co-occurrence

共现
  • 文章类型: Journal Article
    我们评估了从青春期到成年早期的人格特质与抑郁症状和高BMI之间的关联。从2010年到2020年,我们在中国采用了具有全国代表性的队列。我们纳入了10-19岁没有抑郁症状和不健康体重状态的青少年(肥胖,超重,或薄度)在基线,并排除那些在随访时没有任何抑郁症状或BMI测量的人。我们在认真的7个维度上评估了基线人格特质,开放性,神经质,令人愉快,外向,自尊,和责任。我们还通过根据所有这7个人格特质维度的加权和生成个体层面的人格特质风险评分,评估了这7个人格特质维度的综合影响。我们在最后一次随访中使用抑郁症状和BMI的单次测量以及10年以上的重复测量来测量抑郁症状和高BMI的共同发生。我们使用多项逻辑回归模型来检验暴露-结果的关联。在基线,我们纳入了1778人(平均年龄:14.4岁;女性:853人(48.0%))。在后续行动中,我们观察到抑郁症状和高BMI每增加1-SD的神经质评分(1.95-2.38比值比)或1-SD的自尊和自觉性降低(0.63-0.80比值比;所有P值<0.05)的同时发生的风险增加;我们没有观察到开放性,令人愉快,外向,或责任和同时发生抑郁症状和高BMI的风险(所有P值>0.05)。对于人格特质的7个维度的综合影响,我们发现,在人格特征风险评分中,抑郁症状和高BMI每增加1-SD的同时发生的风险升高(OR(95%CI),最后一次随访时的单次测量:2.01,1.66至2.43;使用重复测量的轨迹分类2.30,1.55至3.42;使用重复测量的平均水平:2.27,1.93至2.67)。在中国这个国家群体中,研究发现,从青春期到成年早期,人格特质与抑郁症状和高BMI的同时发生相关.这些发现强调了根据人格特质对个体进行分层并为患有抑郁症和肥胖症的人群提供有针对性的干预措施的重要性。
    We assess the associations between personality traits and co-occurrence of depressive symptoms and high BMI from adolescence to early adulthood. We employed a nationally representative cohort in China from 2010 to 2020 year. We included adolescents aged 10-19 years without depressive symptoms and unhealthy weight status (obesity, overweight, or thinness) at baseline and excluded those without any measurement of depressive symptoms or BMI at follow-ups. We assessed baseline personality traits in 7 dimensions of conscientiousness, openness, neuroticism, agreeableness, extraversion, self-esteem, and responsibility. We also assessed the combined effects of these 7 dimensions of personality traits by generating individual-level personality trait risk scores based on the weighted sum of all these 7 dimensions of personality traits. We measured the co-occurrence of depressive symptoms and high BMI using both a single measurement of depressive symptoms and BMI at the last follow-up and repeated measurements of them over 10 years. We used the multinomial logistic regression models to examine the exposure-outcome associations. At baseline, we included 1778 individuals (mean age: 14.4 year; female: 853 (48.0%)). At follow-ups, we observed increased risk of co-occurrence of depressive symptoms and high BMI per 1-SD increase in neuroticism score (1.95-2.38 odds ratio) or 1-SD decrease in self-esteem and conscientiousness (0.63-0.80 odds ratio; all P values < 0.05); we observed no evidence of associations between openness, agreeableness, extraversion, or responsibility and the risk of co-occurrence of depressive symptoms and high BMI (all P values > 0.05). For the combined effects of the 7 dimensions of personality traits, we found an elevated risk of co-occurrence of depressive symptoms and high BMI per 1-SD increase in the personality trait risk scores (OR (95% CI), single measurement at the last follow-up: 2.01, 1.66 to 2.43; trajectory classification using the repeated measurements 2.30, 1.55 to 3.42; average level using the repeated measurements: 2.27, 1.93 to 2.67). In this national cohort in China, personality traits were found to be associated with the co-occurrence of depressive symptoms and high BMI from adolescence to early adulthood. These findings highlight the importance of stratifying individuals based on their personality traits and providing targeted interventions for those at risk of comorbid depression and obesity.
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  • 文章类型: Journal Article
    同胞物种之间的时空关联支撑了生物相互作用,结构生态组合,维持生态系统的功能和稳定。然而,种间时空关联对人类活动的复原力仍然知之甚少,特别是在山区森林中,人为影响通常很普遍。这里,我们将上下文相关的联合物种分布模型应用于喜马拉雅东部全球生物多样性热点的系统相机陷阱调查数据集,以了解山区森林中突出的人类活动如何影响陆地哺乳动物群落中的物种关联。在43,163个相机天的努力中,我们从322个站点获得了10,388个独立的17个重点物种(12个食肉动物和5个有蹄类动物)的独立检测。我们发现,与人类修饰水平较高(87%)和人类存在(83%)的栖息地相比,人类修饰水平较高(64%)和人类存在(65%)的栖息地的正相关发生率更高。我们还发现,在人类干扰水平增加时,成对相遇时间显着减少,对应于物种对之间更频繁的相遇。我们的发现表明,人类活动可以将哺乳动物推到更频繁的相遇和联想中,这可能会影响野生动物的共存和持久性,具有潜在的深远的生态后果。
    Spatial and temporal associations between sympatric species underpin biotic interactions, structure ecological assemblages, and sustain ecosystem functioning and stability. However, the resilience of interspecific spatiotemporal associations to human activity remains poorly understood, particularly in mountain forests where anthropogenic impacts are often pervasive. Here, we applied context-dependent Joint Species Distribution Models to a systematic camera-trap survey dataset from a global biodiversity hotspot in eastern Himalayas to understand how prominent human activities in mountain forests influence species associations within terrestrial mammal communities. We obtained 10,388 independent detections of 17 focal species (12 carnivores and five ungulates) from 322 stations over 43,163 camera days of effort. We identified a higher incidence of positive associations in habitats with higher levels of human modification (87%) and human presence (83%) compared to those located in habitats with lower human modification (64%) and human presence (65%) levels. We also detected a significant reduction of pairwise encounter time at increasing levels of human disturbance, corresponding to more frequent encounters between pairs of species. Our findings indicate that human activities can push mammals together into more frequent encounters and associations, which likely influences the coexistence and persistence of wildlife, with potential far-ranging ecological consequences.
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  • 文章类型: Journal Article
    抑郁症状和攻击性经常同时发生,这种共存可能会导致更严重的发育问题。然而,目前尚不清楚是否有不同的共现模式。这项研究调查了抑郁症状和攻击性的共同发生模式,并研究了它们的稳定性和人口特征。共有1010名中国青少年(50.6%为女孩;T1的平均年龄=12.54岁,SD=0.42)参加了三年(2019-2021年)的年度调查。除正常组外,还发现了三种不同的共现模式:抑郁-显性共现(13.6%),侵略主导的共现(3.2%),中度共现(6.0%)(T1)。在这些共现模式中,被归类为侵略占主导地位的青少年表现出最不稳定和最频繁的变化,而被归类为抑郁症为主的青少年表现出最大的稳定性。男孩或年轻的青少年更有可能表现出攻击性主导的共现,而女孩或年龄较大的青少年更有可能表现出抑郁症主导的并发性。研究结果表明,观察到的共同发生模式是不同的,并且以侵略或抑郁为主导,这意味着需要有针对性的干预措施。
    Depressive symptoms and aggression frequently occur together, and this co-occurrence may result in more severe developmental problems. However, it is unclear if there are distinct patterns of co-occurrence. This study investigated the co-occurrence patterns of depressive symptoms and aggression, and examined their stability and demographic characteristics. A total of 1010 Chinese adolescents (50.6% girls; mean age at T1 = 12.54 years, SD = 0.42) participated in annual surveys over three years (2019-2021). Three different patterns of co-occurrence were found except for the normal group: depression-dominant co-occurrence (13.6%), aggression-dominant co-occurrence (3.2%), and moderate co-occurrence (6.0%) (T1). In these co-occurrence patterns, adolescents classified as aggression-dominant co-occurrence exhibited the most instability and frequent changes, while adolescents classified as depression-dominant co-occurrence exhibited the most stability. Boys or younger adolescents were more likely to exhibit the aggression-dominant co-occurrence, while girls or older adolescents were more likely to exhibit the depression-dominant co-occurrence. The findings indicate that the co-occurrence patterns observed are distinct and are dominated by aggression or depression, which implies the need for targeted intervention practices.
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  • 文章类型: Journal Article
    这篇综述表明环状RNA(circircRNAs)在结核病(TB)和肺癌(LC)中的作用。专注于发病机理,诊断,和治疗。CircRNAs,一种新发现的非编码RNA,由于其稳定性,已成为各种体液中基因表达和有希望的生物标志物的关键调节剂。当前的综述讨论了circRNA生物发生,由于它们的环形成结构,突出了它们的RNase-R抗性,使它们成为有效的生物标志物。它详细说明了它们在基因调控中的作用,包括拼接,转录控制,和miRNA相互作用,以及它们对细胞过程和疾病的影响。对于LC,该综述确定了影响细胞生长的circRNA失调,运动性,和生存,以及它们作为治疗靶点和生物标志物的潜力。在TB中,它解决了circRNAs对宿主抗结核病免疫反应的影响,建议将其用作早期诊断标记。本文还探讨了TB和LC之间的相互作用,强调circRNAs是双重生物标记,以及鉴别诊断的必要性。结论是没有单一的circRNA生物标志物普遍适用于TB和LC。最终,这篇综述强调了circRNAs在TB和LC中的关键作用,鼓励在这两种疾病的生物标志物识别和治疗开发方面进行进一步研究。
    This review signifies the role of circular RNAs (circRNAs) in tuberculosis (TB) and lung cancer (LC), focusing on pathogenesis, diagnosis, and treatment. CircRNAs, a newly discovered type of non-coding RNA, have emerged as key regulators of gene expression and promising biomarkers in various bodily fluids due to their stability. The current review discusses circRNA biogenesis, highlighting their RNase-R resistance due to their loop forming structure, making them effective biomarkers. It details their roles in gene regulation, including splicing, transcription control, and miRNA interactions, and their impact on cellular processes and diseases. For LC, the review identifies circRNA dysregulation affecting cell growth, motility, and survival, and their potential as therapeutic targets and biomarkers. In TB, it addresses circRNAs\' influence on host anti-TB immune responses, proposing their use as early diagnostic markers. The paper also explores the interplay between TB and LC, emphasizing circRNAs as dual biosignatures, and the necessity for differential diagnosis. It concludes that no single circRNA biomarker is universally applicable for both TB and LC. Ultimately, the review highlights the pivotal role of circRNAs in TB and LC, encouraging further research in biomarker identification and therapeutic development concomitant for both diseases.
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  • 文章类型: Journal Article
    背景:长COVID,一个新出现的公共卫生问题,以SARS-CoV-2感染后的持续症状为特征。这项研究旨在探讨COVID-19后症状学与患者痛苦之间的关系,采用潜在类别分析来揭示症状共现模式及其与痛苦的关联。
    方法:一项横断面研究使用在线调查对来自台湾南部一所大学和附属医院的240名参与者进行。调查量化了由于持续症状引起的困扰,并评估了长型COVID的患病率,症状共现,和潜在的症状类别。潜在类别分析(LCA)确定了不同的症状模式,多元回归模型评估了症状模式之间的关联,苦恼,和人口因素。
    结果:研究发现,80%的参与者经历了长COVID,症状持续三个月以上。患有多种COVID-19感染的个体总体上表现出显着增加(β=1.79),心血管(β=0.61),和神经心理症状(β=2.18),和较高的总痛苦评分(β=6.35)。确定了三个不同的症状学类别:“多样化”,\"轻度\",和“严重”症状。“轻度症状”类别与较低的痛苦相关(-10.61),而“严重症状”类别显示出由于症状引起的痛苦显着增加(13.32)。
    结论:该研究强调了长COVID对个体的重大影响,具有不同的症状模式和相关的痛苦。它强调了多种COVID-19感染对症状严重程度的累积影响,以及量身定制的护理策略的重要性。
    BACKGROUND: Long COVID, an emerging public health issue, is characterized by persistent symptoms following SARS-CoV-2 infection. This study aims to explore the relationship between post-COVID-19 symptomatology and patient distress employing Latent Class Analysis to uncover symptom co-occurrence patterns and their association with distress.
    METHODS: A cross-sectional study was conducted using an online survey among 240 participants from a university and affiliated hospital of southern Taiwan. The survey quantified distress due to persistent symptoms and assessed the prevalence of Long COVID, symptom co-occurrence, and latent symptom classes. Latent Class Analysis (LCA) identified distinct symptom patterns, and multiple regression models evaluated associations between symptom patterns, distress, and demographic factors.
    RESULTS: The study found that 80 % of participants experienced Long COVID, with symptoms persisting for over three months. Individuals with multiple COVID-19 infections showed a significant increase in general (β = 1.79), cardiovascular (β = 0.61), and neuropsychological symptoms (β = 2.18), and higher total distress scores (β = 6.35). Three distinct symptomatology classes were identified: \"Diverse\", \"Mild\", and \"Severe\" symptomatology. The \"Mild Symptomatology\" class was associated with lower distress (-10.61), while the \"Severe Symptomatology\" class showed a significantly higher distress due to symptoms (13.32).
    CONCLUSIONS: The study highlights the significant impact of Long COVID on individuals, with distinct patterns of symptomatology and associated distress. It emphasizes the cumulative effect of multiple COVID-19 infections on symptom severity and the importance of tailored care strategies.
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  • DOI:
    文章类型: English Abstract
    目的:探讨中国人群从青春期到成年早期,自我控制与抑郁症状和超重或肥胖并存的关系,并为今后针对不同风险个体的个性化干预提供科学依据。
    方法:来自持续10年的前瞻性队列研究:中国家庭小组研究(CFPS),共纳入608名符合以下纳入和排除标准的儿童和青少年作为研究对象:(1)10至19岁,根据中国标准,在正常体重下,2010年无抑郁症状;(2)有自我控制评分,并在2010年至2020年之间对抑郁症状和体重指数(BMI)进行至少两次测量;(3)每个家庭中唯一或最小的儿童和青少年。抑郁症状与超重或肥胖的共同发生以三种方式定义:随着时间的推移,多个测量结果的抑郁症状标准化评分和BMIZ评分的平均水平均处于较高水平,或基于属于“风险类型”的潜在分类轨迹模型(LCTM)的抑郁症状和BMI随时间的轨迹,或个体在最后一次随访调查中出现抑郁症状和超重/肥胖.使用多项Logistic回归模型来检查自我控制的标准化得分与抑郁症状和超重或肥胖的同时发生之间的关联。
    结果:在调整年龄(岁)后,使用健康个体作为参照组时,自我控制得分与抑郁症状和超重或肥胖的同时发生有关,性别(男/女),地区(城市/农村),每周体力活动持续时间(高/低),父母教育水平(大专或以上学历/高中或以下),父母体重状况(超重或肥胖或不肥胖),和父母的抑郁症状(是否有抑郁症状),无论风险人群的定义如何。具体来说,抑郁症状和超重或肥胖同时发生的风险降低了33%(95CI:14%至48%,基于一段时间内多次测量的平均水平)到78%(95CI:6%到95%,基于抑郁症状和BMI随时间的联合轨迹),每1个标准差(1-SD)增加自我控制评分。此外,抑郁症状为主和超重或肥胖为主的风险降低了25%(95CI:4%至42%,仅基于一段时间内多次测量的平均水平)和21%(95CI:1%至37%,仅基于抑郁症状和BMI随时间的联合轨迹)自我控制评分每增加1-SD,分别。根据世界卫生组织(WHO)标准定义个体体重状态的敏感性分析结果与我们的主要发现一致。
    结论:从青春期到成年早期,自我控制评分较高的个体出现抑郁症状和超重或肥胖的风险较低,这表明,未来可以根据自我控制评分对抑郁症状和超重或肥胖的同时发生进行个性化干预。
    OBJECTIVE: To explore the association between self-control and the co-occurrence of depressive symptoms and overweight or obesity from adolescence to early adulthood in the Chinese population, and to provide a scientific basis for personalized interventions targeting individuals with different risks in the future.
    METHODS: From a prospective cohort study that lasted for 10 years: The China family panel studies (CFPS), a total of 608 children and adolescents meeting the following inclusion and exclusion criteria were included as study subjects: (1) Aged 10 to 19 years, at normal weight according to Chinese standards, and without depressive symptom in 2010; (2) Had self-control scores, and with at least two measurements of depressive symptoms and body mass index (BMI) between 2010 and 2020; (3) The only one or the youngest child and adolescent from each family. The co-occurrence of depressive symptoms and overweight or obesity was defined in three ways: Both of the average level of standardized scores of depressive symptoms and BMI Z-scores across multiple measurements over time were at a high level, or both of the trajectories of depressive symptoms and BMI over time based on the latent classification trajectory model (LCTM) belonging to the \"risk-type\", or individuals had depressive symptoms and overweight/obesity at the last follow-up survey. The multinomial Logistic regression model was used to examine the association between standardized scores of self-control and the co-occurrence of depressive symptoms and overweight or obesity.
    RESULTS: The score of self-control was associated with the co-occurrence of depressive symptoms and overweight or obesity when using healthy individuals as the reference group after adjusting for age (years), gender (male/female), area (urban/rural), weekly physical activity duration (high/low), parental education level (college or above/high school or below), parental weight status (overweight or obese or not), and parental depressive symptoms (with depressive symptoms or not), regardless of the definition of the risk population. Specifically, the risk of co-occurrence of depressive symptoms and overweight or obesity was reduced by 33% (95%CI: 14% to 48%, based on the average level across multiple measurements over time) to 78% (95%CI: 6% to 95%, based on the joint trajectories of depressive symptoms and BMI over time) per 1-standard deviation (1-SD) increase in self-control score. In addition, the risk of depressive-symptom-dominant and overweight-or-obesity-dominant was reduced by 25% (95%CI: 4% to 42%, only based on the average level across multiple measurements over time) and 21% (95%CI: 1% to 37%, only based on the joint trajectories of depressive symptoms and BMI over time) per 1-SD increase in self-control score, respectively. The results from sensitivity analysis that defined individuals\' weight status according to World Health Organization (WHO) standards were consistent with our main findings.
    CONCLUSIONS: Individuals with higher self-control scores from adolescence to early adulthood have a lower risk of co-occurrence of depressive symptoms and overweight or obesity, suggesting that personalized interventions for co-occurrence of depressive symptoms and overweight or obesity can be carried out based on self-control scores in the future.
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  • 文章类型: Journal Article
    在社区居住的中国老年人中,抑郁和焦虑症状(CO)并存的患病率及其对感知整体健康的影响尚不清楚。该研究的目的是调查CO的患病率并探讨其对自评健康(SRH)的影响。
    这项研究包括了2018年中国纵向健康长寿调查(CLHLS)浪潮中12301名年龄≥65岁的人,对中国大陆老年人的全国代表性调查。参与者通过流行病学研究中心抑郁量表(CES-D-10)的10项和7项广义焦虑症问卷(GAD-7)接受了面对面的访谈和抑郁症状和焦虑症状的评估。分别。SRH通过自我报告测量。在调整混杂变量后,使用逻辑回归模型来检查CO和SRH之间的关联。
    平均年龄为83.4(SD:11.0)岁,女性为6576(53.5%)。仅抑郁症状(DSO)的年龄和性别标准化患病率为38.6%,仅焦虑症状(ASO)为1.5%,CO为10.8%。与没有抑郁和焦虑症状的人相比,患有DSO或ASO的老年人更可能对SRH产生显著影响.尤其是,CO可能会产生最大的SRH水平下降。
    CO在中国老年人中并不少见。与DSO或ASO相比,患有CO的老年人SRH水平较低的风险增加。老年人应更多关注CO。
    UNASSIGNED: The prevalence of the co-occurrence of depressive and anxious symptoms (CO) and their influence on perceived overall health were not clear in community dwelling Chinese older adults. The aims of the study were to investigate the prevalence of CO and to explore its influence on self-rated health (SRH).
    UNASSIGNED: This study included 12301 individuals aged ≥65 years from the 2018 wave of the Chinese Longitudinal Healthy Longevity Survey (CLHLS), a nationally representative survey of older adults in mainland China. Participants received face-to-face interviews and assessments of depressive symptoms and anxious symptoms via 10-item of the Center for Epidemiologic Studies Depression Scale (CES-D-10) and 7-item Generalized Anxiety Disorder Questionnaire (GAD-7), respectively. SRH was measured by self-reported. A logistic regression model was used to examine the association between CO and SRH after adjusting for confounding variables.
    UNASSIGNED: The average age was 83.4 (SD: 11.0) years and there were 6576 (53.5%) females. The age- and sex-standardized prevalence of depressive symptoms only (DSO) was 38.6%, anxious symptoms only (ASO) was 1.5%, and CO was 10.8%. Compared with those without depressive and anxious symptoms, the older adults with DSO or ASO were more likely to have significant influence on SRH. And particularly, CO was likely to produce the greatest decrement in the level of SRH.
    UNASSIGNED: CO was not rare in Chinese older adults nationwide. The older adults having CO had increased risk for lower level of SRH than having DSO or ASO. More attention should be given to CO among the older adults.
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  • 文章类型: Journal Article
    微塑料(MPs)和多环芳烃(PAHs)是海洋生态系统中发现的有毒污染物。本文旨在探讨海洋环境中PAHs和MPs混合污染的来源和机制。了解PAHs和MP的释放来源对于提出有关这些污染物释放的适当法规至关重要。此外,详细研究了海洋生态系统中PAHs的共现机制和MPs在分布中的作用。此外,提出了PAHs和MPs之间的化学亲和力,强调导致它们在海洋生态系统中持续存在的潜在机制。此外,我们深入研究了影响共现的各种因素,化学亲和力,以及混合污染物在海洋生态系统中的分布。这些因素,包括环境特征,国会议员的财产,PAHs分子量和疏水性,和微生物的相互作用,进行了严格的检查。共污染引起了对其降解和毒性的潜在协同作用的担忧。有趣,很少有研究报道与单独的修复相比,混合污染下污染物的光降解和生物降解增强。然而,目前,报告的PAHs和MP混合污染的修复策略很少且有限。虽然有一些单独删除PAHs和国会议员的举措,缺乏专门针对混合污染物去除的研究。这一缺陷突出了需要进一步调查和开发有效的修复方法,以有效修复海洋生态系统中的PAHs和MPs。
    Microplastics (MPs) and polycyclic aromatic hydrocarbons (PAHs) are toxic contaminants that have been found in marine ecosystems. This review aims to explore the sources and mechanisms of PAHs and MPs mixed contamination in marine environments. Understanding the released sources of PAHs and MPs is crucial for proposing appropriate regulations on the release of these contaminants. Additionally, the mechanisms of co-occurrence and the role of MPs in distributing PAHs in marine ecosystems were investigated in detail. Moreover, the chemical affinity between PAHs and MPs was proposed, highlighting the potential mechanisms that lead to their persistence in marine ecosystems. Moreover, we delve into the various factors influencing the co-occurrence, chemical affinity, and distribution of mixed contaminants in marine ecosystems. These factors, including environmental characteristics, MPs properties, PAHs molecular weight and hydrophobicity, and microbial interactions, were critically examined. The co-contamination raises concerns about the potential synergistic effects on their degradation and toxicity. Interesting, few studies have reported the enhanced photodegradation and biodegradation of contaminants under mixed contamination compared to their individual remediation. However, currently, the remediation strategies reported for PAHs and MPs mixed contamination are scarce and limited. While there have been some initiatives to remove PAHs and MPs individually, there is a lack of research specifically targeting the removal of mixed contaminants. This deficiency highlights the need for further investigation and the development of effective remediation approaches for the efficient remediation of PAHs and MPs from marine ecosystems.
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  • 文章类型: Journal Article
    土壤盐渍化对陆地生态系统构成全球性威胁。土壤微生物,对于维持生态系统服务至关重要,对土壤结构和性质的变化敏感,特别是盐度。在这项研究中,根际和块状土壤的对比动态集中在探索盐分升高对土壤微生物群落的影响上,评估在盐水环境中塑造其成分的影响。这项研究观察到细菌α多样性随着盐度的增加而普遍下降,随着群落结构在分类群相对丰度方面的变化。盐胁迫下细菌共生网络的大小和稳定性下降,表明功能和弹性损失。细菌群落组装中异质选择比例的增加表明盐度在形成细菌群落中的关键作用。随机支配真菌群落组装,表明它们对土壤盐分的敏感性相对较低。然而,双向网络分析显示,与散装土壤相比,在盐分胁迫下,真菌在根际增强的微生物相互作用中起着比细菌更重要的作用。因此,微生物跨域相互作用可能在根际盐胁迫下的细菌恢复力中起关键作用。
    Soil salinization poses a global threat to terrestrial ecosystems. Soil microorganisms, crucial for maintaining ecosystem services, are sensitive to changes in soil structure and properties, particularly salinity. In this study, contrasting dynamics within the rhizosphere and bulk soil were focused on exploring the effects of heightened salinity on soil microbial communities, evaluating the influences shaping their composition in saline environments. This study observed a general decrease in bacterial alpha diversity with increasing salinity, along with shifts in community structure in terms of taxa relative abundance. The size and stability of bacterial co-occurrence networks declined under salt stress, indicating functional and resilience losses. An increased proportion of heterogeneous selection in bacterial community assembly suggested salinity\'s critical role in shaping bacterial communities. Stochasticity dominated fungal community assembly, suggesting their relatively lower sensitivity to soil salinity. However, bipartite network analysis revealed that fungi played a more significant role than bacteria in intensified microbial interactions in the rhizosphere under salinity stress compared to the bulk soil. Therefore, microbial cross-domain interactions might play a key role in bacterial resilience under salt stress in the rhizosphere.
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  • 文章类型: Journal Article
    耕作方式可以根据作物阶段对土壤性质产生实质性影响。耕作与作物生长在丛枝菌根真菌(AMF)群落上的相互作用尚不清楚。我们调查了四种耕作处理之间的相互作用(CT:常规耕作,RT:减少耕作,NT:不覆盖耕作,和SS:用覆盖物深松),维持了25年,和两个小麦生育期(伸长期和籽粒灌浆期)对AMF多样性和群落组成的影响。
    AMF群落组成在小麦生长过程中发生了强烈变化,主要是因为Claroideoglomus显性属的相对丰度的变化,真菌,根瘤菌,Entrophospora,还有Glomus.共现网络分析表明,籽粒灌浆阶段比伸长阶段具有更复杂的网络。冗余分析结果表明,梯形属主要响应伸长期土壤有机碳的变化,而在籽粒灌浆过程中,总氮含量会影响梯形属。与CT相比,用覆盖物治疗,即,NT和SS,显著改变了AMF群落组成。不同耕作方式下AMF群落的变化取决于小麦生物量和土壤养分。NT显着增加了Glomus和Septoglomus的相对丰度,而RT显着增加了Claroideoglomus的相对丰度。
    我们的发现表明,优势属的相对丰度在小麦生育期发生了变化。适当的耕作方式(例如,NT和SS)有利于黄土高原种植系统的长期可持续发展。
    UNASSIGNED: Tillage practices can substantially affect soil properties depending on crop stage. The interaction between tillage and crop growth on arbuscular mycorrhizal fungi (AMF) communities remains unclear. We investigated the interactions between four tillage treatments (CT: conventional tillage, RT: reduced tillage, NT: no tillage with mulch, and SS: subsoiling with mulch), maintained for 25 years, and two wheat growth stages (elongation stage and grain filling stage) on AMF diversity and community composition.
    UNASSIGNED: The AMF community composition strongly changed during wheat growth, mainly because of changes in the relative abundance of dominant genera Claroideoglomus, Funneliformi, Rhizophagu, Entrophospora, and Glomus. Co-occurrence network analysis revealed that the grain filling stage had a more complex network than the elongation stage. Redundancy analysis results showed that keystone genera respond mainly to changes in soil organic carbon during elongation stage, whereas the total nitrogen content affected the keystone genera during grain filling. Compared with CT, the treatments with mulch, i.e., NT and SS, significantly changed the AMF community composition. The change of AMF communities under different tillage practices depended on wheat biomass and soil nutrients. NT significantly increased the relative abundances of Glomus and Septoglomus, while RT significantly increased the relative abundance of Claroideoglomus.
    UNASSIGNED: Our findings indicate that the relative abundance of dominant genera changed during wheat growth stages. Proper tillage practices (e.g., NT and SS) benefit the long-term sustainable development of the Loess Plateau cropping systems.
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