Applied Soil Ecology最新文献_第5页

Effects of sample storage conditions on agricultural soil bacterial diversity and functionality 样品保存条件对农业土壤细菌多样性和功能的影响

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-06-04 DOI: 10.1016/j.apsoil.2025.106218

Sara Del Duca , Cristina Aponte , Carmen Trasar-Cepeda , Francesco Vitali , Antonia Esposito , Roberta Pastorelli , Gilberto Bragato , Flavio Fornasier , Markéta Sagova-Mareckova , Marjetka Suhadolc , Stefano Mocali

{"title":"Effects of sample storage conditions on agricultural soil bacterial diversity and functionality","authors":"Sara Del Duca , Cristina Aponte , Carmen Trasar-Cepeda , Francesco Vitali , Antonia Esposito , Roberta Pastorelli , Gilberto Bragato , Flavio Fornasier , Markéta Sagova-Mareckova , Marjetka Suhadolc , Stefano Mocali","doi":"10.1016/j.apsoil.2025.106218","DOIUrl":"10.1016/j.apsoil.2025.106218","url":null,"abstract":"<div><div>Archived soil series provide valuable opportunities to assess microbial temporal dynamics, which are essential for identifying appropriate soil management practices. However, the soil microbiome is usually studied using cryopreserved fresh soils, while almost all archived soils are dry and stored at room temperature. The aims of the present study were to i) evaluate potential differences in the soil bacterial community composition and enzymatic activity between dry-stored and frozen samples, and ii) assess whether the storage method influences the capacity to detect microbial differences related to environmental factors.</div><div>Soil samples were obtained from two long-term experiments with different tillage intensities, collected in 2011/2012 and 2022, and stored under both frozen and dry conditions. Bacterial community composition was assessed using high-throughput sequencing, while enzymatic activity was analyzed through biochemical assays.</div><div>The results showed that bacterial community composition and enzymatic activity were significantly influenced by the storage method. Additionally, the effect of storage duration was observed by comparing the concordance between data from frozen and dry samples collected in 2011/2012 (long-term storage) and in 2022 (short-term storage). Nonetheless, the analysis of the impact of environmental factors (e.g., tillage) on the bacterial and enzymatic profiles of the samples revealed a consistency between dry and frozen samples. This suggests that storage conditions did not compromise the ability to detect biological differences associated with management practices. Further studies on a broader set of soil samples are needed to confirm these findings and to support the use of dry soil samples for microbiological analyses.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106218"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205454","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}

引用次数: 0

Impact of microplastics on CO2 emissions in paddy soils: The role of cultivation duration and microbial community 微塑料对水稻土CO2排放的影响：栽培时间和微生物群落的作用

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-06-04 DOI: 10.1016/j.apsoil.2025.106237

Lanfang Hu , Xinyi Hu , Yongxiang Yu , Huaiying Yao

{"title":"Impact of microplastics on CO2 emissions in paddy soils: The role of cultivation duration and microbial community","authors":"Lanfang Hu , Xinyi Hu , Yongxiang Yu , Huaiying Yao","doi":"10.1016/j.apsoil.2025.106237","DOIUrl":"10.1016/j.apsoil.2025.106237","url":null,"abstract":"<div><div>Microplastics (MPs) are increasingly recognized for their potential to alter soil carbon dynamics, yet their effects on carbon dioxide (CO<sub>2</sub>) emissions and associated microbial mechanisms remain unclear in paddy soils with varying cultivation histories. Using a microcosm experiment, we investigated how polyethylene MPs (0 %, 0.01 %, 0.1 %, 0.5 %, and 1 %) influence CO<sub>2</sub> emissions, carbon-degrading genes, and microbial communities in soils with different rice cultivation durations (3, 15, and 40 years). MPs did not exhibit a dose-response relationship with CO<sub>2</sub> emissions in the soils cultivated for ≤15 years, but 1 % MPs increased emissions by 5–8 % across all soils (<em>p</em> < 0.05). In the soil cultivated for 40 years, even 0.01 % MPs stimulated the release of CO<sub>2</sub>, as the exposure of MPs (0.01–1.0 %) significantly increased CO<sub>2</sub> emissions per unit of soil organic carbon by 6–9 %. The abundance of <em>abfA</em> and <em>sga</em> genes linked to labile carbon degradation correlated positively with CO<sub>2</sub> emissions in 3- and 15-year soils, respectively, whereas these genes were not able to explain the change of CO<sub>2</sub> emissions in 40-year soils. Microbial communities were more significantly shaped by cultivation duration than by MPs, with 15-year soil showing a markedly lower oligotrophic-to-copiotrophic microbial ratio than 3- and 40-year soils. Network analysis identified potential hosts of carbon-degrading genes, including <em>Herminiimonas</em> (3- and 40-year soils) and <em>Pelagibacterium</em>, <em>Undibacterium</em>, <em>Fulvivirga</em>, and <em>Muriicola</em> (15- and 40-year soils). Our findings demonstrate that 1 % MPs significantly enhance CO<sub>2</sub> emissions from paddy soils, whereas the threshold for MP-induced soil organic carbon decomposition decreases to 0.1 % with prolonged cultivated, suggesting an increased sensitivity of cultivated soils to MPs contamination over time.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106237"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205734","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}

引用次数: 0

Fungal community is more sensitive to the short-term application of biochar in saline farmland soil than bacterial community 在盐渍农田土壤中，真菌群落对短期施用生物炭比细菌群落更敏感

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-06-04 DOI: 10.1016/j.apsoil.2025.106219

Bin Zhu , Jinqiu Li , Jizhi Li , Xin Chen , Guangyu Chi

{"title":"Fungal community is more sensitive to the short-term application of biochar in saline farmland soil than bacterial community","authors":"Bin Zhu , Jinqiu Li , Jizhi Li , Xin Chen , Guangyu Chi","doi":"10.1016/j.apsoil.2025.106219","DOIUrl":"10.1016/j.apsoil.2025.106219","url":null,"abstract":"<div><div>Alterations in microbial community structure can serve as critical indicators for assessing the effectiveness of soil salinization remediation. However, the response of microorganisms to biochar addition in salinized soil remains unclear. A biochar addition experiment was conducted on salinized farmland with four biochar application rates: 0 t/ha as control (CK), 20 t/ha (B20), 40 t/ha (B40), and 80 t/ha (B80). The results showed that biochar application increased soil water content (SWC), significantly reduced soil Na<sup>+</sup> content and sodium adsorption ratio (SAR), and enhanced the availability of nutrients. The contents of available phosphorus (AP) and available potassium (AK) increased with higher biochar application rates. These changes in soil physicochemical properties could alter differences in metabolic composition, consequently influencing the structural characteristics of soil bacterial and fungal communities. Specifically, the relative abundance of Actinobacteria, Bacteroidetes, and Planctomycetes increased in the bacterial community, whereas in the fungal community, the relative abundance of Ascomycota increased and that of Basidiomycota decreased. The richness and diversity indices of the bacterial community initially increased and then decreased with increasing biochar application, reaching a maximum at 40 t/ha; the diversity of fungal species was lower at 40 t/ha than at 20 and 80 t/ha, but their richness gradually increased with increasing application. The fungal community showed greater sensitivity to biochar addition than bacteria. The study offers novel insights into the impact of biochar on the rhizosphere environment of saline-alkali soils and its potential for soil amelioration.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106219"},"PeriodicalIF":4.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205457","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}

引用次数: 0

Long-term influence of a municipal solid waste compost on the functionality and biodiversity of a soil contaminated with potentially toxic elements 城市固体废物堆肥对被潜在有毒元素污染的土壤的功能和生物多样性的长期影响

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-06-03 DOI: 10.1016/j.apsoil.2025.106220

Diquattro Stefania , Garau Giovanni , Pinna Maria Vittoria , Garau Matteo , Bagella Simonetta , Obinu Lia , Porceddu Andrea , Roggero Pier Paolo , Castaldi Paola

{"title":"Long-term influence of a municipal solid waste compost on the functionality and biodiversity of a soil contaminated with potentially toxic elements","authors":"Diquattro Stefania , Garau Giovanni , Pinna Maria Vittoria , Garau Matteo , Bagella Simonetta , Obinu Lia , Porceddu Andrea , Roggero Pier Paolo , Castaldi Paola","doi":"10.1016/j.apsoil.2025.106220","DOIUrl":"10.1016/j.apsoil.2025.106220","url":null,"abstract":"<div><div>The use of organic amendments to restore the functionality and biodiversity of sites contaminated by potentially toxic elements (PTEs), such as abandoned mining lands, represents one of the most modern eco-sustainable strategies. Short-term laboratory-scale studies showed that compost from municipal solid waste (MSWC) can reduce PTEs mobility and increase soil fertility, functionality, and plant growth. However, its long-term impact in the open-field has been rarely evaluated (and is essentially unknown). For this purpose, different biochemical and microbial endpoints and plant diversity were evaluated six years after the addition of different MSWC amounts to a PTE-contaminated mine soil (i.e., Sb 416 mg·kg<sup>−1</sup>; Pb 2653 mg·kg<sup>−1</sup> and Zn 7666 mg·kg<sup>−1</sup>). The addition of increasing amounts of MSWC (i.e., 0.0 %; 1.5 %, 3.0 %, and 4.5 % <em>w</em>/w: T0, T1, T2, and T3, respectively) enhanced microbial respiration (e.g., ~ 5.1-fold in T3 compared to T0) as well as selected enzyme activities (e.g., dehydrogenase ~12-fold, β-glucosidase ~11-fold and urease ~4-fold in T3 compared to T0, respectively). Moreover, the bacterial communities of MSWC-treated soils showed a higher Shannon α-diversity index compared to T0. Surveys of the vegetation in the field identified 56 plant species, with therophytes as the dominant life form (61 %). Non-metric multidimensional scale and Permanova analysis revealed differences between the vegetation of the amended and control plots, but not between the plots amended with different MSWC amounts. Overall, MSWC addition can be an effective and long-lasting environmental management strategy to improve soil fertility and promote the restoration of (micro) biological function and diversity of PTE-contaminated soils.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106220"},"PeriodicalIF":4.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205455","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}

引用次数: 0

The accumulation of microbial residues decreases with time after wetland-to-cropland conversion 湿地转耕后，微生物残馀量随时间的增加而减少

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-06-03 DOI: 10.1016/j.apsoil.2025.106226

Meiling Zhao , Guodong Wang , Yuanchun Zou , Lei Qin , Liang Yang , Ming Jiang

{"title":"The accumulation of microbial residues decreases with time after wetland-to-cropland conversion","authors":"Meiling Zhao , Guodong Wang , Yuanchun Zou , Lei Qin , Liang Yang , Ming Jiang","doi":"10.1016/j.apsoil.2025.106226","DOIUrl":"10.1016/j.apsoil.2025.106226","url":null,"abstract":"<div><div>Soil organic carbon (SOC) serves as a pivotal carbon reservoir within terrestrial ecosystems, exerting profound influences on soil fertility, agricultural productivity, and global carbon cycling. Wetland reclamation alters the micro-environment of soils and influences soil biogeochemical processes, disrupts the natural balance of SOC dynamics. However, the microbial involvement in SOC dynamics in croplands converted from wetlands across different years remains unclear. To address this issue, we investigated changes in SOC and microbial residues in the tillage layer (0–25 cm) and plow pan (25–35 cm) of wetlands converted to farmlands over six decades (0, 20, 30, 40, 50, 60 years) in northeast China. The results revealed that the SOC content decreased from 3.97 to 0.95 % over the 60-year cultivation period. The content of microbial biomass and residues was higher in the tillage layer than in the plow pan. In the tillage layer, microbial biomass generally decreased, whereas in the plow pan, it initially increased and then decreased with increasing duration of farming. The content of the fungal and bacterial residues initially increased and subsequently decreased at all depths with increasing duration of farming. The accumulation efficiency of microbial residues in soil showed the same trend. Structural equation modeling revealed that both the duration of farming and soil layer influenced soil physicochemical properties and the free iron content. These factors in turn directly affected microbial community composition and residues, while indirectly affecting SOC. Our findings provide a theoretical foundation for assessing carbon storage capacity and persistence following wetland cultivation.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106226"},"PeriodicalIF":4.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205456","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}

引用次数: 0

Effects of soil fauna on soil carbon accumulation under organic amendments: Insights from community composition and energy flux 有机修正下土壤动物对土壤碳积累的影响：来自群落组成和能量通量的启示

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-06-02 DOI: 10.1016/j.apsoil.2025.106221

Yang Bai , Yingbin Li , Xiaofang Du , Yixin Sun , Zhenxin Xu , Wenju Liang , Qi Li

{"title":"Effects of soil fauna on soil carbon accumulation under organic amendments: Insights from community composition and energy flux","authors":"Yang Bai , Yingbin Li , Xiaofang Du , Yixin Sun , Zhenxin Xu , Wenju Liang , Qi Li","doi":"10.1016/j.apsoil.2025.106221","DOIUrl":"10.1016/j.apsoil.2025.106221","url":null,"abstract":"<div><div>Soil fauna plays an indispensable role in soil organic carbon (SOC) cycling. Organic amendments are anticipated to enrich the soil with organic carbon and enhance the soil faunal abundance. However, the specific mechanisms by which soil fauna regulates carbon accumulation under these organic amendments are not fully elucidated. We carried out a six-year field experiment including no fertilizer application, conventional chemical fertilizer, and partial substitutions of urea with maize straw and cattle manure. We aimed to explore the connections between soil faunal community and carbon fractions under organic amendments. Our findings indicated that organic amendments elevated SOC and mineral-associated organic carbon (MAOC) by 16.7 %–25.9 % and 7.5 %–10.1 %, respectively, relative to the unfertilized control. Fertilization regimes modified the composition of arthropod and nematode communities. Notably, Prostigmata and Oribatida positively correlated with microbial necromass carbon, while nematode community composition was positively associated with neutral sugar accumulation. Under manure amendment, the concentration of neutral sugar positively correlated with the ratio of MAOC to particulate organic carbon (POC). Moreover, compared with conventional chemical fertilizer, straw amendment increased total nematode biomass by 71.4 % and energy flux by 67.3 %, enhancing plant-derived carbon formation through root energy pathways. In contrast, manure amendment increased fungivorous nematodes' relative carbon flux to 18.6 %, showing preferential fungal-mediated carbon channeling. These differential effects underscore the significance of integrating faunal-mediated processes into strategies for managing soil carbon dynamics and developing sustainable agroecosystem fertilization practices.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106221"},"PeriodicalIF":4.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190022","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}

引用次数: 0

Understanding the role of soil microbiota and its' interplay with environment to ensure sustainable development for the future generations 了解土壤微生物群的作用及其与环境的相互作用，确保子孙后代的可持续发展

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-05-31 DOI: 10.1016/j.apsoil.2025.106217

Imtiaz Ahammed , Rittick Mondal , Jannatun Nesa , Amit Kumar Mandal , Abdul Sadat

{"title":"Understanding the role of soil microbiota and its' interplay with environment to ensure sustainable development for the future generations","authors":"Imtiaz Ahammed , Rittick Mondal , Jannatun Nesa , Amit Kumar Mandal , Abdul Sadat","doi":"10.1016/j.apsoil.2025.106217","DOIUrl":"10.1016/j.apsoil.2025.106217","url":null,"abstract":"<div><div>The soil microbiota refers to the diverse group of microorganisms that reside in the soil ecosystem, such as bacteria, actinobacteria, archaea, fungi, protozoa, algae, viruses and nematodes. These microorganisms are essential in supporting plant growth by aiding in the mineralization, solubilization, fixation, and mobilization of nutrients. They also produce and release hormones, siderophores, and antibiotics that promote plant growth, which is facilitated by the interaction between the plant's root system and the soil microorganisms. This mutualistic relationship between the host plant and microbiota is crucial in promoting the bio-geochemical nutrient cycle with minimal chemical inputs and ecological disturbance, thus supporting sustainable development. Nevertheless, the soil microbial communities play a vital role in maintaining a steady state nutrient cycle by adapting and shifting between different taxa involving both genetic and behavioral aspects in response to changing environmental conditions. Therefore, these microbes can be used as biofertilizers and inoculated with the native soil microbiota to enhance plant production despite environmental stress. Numerous studies were conducted on sustainable agriculture arguing its necessity, and to evaluate how this goal may be achieved. Present review addresses possible impediments that restrict the implementation of sustainable agriculture in practice and how soil-microbiota interplay helps in modelling it.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106217"},"PeriodicalIF":4.8,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185733","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}

引用次数: 0

Influence of the triazole fungicide difenoconazole on soil microbial communities, antibiotic resistance genes, and pathogens 三唑类杀菌剂异虫康唑对土壤微生物群落、抗生素抗性基因和病原体的影响

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-05-30 DOI: 10.1016/j.apsoil.2025.106210

Baihui Shi , Wenjie Zhang , Lanjun Wang , Changrui Liu , Junpu Wang , Bo Cheng , Lusheng Zhu , Young Mo Kim , Jinhua Wang

{"title":"Influence of the triazole fungicide difenoconazole on soil microbial communities, antibiotic resistance genes, and pathogens","authors":"Baihui Shi , Wenjie Zhang , Lanjun Wang , Changrui Liu , Junpu Wang , Bo Cheng , Lusheng Zhu , Young Mo Kim , Jinhua Wang","doi":"10.1016/j.apsoil.2025.106210","DOIUrl":"10.1016/j.apsoil.2025.106210","url":null,"abstract":"<div><div>Difenoconazole (DFC) is a typical triazole fungicide (one of the main fungicides in intensive agriculture), frequently detected in agricultural soils. However, the comprehensive effect of DFC on the soil ecological environment remains limited. In this study, we used metagenomic sequencing to determine the functional changes in the soil microbial communities (bacteria and fungi), antibiotic-resistance genes (ARGs), and pathogens after exposure to DFC (0.5, 1, and 5 mg kg<sup>−1</sup>) for 0, 28, and 42 d. DFC exposure perturbed soil bacteria and fungi microecology stability. DFC further stimulated the bacterial genera such as <em>Sphingomicrobium</em>, <em>Nocardioides</em>, <em>Streptomyces</em>, <em>Aspergillus</em>, and <em>Penicillium</em> known for degrading complex compounds at 42 d. Network analysis indicated that medium to high concentrations (1 and 5 mg kg<sup>−1</sup>) of DFC elevated the proportion of positive correlations (14.35 % and 2.27 %) among dominant fungal species, fostering interspecies cooperative interactions. DFC enriched the dominant microbial community involved in nutrient cycling in the soil, impacting functional genes' abundance related to these cycles (including methanogenesis, nitrification, denitrification, and nitrogen fixation). Furthermore, DFC exposure heightened the risk associated with the spread of ARGs at 42 d. The co-occurrence network revealed certain shared microorganisms, such as <em>Bacteroidota</em> and <em>Actinobacteriota</em>, as potential hosts of ARGs. The co-occurrence of potential pathogens and ARGs revealed an increased risk of pathogenicity and antibiotic resistance in potential pathogens. These findings highlight the previously overlooked environmental risks DFC poses to the soil microbial community, ARGs, and pathogens in soil ecosystems.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106210"},"PeriodicalIF":4.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177451","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}

引用次数: 0

Negative effects of pristine and UV-aged nanoplastics on lettuce growth and soil microbes 原始和紫外线老化纳米塑料对生菜生长和土壤微生物的负面影响

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-05-30 DOI: 10.1016/j.apsoil.2025.106211

Minling Gao , Hongchang Peng , Shaojie Yang , Ziqing Wang , Zhengzhen Xiao , Weiwen Qiu , Zhengguo Song

{"title":"Negative effects of pristine and UV-aged nanoplastics on lettuce growth and soil microbes","authors":"Minling Gao , Hongchang Peng , Shaojie Yang , Ziqing Wang , Zhengzhen Xiao , Weiwen Qiu , Zhengguo Song","doi":"10.1016/j.apsoil.2025.106211","DOIUrl":"10.1016/j.apsoil.2025.106211","url":null,"abstract":"<div><div>Investigating the toxicological effects of aged nanoplastics (NPs) in soil is critical, as UV irradiation may exacerbate their ecological toxicity by altering surface properties and enhancing interactions with the soil. Here, we investigated the effects of different concentrations of pristine and aged polystyrene (PS) and carboxyl-polystyrene (PSC) NPs on lettuce and soil properties. Both pristine and aged NPs inhibited pigment synthesis and lettuce growth. The maximum growth inhibition rates of leaf (root) biomass were 10.2 % (23.4 %) and 32.7 % (45.3 %) for pristine PS and PSC (50 mg·L<sup>−1</sup>) and 26.7 % (35.9 %) and 43.1 % (57.8 %) for aged PS and PSC (50 mg·L<sup>−1</sup>), respectively. NPs induced excessive reactive oxygen species (ROS) production in the leaves and roots, antioxidant defense mechanisms, and oxidative damage, which was more pronounced with aged NPs. ROS accumulation gradually increased with aging time and concentration of NPs, which inhibited photosynthesis and decreased biomass. At the same aging duration, exposure to either pristine or aged NPs significantly reduced soil pH. Compared to the control, neither pristine nor aged NPs altered the composition of dissolved organic matter, whereas aged PSC induced a significant increase in the intensity of soluble microbial byproducts; this was attributed to differences in soil acidity and alkalinity. Low concentrations of pristine and aged NPs increased the Chao 1 index in soils, exhibiting “hormesis,” and altered relative microbial abundances. Pristine and aged PS/PSCs promoted microbial oxidative phosphorylation, carbon fixation pathways in prokaryotes, and the tricarboxylic acid cycle. The results provide critical insights into the impacts of NPs on plant and soil microbial growth.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106211"},"PeriodicalIF":4.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167850","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}

引用次数: 0

Influence of soil phosphorus levels on rhizosphere fungal communities in managed subtropical perennial Bahiagrass 土壤磷水平对经管理的亚热带多年生百喜草根际真菌群落的影响

IF 4.8 2区农林科学

Applied Soil Ecology Pub Date : 2025-05-29 DOI: 10.1016/j.apsoil.2025.106209

Ran Zhi , Daniel F. Petticord , Yuxi Guo , Hui-Ling Liao , Elizabeth H. Boughton , Jed P. Sparks , Jiangxiao Qiu

{"title":"Influence of soil phosphorus levels on rhizosphere fungal communities in managed subtropical perennial Bahiagrass","authors":"Ran Zhi , Daniel F. Petticord , Yuxi Guo , Hui-Ling Liao , Elizabeth H. Boughton , Jed P. Sparks , Jiangxiao Qiu","doi":"10.1016/j.apsoil.2025.106209","DOIUrl":"10.1016/j.apsoil.2025.106209","url":null,"abstract":"<div><div>Soil phosphorus (P) is a critical limiting nutrient influencing primary productivity, particularly in agricultural systems. Rhizosphere fungal communities play an important role in nutrient cycling, especially P cycling, and therefore are presumed to respond strongly to soil P levels. This study investigates the influence of soil available P levels on rhizosphere fungal communities of perennial Bahiagrass – one of the most dominant forage grass species in the subtropical climate, emphasizing the relationship between soil P and fungal communities and functional potentials. Our results showed that soil Mehlich-1 P (M-1 P) was the most significant soil factor influencing fungal community composition (beta diversity), followed by total P and the N/P ratio (<em>P</em> < 0.05). Additionally, the soil N/P ratio emerged as the strongest and most consistent predictor of fungal alpha diversity at both taxonomic and functional levels. At the functional group level, N/P ratio, pH, and plant P positively influenced fungal functional richness, whereas soil moisture showed a moderate negative relationship. The relative abundance shifts in fungal functional groups, such as decline in Dung Saprotrophs with increasing M1-P levels, indicate potential changes in ecological functions associated with soil P availability. Understanding these relationships can inform management strategies that promote a resilient fungal community and support Bahiagrass-dominated agricultural production systems through best management practices.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106209"},"PeriodicalIF":4.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167848","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}

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