. Apart from acting as a terminal electron acceptor, chlorinated organic pollutant of pentachlorophenol (PCP) has antimicrobial properties but little is known about its effect on anaerobic microbial populations during bioremediation. To elucidate the effect of PCP on the anaerobic microbial community, DNA-based stable isotope probing was perf...
Source: Soil Biology and Biochemistry - January 12, 2019 Category: Biology Source Type: research

Dissimilatory nitrate reduction to ammonium dominates nitrate reduction in long-term low nitrogen fertilized rice paddies
Publication date: Available online 12 January 2019Source: Soil Biology and BiochemistryAuthor(s): Arjun Pandey, Helen Suter, Ji-Zheng He, Hang-Wei Hu, Deli ChenAbstractDissimilatory nitrate reduction to ammonium (DNRA) and diazotrophic N2 fixation contribute to nitrogen (N) supply in rice paddies, whereas denitrification contributes to N loss. Continuous N fertilization in rice paddies is known to increase denitrification and reduce N2 fixation, however little is known about its effect on DNRA and the NO3− partitioning between DNRA and denitrification. Here, we investigated the rates of DNRA, denitrification and N2 f...
Source: Soil Biology and Biochemistry - January 12, 2019 Category: Biology Source Type: research

Warming suppresses microbial biomass but enhances N recycling
Publication date: Available online 7 January 2019Source: Soil Biology and BiochemistryAuthor(s): Wenlong Gao, Denghua YanAbstractTemperate grasslands are semi-arid ecosystems where plant growth and productivity are constrained not only by water, but also by nitrogen (N). However, rising temperatures may cause a progressive decrease in the availability of water and N to plants in temperate grasslands, negatively affecting long-term C fixation. To predict whether declining N availability would occur under a future warmer climate, we quantified the warming effects on major processes and pools of N in temperate grasslands via ...
Source: Soil Biology and Biochemistry - January 8, 2019 Category: Biology Source Type: research

Heterotrophic bacterial production measured on soil microaggregates sampled using a Biological Laser Printer
Publication date: Available online 8 January 2019Source: Soil Biology and BiochemistryAuthor(s): Michael T. Montgomery, Preston A. Fulmer, Joel D. Gaston, Russell K. Pirlo, Bradley R. RingeisenAbstractAlthough routinely measured in aquatic systems over the last 30 years, heterotrophic bacterial production (3H-leucine method) has only more recently been measured in terrestrial ecosystems to elucidate the role of soil biogeochemical processes in global carbon cycles and climate change. Studying bacterial metabolism at the microaggregate scale (100–300 μm) may unmask important microscale biogeochemical relationship...
Source: Soil Biology and Biochemistry - January 8, 2019 Category: Biology Source Type: research

Isotope pool dilution reveals rapid turnover of small quaternary ammonium compounds
Publication date: Available online 8 January 2019Source: Soil Biology and BiochemistryAuthor(s): Charles R. WarrenAbstractStudies of how nitrogen (N) becomes available have tended to focus on depolymerisation of proteins and subsequent uptake of amino acids, yet amino acids and their polymers are not the only organic N compounds in soil. For example, concentrations of small quaternary ammonium compounds in the extracellular fraction of soil are often comparable to those of amino acids. We know that there is rapid turnover of amino acids in the extracellular fraction of soil, but there are no comparable data for small quate...
Source: Soil Biology and Biochemistry - January 8, 2019 Category: Biology Source Type: research

Contrasting latitudinal diversity and co-occurrence patterns of soil fungi and plants in forest ecosystems
Publication date: Available online 7 January 2019Source: Soil Biology and BiochemistryAuthor(s): Yajun Hu, Stavros D. Veresoglou, Leho Tedersoo, Tianle Xu, Tida Ge, Lei Liu, Yongliang Chen, Zhipeng Hao, Yirong Su, Matthias C. Rillig, Baodong ChenAbstractThe diversity patterns of plants at large scale are broadly documented, but that of soil fungi remains elusive. Limited reports on soil fungal biogeography mainly are based on species richness. We carried out a large-scale field investigation on soil fungi originating from 365 forest plots covering five climate zones in China. We tested whether and to what degree a range of...
Source: Soil Biology and Biochemistry - January 7, 2019 Category: Biology Source Type: research

Rare taxa of alkaline phosphomonoesterase-harboring microorganisms mediate soil phosphorus mineralization
Publication date: April 2019Source: Soil Biology and Biochemistry, Volume 131Author(s): Xiaomeng Wei, Yajun Hu, Bahar S. Razavi, Juan Zhou, Jianlin Shen, Paolo Nannipieri, Jinshui Wu, Tida GeAbstractAs a homologous gene encoding microbial alkaline phosphomonoesterase, the expression of phoD is critically controlled by P availability and thus contributes to the mineralization of soil organic P under P-depleted condition. However, its role in the regulation of soil P turnover is largely unknown due to the complex coupling of physiochemical and biological processes in the P cycle, especially in paddy field. We hypothesized th...
Source: Soil Biology and Biochemistry - January 4, 2019 Category: Biology Source Type: research

Soil aluminum oxides determine biological nitrogen fixation and diazotrophic communities across major types of paddy soils in China
In this study, the field-based 15N2 labeling technique and nifH gene high-throughput sequencing were applied to four types of paddy soils collected from northeast to southwest China, representing major rice-growing areas. Results showed that the BNF amount had distinct geographical patterns and ranged from 2.2 ± 0.5 to 20.1 ± 3.7 kg N ha−1 during 42 days 15N2 labeling period, which was positively correlated with the abundance of Nostocales species. Among the soil properties analyzed, the contents of amorphous aluminum oxides may play a key role in determining the BNF amount and major N2-fixe...
Source: Soil Biology and Biochemistry - January 3, 2019 Category: Biology Source Type: research