Applied Soil Ecology最新文献

{"title":"Enhanced complexity of interkingdom co-occurrence networks in blueberry rhizosphere microbial communities under soil pH stress","authors":"Jilu Che ,&nbsp;Yaqiong Wu ,&nbsp;Hao Yang ,&nbsp;Ying Chang ,&nbsp;Wenlong Wu ,&nbsp;Lianfei Lyu ,&nbsp;Xiaomin Wang ,&nbsp;Fuliang Cao ,&nbsp;Weilin Li","doi":"10.1016/j.apsoil.2025.106191","DOIUrl":"10.1016/j.apsoil.2025.106191","url":null,"abstract":"<div><div>Blueberry prefers acidic soils, resulting in its growth and development being limited by soil pH across various habitats. However, the effect of soil pH stress on the structure and interactions within its root-associated microbiome remains unclear. In this study, we investigated how varying soil pH conditions affect the composition, assembly processes, network complexity, and stability of blueberry root-associated bacterial and fungal communities. The results showed soil pH affected both bacterial and fungal community structures, with community assembly predominantly governed by stochastic processes. Notably, fungal communities were more influenced by stochastic drift than bacterial communities. Higher network complexity (nodes, edges, and average degree) and lower network stability were observed in the rhizosphere under low and high pH conditions compared to optimum pH conditions. A total of 24 and 29 keystone taxa were identified in the rhizosphere and endosphere, respectively. Collectively, these findings suggested that soil pH stress modulates the blueberry root-associated microbiome by reshaping community composition and enhancing interkingdom network complexity, though accompanied by reduced network stability. This study shed insights into changes in microbial interaction networks within the root-associated microbiome of host plants under abiotic stresses and lay essential groundwork for leveraging keystone microbes to improve plant health and resilience.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106191"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083888","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":"Common soil invertebrate (Collembola: Isotomiella minor) reduces weed biomass and alters weed communities","authors":"Ashley B. Jernigan ,&nbsp;Jenny Kao-Kniffin ,&nbsp;Sarah Pethybridge ,&nbsp;Lynn Sosnoskie ,&nbsp;Kyle Wickings","doi":"10.1016/j.apsoil.2025.106178","DOIUrl":"10.1016/j.apsoil.2025.106178","url":null,"abstract":"<div><div>Soil microarthropods affect soil ecosystems in a manner that may contribute to balancing the goals of building soil health and controlling weeds in organic agricultural systems. While soil microarthropod feeding behavior can affect plant growth, their impacts on plant communities in agricultural systems are largely unknown. A greenhouse experiment was conducted to investigate the impacts of microarthropods on weed communities. A model weed seed bank was used in each mesocosm, which included yellow foxtail (<em>Setaria pumila</em> (Poir.) Roem&amp;Schult.), giant foxtail (<em>Setaria faberi</em> Herrm.), Powell amaranth (<em>Amaranthus powellii S. Watson</em>), waterhemp (<em>Amaranthus tuberculatus</em> (Moq.) Sauer), common lambsquarters (<em>Chenopodium album</em> L.), and velvetleaf (<em>Abutilon theophrasti</em> Medik.). The study included three treatments: Collembola (<em>Isotomiella minor</em>, Schaffer 1896) abundance (none, low, high), soil microbial community (sterilized/non-sterilized), and fertilizer (presence/absence of compost). A lab experiment examining individual weed species interactions with <em>I. minor</em> was conducted to elucidate the mechanisms driving the greenhouse experiment findings. Twenty seeds of each weed species were placed on moistened germination paper in containers with varying <em>I. minor</em> abundance levels (none, low, high, very high). Seed germination was recorded after five and seven days. In the greenhouse, the presence of <em>I. minor</em> increased total weed emergence during the first two weeks, but this effect diminished after three weeks. Increasing <em>I. minor</em> abundances generally decreased weed biomass, though this effect was greater in the non-sterilized soil. In the non-sterilized soil, <em>I. minor</em> presence decreased total aboveground weed biomass production by up to 23 %. The <em>Amaranthus</em> species, Powell amaranth and waterhemp, drove this effect with a 55 % and 32 % reduction in biomass, respectively. In tandem, the <em>Amaranthus</em> species had reduced abundances in the presence of <em>I. minor</em>. <em>I. minor</em> increased yellow foxtail germination in the lab, while not affecting the other weed species. This suggests that their effects on the <em>Amaranthus</em> weeds in the greenhouse were likely not caused by direct effects on germination, but instead through nutrient cycling or root herbivory. The proposed mechanism underlying these interactions is that <em>I. minor</em> can initially stimulate germination by feeding on seed coats, but when the seed coats are minimal can damage the seedling. Our findings indicate <em>I. minor</em> could impact weed growth in a manner that affects management decisions and outcomes.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106178"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083887","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":"Long-term organic farming may prevent nitrate leaching by enhancing the abundance and co-occurrence of nasA-type nitrate assimilatory bacteria","authors":"Hui Han ,&nbsp;Juan Du ,&nbsp;Hanye Ju ,&nbsp;Chunyu Wang ,&nbsp;Yajuan Fu ,&nbsp;Shuanghu Fan ,&nbsp;Lin Wang ,&nbsp;Xiaoqiang Hou ,&nbsp;Qiuzhen Wang","doi":"10.1016/j.apsoil.2025.106197","DOIUrl":"10.1016/j.apsoil.2025.106197","url":null,"abstract":"<div><div>Organic farming is considered to have advantages in reducing soil nitrate (NO₃⁻) leaching. Previous studies have established that excessive NO₃⁻ accumulation serves as the primary driver of leaching, with NO₃⁻ assimilation process identified as one of the important reasons for underpinning such accumulation dynamics. However, the distribution and diversity of NO₃⁻ assimilating microorganisms participating in this process in the organic system is poorly understood. In the present study, the abundance and characteristics of <em>nasA</em>-type nitrate assimilatory bacteria (NAB) in organic (ORG), integrated (INT), and conventional (CON) systems set up in 2002 were investigated via quantitative real-time PCR (qPCR) and Pacbio high-throughput sequencing over two vegetable growing seasons. The abundance of <em>nasA</em> gene was significantly higher in ORG than the other two systems. Composition analysis revealed that <em>nasA</em> gene bacterial community structures shifted in ORG, and <em>Bradyrhizobium</em> (an important nitrogen fixing genus) was a dominant <em>nasA</em>-type NAB with the highest relative abundance and occurred in all samplings in ORG. Further Redundancy Analysis showed the community of <em>nasA</em>-type NAB in ORG was mainly affected by soil available phosphorus and available potassium. Our results demonstrate that higher abundance and different communities of <em>nasA</em>-type NAB in ORG may be one of the important reasons reducing soil nitrate accumulation and leaching, which could provide a theoretical basis for nitrate leaching in farmland.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106197"},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083889","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":"Responses and interactions of soil cadmium-PAHs and bacterial communities to ecosystems and seasons","authors":"Xue Li ,&nbsp;Junwei Ma ,&nbsp;Yuqian Li ,&nbsp;Yijia Li","doi":"10.1016/j.apsoil.2025.106177","DOIUrl":"10.1016/j.apsoil.2025.106177","url":null,"abstract":"<div><div>Soil health and stability of the microbiome are critical to ecosystem sustainability. However, the changes in pollutant concentrations and bacterial communities in diverse ecosystems during seasonal changes are unclear. This study attempted to address this gap by collecting and analyzing soil samples across spring, summer, and autumn in grassland (3 sites) and forest (5 sites). The study found that both grassland and forest ecosystems were polluted by cadmium (0.56–2.08 mg kg⁻¹) and polycyclic aromatic hydrocarbons (10.98–973.43 μg kg⁻¹). Soil pH, water content, and microbial community composition were mostly influenced by soil properties of different ecosystems, while seasonal changes mainly affected soil enzyme activity and microbial diversity. Cadmium and polycyclic aromatic hydrocarbons were key factors shaping microbial community structure, exhibiting notable correlations with Chloroflexi and Proteobacteria. Network diagram showed that in both ecosystems, the connections between bacteria were strongest in summer. Regardless of season, grassland networks are more complex and stable than forest ones. Ecosystem type had a greater influence on bacterial community interaction than seasonal variation. The structural equation model confirms that both ecosystem and season can directly or indirectly affect bacterial community diversity and structure. The study provides insights into the response of soil microbes in forest and grassland ecosystems, supporting soil health evaluation under future climate change scenarios.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106177"},"PeriodicalIF":4.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069701","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":"Bacterial and nematode communities associated with soybean-cultivated soils from two native Brazilian biomes","authors":"Felipe Martins do Rêgo Barros ,&nbsp;Roy Neilson ,&nbsp;Madeline Giles ,&nbsp;Sandra Caul ,&nbsp;Alexandre Pedrinho ,&nbsp;Claudio Marcelo Gonçalves de Oliveira ,&nbsp;Luiz Antônio da Silva ,&nbsp;Victor Lucas Vieira Prudêncio de Araújo ,&nbsp;Lucas William Mendes ,&nbsp;Fernando Dini Andreote","doi":"10.1016/j.apsoil.2025.106179","DOIUrl":"10.1016/j.apsoil.2025.106179","url":null,"abstract":"<div><div>The Cerrado and Atlantic Rainforest are two geographically distinct biomes in Brazil that have undergone significant land-use change due to soybean cultivation. These biomes differ greatly in their edaphic and climatic characteristics, driving below-ground biodiversity patterns that remain poorly understood. To address this knowledge gap, 152 soil samples were collected from major soybean-producing areas in the Brazilian Cerrado and Atlantic Rainforest biomes between January and May 2021. This study explored the effect of soybean cultivation on nematode and bacterial communities across both biomes using 18S rRNA and 16S rRNA amplicon sequencing. The results revealed that bacterial diversity did not differ between the biomes, indicating possible biotic homogenization driven by agricultural practices. However, bacterial community composition varied, with the Cerrado having a higher relative abundance of Bacillota, whereas the Atlantic Rainforest had a greater relative abundance of Acidobacteriota. Redundancy analysis (RDA) indicated that bacterial communities were primarily influenced by soil clay content, regardless of biome. In contrast, nematode community structure had distinct patterns between the biomes, with a higher relative abundance of fungivorous nematodes associated with the Cerrado and bacterivorous and omnivorous nematodes associated with the Atlantic Rainforest. RDA also revealed that nematode communities were strongly influenced by mean air temperature, which differed significantly between the biomes. Network analyses highlighted greater complexity in the Cerrado, with both positive and negative correlations between bacteria and nematode trophic groups. In contrast, in the Atlantic Rainforest interactions were limited to negative correlations. This is the first study to consider both the bacterial and nematode communities of Brazilian soils at national scale.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106179"},"PeriodicalIF":4.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069907","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":"Ground arthropod assemblages shaped by ant nests and shrub microhabitats in Gobi Desert ecosystems","authors":"Yilin Feng ,&nbsp;Yongzhen Wang ,&nbsp;Jialong Ren ,&nbsp;Wenzhi Zhao ,&nbsp;Zhibin He ,&nbsp;Xueyong Pang ,&nbsp;Jiliang Liu","doi":"10.1016/j.apsoil.2025.106118","DOIUrl":"10.1016/j.apsoil.2025.106118","url":null,"abstract":"<div><div>Shrubs and ant nests enrich food resources, improve soil conditions, and provide refuge in desert ecosystems, thereby influencing the distribution and diversity of ground arthropods. This study investigated the diversity of macro- and microarthropods in two shrub species (<em>Reaumuria songarica</em> and <em>Nitraria sphaerocarpa</em>), as well as in the microhabitats of <em>Messor desertus</em> ant nest and bare ground using pitfall traps. The vegetation and soil factors of the four microhabitats were measured. The key results were as follows: (1) macroarthropod abundance and taxa richness were higher in the two shrub species and ant nest microhabitats compared to bare ground, with abundance in the shrub species surpassing that in the ant nests; (2) microarthropod abundance was higher in ant nests than in the two shrub species and bare ground, but diversity and evenness indices were comparatively lower; (3) dominant taxa exhibited microhabitat-specific distribution patterns. Cicadellidae and Trombidiidae were more associated with shrubs, while Entomobryoidae showed a marked preference for ant nests; and (4) variations in soil conditions driven by shrubs and ant nests had great effects on ground arthropod assemblages. Soil organic carbon explained 6.1 % of the variation in macroarthropod community, while total nitrogen and pH explained 9.5 % of the variation in microarthropod community. In conclusion, <em>M. desertus</em> ant nests and shrubs in the Gobi Desert greatly affected macro- and microarthropod assemblages by improving the soil conditions, and ant nests exhibited a stronger assembly effect on microarthropods (particularly the Entomobryidae) than the shrubs.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106118"},"PeriodicalIF":4.8,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071472","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":"Mechanisms of lime-induced N2O mitigation in acidic soils: A meta-analysis of microbial activity and substrate dynamics","authors":"Kiya Adare Tadesse ,&nbsp;Tianfu Han ,&nbsp;Zhe Shen ,&nbsp;Nano Alemu Daba ,&nbsp;Jiwen Li ,&nbsp;Muhammad Numan Khan ,&nbsp;Asad Shah ,&nbsp;Huimin Zhang","doi":"10.1016/j.apsoil.2025.106175","DOIUrl":"10.1016/j.apsoil.2025.106175","url":null,"abstract":"<div><div>Previous studies reported a reduction in N₂O emissions following lime application. However, the mechanisms underlying N₂O reduction under different soil acidifications are not clear and require further investigation. As a result, it is imperative to gain insights into how lime application affects N₂O emissions and associated microbial activities under varying soil acidification and other factors. Only studies obtained from the agroecosystems were considered for the current meta-analysis. Accordingly, this meta-analysis was conducted with 684, 141, 149, and 94 paired observations for the response variables of N₂O emissions, archaeal <em>amoA</em> gene abundance, bacterial <em>amoA</em> gene abundance, and <em>nosZ</em> gene abundance, respectively, obtained from 39 peer-reviewed studies. The current meta-analysis findings indicated that the lime application reduced soil N₂O emissions by 46.63 % and raised soil pH by 27.63 % across all paired observations compared to control. Overall, lime application also increased the abundance of bacterial <em>amoA</em> and <em>nosZ</em> genes by 101.17 % and 49.63 %, respectively, while decreasing the abundance of archaeal <em>amoA</em> by 6.39 %. Our structural equation modeling (SEM) suggested that the differences in the reduction of N₂O emission magnitudes under different lime rates are due to differences in the degree of soil pH manipulation. Lime application rate was identified as the primary factor influencing the response of soil N₂O emissions to lime, followed by soil pH. Our results from SEM indicated that the main drivers of the variable responses in soil N₂O emissions to lime application under different soil acidifications are the variable responses of N₂O-associated microbial activities and substrate availability. The greater reduction in N₂O emissions under neutral soil conditions, compared to acidic conditions, is primarily attributed to a pH-driven shift in microbial activity, evidenced by a larger increase in <em>nosZ</em> gene abundance and a decrease in bacterial <em>amoA</em> gene abundance.</div><div>Grain yields of wheat, rice, and maize increased by 9.42 %, 11.40 %, and 62.42 %, respectively, following lime application compared to the control. Based on our findings, we concluded that applying lime to acidic soils is a suitable option for reducing soil N₂O emissions by affecting the activity of associated microbial functional genes and substrate availability in agricultural ecosystems.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106175"},"PeriodicalIF":4.8,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946886","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":"Combining rape biochar with hydroxyapatite: An approach to reduce Cd availability and uptake in maize while enhancing bacterial abundance in alkaline contaminated soil","authors":"Meili Sun ,&nbsp;Yihao Wang ,&nbsp;Hui Han ,&nbsp;Ya Feng ,&nbsp;Jinwei Yan ,&nbsp;Aminu Darma ,&nbsp;Jianjun Yang","doi":"10.1016/j.apsoil.2025.106174","DOIUrl":"10.1016/j.apsoil.2025.106174","url":null,"abstract":"<div><div>Safe maize cultivation is at risk due to increasing cadmium (Cd) contamination in alkaline soils, requiring more research on efficient, soil-friendly biochar passivators suitable for specific conditions. Accordingly, a pot experiment was undertaken to investigate the implication of rape straw biochar at 1 % (LB) and 4 % (HB) concentrations, along with the 1 % compounded passivator where the biochar to hydroxyapatite (HAP) ratio is 3:1, on alkaline-contaminated soil. The bioavailable Cd concentrations in the rhizosphere decreased by 12.35 % (HB) and 5.19 % (LB-H), resulting in a corresponding decrease in Cd uptake by maize roots by 43.5 % (HB) and 22.4 % (LB-H). These findings are associated with elevated pH, which decreased Cd's bioavailability in the rhizosphere soil, consequently decreasing Cd enrichment in maize roots. The 16S rRNA sequencing revealed that LB-H has a beneficial effect on soil health, broadening the proliferation of plant growth-promoting bacteria, <em>Actinobacteria</em> (0.45 %), <em>Blastococcus</em> (0.05–0.10 %), and phosphate-solubilizing bacteria, <em>Bacillus</em> (0.045–0.085 %) in the rhizosphere soil. Redundancy and correlation analyses demonstrated that pH and bacterial composition are significant variables driving the immobilization of Cd in the soil. This study underscores the potential of utilizing low-concentration rape biochar (1 %) combined with HAP as an eco-friendly remediation agent to safeguard the production of maize on Cd-contaminated alkaline soil.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106174"},"PeriodicalIF":4.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943198","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":"Aggregate-scale carbon dynamics in urban mediterranean soils: Insights from enzyme activities and organic matter distribution","authors":"Teresa Alía,&nbsp;Rubén Abad-Calderón,&nbsp;José Ramón Quintana,&nbsp;Miguel Ángel Casermeiro,&nbsp;Javier Fernández-Sanjulián,&nbsp;Sergio González-Ubierna","doi":"10.1016/j.apsoil.2025.106176","DOIUrl":"10.1016/j.apsoil.2025.106176","url":null,"abstract":"<div><div>Urbanization is expected to increase, with 68 % of the world's population living in cities by 2050. Urban soils, essential for ecosystem services such as carbon storage and water regulation, are being degraded by human activities, altering their physical, chemical and biological properties. This study investigates the distribution of soil organic carbon and biological activity across urban soil aggregate sizes, hypothesising that aggregate-specific organic matter drives biogeochemical cycling. Soil samples from 12 sites within an urban park in Madrid were analysed, distinguishing between the following aggregate sizes: micro (&lt;0.25 mm), meso (0.25–1 mm), macro (1–2 mm) and mega (&gt;2 mm). The distribution of organic carbon forms (labile and recalcitrant) and enzyme activities related to nutrient cycling (C, N, P and S) were studied. The soils showed a high variability in physical and chemical properties, with low statistical differences in soil organic carbon forms and enzyme activities. Mega-aggregates were the most abundant and had a higher carbon content, but did not show significant differences in carbon fractions or enzyme activities compared to smaller aggregates. Micro- and meso-aggregates showed stronger correlations between soil carbon and enzyme activities and were more closely related to bulk soil data. The results suggest that urban soils exhibit carbon cycling dynamics closer to organically amended soils than natural soils, influenced by nutrient enrichment, contaminants and microbial activity. This research provides a theoretical basis for improving carbon sequestration and biogeochemical balance in urban soils.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106176"},"PeriodicalIF":4.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943199","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":"Full-length sequencing revealed microbial species indicative for growth stage-dependent N2O fluxes in potato cropping on a sandy soil in Germany","authors":"Laura Charlotte Storch ,&nbsp;Katharina Schulz ,&nbsp;Eduardo Cerull ,&nbsp;Annette Prochnow ,&nbsp;Liliane Ruess ,&nbsp;Benjamin Trost ,&nbsp;Susanne Theuerl","doi":"10.1016/j.apsoil.2025.106120","DOIUrl":"10.1016/j.apsoil.2025.106120","url":null,"abstract":"<div><div>Soil microbial communities play a crucial role in agroecosystems, inter alia for the release of nitrous oxide (N₂O). Their structure and hence their functionality is affected by agricultural practices like fertilization as well as by crop growth stages. The aim of this study was to identify potential indicative microbial species which are related to the N₂O formation induced by different N fertilization types (broadcasted or dissolved in irrigation water).</div><div>While the general taxonomic composition resembled previously reported microbial community structures in potato cropping, no fertilizer-induced effects, but a time-related clustering of the microbial community structure related to the different development stages of potato plants was found. Out of 5.770 detected species, 64 species were found with a significant positive correlation to the measured N₂O fluxes. In this regard, the family Sphingomonadaceae seem to play a crucial role for the N₂O release while certain species of the genera <em>Altererythrobacter</em> (two out of 26), <em>Novosphingobium</em> (four out of 83), and <em>Sphingomonas</em> (six out of 41) seem to be most indicative. Additionally, four species belonging to the genus <em>Novosphingobium</em>, including the two known species <em>Novosphingobium flavum</em> and <em>Novosphingobium tardaugens</em> as well as five species affiliated to the genus of <em>Rhodanobacter</em> (including <em>Rhodanobacter spathiphylli</em>) might be involved in the process of nitrifier denitrification as recorded by a multifactorial regression model. This might indicate that the assignment of microbial community on genus level (as it has been so far) might overlook the real process involved microorganisms although this knowledge could be helpful for a targeted system control management, particularly in regard to fertilizer application and the real crop's nutrient demand.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"212 ","pages":"Article 106120"},"PeriodicalIF":4.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937439","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}