European Journal of Soil Biology最新文献

{"title":"Trophic niche variation in springtails across soil depth","authors":"Jing-Zhong Lu ,&nbsp;Melissa Jüds ,&nbsp;Linlin Zhong ,&nbsp;Johannes Lux ,&nbsp;Stefan Scheu ,&nbsp;Amandine Erktan","doi":"10.1016/j.ejsobi.2025.103745","DOIUrl":"10.1016/j.ejsobi.2025.103745","url":null,"abstract":"<div><div>Soil invertebrates move vertically through the soil to forage and avoid environmental stress. However, how their diet shifts with depth remains poorly understood, limiting our understanding of their trophic plasticity. Trophic consistency across depths could result from similar trophic niches existing at the microscale within different soil layers (the micro-scale feeding hypothesis). To test this, we conducted a microcosm experiment incubating springtails (<em>Ceratophysella denticulata</em>) in six separate forest soil layers (O_L, and O_F/H, and 0–3, 3–6, 6–9 and 9–12 cm depth of the mineral soil) and analysed changes in Collembola stable isotope ratios (¹³C/¹²C, ¹⁵N/¹⁴N). As expected, ¹³C/¹²C and ¹⁵N/¹⁴N ratios in litter and soil organic matter increased with depth, whereas ¹³C/¹²C ratios of Collembola did not significantly differ across layers suggesting consistent basal resource use supporting the micro-scale feeding hypothesis. By contrast, ¹⁵N/¹⁴N ratios of Collembola increased with depth, following the trend of organic matter from O_L to 0–3 cm soil, but not beyond. These results suggest that carbon and nitrogen nutrition of springtails is decoupled, and that the use of litter to calibrate ¹⁵N/¹⁴N values for estimating trophic positions of soil animals requires careful interpretation. Our results highlight the importance of soil depth as determinant of trophic positions of soil animals and point to principle differences in nitrogen resource acquisition between litter and soil in soil animal decomposers. Overall, the vertical structure of soils and a microscale view of trophic interactions needs closer attention to better understand niche differentiation and resource acquisition of soil animals.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"126 ","pages":"Article 103745"},"PeriodicalIF":3.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Substitution of organic fertilizer did not change the dominant role of biochar on bacterial community stability but the soil carbon fractions","authors":"Husen Qiu ,&nbsp;Jieyun Liu ,&nbsp;Tida Ge","doi":"10.1016/j.ejsobi.2025.103744","DOIUrl":"10.1016/j.ejsobi.2025.103744","url":null,"abstract":"<div><div>Biochar and organic fertilizers are used to improve soil carbon retention. However, the interactive roles of biochar and organic fertilizer in stabilizing soil organic carbon (SOC) at different horizons remain unclear. A field experiment with biochar application (0 %, 1 %, and 2 % of dry soil; Control, LB, and HB, respectively) and organic fertilizer substitution (0 %, 20 %, 40 %, and 60 % of inorganic N; T0, T2, T4, and T6, respectively) (fermented sheep manure replacing urea-N)) was conducted to reveal the mechanisms. The SOC, particulate organic carbon (POC), and mineral-associated organic carbon (MAOC) contents increased with the biochar addition and organic fertilizer substitution. In the topsoil (0–15 cm), values ranged from 17 to 24 g kg⁻¹ (SOC), 2.03–6.6 g kg⁻¹ (POC), and 15–19 g kg⁻¹ (MAOC). In the subsoil (16–30 cm), the ranges were 16–20 g kg⁻¹ (SOC), 1.2–3.4 g kg⁻¹ (POC), and 14–18 g kg⁻¹ (MAOC). HB combined with organic fertilizer substitution promoted SOC, POC, and MAOC more effectively than biochar alone. The β-1,4-glucosidase and cellobiohydrolase (CBH) activities in the topsoil were 1.2–1.6 times higher than those in the subsoil. Increases in biochar reduced the POC/MAOC ratio by limiting CBH activity (P &lt; 0.05). Substituting organic fertilizer increased the POC/MAOC ratio by alleviating the limitation of biochar on bacterial biomass in the soil horizons. Bacterial community composition varied significantly with biochar addition and between soil horizons (P &lt; 0.05). Biochar enhanced the dominant role of heterogeneous selection and increased bacterial network complexity in both the topsoil and subsoil. Based on structural equation modeling, an increase in bacterial negative/positive cohesion significantly improved the proportion of MAOC in the topsoil (P &lt; 0.05). This study provides evidence that biochar (but not organic fertilizer substitution) helped improve C storage by decreasing the CBH activity and bacterial biomass, and enhancing network complexity. Thus, it is essential to consider soil horizons when evaluating the dynamic effects of agricultural practices on SOC pools.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"126 ","pages":"Article 103744"},"PeriodicalIF":3.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144239503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil pH modulates the impact of ammonia-based fertilizers on N-cycling microbial genes in terrestrial ecosystems","authors":"Xue Zhou,&nbsp;Yiyun Chen,&nbsp;Yawei Li","doi":"10.1016/j.ejsobi.2025.103735","DOIUrl":"10.1016/j.ejsobi.2025.103735","url":null,"abstract":"<div><div>The increase in available nitrogen (N) in terrestrial ecosystems influences N-cycling processes by affecting the abundance of N-cycling microorganisms. However, the responses of N-cycling genes to different N forms and soil pH conditions remain inconsistent. In this study, we conducted a meta-analysis to evaluate the responses of the abundances of functional genes (archaeal <em>amoA</em>, bacterial <em>amoA</em>, <em>narG</em>, <em>nirK</em>, <em>nirS</em>, and <em>nosZ</em>) involved in nitrification and denitrification to exogenous N inputs. Our analysis included 325 observations from 116 publications on terrestrial ecosystems. Elevated N inputs significantly increased the abundances of AOA (+24.6 %), AOB (+103 %), <em>nirS</em> (+31.2 %), <em>nirK</em> (+26.4 %), and <em>nosZ</em> (+24.0 %) genes. The effects of different N forms on N-cycling genes were modulated by soil pH. The response of AOB to N addition was significant across various N forms and a wide range of soil pH levels. In contrast, the strongest effects of inorganic N and urea on AOA were observed in alkaline and neutral soils, respectively, while organic fertilizers had the greatest impact on AOA in acidic soils. The response of the <em>nirS</em> gene to organic N addition was evident across a broad range of soil pH, whereas the <em>nirK</em> gene responded primarily in acidic and neutral soils. In neutral soils, inorganic N similarly influenced the abundances of <em>nirS</em> and <em>nirK</em> genes; however, in acidic soils, inorganic N significantly reduced <em>nirS</em> gene abundance while increasing that of <em>nirK</em>. Urea significantly enhanced the abundances of <em>nirS</em> and <em>nirK</em> genes in acidic and neutral soils, respectively. Moreover, organic and inorganic N markedly increased <em>nosZ</em> gene abundance in neutral and alkaline soils, whereas urea had no significant effect on <em>nosZ</em>. This meta-analysis provides a comprehensive understanding of the responses of N-cycling genes to various N forms across soils with differing pH levels, offering valuable insights to refine strategies for reducing greenhouse gas emissions and improving N management in terrestrial ecosystems.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103735"},"PeriodicalIF":3.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of black soldier fly larval frass addition on the winter wheat ecosystem: a mesocosm experiment","authors":"Anton A. Goncharov ,&nbsp;Alexander I. Bastrakov ,&nbsp;Olga L. Makarova ,&nbsp;Kirill A. Mashkov ,&nbsp;Valentina N. Maygurova ,&nbsp;Mikhail M. Karpukhin ,&nbsp;Maksim I. Kartashov ,&nbsp;Natalia A. Kuznetsova ,&nbsp;Ivan V. Sotnikov ,&nbsp;Ivan D. Tsvelev ,&nbsp;Azida K. Tkhakakhova ,&nbsp;Renat V. Khusainov ,&nbsp;Nina A. Ushakova","doi":"10.1016/j.ejsobi.2025.103734","DOIUrl":"10.1016/j.ejsobi.2025.103734","url":null,"abstract":"<div><div>Black Soldier Fly (<em>Hermetia illucens</em>) larval (BSFL) frass demonstrated a pronounced inhibitory effect <em>in vitro</em> on isolates of the soil-borne phytopathogenic fungus <em>Fusarium oxysporum</em>, the causal agent of Fusarium wilt. No studies have examined the influence of BSFL frass on Fusarium wilt in crops. To address this gap, we conducted a mesocosm experiment to assess the efficacy of BSFL frass (200 g m⁻²) added during two different stages of winter wheat seedling growth (simultaneously with sowing or at the tillering stage) on four parameters (study outcomes) that describe the development of Fusarium wilt: plant dry mass, Fusarium wilt incidence, number of <em>Fusarium</em> spp. gene copies in the soil, and biomass of <em>Fusarium</em> spp. in the soil. Soil chemical properties and abundance of key soil invertebrates (Nematoda, Acari and Collembola) were measured to describe mechanisms. <em>Fusarium</em> spp. biomass increased 132 % in the later BSFL frass addition treatment compared to the control (soil without BSFL frass amendment). Fusarium wilt incidence decreased non-significantly in both early (3 %) and later (8 %) addition treatments. Plant dry mass increased 27 % in the early addition treatment, while soil phosphorus concentration increased 21 % in the later addition treatment. Bacterial feeding and predatory nematodes increased 106 % and 65 %, respectively, in the later addition treatment. Mycophagous Acari increased 106 % in the early addition treatment, while predatory Acari showed five-fold growth in later addition treatments. The main mechanism of BSFL frass influence appears to be promoting saprotrophic mycobiota and increasing soluble phosphorus availability for plants.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103734"},"PeriodicalIF":3.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variations in rainfall reduce the contribution of soil fauna to litter decomposition in subtropical mixed forests","authors":"Jian Feng ,&nbsp;Yunxing Bai ,&nbsp;Yunchao Zhou ,&nbsp;Haiyang Guan ,&nbsp;Manyi Fan ,&nbsp;Yaoxiong Wang ,&nbsp;Fenghua Tang ,&nbsp;Yang Peng","doi":"10.1016/j.ejsobi.2025.103733","DOIUrl":"10.1016/j.ejsobi.2025.103733","url":null,"abstract":"<div><div>The impacts of global climate change on terrestrial ecosystems are becoming increasingly obvious, particularly changes in rainfall patterns, which directly affect nutrient cycling in forest detrital-based food webs. However, how soil fauna affects litter decomposition and nutrient release under changing rainfall patterns remains to be further studied. We set up litterbag experiments in pure stands of <em>Pinus massoniana</em> (PM) and in mixed forests (PM + <em>Bretschneidera sinensis</em>, PM + <em>Cercidiphyllum japonicum</em>, PM + <em>Taxus wallichiana</em>, and PM + <em>Nageia nagi</em>) in subtropical China to determine how changes in rainfall, such as a 30 % increase or decrease and natural rainfall, affect litter decomposition by soil fauna. Our results indicated that although the effects of increased (promoting effect) and decreased rainfall (inhibiting effect) on the abundance and diversity of soil fauna in mixed litter varied, precipitation changes significantly reduce the contribution of soil fauna to litter decomposition. Compared to natural rainfall quantities, the increase and decrease in rainfall prolonged the time required for 95 % decomposition of litter by 9.93–37.24 % and 32.38–77.07 %, respectively. Soil fauna mitigated the inhibitory effect of reduced rainfall on carbon release from mixed litter, whereas in the case of increased rainfall, the enhanced release of nutrients such as carbon, phosphorus, and potassium from the litter is not attributed to soil fauna. Moreover, the effect of soil fauna on decomposition rates was more obvious in single litter, but rainfall variability had a greater impact on mixed litter. Rainfall changes were an indirect driver of litter decomposition rates, mediating soil fauna and nutrient release. This study demonstrates that litter decomposition is inhibited by changes in rainfall, which also reduces the contribution of soil fauna to litter decomposition. This adds new perspectives and insights for future research on material cycling and decomposer diversity protection in forest systems under climate change.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103733"},"PeriodicalIF":3.7,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ant community composition defines nest mound dynamics across successional stages in desert restoration","authors":"Lei Zhou ,&nbsp;Rentao Liu ,&nbsp;Marcelo Sternberg ,&nbsp;Hui An ,&nbsp;Jiancai Sun ,&nbsp;Feiyue Zeng","doi":"10.1016/j.ejsobi.2025.103731","DOIUrl":"10.1016/j.ejsobi.2025.103731","url":null,"abstract":"<div><div>Ants play critical roles as ecosystem engineers in desert environments. This study investigates how ant community composition and diversity influence mound morphology and spatial distribution across a succession of revegetated areas in the Tengger Desert, China. We examined four stages of revegetation—5 years (5a), 8 years (8a), 34 years (34a), and 57 years (57a)—representing different stages in the successional process. Using a combination of sampling techniques, we found that ant abundance peaked in intermediate stages (8 years), while α and β diversity increased linearly with succession. Mound density and size decreased significantly after 34 years, and spatial distribution shifted from aggregated patterns in early and intermediate stages to a uniform distribution in the later stage (57 years). Notably, β diversity and the abundance of the dominant species, <em>Formica cunicularia</em>, were key drivers of these changes. This study highlights the importance of β diversity in influencing ecosystem engineering processes during long-term successional stages. These findings provide a theoretical basis for future restoration strategies that integrate ant community dynamics in desertified ecosystems.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103731"},"PeriodicalIF":3.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The making of a (soil) star: phylogenetic relationships of the genus Lumbricus with insight into its evolution and biogeography","authors":"Daniel F. Marchán ,&nbsp;Alejandro Martínez Navarro ,&nbsp;Manuel Aira ,&nbsp;Thibaud Decaëns ,&nbsp;Sylvain Gérard ,&nbsp;Jorge Domínguez","doi":"10.1016/j.ejsobi.2025.103732","DOIUrl":"10.1016/j.ejsobi.2025.103732","url":null,"abstract":"<div><div>The widely distributed earthworm genus <em>Lumbricus</em> exhibits significant ecological and morphological diversity, playing essential roles in soil ecosystems. This study presents a comprehensive molecular phylogeny of the genus, incorporating eighteen taxa and four mitochondrial and anuclear marker. The aim was to clarify the phylogenetic relationships within <em>Lumbricus</em> and examine the evolutionary trajectory of bioturbation behaviour and geographic origins.</div><div>Phylogenetic analyses revealed three major clades within <em>Lumbricus</em>, with <em>Lumbricus baicalensis</em> emerging as the earliest branching species. Evolutionary relationships suggested that the common ancestor of the genus was an epigeic litter dweller, with epi-anecic traits appearing later in their evolutionary history. Ancestral area reconstruction indicated that the genus originated in France and Central Europe, aligning with previous hypotheses of an Alpine origin. Molecular phylogenetics reinforced the monophyly of the genus, confirming the species status of previously unassessed taxa, such as <em>Lumbricus meliboeus</em> and <em>Lumbricus polyphemus</em>. Additionally, high genetic divergence was found between some infraspecific taxa, suggesting that <em>Lumbricus castaneus</em> var. <em>disjunctus</em> and <em>Lumbricus rubellus castaneoides</em> may represent pseudocryptic species. Previous hypotheses about the giant endemic species <em>Lumbricus badensis</em> evolving from a common ancestor with <em>Lumbricus friendi</em> around the Last Glacial Maximum were not supported by our results.</div><div>These findings contributed an evolutionary and biogeographic background to understand the current ecology and distribution of invasive <em>Lumbricus</em> species such as <em>Lumbricus terrestris</em> or <em>Lumbricus castaneus</em>, potentially opening the way to improved management of these impactful species.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103732"},"PeriodicalIF":3.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influences of iron plaque on nitrogen emissions from paddy soils under different water management practices","authors":"Ting Liu ,&nbsp;Mengting Liu ,&nbsp;Zixian Zhang ,&nbsp;Jinzhi Yao ,&nbsp;Shuping Qin ,&nbsp;Rongzhong Guo ,&nbsp;Xiao Xiao","doi":"10.1016/j.ejsobi.2025.103730","DOIUrl":"10.1016/j.ejsobi.2025.103730","url":null,"abstract":"<div><div>Iron plaque (IP), commonly found on rice roots, influences nitrogen emissions, particularly nitrous oxide (N₂O) and dinitrogen (N₂) gases, under different water management practices. However, the mechanisms underlying this influence remain unclear. In this study, the cylinder-in-cylinder method was employed to determine nitrogen emissions from rice soils under alternate wetting and drying or continuous flooding conditions in a laboratory pot experiment. The effects of iron plaque on N₂O and N₂ emissions were investigated. It was found that iron plaque increased N₂O and N₂ emissions, particularly under continuous flooding conditions. The abundance of <em>nosZ</em> gene was positively related to N₂ emission, and the relationship was significant under continuous flooding condition (<em>p ≤ 0.05</em>). The presence of iron plaque increased the richness of <em>nirS-</em> and <em>nosZ</em>-type denitrifiers (<em>p ≤ 0.001</em>) and led to alteration in denitrifier community composition. Specifically, the relative abundance of <em>Pseudomonas</em> was increased (<em>p ≤ 0.001</em>), which probably influenced N₂O and N₂ emissions. These findings help to better understand the effects of iron plaque on N emissions from agricultural ecosystems.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103730"},"PeriodicalIF":3.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drought and litter quality effects on the contribution of soil fauna to decomposition in a Mediterranean forest","authors":"Francisco L. Villazón-Orozco ,&nbsp;Miquel Ferrín ,&nbsp;Laura Márquez ,&nbsp;Jordi Sardans ,&nbsp;Romà Ogaya ,&nbsp;Josep Peñuelas ,&nbsp;Guille Peguero","doi":"10.1016/j.ejsobi.2025.103729","DOIUrl":"10.1016/j.ejsobi.2025.103729","url":null,"abstract":"<div><div>Soil animals accelerate leaf litter decomposition and nutrient mobilization; however, the combined effects of drought and litter quality on their contributions to these key ecosystem processes remain underexplored. We investigated the effects of experimental drought and litter quality on soil fauna communities’ contributions to leaf litter decomposition in a Mediterranean forest. Leaf litter from <em>Quercus ilex</em> and <em>Phillyrea latifolia</em>, was incubated for one year in litterbags with varying mesh sizes across eight 150-m² plots; half received long-term drought treatment. We measured litter biomass loss in each litterbag, leaf litterfall, nitrogen concentrations in leaves and litter, photosynthetically active radiation at each plot. Soil mesofauna were sampled three times during litterbag incubation. Our results showed that litter mass loss was greater for <em>P. latifolia</em> under experimental drought, while no significant differences were found in controlled conditions. Soil animals generally preferred <em>P. latifolia</em> over <em>Q. ilex</em> in both treatments, although overall contribution to litter decomposition was slightly lower under drought. Light extinction rate was lower in drought plots with reduced canopy height, indicating potential degradation of lignin and cellulose by solar radiation. Litter of <em>P. latifolia</em> contained higher nitrogen concentrations than <em>Q. ilex</em>, attributed to its lower resorption efficiency, possibly explaining its preference by soil fauna detritivores. Drought significantly impacted soil mesofauna abundance, reducing their density by 37.9 %. Our research indicates that direct impacts of drought on soil fauna communities might constrain their ability to facilitate litter decomposition, hindering their capacity to counteract nutrient cycling slowdown in Mediterranean ecosystems amid ongoing climate change.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103729"},"PeriodicalIF":3.7,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulation of soil microorganisms and phosphorus cycling genes on soil phosphorus availability in desert steppe under warming and phosphorus input","authors":"Lingxia Feng ,&nbsp;Bing Cao","doi":"10.1016/j.ejsobi.2025.103728","DOIUrl":"10.1016/j.ejsobi.2025.103728","url":null,"abstract":"<div><div>Climate warming can directly or indirectly influence soil phosphorus (P) availability. Soil microorganisms are essential driving forces of P cycling. However, how the soil microbes and P cycling genes respond to variations in soil P availability on climate warming in the P-limited desert steppe is unclear. In this study, we conducted a field experiment using two temperature levels (control, warming) and three P fertilizer addition rates (0, 5, 10 g P m⁻²·yr⁻¹) in the desert steppe. Microbiological and metagenomic analyses were used to explore the shifts in the relative abundance and compositions of soil microbial and P cycling genes in response to warming and P inputs. The results demonstrated that warming decreased soil labile P (7.04 %) by reducing the percentages of resin-P, NaHCO₃-Pi, and HCl-Pi in inorganic P (Pi). P inputs significantly increased soil TP, MBP, Pi, and inorganic P fractions contents, and further enhanced soil labile P (1.27–3.55 times), moderately labile P (7.04–17.59 %), and stable P (4.23-10.47 %). The interaction of warming and P addition increased NaHCO₃-Pi, the percentages of NaHCO₃-Pi in Pi, and improved soil labile P (1.68–2.05 times) and stable P (5.38–10.38 %). Soil P availability was mainly regulated by TP and MBP, which were positively correlated with the organic P mineralization gene (<em>phnW</em>). Our findings indicated that soil bacteria and fungi did not alter in response to changes in P availability under warming and P input. The <em>phnW</em> gene played an essential role in regulating soil P availability in the desert steppe.</div></div>","PeriodicalId":12057,"journal":{"name":"European Journal of Soil Biology","volume":"125 ","pages":"Article 103728"},"PeriodicalIF":3.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}