Environmental Technology & Innovation最新文献

{"title":"Biological nitrogen fixation driven by methane anaerobic oxidation supports the complex biological communities in cold-seep habitat","authors":"Xinyu Wang ,&nbsp;Dahe Zhao ,&nbsp;Tao Yu ,&nbsp;Yaxin Zhu ,&nbsp;Mingyue Jiang ,&nbsp;Ying Liu ,&nbsp;Songnian Hu ,&nbsp;Yingfeng Luo ,&nbsp;Hua Xiang ,&nbsp;Yanning Zheng","doi":"10.1016/j.eti.2024.103938","DOIUrl":"10.1016/j.eti.2024.103938","url":null,"abstract":"<div><div>Cold seeps represent a class of chemosynthetic ecosystems that are prevalent in deep-sea environments. Despite extensive research on the functional microbiology of cold seeps, it remains unclear how methane oxidation is coupled with the nitrogen and sulfur cycles in the reduced sediment habitats across various spatial scales. Here, we employed metagenomic sequencing to investigate the microbial communities within the Haima cold seep sediments, with particular attention to microorganisms involved in biogeochemical cycles at varying spatial scales. In the surface layer of regular sediment areas, the sulfur-oxidizing bacteria such as Chromatiates, PS1, SZUA-229, and GCF-002020875 were the most numerically abundant groups. These bacteria recycle sulfide and generate sulfate while facilitating nitrate removal to support the methane anaerobic oxidation in the subsurface layer. However, in the biogenous sediments of cold seep ecosystems, methane anaerobic oxidation and nitrogen fixation emerge as the predominant processes. The microbial coupling groups, including sulfate reducing bacteria C00003060 and ANME-1, utilize energy from methane anaerobic oxidation to complete the nitrogen fixation. These findings suggest that cold-seep diazotrophs can support complex biological communities by supplying fixed nitrogen. This study enhances our understanding of the functional microbial structure and metabolic capabilities within cold seep ecosystems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103938"},"PeriodicalIF":6.7,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of combined applications of S-nZVI and organic amendments on cadmium and arsenic accumulation in rice: Possible mechanisms and potential impacts on soil health","authors":"Shuo Sun ,&nbsp;Jiaqing Huang ,&nbsp;Jiong Wen ,&nbsp;Zhi Peng ,&nbsp;Nan Zhang ,&nbsp;Yanan Wang ,&nbsp;Yang Zhang ,&nbsp;Shiming Su ,&nbsp;Xibai Zeng","doi":"10.1016/j.eti.2024.103942","DOIUrl":"10.1016/j.eti.2024.103942","url":null,"abstract":"<div><div><em>In situ</em> remediation of cadmium (Cd) and arsenic (As) (Cd&amp;As) contaminated soil using iron-based materials has been extensively investigated. Simultaneous immobilizing Cd&amp;As with iron-based materials while maintaining soil health poses a significant challenge. This study examined the effects of sepiolite-supported nanoscale zero-valent iron (S-nZVI) combined with organic amendments (RS: Rice straw; PM: Pig manure) on Cd&amp;As uptake by rice and soil quality. Grain Cd (0.134 mg kg⁻¹) and inorganic As (iAs) (0.099 mg kg⁻¹) levels in S-nZVI+PM treatment were reduced by 78.95 % and 68.69 % compared to CK (<em>P</em> &lt; 0.05), and decreased by 52.62 % and 17.50 % compared to S-nZVI treatment (<em>P</em> &lt; 0.05), significantly lower than the Chinese Food Safety Standard (&lt;0.20 mg kg⁻¹). The elevated soil pH, increased amorphous iron (Feox), and PM complexation co-contributed to Cd immobilization in S-nZVI+PM treatment; concurrently, the higher Feox maintained lower available As levels in paddy soil. In addition, S-nZVI+PM improved soil fertility, functional enzyme activity, soil bacterial community diversity, and increased brown rice yield. However, S-nZVI+RS facilitated the reductive dissolution of Fe(oxy)(hydro) oxides and As methylation in paddy soil, significantly increasing the total As and organic As content in grains by 113.13 % and 236.79 %, respectively, compared to S-nZVI treatment. Caution should be exercised in the application of S-nZVI+RS in As-contaminated paddy soil. S-nZVI+PM proved more effective in immobilizing Cd&amp;As and provided greater benefits to soil quality compared to S-nZVI+RS. Overall, S-nZVI+PM represents an eco-friendly approach for alleviating Cd&amp;As accumulation in rice grains while concurrently improving soil health.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103942"},"PeriodicalIF":6.7,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microcoleus vaginatus: A novel amendment for constructing artificial soil from tailings","authors":"Zhixiang Wang ,&nbsp;Jingwen Pan ,&nbsp;Zijing Lu ,&nbsp;Ling Xia ,&nbsp;Shaoxian Song ,&nbsp;Yong Hu ,&nbsp;Yinta Li","doi":"10.1016/j.eti.2024.103939","DOIUrl":"10.1016/j.eti.2024.103939","url":null,"abstract":"<div><div>Due to lack of soil structure, the fine-grained tailings were difficult with nutrient retention and eco-restoration. Establishing suitable arable soil structures is crucial for the effective restoration of the ecological environment in tailings stockpiles. In this study, the novel amendment, living <em>Microcoleus vaginatus</em>, was employed to help shaping the soil structure of tailings for promoting vegetation growth on tailings soil. Different dosage of <em>M. vaginatus</em> was added into the tailings in pot experiments, and it was found that microalgae could increase the organic matter content, geometric mean diameter, and improve plant growth under the optimal dosage of 1:15000 (w/w). With the optimized microalgae inoculation dosage in the field trials, the plant height and weight increased by 4.48 % and 14.93 %, respectively. Moreover, the bulk density decreased by 9.23 %, significantly, with the content of macro-aggregates, mean weight diameter and geometric mean diameter in soil increased by 33.81 %, 110 % and 101 %, respectively. The water content increased by 1.57 times, and porosity by 2 times. Furthermore, the organic matter content increased by 20.49 %, with the surge of the ecologically beneficial species <em>Thiobacillus</em>. This study confirms the positive effect of <em>M. vaginatus</em> on the formation of soil structure in fine tailings, effectively improving the nutrients possessing and microbial metabolic functions of tailings, which provides a new technical approach for ecological restoration in mine.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103939"},"PeriodicalIF":6.7,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leveraging metabolomics and ionomics to illuminate aluminum-induced toxicity in mouse organs","authors":"Shiyuan Zhao ,&nbsp;Jinxiu Guo ,&nbsp;Yufei Wei ,&nbsp;Junjun Meng ,&nbsp;Xue Chu ,&nbsp;Shiyu Zhao ,&nbsp;Yanli Liu ,&nbsp;Wenxue Sun ,&nbsp;Jianhua Wang ,&nbsp;Xin Xie ,&nbsp;Pei Jiang","doi":"10.1016/j.eti.2024.103927","DOIUrl":"10.1016/j.eti.2024.103927","url":null,"abstract":"<div><div>Aluminum, a widely prevalent environmental pollutant, has been established to exert toxic effects on multiple organs in the human body. To gain a comprehensive understanding of these toxic effects and the mechanisms involved, this study aimed to assess potential correlations between metabolites and ion data through metabolomic and ionomic analyses. We sought to explore the intricate impact of aluminum on various organs in mice. Gas chromatography-mass spectrometry (GC-MS) and inductively coupled plasma-mass spectrometry (ICP-MS) were employed to conduct metabolomic and ionomic analyses on the hippocampus, cortex, heart, liver, spleen, lung, kidney, bone, intestine, stomach, and serum of both control and aluminum-exposed mice. Besides, histological examinations and behavioral experiments were conducted. Multivariate analysis revealed 91 differential metabolites across various organs, primarily encompassing amino acids, fatty acids, and carbohydrates. The implicated abnormal metabolic pathways included amino acid metabolism, arachidonic acid metabolism, and glutathione metabolism. Additionally, alterations in the homeostasis of ions such as manganese, zinc, selenium, iron, copper, phosphorus, magnesium, and calcium were observed in various organs, potentially influencing the activity of critical enzymes. The changes in these potential biomarkers and ions suggest toxic mechanisms of aluminum exposure involving oxidative stress, inflammatory responses, cellular signal dysregulation, disruption of key enzyme activities, and impaired energy metabolism. This study provides a novel perspective on understanding the toxic mechanisms of aluminum exposure, potentially contributing to the prevention and treatment of aluminum toxicity.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103927"},"PeriodicalIF":6.7,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fire Phoenix mediated bioremediation of high-PAHs contaminated soil enhanced by graphene oxide application","authors":"Yu Wang ,&nbsp;Rui Liu ,&nbsp;Yuanyuan Dai ,&nbsp;Jianjun Chen ,&nbsp;Yao Xiao ,&nbsp;Xiaoyi Bi ,&nbsp;Ping Zou ,&nbsp;Shuibing Li","doi":"10.1016/j.eti.2024.103933","DOIUrl":"10.1016/j.eti.2024.103933","url":null,"abstract":"<div><div>Soil polluted by polycyclic aromatic hydrocarbons (PAHs) is a serious problem in the world. Phytoremediation is an inexpensive and environmentally benign method for minimizing PAHs from contaminated soils. Nanomaterials have been reported to enhance phytoremediation efficiency. In the present study, Fire Phoenix were planted in low (105.00 ± 18.45 mg kg⁻¹) and high (154.55 ± 20.78 mg kg⁻¹) PAH-contaminated soils supplemented with 0, 300, 400, 500, and 600 mg kg⁻¹ graphene oxide (GO), respectively. After 0, 60, 120, and 150 days of plant growth, plant canopy heights, biomass, removal rates of PAHs, rhizosphere microbial community composition as well as the expression of functional genes of microbial organisms were investigated. Results showed that GO at a given concentration increased biomass accumulation of Fire Phoenix grown in low- or high PAHs contaminated soils. The removal rate of ∑6PAH, especially high-ring PAHs, from high-PAH-contaminated soil was high by GO treatment. Compared with the control treatment, GO application at 500 mg kg⁻¹ resulted in 21.35 %, 22.74 %, and 6.17 % of ∑6PAH removed from high-PAH-contaminated soil after 60, 120, and 150 days of plant growth, respectively. The soil microbial analysis showed that the abundance of <em>Pseudomonas</em>, <em>Sulfuritalea</em>, KCM-B-112, and <em>Mycobacterium</em> significantly changed in soils. Spearman correlation analysis showed that <em>Pseudomonas</em> and <em>Sulfuritalea</em> were major degrading bacteria in the microbial community. The expression of five microbial genes (<em>PAH-RHDα</em>, <em>PAH-RHDα-GN</em>, <em>PAH-RHDα-GP</em>, <em>nidA</em>, and <em>nidB</em>) in GO amended soils were higher than those devoid of GO. Correlation analysis showed that <em>RHDα</em>, <em>nidA</em>, and <em>nidB</em> were essential contributors to the removal of PAHs. Our findings suggest that appropriate application of GO could be a viable method for enhanced biodegradation of PAHs from contaminated soils.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103933"},"PeriodicalIF":6.7,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste napkin biochar with high-performance designed for antibiotic rapidly removal","authors":"Yiping Jin ,&nbsp;Zhongwen Zhou ,&nbsp;Siji Chen ,&nbsp;Chunjie Tian ,&nbsp;Guang Chen","doi":"10.1016/j.eti.2024.103921","DOIUrl":"10.1016/j.eti.2024.103921","url":null,"abstract":"<div><div>In this work, domestic refuse waste napkin (WN) was used as raw material, modified by different dyes and prepared to N-doped biochars via carbonation and activation methods. The results showed that the addition of dyes not only optimized the physicochemical properties of biochars, but also greatly improved the adsorption performances. The specific surface areas of N-doped biochars (BWN-CR, BWN-CV, and BWN-MO) were increased by 5.95–26.6 % compared with that of undoped biochar (BWN, 2173.13 m²/g), similarly, the content of nitrogen atoms in the modified biochars increased by 0.50–2.03 times. In the adsorption experiments using tetracycline hydrochloride as adsorption model, the adsorption capacities of all N-doped biochars (938.71–1159.05 mg/g) were greater than that of most adsorbents including BWN (861.33 mg/g). After 10 cycles of use, both all of the biochars can still maintain more than 65 % of the performance, indicating their stable regeneration ability. This work not only prepared a series of biochars that can be used to efficiently remove antibiotics from water, but more importantly provided a new strategy for the high-value utilization of WN and further released the application potential of secondary resources.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103921"},"PeriodicalIF":6.7,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a data-driven three-dimensional PM2.5 forecast model based on machine learning algorithms","authors":"Zizhen Han ,&nbsp;Tianyi Guan ,&nbsp;Xinfeng Wang ,&nbsp;Xin Xin ,&nbsp;Xiaomeng Song ,&nbsp;Yidan Wang ,&nbsp;Can Dong ,&nbsp;Pengjie Ren ,&nbsp;Zhumin Chen ,&nbsp;Shilong Ren ,&nbsp;Qingzhu Zhang ,&nbsp;Qiao Wang","doi":"10.1016/j.eti.2024.103930","DOIUrl":"10.1016/j.eti.2024.103930","url":null,"abstract":"<div><div>Fine particle matter (PM_2.5) pollution is a global environmental problem and has significant impacts on air quality and human health. Accurate prediction is crucial for mitigating PM_2.5 pollution and reducing its environmental and health impacts. However, the current data-driven PM_2.5 prediction model does not fully consider the vertical distribution pattern and the contribution of source emissions to achieve a broader and more accurate prediction of PM_2.5. This study introduces a novel approach to predict three-dimensional (3D) air quality at a high spatial-temporal resolution, with multi-source data and machine learning algorithms. Specifically, we developed a two-stage 3D PM_2.5 prediction model by standardizing and integrating meteorology data, anthropogenic emission inventory data, air quality monitoring data, and satellite remote sensing data into a 3D dataset. In the first stage, we used random forest (RF) models to estimate the spatial-temporal distributions of aerosol optical depth (AOD) and ozone (O₃) density. In the second stage, we further used these estimations to predict hourly PM_2.5 concentrations at both the surface and altitude levels with another RF model. To enhance the prediction performance, dynamic corrections were implemented to the predicted PM_2.5 concentrations. Using this model, we predicted PM_2.5 concentrations for the next 72 hours and validated the spatial-temporal fluctuations against monitoring data across Shandong Province, China. Furthermore, we assessed the contribution of local emissions and evaluated the air quality improvement resulting from local emission reduction measures. Our findings confirm the capability of the data-driven machine learning model for 3D air quality prediction on a regional scale, emphasizing the importance of regional emission control to improve local air quality.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103930"},"PeriodicalIF":6.7,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physiological responses of Leersia hexandra Swart to Cu and Ni Co-contamination: Implications for phytoremediation","authors":"Xuehong Zhang ,&nbsp;Wanting Cui ,&nbsp;Jun Yan ,&nbsp;Xuemeng Yang ,&nbsp;Mouyixing Chen ,&nbsp;Pingping Jiang ,&nbsp;Guo Yu","doi":"10.1016/j.eti.2024.103924","DOIUrl":"10.1016/j.eti.2024.103924","url":null,"abstract":"<div><div>This study investigates the physiological responses, co-enrichment mechanisms, and rhizospheric environment characteristics of <em>L. hexandra</em> in soils polluted with copper (Cu) and nickel (Ni). The growth of <em>L. hexandra</em> was significantly inhibited (<em>p</em> &lt; 0.05) under combined Cu and Ni stress, particularly at higher Cu concentrations (150 mg·kg⁻¹), leading to stunted growth, yellowing, and wilting. The accumulation of heavy metals was predominantly observed in the roots, with Cu showing a higher accumulation than Ni. Furthermore, heavy metal stress altered the rhizospheric microbial community, reducing the relative abundance of Firmicutes while increasing that of Proteobacteria, Patescibacteria, and Bacteroidota. The secretion of organic acids, particularly malic acid, increased under heavy metal stress, indicating an adaptive mechanism of <em>L. hexandra</em>. These findings enhance our understanding of the adaptation mechanisms of plants to heavy metal co-contamination and provide insights into the development of effective phytoremediation strategies. Future research will focus on field trials and advanced molecular analyses to further unravel the mechanisms of heavy metal tolerance in <em>L. hexandra</em>, enhancing its application in phytoremediation strategies.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103924"},"PeriodicalIF":6.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microalgae-mediated bioremediation: Metabolomic profiling and Adaptive Responses under Amoxicillin-induced stress","authors":"Bhawna Bisht ,&nbsp;Afzal Hussain ,&nbsp;Arun Kumar ,&nbsp;Waseem Ahmad ,&nbsp;Jerin James ,&nbsp;Manisha Nanda ,&nbsp;Mikhail. S Vlaskin ,&nbsp;Monu Verma ,&nbsp;Vinod Kumar","doi":"10.1016/j.eti.2024.103920","DOIUrl":"10.1016/j.eti.2024.103920","url":null,"abstract":"<div><div>This study examines the effects of varying concentrations (25, 50, 100, and 150<!--> <!-->mg/L) of Amoxicillin-3000 (AMOX), a widely prescribed beta-lactam antibiotic, on the growth of the microalga <em>Chlorella sorokiniana</em> UUIND6. Results revealed that low AMOX concentration (25<!--> <!-->mg/L) stimulated best algal growth, prompting further exploration of AMOX degradation processes, identification of transformation products, biochemical composition of microalgae. Photodegradation, both direct (light) and indirect (induced by microalgae) was examined. LCMS identified similar transformation product in both the photodegradation with a m/z ratio of 367.1. Moreover, microalgae-induced c photodegradation resulted in negligible zone of inhibition after 96<!--> <!-->h, achieving an impressive 98.8% degradation, significantly surpassing the 85.5% degradation observed with light alone. Modifications in abiotic factors also influence the stoichiometry of microalgae cells, resulting in significantly higher lipid (31.24 ± 2.93%) and protein (44.12 ± 1.75%) content compared to control cells (lipid 23.6 ± 2.4%, protein 31.62 ± 1.52%), indicating notable metabolic alterations (p&lt;0.05) under AMOX-induced stress. Additionally, increased reactive oxygen species (ROS) scavenging activity (48.89 ± 2.51%) suggests photosynthetic impairment and a decrease in TPC and TFC content, aiding in the prevention of oxidative stress. Overall, this study highlights the advantages of <em>Chlorella</em>-induced bioremediation of AMOX via photodegradation over light-driven processes. It presents a practical, sustainable approach for mitigating ecological risks in freshwater ecosystems and provides insights into antibiotic removal mechanisms and performance in microalgae-based systems under environmentally relevant conditions.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103920"},"PeriodicalIF":6.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maize growth and physiological dynamics: Arsenic uptake modulation under combined abiotic stresses of salinity, boron and arsenic","authors":"Muhammad Mubashar Iqbal ,&nbsp;Muhammad Ansar Farooq ,&nbsp;Waqas ud Din Khan ,&nbsp;Umair Ashraf ,&nbsp;Alanoud T. Alfaghom ,&nbsp;Saud Alamri","doi":"10.1016/j.eti.2024.103915","DOIUrl":"10.1016/j.eti.2024.103915","url":null,"abstract":"<div><div>Soil salinity and relatively high boron (B), frequently co-occur in agricultural environments, posing significant challenges to crop growth and productivity. This inhibitory effect on plant growth can be further exacerbated when crops like maize (<em>Zea mays</em> L.) are exposed to the arsenic (As) contaminated soils and irrigation water, along with elevated salinity and B levels. Understanding these combined effects is crucial for optimizing crop resilience. A hydroponic study was conducted to assess the interactive effects of high B and As under saline conditions on maize. Plants were stressed with salinity (60<!--> <!-->mM NaCl), boron (3<!--> <!-->mM H₃BO₃) and arsenic (40<!--> <!-->µM Na₃AsO₄) alone and in combination. A 20-day stress period caused significant reduction in overall growth, with more pronounced effect under combined stress. Root and shoot dry biomass was decreased by 63.45 and 57.84% while leaf area and chlorophyll index (SPAD value) were diminished by 56.34 and 64.23%, membrane stability index (MSI) and leaf relative water contents (RWC %) were reduced by 63.92 and 61.59% upon exposure to these combined stressors as compared to the control treatment. Arsenic stress increased the shoot and root As accumulation by 52.4 and 84.6-fold, respectively. However, high B and salinity effectively suppressed these levels due to their negative correlation with As uptake. Further in-depth phytometric profiling is needed to understand the underlying mechanisms of plant stress tolerance and nutrient homeostasis under these combined stresses.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103915"},"PeriodicalIF":6.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}