Shan Li , Yuanyuan Yao , Congling Zhou , Songyuan Wang , Zihan Liu , Yan Liu , Junyin Li , Guiwei Wang , Bin Gao , Dongdong Cheng , Yuechao Yang
{"title":"Inorganic amendment can delay the degradation of organic amendment by enhancing its resistance and mitigating microbial activities in saline–alkali soils","authors":"Shan Li , Yuanyuan Yao , Congling Zhou , Songyuan Wang , Zihan Liu , Yan Liu , Junyin Li , Guiwei Wang , Bin Gao , Dongdong Cheng , Yuechao Yang","doi":"10.1016/j.apsoil.2025.106215","DOIUrl":"10.1016/j.apsoil.2025.106215","url":null,"abstract":"<div><div>Soil organic matter (SOM) plays a crucial part in improving soil quality, promoting soil microbial activities, and buffering salt stress, in saline-alkali region. Organic amendment effectively improves the quality and C storage in saline-alkali soil, while it still remains tenuous that how can inorganic amendment affects SOM composition and microbial characteristics when applying organic amendment. An 800-day incubation experiment in saline-alkali soil were conducted with treatment of organic amendment (furfural residue) and a mixture of organic amendment and inorganic amendment (furfural residue and mineral amendment, 4:1). Our results showed that adding mineral amendment based on furfural residue 1) increased the contents of particulate organic carbon, total lignin phenol, cellulose, humic acid (HA), HA-C, and silt-clay-C by 17.64 %, 20.28 %, 168.32 %, 27.62 %, 28.15 % respectively; 2) improved the aromaticity of solid-state SOM and HA, reduced the potential transformation of HA (especially lignin-like compounds), and increased newly generated lignin-like and condensed aromatic-like compounds in HA; 3) reduced microbial biomass and necromass C respectively by 40.08 % and 15.58 %, changing C-degrading enzyme activities and bacterial communities. These findings indicated that extra additive inorganic amendment can reserve plant-derived C and slow microbial-derived C formation by mitigating microbial activities and protecting degradation reactants and products in HA (especially lignin-like and condensed aromatic-like compounds). This study provides direct experimental evidence for the sustainable development of inorganic amendments in the remediation work of saline-alkali soil.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106215"},"PeriodicalIF":4.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167849","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}
R. Hernández Maqueda , I. Ballesteros , A.J. Aguirre , D. Meca , R. Linacero , F. del Moral
{"title":"Influence of green manuring on soil properties, abundance and expression of key denitrification genes in a greenhouse Anthrosol","authors":"R. Hernández Maqueda , I. Ballesteros , A.J. Aguirre , D. Meca , R. Linacero , F. del Moral","doi":"10.1016/j.apsoil.2025.106216","DOIUrl":"10.1016/j.apsoil.2025.106216","url":null,"abstract":"<div><div>Intercropping with green manure is a valuable agronomic practice for promoting sustainability agricultural systems. The aim of this study was to evaluate the effects of green manure (GM) – based on a mixture of vetch (<em>Vicia sativa</em> L.), forage turnip (<em>Brassica rapa</em> L. subsp. <em>rapa</em>), and oats (<em>Avena sativa</em> L.) – on the physicochemical properties of a greenhouse Anthrosol and its impact on the abundance and expression of denitrifying genes (<em>nirK</em>, <em>nirS</em>, and <em>nosZ</em> (clade I and II)) using real-time PCR. The cultivated crop throughout the three-year experiment was eggplant (<em>Solanum melongena</em> L. subs. <em>Telma</em>) fertilized with manure and crop residues from the previous growing season. A linear mixed model (LMM) was used to assess the effect of GM on both the physicochemical variables and the target-gene and transcript copy number in the soil. After three years of GM coverage, moderate changes in soil physicochemical properties were observed, with the exception of a significant decrease in soil temperature (<6 %) and ammonium ion concentration (<14 %) with GM application. Gene copy numbers remained largely unchanged between treatments, however transcripts levels decreased for all target genes under GM, with particularly pronounced reduction for <em>nirK</em> (p < 0.0001) and <em>nosZ II</em> (p < 0.05), suggesting partial suppression of gene transcription within the denitrification pathway. In addition, potassium (K<sup>+</sup>) and soil moisture were found to correlate with DNA and RNA abundances, indicating a complex interaction between salinity and soil moisture in the regulation of the denitrification process.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106216"},"PeriodicalIF":4.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146839","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}
Yazhan Ren , Qinping Sun , Yufei Li , Junxiang Xu , Qianqian Lang , Jijin Li , Xiang Zhao
{"title":"Biogas slurry acts as a “microbial gatekeeper” to lower the spread risk of antibiotic resistance genes in soil-lettuce system","authors":"Yazhan Ren , Qinping Sun , Yufei Li , Junxiang Xu , Qianqian Lang , Jijin Li , Xiang Zhao","doi":"10.1016/j.apsoil.2025.106212","DOIUrl":"10.1016/j.apsoil.2025.106212","url":null,"abstract":"<div><div>The risk of antibiotic resistance genes (ARGs) from livestock manure has attracted extensive attention. However, the impacts of products at various stages of organic fertilizer production on ARGs in soil-lettuce system haven't been comprehensively evaluated. This study looked into the impacts of these products (cow manure, biogas slurry, biogas residue, and organic fertilizer) on transport and bioaccumulation of ARGs in soil-lettuce system by high-throughput quantitative PCR. Results showed that the relative abundance of ARGs in cow manure treatment (CM) and organic fertilizer treatment (OF) were reduced in soil (52.94 % and 41.18 %, respectively) compared to CK. Biogas slurry treatment (BS) had the lowest relative abundance of ARGs in all treatments with the value in root, inner leaf, and outer leaf being 0.07, 0.03, and 0.08 copies/16S rRNA gene copies, respectively (<em>P</em> < 0.05). For core ARGs, biogas residue treatment (BR) had the highest abundance in soil, while BS had the lowest abundance in plant parts. For high-risk ARGs, CM and OF treatments led to high abundance of <em>aac</em>(<em>6</em>′)<em>-Ib-03</em> gene in soil, but BS treatment reduced the abundance of high-risk ARGs in lettuce. BS treatment exhibited a distinct bacterial network and fewer ARGs-bacteria correlations, probably due to the selective promotion of <em>Proteobacteria</em> and its nutrient cycling groups. ARGs were enriched in plant tissues (bioaccumulation factor (BAF) > 1) at CM and OF treatments, while were suppressed in aerial parts (inner and outer leaves) of BS, flooded with biogas slurry (BSF), and BR treatments. Overall, different products at various production stages have various effects on ARGs spreading in soil-plant system. BS and BR may be good at controlling ARGs spreading and provide guidance for waste treatment and agricultural production.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106212"},"PeriodicalIF":4.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139794","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":"Implications of size-dependent predation of protists and nematodes on the composition and functionality of the prokaryotic soil microbiome","authors":"Haotian Wang , Stefan Geisen , Christoph C. Tebbe","doi":"10.1016/j.apsoil.2025.106201","DOIUrl":"10.1016/j.apsoil.2025.106201","url":null,"abstract":"<div><div>Protists and nematodes are dominant predators of prokaryotic communities in soil. Their strong difference in size suggests different feeding strategies and preferences. Here we analyzed the relevance of size-dependent predation by distinguishing in microcosm experiments the contribution of small-sized and large-sized protists and nematodes, respectively. Sterilized soils were inoculated with soil suspensions filtrated across 250 μm, 100 μm, 60 μm, 20 μm and 5 μm pore sized membranes and a non-filtrated control. After 60 days of incubation, only the soils inoculated with the 5 μm-filtrate showed lower abundances of bacteria, archaea and fungi, and a differently composed protistan community. The nematode communities were always dominated by the small-sized bacterivore genus <em>Acrobeloides</em>. Correlation analyses indicated that small-sized protists were associated with a wider range of prokaryotic taxa than larger sized protists. In contrast to small-sized nematodes, large-sized showed no correlation with specific prokaryotic taxa. The comparison of effects on prokaryotes at DNA and RNA levels suggested a preference of the soil predators for actively growing rather than resting cells. Small-sized protists (only Cercozoa) and nematodes had a more pronounced influence on the gene abundances of microbial groups and N cycling genetic potentials, i.e., bacterial <em>amoA</em>, <em>nirS</em>, and <em>nosZ</em>II genes. Therefore, we conclude that the common ecological size-dependent predation theory also applies to trophic interactions of protists and nematodes with soil prokaryotes. The distinct feeding preferences can alter the prevalence of different N-functional genes, which could thus potentially modify the dynamics of the N cycling in soil.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106201"},"PeriodicalIF":4.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146838","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}
Yan Zhang , Ajuan Zhang , Zheng Zhou , Chengwei Tu , Xueyong Pang
{"title":"The long-term effect of gap size on soil invertebrates in subalpine forest","authors":"Yan Zhang , Ajuan Zhang , Zheng Zhou , Chengwei Tu , Xueyong Pang","doi":"10.1016/j.apsoil.2025.106202","DOIUrl":"10.1016/j.apsoil.2025.106202","url":null,"abstract":"<div><div>Frequent extreme climate events cause large-scale forest mortality, forming canopy gaps of various sizes that affect plant renewal and soil hydrothermal conditions. However, their long-term effects on soil invertebrate communities, particularly in fragile subalpine forests, remain understudied. Here we established a long-term monitoring platform in <em>Picea asperata</em> plantations to simulate natural gap disturbance across a gradient of control and artificially created gaps: small (74 m<sup>2</sup>), medium (109 m<sup>2</sup>), and large (196 m<sup>2</sup>) gap. After a 12-year period following gap formation, we assessed the Collembola, one of the most abundant and diverse soil invertebrates. Our results indicate that gap formation overall decreased the Collembola abundance by 43.7 %, with little effect on species richness. Gap sizes influenced Collembola community composition among small, medium, and large sizes, while large gap assembled similar composition with control plots, presumably attributed to similar abiotic condition i.e., litter phosphorus and litter-layer moisture. Further, gap formation caused shifts Collembola community towards smaller body sizes and increased sexual reproduction, indicating resource limitations probable due to litter deprivation after gap formation. Our study suggests an overall negative long-term effects of gap formation on abundance and trait performances, but large gaps showed a relatively promising future as they inhabited a faster recovery at least in abiotic condition. Given that our findings are based on a single sampling event, future studies would benefit from repeated sampling campaigns to capture temporal variability and offer valuable insights for long-term forest management strategies.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106202"},"PeriodicalIF":4.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134791","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}
Lin Chen , Qiaoling Zhang , Wei Zhang , Kangyun Zhu , Qingyu Xu , Kaiming Hu , Qiuyue Feng , Yuyan Liu , Binhao Wang
{"title":"Metagenomic insights into the effects of desiccation on functions associated with biogeochemical cycles and resistome of microbial communities","authors":"Lin Chen , Qiaoling Zhang , Wei Zhang , Kangyun Zhu , Qingyu Xu , Kaiming Hu , Qiuyue Feng , Yuyan Liu , Binhao Wang","doi":"10.1016/j.apsoil.2025.106190","DOIUrl":"10.1016/j.apsoil.2025.106190","url":null,"abstract":"<div><div>Climate change and human activities are altering the hydrological conditions of wetlands, leading to an increasingly severe desiccation phenomenon. Microorganisms play a crucial role in maintaining the ecological health of freshwater ecosystems, and in turn, they are influenced by the state of these ecosystems. However, the changes in composition and diversity of functional gene of microbial communities during wetland desiccation remain poorly understood. To address this knowledge gap, we employed metagenomic techniques to assess the abundance and diversity of methane cycling genes (MCGs), nitrogen cycling genes (NCGs), sulfur cycling genes (SCGs), phosphorus cycling genes (PCGs), antibiotic resistance genes (ARGs), mobile genetic elements (MEGs), and virulence factors (VFs) across various habitats in the Xixi National Wetland Park, including ponds, swamplands, and peatlands. Our results revealed significant differences in gene diversity and abundance, with swampland showing the highest levels of functional gene diversity (mean richness of MCGs: 245, NCGs: 60, SCGs: 165, PCGs: 125, ARGs: 116, MGEs: 39, VFs: 546) among three habitats. Notably, the peatland exhibited a highest abundance of ARGs (mean clean reads >9000), particularly those related to multidrug resistance, and an increase in abundance of virulence factors related to nutritional/metabolic types (from pond and swampland to peatland). Through binning analysis, we identified core functional microbiomes and found that metabolic gene abundance was highest in the peatland. These findings suggest that wetland desiccation may pose risks to ecosystem health by altering the composition and abundance of microbial functional genes.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106190"},"PeriodicalIF":4.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134790","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}
Shanshan Qi , Daiyi Chen , Mengting Yan , Zhiyun Huang , Haochen Yu , Guangqian Ren , Hu'anhe Xiong , Wei Fu , Biying Zhao , Zhicong Dai , Daolin Du , Torsten Thomas
{"title":"Arbuscular mycorrhizal fungi enhance glyphosate resistance in an invasive weed: Implications for eco-environmental risks","authors":"Shanshan Qi , Daiyi Chen , Mengting Yan , Zhiyun Huang , Haochen Yu , Guangqian Ren , Hu'anhe Xiong , Wei Fu , Biying Zhao , Zhicong Dai , Daolin Du , Torsten Thomas","doi":"10.1016/j.apsoil.2025.106203","DOIUrl":"10.1016/j.apsoil.2025.106203","url":null,"abstract":"<div><div>Invasive weeds cause substantial ecological, economical, and social problems, and are currently being controlled by herbicide applications. However, how herbicides affect other ecological interactions of invasive weeds, including their symbiosis with arbuscular mycorrhizal fungi (AMF), remains poorly understood. In this study, we therefore conducted field investigation to understand how the herbicide glyphosate affects the AMF diversity in the rhizosphere of the invasive weed <em>Solidago canadensis.</em> We also performed a greenhouse experiment to study if AMF can contribute to herbicide resistance. The results showed that the AMF colonization rate was significantly higher in <em>S. canadensis</em> when exposed to glyphosate in the field or in greenhouse settings. AMF diversity was also found to be higher in the rhizosphere soil after glyphosate application in the field. AMF colonization in greenhouse experiments also positively correlated with plant growth and reduced amounts of damaged leaves and the plant's content of the stress markers flavonol and anthocyanin. Chlorophyll content was significantly enhanced by AMF colonization, regardless of glyphosate application. These results indicate that herbicide can promote AMF colonization and diversity, and that AMF can enhance the herbicide resistance of <em>S. canadensis</em>. These findings suggest that herbicide application may promote the spread of <em>S. canadensis</em> through enhanced microbial interactions, posing new eco-environmental risks.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106203"},"PeriodicalIF":4.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139600","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}
Jisheng Xu , Tantan Zhou , Zepeng Xuan , Qingxia Wang , Yunpeng Zhou , Jiabao Zhang , Bingzi Zhao
{"title":"Dissolved organic carbon replenishment enhances organic matter mineralization under extremely saline-sodic conditions following straw incorporation","authors":"Jisheng Xu , Tantan Zhou , Zepeng Xuan , Qingxia Wang , Yunpeng Zhou , Jiabao Zhang , Bingzi Zhao","doi":"10.1016/j.apsoil.2025.106207","DOIUrl":"10.1016/j.apsoil.2025.106207","url":null,"abstract":"<div><div>Soil sodicity, in combination with salinity, enhances organic matter solubility and impacts organic carbon dynamics. However, the mechanisms of organic carbon mineralization in saline-sodic soils, especially in extremely sodic environments, remain unclear. We conducted a three-month incubation experiment using a randomized block design to clarify this mechanism. With <sup>13</sup>C-labelled maize straw as the substrate, we compared organic matter mineralization and the priming effect (PE) in two saline-sodic soils (exchangeable sodium percentage 50.1 % and 36.5 %, respectively) with that in a nonsaline soil (exchangeable sodium percentage 4.3 %). Soil samples were collected at 4, 14, 59, and 103 days to analyze dissolved organic carbon (DOC), microbial biomass, and bacterial community composition. Notably, despite similar cumulative CO<sub>2</sub> emissions across all soils over 103 days, the saline-sodic soils displayed distinct temporal dynamics in organic carbon mineralization. In the initial four days, they had reduced primed CO<sub>2</sub> and straw-derived CO<sub>2</sub>, but these disparities narrowed by the end of the incubation. Additionally, in saline-sodic soils, despite lower microbial biomass and diversity, higher DOC levels were observed. DOC concentrations significantly increased over time after straw addition and showed a significant positive correlation with total CO<sub>2</sub> emissions (including native soil CO<sub>2</sub>, primed C, and straw-derived CO<sub>2</sub>). Moreover, DOC concentration was positively correlated with genera whose abundance surged following straw addition under extremely sodic conditions. Partial least squares path modeling illustrated that DOC concentration had a more significant direct impact on total CO<sub>2</sub>, straw-derived CO<sub>2</sub>, and PE in saline-sodic soils compared to the nonsaline soil, and indirectly affected them by modulating microbial co-occurrence network modules. Our study thus emphasizes the pivotal role of DOC in facilitating mineralization and priming in saline-sodic soils, offering energy and substrates to microbial communities.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106207"},"PeriodicalIF":4.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124777","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":"Combined improvement of coastal saline-alkali soils by biochar and Azotobacter chroococcum: Effects and mechanisms","authors":"Jinju Hou , Jiawen Tang , Xiaotong Zhang , Shudong Zhang , Qiuzhuo Zhang","doi":"10.1016/j.apsoil.2025.106214","DOIUrl":"10.1016/j.apsoil.2025.106214","url":null,"abstract":"<div><div>This study presents an innovative approach by combining nitrogen-fixing bacterial strain <em>Azotobacter chroococcum</em> with <em>Solidago canadensis</em>-based biochar to enhance the quality of coastal saline-alkaline soils and promote the resource utilization of invasive alien species, thereby mitigating their environmental impact. The results demonstrated that significant improvements in soil bulk density, water retention, and nutrient retention capacity were realized at the addition concentrations of 2.5 % and 10 mL kg<sup>−1</sup> for biochar and <em>Azotobacter chroococcum</em>, respectively. Under 90-day of soil incubation, the co-application of <em>Solidago canadensis</em>-based biochar and <em>Azotobacter chroococcum</em> increased soil organic carbon by 14.65 % and nitrate nitrogen (NO<sub>3</sub><sup>−</sup>-N) content by 60.54 %, compared to individual treatments of biochar. Relative to the bacterial application alone, co-application led to increases of 74.75 % and 18.69 % in soil organic carbon and NO<sub>3</sub><sup>−</sup>-N, respectively, demonstrating a clear synergistic effect. The abundant carbonaceous substances in biochar provided a favorable nutritional environment for <em>Azotobacter chroococcum</em>, significantly increasing the relative abundance of the nitrogen-fixing gene (<em>nifH</em>) and soil nitrogenase activity, thereby enhancing soil nitrogen content. Meanwhile, <em>Azotobacter chroococcum</em> markedly reduced the labile carbon fractions within biochar, thus increasing the overall stability of both the biochar and soil carbon pools. Additionally, the relative abundance of <em>Proteobacteria</em>, <em>Actinobacteria</em>, and <em>Bacteroidetes</em> was increased for enhancing soil nutrient cycling. Redundancy analysis indicated that soil organic matter, Olsen-P, and NO<sub>3</sub><sup>−</sup>-N were the primary drivers of microbial community changes. Variance decomposition analysis revealed that the combined contribution rate of <em>Azotobacter chroococcum</em> and biochar was 27.64 %, exhibiting a significant correlation. These results provide new insights and a scientific basis for sustainable and eco-friendly strategies in coastal saline-alkali soil remediation.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106214"},"PeriodicalIF":4.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131762","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}
Zhen Guo , Shuai Zhan , Peng Zhang , Peng Li , Bo Zhang
{"title":"Integrating soil biofilms: A holistic approach to understanding their role in soil health","authors":"Zhen Guo , Shuai Zhan , Peng Zhang , Peng Li , Bo Zhang","doi":"10.1016/j.apsoil.2025.106213","DOIUrl":"10.1016/j.apsoil.2025.106213","url":null,"abstract":"<div><div>Soil biofilms represent the predominant form of microbial growth and exert a crucial influence on soil health and the environment. Microorganisms employ various physical and chemical mechanisms to mitigate unfavorable environmental conditions at each stage of soil biofilm development. Factors such as temperature, pH, nutrients, extracellular fluids, minerals, EPS, and cell-mineral surface morphology significantly impact biofilm formation and nutrient cycling. Soil minerals play a pivotal role in aggregate and biofilm formation. As the physical basis for aggregate formation, minerals can closely interact with organic matter through adsorption and binding, stabilizing soil structure. They also serve as the primary interface for microbial attachment, facilitating biofilm development. The type, content, and surface characteristics of minerals directly influence aggregate stability and biofilm composition, which in turn affect overall soil ecological function. Consequently, a comprehensive investigation of the role of minerals in aggregate and biofilm formation, and the relationship between biofilms and soil health regulation, is essential for soil conservation and ecological restoration.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106213"},"PeriodicalIF":4.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124778","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}