Applied Soil Ecology最新文献

{"title":"Regulation of soil phosphorus availability in alpine meadows: Insights from phosphate-mobilising bacteria","authors":"Yulin Pu ,&nbsp;Shanxin Lang ,&nbsp;Yali Li ,&nbsp;Ting Li ,&nbsp;Shirong Zhang ,&nbsp;Xiaoxun Xu ,&nbsp;Dagang Yuan ,&nbsp;Yongxia Jia ,&nbsp;Guiying Wang ,&nbsp;Bing Li","doi":"10.1016/j.apsoil.2024.105730","DOIUrl":"10.1016/j.apsoil.2024.105730","url":null,"abstract":"<div><div>The populations, activity, and community of phosphate-mobilising bacteria (PMB) affect phosphorus (P) availability via the solubilisation of PMB metabolites in grassland soils. However, PMB variations and their regulation mechanism on soil P availability across degraded meadows are not fully understood. We conducted the dynamic of bioavailable P, phosphatase activity, and PMB properties using field positioning monitoring, quantitative PCR, and high-throughput sequencing technology across different degraded meadow soils in the Zoige Basin, China. Compared with the non-degraded meadow (NDM), the content of soil Olsen and resin P in degraded meadows decreased by 14.7–58.1 % and 34.8–60.1 % respectively, and the abundance of soil PMB with the phoD and pqqC genes declined by 5.6–75.6 % and 6.5–77.4 %, respectively, at most plant growing seasons. In general, soil phosphatase activity in degraded meadows was lower than that in the NDM, while meadow degradation enhanced the diversity of soil PMB. Decreases in the content water and nutrient altered the PMB community composition in degraded meadow soils, which commonly showed that the relative abundance of copiotrophic PMB (e.g. Burkholderiacea with the pqqC gene) decreased, whereas that of oligotrophic PMB (e.g. Bradyrhizobiaceae with the phoD gene) increased. The lower soil bioavailable P was mainly driven by a decrease in the abundance of organic PMB and phosphatase activity under meadow degradation. These results provide new insights into the regulation of soil P availability through stimulating PMB mineralisation on organic P compounds to restore degraded meadows.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105730"},"PeriodicalIF":4.8,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578875","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":"Meadow degradation reduces microbial β diversity and network complexity while enhancing network stability","authors":"Yuping Wu ,&nbsp;Ansheng Liang ,&nbsp;Mingjun Ding ,&nbsp;Hua Zhang ,&nbsp;Huan Xu ,&nbsp;Yueju Zhang","doi":"10.1016/j.apsoil.2024.105733","DOIUrl":"10.1016/j.apsoil.2024.105733","url":null,"abstract":"<div><div>Continuing meadow degradation under the dual impacts of climate change and human activities has altered microbially-mediated biogeochemical cycles. However, microbial diversity and network stability in response to meadow degradation and their relationships to environmental variables remain insufficiently understood. This study focused on alpine meadows with varying degrees of degradation in the hinterland of the Qinghai-Tibetan Plateau. It analyzed the soil microbial diversity (α and β diversity) and ecological network topology characteristics under the degradation of alpine meadows. Furthermore, the extent to which these factors elucidate the environmental changes observed during degradation was explored. The results demonstrated that: (1) the α diversity of soil microbial under degradation of alpine meadows exhibited an increasing trend, although not significantly. The β diversity (community dissimilarity) exhibited a significant decreasing trend. These indicated that meadow degradation resulted in microbial homogenization intra- and inter-community. In the light degradation stage, the β diversity of bacteria and fungi significantly increased with geographic and environmental distance rise. Only bacterial β diversity significantly increased with geographical distance in the moderate degradation stage and environmental distance in the heavy degradation stage, respectively. This indicated that meadow degradation possibly altered microbial assembly, especially for fungi. (2) The degree of soil bacterial nodes exhibited a significant decreasing trend with degradation and fungal eigencentrality demonstrated a significant decreasing trend. After removing the identical nodes, the natural connectivity of the fungal network exhibited a significant decreasing trend with degradation. This suggested that the stability of the soil microbial network increased while the network complexity decreased under meadow degradation. These changes possibly marked the irreversible course of alpine meadow degradation. (3) The Mantel test indicated that bacterial diversity and network topological features were more strongly associated with environmental factors than those of fungi. Akaike information criterion (AIC) values and the upset matrix plots of variance partitioning based on Redundancy analysis (RDA) indicated that higher rates of soil factors, such as soil pH, organic carbon (SOC) content, and total potassium (TK), elucidated changes in microbial community diversity and network topological features. This study highlights the importance of soil microorganisms for ecological stability and the role of microorganisms should be emphasized in future efforts to restore alpine grasslands.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105733"},"PeriodicalIF":4.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572842","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":"Litter, root, and mycorrhiza manipulations and seasonal effects on soil physicochemical properties and microbial communities in a subtropical coniferous and broad-leaved mixed forest","authors":"Liqin Zhu,&nbsp;Rongzhen Huang,&nbsp;Hongzhi Guan,&nbsp;Jinping Wang,&nbsp;Zhijun Huang,&nbsp;Huanying Fang,&nbsp;Xianhua Zou,&nbsp;Jingkai Li,&nbsp;Pingyu Liu","doi":"10.1016/j.apsoil.2024.105721","DOIUrl":"10.1016/j.apsoil.2024.105721","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Organic inputs from aboveground litter and underground roots are an important factor affecting nutrient cycling in forest ecosystems. However, we still know little about the seasonal effects of the interaction between aboveground and underground organic inputs on soil organic carbon, nutrients and microorganisms after vegetation restoration in degraded red soil. Therefore, we focused on a mixed forest dominated by &lt;em&gt;Schima superba&lt;/em&gt; and &lt;em&gt;Pinus massoniana&lt;/em&gt; that had been restored for 27 years on eroded and degraded red soil in a subtropical region. Five treatments were set as follows: retaining aboveground litter + retaining root + retaining mycorrhizae (LRM, control treatment), doubling aboveground litter + retaining root + retaining mycorrhizae (DLRM), removing aboveground litter + retaining root + retaining mycorrhizae (NRM), removing aboveground litter + removing root + retaining mycorrhizae (NNM), and removing aboveground litter + removing root + removing mycorrhizae (NNN). After more than three years of treatment, DLRM, NRM, NNM, and NNN treatments reduced soil moisture content by 32.0–56.8 % in the rainy season compared with the LRM treatment. Soil total nitrogen and ammonium nitrogen concentrations were the highest in the DLRM treatment. Soil ammonium concentration and pH were higher in the rainy season than those in the dry season, while soil nitrate concentration was higher in the dry season. Soil available phosphorus concentration in the dry season decreased by 64.5 % in the DLRM treatment, while they were 2.0–10.7 times of those in the LRM, NRM, NNM, and NNN treatments compared to the rainy season. Soil microbial communities were dominated by bacteria across treatments, accounting for 74.0–75.5 % of the total phospholipid fatty acid (PLFA) of soil microbes, and there was no significant difference among treatments. Except for fungi, the total PLFAs of soil microorganisms and the PLFA content of each microbial taxon were higher in the dry season than those in the rainy season. The F/B value in the rainy season was higher than that in the dry season. The PLFA contents of gram-positive bacteria and actinomyces in the DLRM and NRM treatments were higher than those in the NNM treatment, and PLFA contents of both in the dry season were 1.5 and 1.6 times of those in the rainy season, respectively. Soil total phosphorus and pH had the highest contribution to soil microbial community changes in rainy and dry seasons, respectively. Comprehensive evaluation showed that double aboveground litter addition was more conducive to soil quality improvement. In conclusion, litter, roots and mycorrhiza manipulations affected the PLFA contents of soil microorganisms through the regulation of soil physicochemical properties, rather than the proportions of each microbial taxon in the total PLFAs, which was related to the season. The results can provide a theoretical basis for soil quality improvement as driven by soil microorganisms durin","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105721"},"PeriodicalIF":4.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572840","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":"Nitrogen addition alleviates the negative effects of reduction in precipitation on soil multifunctionality in a typical steppe","authors":"Yan Shen ,&nbsp;Yonghong Luo ,&nbsp;Lan Du ,&nbsp;Ru Tian ,&nbsp;Wenqian Shao ,&nbsp;Jiatao Zhang ,&nbsp;Na Li ,&nbsp;Jinbao Zhang ,&nbsp;Shan Wang ,&nbsp;Mohsin Mahmood ,&nbsp;Zhuwen Xu","doi":"10.1016/j.apsoil.2024.105727","DOIUrl":"10.1016/j.apsoil.2024.105727","url":null,"abstract":"<div><div>The increasing frequency of drought events and nitrogen deposition have fundamentally changed soil microbial functions in terrestrial ecosystems. However, most studies have mainly concentrated on the impact of a single environmental factor on ecosystem functions; how drought and nitrogen enrichment interactively affect soil multifunctionality remains largely unknown. In this study, the effects of different drought scenarios [intense drought (ID), chronic drought (CD), and reduced rainfall frequency (RF)] and nitrogen addition on soil microbial biomass, and soil multifunctionality (determined using soil enzyme activity) were examined in the fourth year of a field manipulative experiment conducted in a typical steppe in northern China. The results demonstrated that both ID and CD significantly reduced soil multifunctionality, microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN). The CD treatment also decreased the ratio of MBC to MBN, while RF had less impacts on soil multifunctionality and the biomass of soil microbes. In contrast, nitrogen addition enhanced soil multifunctionality, MBC and MBN. Structural equation modeling analysis demonstrated that drought decreased soil multifunctionality directly and indirectly by reducing MBN and soil water content, whereas nitrogen addition increased soil multifunctionality mainly by increasing MBN and soil inorganic nitrogen. This study provides the first experimental evidence of the opposing impacts of reduction in precipitation and nitrogen enrichment on soil microbial biomass and soil multifunctionality in a semiarid typical steppe, and suggests that nitrogen fertilization could be an effective measure to alleviate the negative effects of climate drought on soil functions in nitrogen- and water-limited grassland ecosystems.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105727"},"PeriodicalIF":4.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572841","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":"Plateau pika disturbance indirectly controls the temperature sensitivity of microbial respiration through soil organic carbon quality in alpine grasslands","authors":"Chong Liang Luo ,&nbsp;Hai Xia Duan ,&nbsp;Hong Jin Liu ,&nbsp;Jia Peng Qu ,&nbsp;Shi Xiao Xu ,&nbsp;Xin Quan Zhao","doi":"10.1016/j.apsoil.2024.105724","DOIUrl":"10.1016/j.apsoil.2024.105724","url":null,"abstract":"<div><div>Understanding the spatial variations in the temperature sensitivity (<em>Q</em>₁₀) of soil microbial respiration is crucial for predicting the carbon cycle-climate feedbacks in the context of global warming. However, the response of <em>Q</em>₁₀ to soil heterogeneity, particularly that caused by bioturbation, and the underlying regulatory mechanisms remain poorly understood. In this study, a paired design experiment was conducted across 9 sites with varying disturbance gradients within alpine grasslands to compare plant and soil properties, soil respiration, and <em>Q</em>₁₀ values between pika-disturbed and pika-undisturbed areas. To accurately assess the levels of pika disturbance, we developed a multivariate index by applying principal component analysis to reduce the dimensionality of variables related to pika disturbance. Our results showed that low disturbance exhibited a significant positive effect on plant species richness and soil microbial respiration (<em>R</em>_H). Conversely, high disturbance significantly reduced plant vegetation cover, aboveground biomass, diversity, as well as soil water content, bulk density, pH, SOC, the ratio of SOC to total nitrogen, microbial biomass carbon and nitrogen, <em>R</em>_H, and SOC quality. The <em>Q</em>₁₀ value increased significantly with escalating pika disturbance gradients and displayed a rising trend from meadow to steppe grassland. Plateau pika disturbance indirectly influenced <em>Q</em>₁₀ through SOC quality in pika-disturbed grasslands, whereas SOC quality regulated <em>Q</em>₁₀ via soil microbial respiration in pika-undisturbed areas. Overall, our findings emphasize the importance of considering the impacts of pika disturbance, soil substrate quality and availability on the <em>Q</em>₁₀ in degraded alpine grasslands under future warming scenarios.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105724"},"PeriodicalIF":4.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572843","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":"Microbially mediated mechanisms underlie the increased soil N2O emissions under nitrogen fertilization in purple soil","authors":"Yuanyuan Liu ,&nbsp;Yuanxue Chen ,&nbsp;Pengpeng Duan ,&nbsp;Huabin Lu ,&nbsp;Yujing Gao ,&nbsp;Kaiwei Xu","doi":"10.1016/j.apsoil.2024.105725","DOIUrl":"10.1016/j.apsoil.2024.105725","url":null,"abstract":"<div><div>Soil nitrous oxide (N₂O) originates from multiple processes, and nitrogen (N) fertilizer often increases N₂O emissions. However, the dominant processes, the contributions of major microbial taxa, and the potential mechanisms of N₂O production in purple soil with long-term N application are unclear. We conducted a 2-year field fertilization experiment, utilizing metagenomic techniques and selective inhibition tests, to investigate the potential mechanisms of N₂O emissions under 0, 180, and 360 kg N ha⁻¹ yr⁻¹ fertilization levels. In this study, N fertilizer increased soil N₂O emissions and emission factor (EF), with the range of cumulative N₂O emissions and EF being 0.13–3.47 kg N₂O-N ha⁻¹ yr⁻¹ and 0.47–0.91 %, respectively. Meanwhile, indoor culture tests revealed that N fertilizer mainly promoted N₂O production driven by ammonia-oxidizing bacteria (AOB) and the denitrification process, but decreased N₂O production driven by ammonia-oxidizing archaea (AOA) and complete ammonia oxidizers (comammox). By influencing soil NH₄⁺-N, NO₂⁻-N, AOB, <em>Nitrosospira</em>, and <em>nosZ</em> abundance, long-term N application indirectly impacted N₂O emissions. In addition, the accumulated NO₂⁻-N concentration and the increased AOB, <em>nirK</em>, <em>norB</em>, and <em>Nitrosospira</em> abundance following N application suggested that nitrifier denitrification (ND) may also contribute to the formation of N₂O. These findings suggest that AOB-driven nitrification and/or ND may be the main mechanisms for the increased N₂O emissions after N application in purple soil.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105725"},"PeriodicalIF":4.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572839","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 bacterial and fungal microbiomes under cotton production are more sensitive to tillage and cover crops than irrigation level in a semi-arid sandy soil","authors":"Billi Jean Petermann ,&nbsp;Veronica Acosta-Martinez ,&nbsp;Haydee E. Laza ,&nbsp;Katie Lewis ,&nbsp;Joshua Steffan ,&nbsp;Lindsey C. Slaughter","doi":"10.1016/j.apsoil.2024.105711","DOIUrl":"10.1016/j.apsoil.2024.105711","url":null,"abstract":"<div><div>Land managers in semi-arid regions experience challenging climatic conditions, such as variable rainfall, extreme temperature, and prolonged droughts that are expected to intensify over the next few decades. Conservation practices implemented to reduce erosion and restore degraded soils can alter soil properties that affect the composition and function of the soil microbiome. We compared microbiome responses to long-term (&gt; 7 years) tillage and cropping management changes in bulk (0–10 cm, 10–20 cm) and root-associated soils under differing irrigation levels (High, Low) in sandy loam semi-arid soil. Cropping systems included a traditional system (Continuous tillage with continuous monocrop, CCCT) compared to two no-tillage systems that included a rye cover crop (NTCR) or a cotton/wheat rotation (NTCW). We found that microbiome structure was influenced more by management practices than irrigation across taxonomic levels. Drought-tolerant taxa also dominated bacterial communities, with no significant differences between high and low irrigation. Overall, the results from this sandy-textured soil show that tillage and vegetation management were stronger drivers of bacterial and fungal microbiome composition than irrigation level, demonstrating the efficacy of conservation management practices in semi-arid soils even under water-limited conditions.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105711"},"PeriodicalIF":4.8,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561093","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":"Biochar assisted bioremediation of soils with combined contamination of petroleum hydrocarbons and heavy metals: A review","authors":"Yuhang Chen ,&nbsp;Xinhua He ,&nbsp;Jiaqi Gao ,&nbsp;Fumei Wang ,&nbsp;Yihang Hou ,&nbsp;Qi Cai ,&nbsp;Qinglong Liu","doi":"10.1016/j.apsoil.2024.105720","DOIUrl":"10.1016/j.apsoil.2024.105720","url":null,"abstract":"<div><div>Contaminants in soils tend to be complex, with the combination of petroleum hydrocarbons (PHs) and heavy metals (HMs) being of particular concern. Bioremediation, using plants and associated microorganisms, is considered one of the most promising technologies for the removal of PHs and HMs from soils. However, the remediation efficiency of bioremediation is limited by microbial activity, plant growth behavior and soil property. Fortunately, biochar, as a cost-effective and environmentally friendly soil amendment, shows great promise in the removal of PHs and the immobilization of HMs. This study first reviewed the current situation of combined pollutions of PHs and HMs in soils. It then reviewed the application of biochar enhanced the bioremediation efficiency in the remediation of PHs-HMs co-contaminated soils, and highlighted the key genes involved in the remediation of these two pollutants and revealed the mechanism of remediation of soil co-contaminated with PHs and HMs at the molecular biology level. In addition, the current research results of biochar-assisted bioremediation were summarized and the reasonable mechanisms of biochar-assisted bioremediation of PHs-HMs contamination were illustrated. Finally, the challenges and future perspectives of biochar in enhancing bioremediation were discussed, and the remediation strategies of PHs-HMs co-contaminated soils through integration of phytoremediation, degrading microorganisms and biochar were proposed. This research has positive implications for improving soil health and managing combined contaminated soils.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105720"},"PeriodicalIF":4.8,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561094","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":"Immobilized Pseudomonas spp. for bioremediation of soils contaminated with emerging organic pollutants","authors":"Shuwang Zhang ,&nbsp;Xiangzhi Zuo ,&nbsp;Gang Wei ,&nbsp;Hefei Wang ,&nbsp;Yanzheng Gao ,&nbsp;Wanting Ling","doi":"10.1016/j.apsoil.2024.105717","DOIUrl":"10.1016/j.apsoil.2024.105717","url":null,"abstract":"<div><div>Emerging organic pollutants (EOPs) in the environment pose potential threats to ecosystems and human health. Microbial immobilization technology, combining physical and biological remediation, has garnered attention as a promising approach. This review compiles extensive literature on immobilized <em>Pseudomonas</em> spp. on carriers for EOPs treatment, including the <em>Pseudomonas</em> species and its capability to degrade EOPs, advances on microbial immobilization technology and potential applications in controlling soil pollution of EOPs. The immobilized <em>Pseudomonas</em> spp. typically exhibit higher pollutant removal efficiencies and survive for longer lifespans under harsh environmental conditions compared to free cells in the assistance of carrier materials. We conclude with a perspective on potential approaches to advance current understanding of remediation of soils contaminated with EOPs by immobilized <em>Pseudomonas</em> spp.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105717"},"PeriodicalIF":4.8,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561092","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":"Symbiotrophs dominate rhizosphere soil fungal community stability of the Cathaya argyrophylla","authors":"Zhibo Zhou,&nbsp;Peng Xie,&nbsp;Kerui Huang,&nbsp;Ping Mo,&nbsp;Aihua Deng,&nbsp;Shaogang Fan,&nbsp;Binbin Long,&nbsp;Yun Wang","doi":"10.1016/j.apsoil.2024.105719","DOIUrl":"10.1016/j.apsoil.2024.105719","url":null,"abstract":"<div><div><em>Cathaya argyrophylla</em> is an ancient and endangered pine tree unique to China and is classified as an endangered species due to climate deterioration and glacier action, etc. However, there is limited research of its rhizosphere microbiome and this information is essential for potential modifications of its habitat to allow for its continued survival. The current study collected rhizosphere soil from the two remaining <em>C. argyrophylla</em> nature reserves in Hunan Province and explored the changes in community characteristics of rhizosphere soil fungal functional groups (symbiotrophs, saprotrophs and pathotrophs). We evaluated their impact on fungal community stability using the average variation degree (AVD). The soil fungal community stability in the Chengbu area was significantly higher than that in the Chenzhou area (F = 6.34, <em>P</em> &lt; 0.05) and this was closely related to the significant differences in α- (F_Shannon = 14.85, F_Chao1 = 12.97, <em>P</em> &lt; 0.01) and β-diversity of symbiotic fungal communities. We also found that the network stability (r = 0.741, <em>P</em> &lt; 0.01) and niche breadth (r = 0.598, <em>P</em> &lt; 0.05) for symbiotrophs were significantly correlated with AVD. Additionally, <em>Russula</em> and <em>Mortierella</em> were core symbiotrophs shared in the rhizosphere soil of <em>C. argyrophylla</em>. Overall, we found that symbiotrophs were particularly important for soil fungal community stability in <em>C. argyrophylla</em> habitats and identified core taxa involved in these processes. This work provides a reference basis for policies and management measures to protect the ecosystem services of the <em>C. argyrophylla</em> community from the perspective of the soil microbiome.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"204 ","pages":"Article 105719"},"PeriodicalIF":4.8,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553217","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}