Soil Biology & Biochemistry最新文献

{"title":"Whole soil warming promotes surface soil carbon loss but deep soil carbon gain, depending on land management practices in temperate climate","authors":"Md. Zulfikar Khan ,&nbsp;Abad Chabbi ,&nbsp;Axel Felbacq ,&nbsp;Gabin Piton ,&nbsp;Isabelle Bertrand ,&nbsp;Pierre-Alain Maron ,&nbsp;Cornelia Rumpel","doi":"10.1016/j.soilbio.2025.109832","DOIUrl":"10.1016/j.soilbio.2025.109832","url":null,"abstract":"<div><div>The impact of management practices on the response of biogeochemical cycles to soil warming remains poorly understood. This study aimed to investigate (1) the effects of warming on soil organic carbon (SOC) and nitrogen (N) storage across soil profiles in cropland and grassland and (2) the microbial metabolism involved in these processes. To achieve these objectives, we conducted an <em>in-situ</em> soil warming experiment (+4°C) down to 1.0-m depth in an agricultural Cambisol in Lusignan, France. We analyzed soil microbial community composition using ester-linked fatty acid methyl ester (EL-FAME) profiling and measured extracellular enzyme activities related to SOC and nutrient cycling under both land management practices.</div><div>Our results indicated that three years of soil warming had no effect on SOC and N stocks in grassland soils across the profile. In contrast, cropland surface soils (0-15 cm) showed an 18.1% and 15.0% decrease in SOC and N stocks, respectively, while deeper layers (70–90 cm) exhibited an 86.7% and 68.8% increase. These shifts in SOC and N stocks corresponded with changes in extracellular enzyme activities (C- and N-acquisition), eco-enzymatic stoichiometry, and bacterial community composition. Additionally, warming led to a slight decrease in aboveground biomass production in cropland. Furthermore, microbial biomass and community composition in surface soil exhibited management-specific responses to warming. Overall, our findings suggest that the effect of warming on SOC and N stocks depends on both soil depth and land management. Consequently, agricultural management practices could regulate SOC responses to warming by altering carbon inputs into the soil system, with implications for microbial community composition and activity.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109832"},"PeriodicalIF":9.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Marcescence in temperate regions mediates tree litter decomposition through abiotic factors","authors":"Šárka Angst ,&nbsp;Ondřej Mudrák ,&nbsp;Martin Bartuška ,&nbsp;Kateřina Čápová ,&nbsp;Veronika Jílková ,&nbsp;Petr Petřík ,&nbsp;Gerrit Angst","doi":"10.1016/j.soilbio.2025.109820","DOIUrl":"10.1016/j.soilbio.2025.109820","url":null,"abstract":"<div><div>Most temperate trees shed their senescent leaves in autumn. However, some genera, typically beech and oak, retain a large portion of their dead leaves until the start of the subsequent growing season, a phenomenon termed marcescence. The fundamentally different conditions marcescent and shed senescent leaves are exposed to have the potential to substantially alter litter decomposition. The extent to which marcescence affects decomposition in temperate ecosystems, however, remains unknown, which hampers our understanding of carbon and nutrient cycles. Here, we aimed to resolve this dilemma in a manipulative field experiment by quantifying the effect of solar radiation and precipitation, the major factors marcescent leaves are exposed to in temperate ecosystems, on the decomposition of marcescent leaves relative to that of leaves directly decomposing in the organic layer after their senescence.</div><div>Exposure of leaves from the genera <em>Quercus</em> and <em>Fagus</em> to solar radiation before decomposition in the organic layer resulted in a considerably higher mass loss for those leaves than for leaves decomposing directly in the organic layer (37 vs. 23 %). This effect was further amplified upon exposure of leaves to both solar radiation <em>and</em> precipitation (cumulative mass loss of ∼50 % or more). Leaf chemistry analyses via Fourier-transform infrared spectroscopy suggested that disruption of ligno-cellulose complexes and leaching of the released compounds in the solar radiation only and solar radiation <em>and</em> precipitation treatments, respectively, accelerated leaf decomposition. We identify marcescence as an integral driver of litter decomposition and highlight the need to consider marcescence in carbon and nutrient cycling in temperate ecosystems.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109820"},"PeriodicalIF":9.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response of soil biota to agricultural management practices: A systematic quantitative meta-data-analysis and method selection framework","authors":"Martina Lori ,&nbsp;Ricardo Leitao ,&nbsp;David Felix ,&nbsp;Camille Imbert ,&nbsp;Alessio Corti ,&nbsp;Luis Cunha ,&nbsp;Sarah Symanczik ,&nbsp;Else Bünemann ,&nbsp;Rachel Creamer ,&nbsp;Carmen Vazquez","doi":"10.1016/j.soilbio.2025.109815","DOIUrl":"10.1016/j.soilbio.2025.109815","url":null,"abstract":"<div><div>Soil organisms are vital to soil health, however, their inclusion in monitoring frameworks remains limited. Yet, it is well-known that agricultural management practices distinctively affect soil biota and the functions that they support. In this paper, we systematically evaluated the impact of management practices related to carbon and nutrient, vegetation, pest and disease and soil management, as well as grazing management on soil biota. Using a meta-data analysis approach, we systematically reviewed meta-analyses to quantify management practice(s) effects on soil biological actors, including macrofauna, mesofauna, microfauna, and the microbiome. We identified and screened 698 articles, of which 90 meta-analyses remained eligible after quality control and redundancy analysis, giving rise to a total of 790 pairwise combinations supported by 74′526 observations. In this paper, we demonstrate how specific management practices impact specific soil biota, which in turn may also influence soil processes and functions that these soil biota support. We reveal key knowledge gaps, particularly concerning the soil meso- and macrofauna, but also soil protists. Our study demonstrates which agricultural practices may support or diminish soil biology, providing much needed guidance on the selection of sustainable farming approaches, such as reduced tillage, organic fertilization, cover cropping, and intercropping. Lastly, we introduce a “Utility-Robustness” scoring system for soil actors, using a systematic framework to inform biological indicator selection tailored to specific management contexts. This fully transparent approach is designed to remain adaptable and expandable in the coming years, as new data and insights emerge.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109815"},"PeriodicalIF":9.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143841751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rewetting alongside biochar and sulphate addition mitigates greenhouse gas emissions and retain carbon in degraded upland peatlands","authors":"Peduruhewa H. Jeewani ,&nbsp;Robert W. Brown ,&nbsp;Chris D. Evans ,&nbsp;Jack Cook ,&nbsp;Benjamin P. Roberts ,&nbsp;Mariecia D. Fraser ,&nbsp;David R. Chadwick ,&nbsp;Davey L. Jones","doi":"10.1016/j.soilbio.2025.109814","DOIUrl":"10.1016/j.soilbio.2025.109814","url":null,"abstract":"<div><div>Peat soils store significant amounts of carbon (C) globally, and increased C sequestration into peatlands could play a role in offsetting anthropogenic greenhouse gas (GHG) emissions. As such, there is a need to find and assess optimal greenhouse gas removal (GGR) interventions to minimise GHG losses, protect current C stocks, and promote further C sequestration. This mesocosm study assessed the additional C storage potential of different <em>C</em>-rich substrates (<em>Juncus</em> straw or <em>Juncus</em>-derived biochar) and/or FeSO₄ amendments, with a low water table (LW; −15 cm) and high-water table (HW; 0 cm) in intact soil columns (20 cm diam. x 25 cm deep) extracted from degraded upland peat. GHG fluxes, soluble nutrients, changes in microbial community structure and enzyme activity were measured over a one-year period to evaluate the net C storage and their overall GGR potential. HW reduced CO₂ emissions by 28 % compared to LW, while CH₄ emissions increased, ultimately contributing 61 % of the overall CO₂ equivalent (CO₂eq) GHG emissions in HW cores with no amendments. Organic amendments had a significant effect on CO₂ and CH₄ emissions with the highest cumulative emissions being from the Straw-HW (26.2 t CO₂eq ha⁻¹ yr⁻¹) and the lowest cumulative emissions being from the Biochar + FeSO₄+HW (7.9 t CO₂eq ha⁻¹ yr⁻¹). Biochar + FeSO₄+HW led to the strongest net gain in soil C, suppressing decomposition of the native peat-C as well as CH₄ emissions. The application of FeSO₄ significantly reduced CO₂eq GHG emissions by preventing methanogenesis through alternative electron acceptors. The Biochar + HW treatment suppressed Ascomycota abundance by 22 %. The combination of a high-water level, biochar addition and availability of alternative electron acceptors (e.g., FeSO₄) can increase net C accumulation and GGR via both abiotic and biotic mechanisms, including i) increased C input, ii) modulation of soil microbiome to reduce peat turnover; and iii) suppression of CH₄ and N₂O emissions.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109814"},"PeriodicalIF":9.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 and precipitation controls on organic carbon retention from organic amendments across soil orders: A meta-analysis","authors":"Bin Wu ,&nbsp;Tongshuo Bai ,&nbsp;Wenjuan Yu ,&nbsp;Tongbin Zhu ,&nbsp;Daming Li ,&nbsp;Chenglong Ye ,&nbsp;Manqiang Liu ,&nbsp;Shuijin Hu","doi":"10.1016/j.soilbio.2025.109819","DOIUrl":"10.1016/j.soilbio.2025.109819","url":null,"abstract":"<div><div>One central goal of global change research is to explore the potential to mitigate rising atmospheric CO₂ by promoting carbon (C) sequestration in terrestrial ecosystems, particularly in low-C agricultural soils in tropical and subtropical regions. Existing evidence suggests that the application of organic amendments is not effective in promoting accrual of soil organic carbon (SOC) in weathered tropical soils like Acrisols, but the specific causes that constrain SOC sequestration are not exactly clear. Here, we synthesized data from 224 publications to assess changes in SOC stocks in response to organic amendments across Acrisols and five other soil orders (Anthrosols, Cambisols, Fluvisols, Luvisols, and Phaeozems). We found that Acrisols, characterized by the lowest soil pH, exhibited the lowest C retention efficiency of organic amendments among the six soil orders, whereas no significant differences were observed among the other five soil orders. Initial soil pH and mean annual precipitation (MAP) were key predictors of SOC retention efficiency, which increased with initial soil pH and decreased with MAP. In addition, low soil pH and high MAP also suppressed microbial growth in response to organic amendments, limiting the retention of mineral-associated organic C (MAOC), which was strongly linked to SOC retention efficiency. Together, these findings suggest that limited SOC accumulation in Acrisols likely results from rapid decomposition and inefficient microbial transformation under acidic and humid conditions. Developing viable practices to improve SOC retention in weathered tropical soils with high acidity should focus on both enhancing the microbial pathway of SOC formation (e.g., through liming) and reducing C decomposition (e.g., through reduced tillage or deep residue incorporation).</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109819"},"PeriodicalIF":9.8,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implications of reduced root-soil contact for microbial rhizosphere establishment and early plant growth performance","authors":"Anna S. Wendel ,&nbsp;Sara L. Bauke ,&nbsp;Janadi Chamika Ileperuma ,&nbsp;Karolin Funken ,&nbsp;Katharina Frindte ,&nbsp;Claudia Knief","doi":"10.1016/j.soilbio.2025.109816","DOIUrl":"10.1016/j.soilbio.2025.109816","url":null,"abstract":"<div><div>Processes at the root-soil interface are essential for plant nutrient and water uptake, but the level of root-soil contact varies depending on root traits and soil properties. Implications of reduced root-soil contact for the rhizosphere, its microbiota and for plant performance remain largely unclear. Here, the consequences of root-soil contact reduction were analyzed in maize microcosm experiments. Either soil porosity was modified by introducing artificial large-sized pores, or the contact area was reduced by a maize mutant (<em>rth3</em>) impaired in root hair development. Microscopic evaluation of roots grown in pores without soil contact revealed strongly reduced prokaryotic surface colonization. Bacterial abundance in the rhizosphere soil of remaining contact areas was also reduced (2.2 × 10¹⁰ vs. 1.0 × 10⁹ 16S rRNA gene copies per g dry soil), including the abundance of nitrogen cycling bacteria. The absence of root hairs decreased bacterial abundance likewise, though not of nitrogen cycling prokaryotes. 16S rRNA gene-based amplicon sequencing revealed bacterial community-compositional alterations in the rhizosphere (PERMANOVA R² = 0.701, <em>p</em> = 0.001) with lower relative abundances of <em>Massilia</em> and <em>Paenibacillus</em> for roots grown in pores. Community shifts in the rhizosphere of <em>rth3</em> plants showed similar changes. No differences were evident upon root-soil contact reduction in the endosphere bacterial community. Combined manipulations revealed that root hairs improved root-soil contact in pores, whereas lateral roots reduced it, as validated with a maize mutant (<em>lrt1</em>) impaired in lateral root development. Plant growth and biomass allocation in the first three weeks were only weakly affected by root-soil contact reduction. Overall, the level of root-soil contact appears critical for bacterial life in the rhizosphere and rhizoplane, including the establishment of nitrifying bacteria and potential plant-beneficial taxa such as <em>Massilia</em>. Aiming at optimum root-soil contact by soil management and plant breeding strategies has thus the potential to contribute to the establishment of a functional rhizosphere microbiome.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109816"},"PeriodicalIF":9.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mycorrhizal hyphae, but not fine roots modulate drought effects on soil organic matter accumulation in a temperate forest","authors":"Xiang Li ,&nbsp;Junwei Luan ,&nbsp;Siyu Li ,&nbsp;Pengsen Sun ,&nbsp;Jinglei Zhang ,&nbsp;Yi Wang ,&nbsp;Shalom D. Addo-Danso ,&nbsp;Shaowen Mei ,&nbsp;Baoliang Niu ,&nbsp;Shirong Liu","doi":"10.1016/j.soilbio.2025.109818","DOIUrl":"10.1016/j.soilbio.2025.109818","url":null,"abstract":"<div><div>Extreme climatic events, such as drought, are projected to alter soil carbon (C) and nitrogen (N) cycling in forest ecosystems. However, how the effects of drought are modulated by tree roots and their associated mycorrhizal fungi remains poorly understood. Over 144 days of in-situ incubation, using mesocosms with different mesh sizes in an oak forest subjected to six consecutive years of throughfall rain reduction treatment, we distinguished the drought effects on soil organic C and N accumulations via root-pathway and mycorrhizal hypha-pathway. These effects were assessed within different stability fractions of soil organic matter, i.e., particulate organic matter (POM) and mineral-associated organic matter (MAOM). Drought led to greater accumulations of soil organic C and N via the hypha-pathway compared to the root-pathway. This outcome arose because the hypha-pathway drove greater accumulation in POM than losses in MAOM due to reduced decomposition rates, whereas the root-pathway led to greater POM losses relative to MAOM accumulation, primarily attributable to an enhanced root priming effect. Moreover, plants utilized more soil inorganic N relative to organic N through the hypha-pathway in response to drought, which may partly account for the inconsistent changes in C and N within different labile fractions. These findings emphasize the importance of distinguishing divergent roles of roots and mycorrhizal hyphae in modulating soil C and N processes in the context of future climate change scenarios.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"206 ","pages":"Article 109818"},"PeriodicalIF":9.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arbuscular mycorrhizal fungi hyphal density rather than diversity stimulates microbial necromass accumulation after long-term Robinia pseudoacacia plantations","authors":"Chunhui Liu ,&nbsp;Baorong Wang ,&nbsp;Jiaqi Liu ,&nbsp;Chenming Guo ,&nbsp;Huijun Li ,&nbsp;Haolin Zhang ,&nbsp;Yang Hu ,&nbsp;Deng Ao ,&nbsp;Zhijing Xue ,&nbsp;Shaoshan An ,&nbsp;Zhaolong Zhu","doi":"10.1016/j.soilbio.2025.109817","DOIUrl":"10.1016/j.soilbio.2025.109817","url":null,"abstract":"<div><div><em>Robinia pseudoacacia</em> plantations are an effective strategy for preventing soil erosion, enhancing soil fertility, and stimulating carbon (C) sequestration in barren systems, supported by symbioses with arbuscular mycorrhizal (AM) fungi and rhizobia. However, the effects of AM fungal diversity and hyphal density on microbial necromass and SOC accumulation after long-term <em>Robinia pseudoacacia</em> plantations remain unclear. We hypothesize that increased AM fungal diversity and hyphal density after afforestation stimulate SOC formation by facilitating fungal and bacterial necromass C (FNC and BNC), glomalin (GRSP), and extracellular polymeric substances (EPS), with the contributions increasing as forest age. To test this hypothesis, microbial necromass, SOC, AM fungal diversity, and hyphal density were measured in surface soil (0–20 cm) and subsurface soil (20–40 cm) of <em>Robinia pseudoacacia</em> plantations aged 10, 15, 20, 35, and &gt;50 years. Results showed that SOC accumulation was largely confined to surface soil, predominantly as mineral-associated organic C (MAOC). The content of FNC, GRSP, and EPS-polysaccharide in surface soil also increased with stand age, which is closely associated with MAOC. This emphasizes that long-term <em>Robinia pseudoacacia</em> plantations primarily stimulate C accumulation in surface soil, likely due to GRSP and EPS-polysaccharide aiding in the aggregation and protection of microbial necromass C. Although the AM fungal diversity in surface soil decreased with stand age, the hyphal density increased alongside root biomass. The increase in hyphal density could facilitate FNC and EPS formation, thereby contributing to the MAOC and SOC accumulation. In contrast, the content of SOC and microbial necromass C in subsurface soil showed an absence of differences or was reduced. Overall, this study reveals that microbial necromass and SOC accumulation after <em>Robinia pseudoacacia</em> plantations occur in surface soil, with AM fungal hyphal density and associated exudates, rather than AM fungal diversity, serving as key predictors.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"206 ","pages":"Article 109817"},"PeriodicalIF":9.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cry for help from rhizosphere microbiomes and self-rescue strategies cooperatively alleviate drought stress in spring wheat","authors":"Jing Fang ,&nbsp;Jie Ma ,&nbsp;Tao Wen ,&nbsp;Guoqing Niu ,&nbsp;Shuli Wei ,&nbsp;Shaofeng Su ,&nbsp;Liuxi Yi ,&nbsp;Yuchen Cheng ,&nbsp;Jun Yuan ,&nbsp;Xiaoqing Zhao ,&nbsp;Zhanyuan Lu","doi":"10.1016/j.soilbio.2025.109813","DOIUrl":"10.1016/j.soilbio.2025.109813","url":null,"abstract":"<div><div>In response to drought, plants modulate their morphology and orchestrate a range of functional adaptations. However, the intricate relationships between plants and their microbiome in response to drought stress are not fully understood. Herein, we used transcriptome and untargeted metabolomics technologies to study genetic and metabolic changes associated with drought resistance in spring wheat, as well as amplicon sequencing and metagenomic approaches were employed to investigate the influence of rhizosphere microorganisms on this process. Results indicated that plant functions of osmotic adjustment, oxidative stress, and stomatal regulation were enriched during drought conditions. Meanwhile, the relative abundances of trehalose, sucrose, gentiobiose, and abscisic acid in root exudates increased by 18.7 %, 21.1 %, 4.8 %, and 121.0 %, respectively. Cross-domain network construction with four omics data revealed that a significant increase in abundance of the trehalose biosynthetic pathway and sugar transporter <em>SWEET</em> gene promoted sucrose and trehalose secretion, respectively, leading to an enrichment of <em>Pseudomonas</em> and <em>Streptomyces</em> in the subsequent validation assay. <em>Pseudomonas extremorientalis</em> LS-8 and <em>Streptomyces cinereoruber</em> LW-5 were isolated to reveal that both strains could improve drought resistance by increasing the average aboveground fresh weight by more than 33.0 % and upregulating the expression of <em>TaLEA2</em>, <em>TaBADHb</em>, <em>TaWRKY10</em>, and <em>TaERF3</em> in spring wheat. Taken together, our study reveals novel drought resistance insights of spring wheat by the collaboration of self-rescue and cry for help from rhizosphere strategy, providing new opportunities to enhance drought resilience of spring wheat.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"206 ","pages":"Article 109813"},"PeriodicalIF":9.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143789816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Let's get functional: Relationship between earthworm traits and physicochemical cast properties","authors":"Yacouba Zi ,&nbsp;Nicolas Bottinelli ,&nbsp;Malalatiana Razafindrakoto ,&nbsp;Yvan Capowiez ,&nbsp;Alessandro Florio ,&nbsp;Chao Song ,&nbsp;Cornelia Rumpel ,&nbsp;Marie-France Dignac","doi":"10.1016/j.soilbio.2025.109809","DOIUrl":"10.1016/j.soilbio.2025.109809","url":null,"abstract":"<div><div>Although earthworms play a crucial role in soil biogeochemical processes, the importance of their traits in shaping the physicochemical properties of their casts remains poorly understood. This study aimed (1) to evaluate the influence of earthworm species and soil types on cast properties and (2) investigate the relationship between earthworm morphological, anatomical, physiological and behavioral traits and the physicochemical properties of their casts. Nine temperate earthworm species were introduced under controlled conditions in two contrasting soil types (Luvisol and Cambisol), and 21 traits were determined for each species. Casts were analyzed for their physicochemical properties, total and available organic carbon and nitrogen, and compared to control soil incubated under similar conditions without earthworms. Results showed that earthworm activity changed soil pH depending on soil type, with pH increasing in Cambisol, and decreasing in Luvisol. Species-specific effects on cast properties revealed a physicochemical gradient: the epigeic <em>L. castaneus</em> and epi-anecic <em>L. terrestris</em> produced casts with the highest nitrate, dissolved organic carbon, total organic carbon, and moisture levels, whereas cast from endogeic species showed the lowest values. Moreover, earthworm species exerted a stronger overall influence on cast properties than soil type (59 % vs. 24 %), underscoring the dominant role of species-specific traits in shaping cast characteristics. We identified nine key traits related to the earthworms' morphology, anatomy, physiology and behavior, that influenced cast properties directly or indirectly. Direct effect traits included mouth area, gizzard size and location, typhlosole complexity, intestinal mucus and cast production. Indirect effect traits, such as pigmentation, litter ingestion and litter-to-cast ratio, reflected the ecological behavior of earthworm species. This trait-based approach provides a promising avenue for future studies on the role of earthworms in soil biogeochemical cycling and a framework for improving our understanding of their impacts on soil organic matter dynamics.</div></div>","PeriodicalId":21888,"journal":{"name":"Soil Biology & Biochemistry","volume":"207 ","pages":"Article 109809"},"PeriodicalIF":9.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143775932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}