Applied Soil Ecology最新文献

{"title":"Biochar-derived dissolved organic matter (BDOM) shifts fungal community composition: BDOM-soil DOM interaction","authors":"Muhammad Azeem ,&nbsp;Jian Wang ,&nbsp;Jean J. Kubwimana ,&nbsp;Syed S.H. Kazmi ,&nbsp;Zulqarnain H. Khan ,&nbsp;Kaiwen He ,&nbsp;Ruixia Han","doi":"10.1016/j.apsoil.2025.105916","DOIUrl":"10.1016/j.apsoil.2025.105916","url":null,"abstract":"<div><div>Biochar-derived dissolved organic matter (BDOM is a highly reactive proportion of biochar, which can affect the microbial community composition in soil. Despite this, the mechanisms by which BDOM influences soil fungal communities and DOM dynamics remain poorly understood, limiting its effective application in soil management practices. In a microcosm experiment, we investigated the direct effect of biochar-derived dissolved organic matter (BDOM), instead of solid biochar matrix, on the fungal community composition, soil nutrient bioavailability, and soil dissolved organic matter (SDOM). The BDOM was derived from bone, plant, and manure and generated at low and high pyrolysis temperatures (LPT, HPT). LPT-derived BDOM revealed higher BDOM contents in the following order: rice husk (RB) &gt; rabbit manure (MB) &gt; sheep bone (SB) compared with HPT, causing higher SDOM contents in the soil. Fungal diversity indices were reduced, particularly with MB-derived BDOM. A significant shift in microbial taxonomy was observed at both the phylum and genus levels with the addition of BDOM. A higher abundance of Mortierellomycota (1.98-fold increase), Basidiomycota (1.39-fold increase), and Chytridiomycota (2.61-fold increase) was noticed with all added BDOM, except for MB-derived BDOM, compared to no BDOM addition. At LPT, the higher abundance of Mortierellomycota was linked to increased phosphorus availability in the order of SB400 &gt; MB400 &gt; RB400, compared to the control. Higher values of fluorescence (Flul), freshness (FrI), biological (BIX), and humification (HIX) indices were associated with LPT-derived BDOM, particularly SB-derived BDOM, while HIX was notably enhanced with MB-derived BDOM. These findings revealed that BDOM-induced changes in SDOM and its interaction with the fungal microbiome play a key role in soil organic matter dynamics, nutrient cycling, and soil quality.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105916"},"PeriodicalIF":4.8,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348073","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":"Fertilization regulates maize nutrient use efficiency through soil rhizosphere biological network and root transcriptome","authors":"Bowen Luo ,&nbsp;Huiling Hu ,&nbsp;Hao Zheng ,&nbsp;Ningxin An ,&nbsp;Jia Guo ,&nbsp;Zhi Nie ,&nbsp;Peng Ma ,&nbsp;Xiao Zhang ,&nbsp;Dan Liu ,&nbsp;Ling Wu ,&nbsp;Duojiang Gao ,&nbsp;Shiqiang Gao ,&nbsp;Shunzong Su ,&nbsp;Bo Zhu ,&nbsp;Shibin Gao ,&nbsp;Zhiyuan Yao","doi":"10.1016/j.apsoil.2025.105912","DOIUrl":"10.1016/j.apsoil.2025.105912","url":null,"abstract":"<div><div>Fertilization impacts soil biological communities, affecting their diversity, structure, and composition. These communities are crucial in rhizosphere microenvironment, influencing root genes expression and nutrient absorption/utilization of the crop. This study investigated the effects of different fertilization methods on rhizosphere biological network, transcriptome responses in maize roots, fertilizer use efficiency and maize yield in a long-term field experiment. The results revealed that the BCNPK (adding biochar to synthetic fertilizers) treatment exhibited the highest maize yield, which was 21–23 % higher than other fertilization treatments. Additionally, the BCNPK and RSDNPK (partial synthetic nitrogen replacement with crop residue) demonstrated significant advantages in minimizing nitrogen loss and enhancing nitrogen absorption and utilization efficiency. Compared to NPK (synthetic fertilizers), BCNPK, and OMNPK (partial synthetic nitrogen replacement with pig slurry), the network complexity of bacteria and fungi decreased under the RSDNPK treatment. The co-occurrence network analysis revealed that fertilization modulated the biological community's composition and abundance, which led to the formation of distinct ecological clusters in rhizosphere biological network. Furthermore, the abundance of these ecological clusters exhibited a significant correlation with crop yield and nutrient uptake. Structure equation modelling demonstrated that alterations in soil physicochemical properties significantly affected soil biodiversity and genes expression in maize root. Furthermore, soil biodiversity significantly correlated with the maize yield, underscored the pivotal role of rhizosphere organisms in determining crop yield. These findings serve as a foundational reference for subsequent researches on the mechanistic interactions between rhizosphere organisms and plants.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105912"},"PeriodicalIF":4.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143271648","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":"Vetch cover crops increase particulate organic carbon in citrus orchard by increasing lignin phenols","authors":"Jiajia Zhang ,&nbsp;Lei Lei ,&nbsp;Wenfa Xiao ,&nbsp;Xin Yang ,&nbsp;Willam R. Horwath ,&nbsp;Yiling Liao ,&nbsp;Hongbing Yang ,&nbsp;Zunji Jian ,&nbsp;Lixiong Zeng","doi":"10.1016/j.apsoil.2025.105921","DOIUrl":"10.1016/j.apsoil.2025.105921","url":null,"abstract":"<div><div>Green manure has long been used to increase soil organic carbon (SOC) and as an amendment to promote soil health in agricultural soils. Its use in orchard crops has a long history, but its role in SOC maintenance and accrual has received less attention than in row crop agriculture. In this study, we compared citrus orchards under clean tillage (control) with those under a 3-year cover of smooth vetch (<em>Vicia villosa</em> var. <em>glabrescens</em>) cover. The distribution of carbon content in SOC and its fractions, including free and occluded particulate organic carbon (fPOC and oPOC) content, mineral-associated organic carbon (MAOC), and changes in lignin phenols, amino sugars, and glomalin-related soil proteins (GRSP), were examined in the topsoil (0–10 cm) and subsurface soil (10–30 cm) and subsoil (30–50 cm). At topsoil under vetch cover, the contents of SOC, oPOC, and lignin phenols increased by 19.23 %, 65.49 %, and 52.44 %, respectively. The topsoil cover crop treatment also enhanced microbial necromass C turnover and decreased lignin phenol degradation, without affecting GRSP. The SOC and MAOC did not change significantly deeper soil layers. The increased available nitrogen (AN) content, fungi-to-bacteria ratio (F/B ratio), and AMF-to-saprophytic fungi ratio contributed to the accumulation of plant-derived C, while dissolved organic nitrogen, AN, F/B ratio, and exchangeable calcium positively influenced microbial-derived C. SOC accrual was mainly driven by the accumulation of oPOC in topsoil resulting in the increase in lignin phenols under vetch cover. These findings support the use of vetch cover as a green manure to improve SOC and promote soil health in orchard systems.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105921"},"PeriodicalIF":4.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143271652","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 faunal community transfers nutrient cycling functionality and plant-parasitic nematode suppression from different depths of a natural soil to an agricultural soil","authors":"Reza Ghaderi ,&nbsp;Helen L. Hayden ,&nbsp;Elena Colombi ,&nbsp;Ramesha H. Jayaramaiah ,&nbsp;Hang-Wei Hu ,&nbsp;Ji-Zheng He","doi":"10.1016/j.apsoil.2025.105933","DOIUrl":"10.1016/j.apsoil.2025.105933","url":null,"abstract":"<div><div>Soil biota play a pivotal role in shaping various ecosystem functions, ultimately contributing to soil health and human well-being. In this study, soil samples from four depths were collected from a remnant vegetation site and used as donor soil to assess whether soil fauna could transfer ecosystem functions, such as nitrogen (N) and phosphorus (P) cycling and nematode pest suppression, to a homogenised agricultural soil (receptive soil) in three incubation experiments. Ammonium, nitrate and plant-available phosphorus concentrations were measured as proxies for nutrient cycling, while the abundance of the two key plant-parasitic nematodes, <em>Pratylenchus neglectus</em> and <em>Merlinius brevidens</em>, served as proxies for plant-parasitic nematode suppression. Results revealed that soil fauna facilitated the transfer of up to 26 % more nitrogen from donor to receptive soil, but phosphorus levels remained unaffected. Nematode suppression effects were depth-specific and species-specific. The organic layer showed the highest nematode suppression, but depth 0–10 cm yielded the highest plant growth, suggesting physicochemical constraints in the organic layer. Nematode-based indices shifted towards a more mature and structured soil food web in the receptive soil. This study demonstrates the significant role of soil fauna in performing ecosystem functions particularly N cycling and plant-parasitic nematode suppression. These findings highlight the potential for using targeted soil amendments to enhance soil health, ultimately contributing to sustainable plant growth.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105933"},"PeriodicalIF":4.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143271309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rhizosphere bacterial communities mediate the effect of maize-soybean strip intercropping and nitrogen management on cadmium phytoextraction","authors":"Yuze Li,&nbsp;Ting Xing,&nbsp;Zhidan Fu,&nbsp;Tian Pu,&nbsp;Peng Ding,&nbsp;Yushan Wu,&nbsp;Feng Yang,&nbsp;Xiaochun Wang,&nbsp;Taiwen Yong,&nbsp;Wenyu Yang","doi":"10.1016/j.apsoil.2025.105934","DOIUrl":"10.1016/j.apsoil.2025.105934","url":null,"abstract":"<div><div>Concurrently accomplishing the removal of Cd in soil and maintaining sustainable agricultural production is challenging. Intercropping is a viable agricultural practice-based strategy. Based on a long-term field experiment, we investigated the effects of maize-soybean intercropping and nitrogen application on the rhizobacterial properties, crop growth, and Cd translocation. The results showed that the land equivalent ratio and metal removal equivalent ratio were 1.99 and 1.89 under no nitrogen treatment, and 1.83 and 1.45 under conventional nitrogen application. Compared to monoculture, intercropping significantly reduced the maize grain Cd content. Nitrogen management, rather than cultivation mode, was the primary factor determining Cd contents in soybean rhizosphere and roots. These factors also influenced the rhizobacterial communities of maize and soybean. Intercropping significantly increased maize rhizobacterial diversity while decreasing network complexity. Consequently, changes in microbial properties caused maize grain Cd content to decrease following intercropping. Soybean rhizobacterial network module abundances and topological properties were influenced by nitrogen management or cultivation mode, which were closely related to Cd content in the rhizosphere and root. This study demonstrates that intercropping enables maize and soybean to recruit various rhizobacterial communities via specialized strategies, resulting in specific Cd turnover patterns throughout the soil-root-plant continuum that survive from Cd stress. Our findings reveal the unique mechanisms by which rhizobacteria mediate crop-crop intercropping to remove Cd from cropland, emphasizing intercropping's potential to achieve overyielding while remediating heavy metal pollution.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105934"},"PeriodicalIF":4.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143271651","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":"Application of cellulose-rich organic resource improves soil quality and plant growth by recruiting beneficial microorganisms","authors":"Xing Zhou ,&nbsp;Yuanyuan Yan ,&nbsp;Ya Li ,&nbsp;Liangliang Liu ,&nbsp;Jun Zhou ,&nbsp;Chuanchao Dai ,&nbsp;Zucong Cai ,&nbsp;Xinqi Huang","doi":"10.1016/j.apsoil.2025.105909","DOIUrl":"10.1016/j.apsoil.2025.105909","url":null,"abstract":"<div><div>Organic amendments are commonly used to suppress soil-borne diseases by modulating the soil microbial community. However, it remains unclear whether organic amendments have universal suppression mechanisms across different soil resident microbiomes. Here, we established diseased (D) and healthy (H) microbiomes to examine the impacts of alfalfa and carboxymethylcellulose amendments on soil microbial communities, soil-borne pathogen suppression, and plant growth promotion. Our results indicated that both organic amendments significantly decreased the relative abundance of <em>Fusarium</em>, modified the soil physicochemical properties and microbial community in both diseased and healthy soils. Specifically, organic amendment significantly increased soil microbial activity, stimulated the growth of copiotrophic and plant-growth-promoting microorganisms. The application of carboxymethylcellulose resulted in a greater degree of pathogen control than the application of alfalfa straw, leading to the lowest pathogen abundance and disease severity index in watermelon. Organic amendment did not prevent Fusarium wilt outbreaks in diseased soil but significantly increased dry weight of watermelon in healthy soil. Additionally, the same organic amendment recruited the same specific biomarkers in different soil systems, and we found that cellulose was responsible for proliferation of pathogen-suppressive biomarkers (PSBs). These microbial changes contributed to positive effects on pathogen resilience and watermelon growth under cellulose-rich organic amendment. The <em>in vitro</em> tests further revealed that most bacterial PSB strains (i.e. <em>Chitinophaga</em>, <em>Pseudoxanthomonas</em>, <em>Rhizobium</em>, <em>Ensifer</em>, and <em>Luteimonas</em>) exhibited antagonistic activities against <em>F. oxysporum</em> and had a beneficial impact on plant growth. Overall, this study provides significant insights into the response of soil microbiome to organic amendment, and emphasizes the importance of beneficial biomarkers associated with cellulose-rich organic resources for soil quality and plant growth.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105909"},"PeriodicalIF":4.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093071","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 age and soil phosphate content shape microarthropod communities of Dutch forest ecosystems","authors":"Joren Bruggink ,&nbsp;Marie-Charlott Petersdorf ,&nbsp;Wilco C.E.P. Verberk ,&nbsp;Henk Siepel","doi":"10.1016/j.apsoil.2025.105918","DOIUrl":"10.1016/j.apsoil.2025.105918","url":null,"abstract":"<div><div>Soil microarthropods, particularly mites, are key contributors to the decomposition of plant litter and nutrient cycling in forest ecosystems, where they can reach high levels of biodiversity. However, their diversity can be impacted by soil disturbances such as soil compaction or organic matter removal and by phosphorus limitation, driven by nitrogen (N) deposition.</div><div>This study compares microarthropod communities across forest locations differing in soil age and soil phosphate levels, using a trait-based approach focused on the species' feeding guild and body size. We compared 3 old forest soils, 19 young forest soils, and 10 old hedgerow soils. The old hedgerow soils resembled old forest soils in age, but have higher P-availability, allowing us to disentangle these effects. We hypothesized that older soils, with minimal disturbance, will support higher species richness due to their poor colonization abilities.</div><div>Our results show that older soils have indeed a higher microarthropods species richness than young soils. Greatest differences in the species richness and abundance were observed in (herbo)fungivorous grazers, a group of mites essential for decomposition. Consequently, young forest soils are expected to exhibit a less efficient decomposition process. The higher P-availability in old hedgerow soils likely explains their greater richness of herbivorous grazers and the higher abundance of larger mite species, by creating a more efficient trophic transfer that supports larger bodied consumers. Our findings indicate that differences in body size and feeding guild correspond to differences across forest soils in terms of age and P-availability of forest soils.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105918"},"PeriodicalIF":4.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143271647","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":"Ectomycorrhizal fungi explain more variation in rhizosphere nutrient availability than root traits in temperate forests","authors":"Xiaolei Yan ,&nbsp;Lingyan Zhou ,&nbsp;Yamin Chen ,&nbsp;Ruiqiang Liu ,&nbsp;Liqi Guo ,&nbsp;Nan Li ,&nbsp;Ao Kang ,&nbsp;Kaiyan Zhai ,&nbsp;Guiyao Zhou ,&nbsp;Xuhui Zhou","doi":"10.1016/j.apsoil.2025.105923","DOIUrl":"10.1016/j.apsoil.2025.105923","url":null,"abstract":"<div><div>Plant roots, mycorrhizas and saprotrophic microbial communities interact to regulate plant nutrition and nutrient cycling. However, the role of mycorrhizal fungi in controlling rhizosphere nutrient availability remains poorly understood. Here, we sampled rhizosphere soils from seven ectomycorrhizal (EcM) tree species to investigate the influence of mycorrhizal fungi on soil nutrient availability. Our results indicate that nitrogen (N) and phosphorus (P) availability in rhizosphere soils vary depending on the ectomycorrhizal tree species. The abundance of ectomycorrhizal fungal operational taxonomic units (OTU) accounts for more variation in rhizosphere N and P availability than root traits and the saprotrophic microbial community. As the abundance of ectomycorrhizal fungal OTUs increases, rhizosphere available N content initially decreases and then increases, while available P content decreases. Root diameter, chemical traits, and the abundance of saprotrophic microbial OTUs were strongly correlated with ectomycorrhizal fungal OTU abundance, suggesting that interactions among roots, ectomycorrhizal fungi and saprotrophic microbes regulate rhizosphere N and P availability. Our results emphasize the importance of ectomycorrhizal fungi in governing rhizosphere nutrient availability in temperate forests. Incorporating these effects into models should improve simulations of forest biogeochemical cycles and inform forest management strategies in the context of global change.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"207 ","pages":"Article 105923"},"PeriodicalIF":4.8,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128924","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 impact of microplastic on nematodes: Soil type, plastic amount and aging as determinants for the fitness of Caenorhabditis elegans","authors":"Xuchao Zhang,&nbsp;Ralph Menzel,&nbsp;Liliane Ruess","doi":"10.1016/j.apsoil.2025.105883","DOIUrl":"10.1016/j.apsoil.2025.105883","url":null,"abstract":"<div><div>The presence of microplastics (MPs) in the environment is increasing, however, there is still limited knowledge on the potential threat to biodiversity and function of terrestrial ecosystems. Although soil is a primary sink for MPs, the effects on the soil fauna have not been extensively investigated. This applies in particular to ecotoxicological tests using soil as a medium to mirror a natural environment. In this study, we investigated the impact of conventional plastic, low-density polyethylene (LDPE), and biodegradable plastic, a blend of poly(lactic acid) and poly(butylene adipate-<em>co</em>-terephthalate) (PLA/PBAT), with particle sizes of &lt;180 μm and 180–500 μm. As a representative of the species-rich and abundant group of soil nematodes, the model nematode <em>Caenorhabditis elegans</em> was cultivated in three different soil substrates: a standard soil (LUFA - loamy sand), an artificial substrate (OECD - sand with peat) and an arable soil fertilized with farmyard manure (RFYM – sandy loam). The selected MPs were used at 0.01, 0.1, and 1 % w/w as pristine or artificially aged (degradation by sunlight or soil microorganisms) material. With pristine MP, reproduction and growth of <em>C. elegans</em> were negatively affected by LDPE in both RFYM and LUFA soils at 1 %, while PLA/PBAT did not cause any impairment of nematodes across soils. The environmentally relevant amount of 0.01 % did not show any significant effect. Linear regression analysis showed a negative relationship between the amount of LDPE and the relative offspring and growth of nematodes across all three soil types, while for PLA/PBAT, this was only evident at a size of 180–500 μm in OECD soil. The toxicity to <em>C. elegans</em> persisted with aged LDPE, while the aged PLA/PBAT generally had a greater toxicity than in its pristine state. The two simulated aging methods did not differ significantly in their negative impact on nematode offspring, while light aging showed a stronger inhibition of growth than microbial aging. Interestingly, aging time did not alter the effects on nematode offspring. In conclusion, the environmentally relevant concentration of MPs was not toxic, and the toxicity of the tested MP to nematodes was affected by soil type and related to MP amount and aging. The latter, however, rendered the biodegradable PLA/PBAT toxic to <em>C. elegans</em>. These findings provide crucial insights into the ecotoxicological risks of MPs to soil nematodes under semi-natural conditions in soil substrates.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"206 ","pages":"Article 105883"},"PeriodicalIF":4.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of plant diversity in potato-ley strip-cropping systems on soil microbial communities","authors":"L.G.A. Riggi ,&nbsp;T. Ranheim Sveen ,&nbsp;C. Castaño ,&nbsp;P. Onorati ,&nbsp;D.F. van Apeldoorn ,&nbsp;M. Berri ,&nbsp;L. Mommer ,&nbsp;K.E. Clemmensen ,&nbsp;M. Bahram","doi":"10.1016/j.apsoil.2024.105777","DOIUrl":"10.1016/j.apsoil.2024.105777","url":null,"abstract":"<div><div>Crop diversification enhances agroecosystem productivity, yet underlying mechanisms, particularly those underground, remain unclear. Diversification practices, such as strip-cropping (alternating strips of different crops) and integrating legumes (plant-based fertilization), may improve nutrient uptake and reduce pathogen build-up via soil microbial community shifts. However, most evidence for plant diversity benefits arises from grasslands, and its impact in cropping systems remains underexplored. This study examined microbial communities in organically managed, long-term potato-ley strip-cropping systems, comparing mono-cropping and strip-cropping, and further examined the effect of replacing animal manure by integrating legumes and plant-based fertilization in strip-cropping systems. To assess changes in microbial community composition, bacterial, fungal and arbuscular mycorrhizal fungi (AMF) DNA was sequenced. In addition, AMF and potato fungal pathogens were quantified using quantitative PCR. Strip-cropping increased AMF and soil-borne potato pathogens at the strip edges, where ley and potato interacted, though edge effects were absent in plant-based strip-cropping systems. Despite higher pathogen abundance at the edges, these did not relate to more significant tuber disease symptoms or yield losses. Changes in soil abiotic properties, particularly lower pH, from plant-based management, influenced fungal community structure more than strip-cropping. Bacterial community structure, including N-fixing bacteria, remained unaffected by either practice. Our results indicate that legume legacy in plant-based systems more strongly affected fungal community than strip-cropping, while strip-cropping benefitted AMF abundances. Taken together, our findings suggest that for sustainable agricultural practices aiming to improve soil health and crop productivity, a comprehensive approach that considers crop diversity, soil management, and fertilization practices is necessary.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"206 ","pages":"Article 105777"},"PeriodicalIF":4.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}