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Peng Q, Zheng H, Xu H, Cheng S, Yu C, Wu J, Meng K, Xie G. Response of soil fungi to textile dye contamination. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024:124577. [PMID: 39032546 DOI: 10.1016/j.envpol.2024.124577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/30/2024] [Accepted: 07/18/2024] [Indexed: 07/23/2024]
Abstract
This study examines the impact of textile dye contamination on the structure of soil fungal communities near a Shaoxing textile dye factory. We quantified the concentrations of various textile dyes, including anthraquinone azodye and phthalocyanine, which ranged from 20.20 to 140.62 mg kgˆ-1, 102.01 to 698.12 mg kgˆ-1, and 7.78 to 42.65 mg kgˆ-1, respectively, within a 1000 m radius of the factory. Our findings indicate that as dye concentration increases, the biodiversity of soil fungi, as measured by the Chao1 index, decreases significantly, highlighting the profound influence of dye contamination on fungal community structure. Additionally, microbial correlation network analysis revealed a reduction in fungal interactions correlating with increased dye concentrations. We also observed that textile dyes suppressed carbon and nitrogen metabolism in fungi while elevating the transcription levels of antioxidant-related genes. Enzymes such as lignin peroxidase (LiP), manganese peroxidase (MnP), laccase (Lac), dye-decolorizing peroxidases (DyPs), and versatile peroxidase (VP) were upregulated in contaminated soils, underscoring the critical role of fungi in dye degradation. These insights contribute to the foundational knowledge required for developing in situ bioremediation technologies for contaminated farmlands.
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Affiliation(s)
- Qi Peng
- School of Life Sciences, Shaoxing University, Shaoxing, 312000, China
| | - Huajun Zheng
- School of Life Sciences, Shaoxing University, Shaoxing, 312000, China
| | - Hangxi Xu
- School of Life Sciences, Shaoxing University, Shaoxing, 312000, China
| | - Shuangqi Cheng
- School of Life Sciences, Shaoxing University, Shaoxing, 312000, China
| | - Chaohua Yu
- Shaoxing Testing Institute of Food and Drug, National Center for Quality Inspection and Testing of Chinese Rice Wine, Shaoxing, 312000, China
| | - Jianjiang Wu
- Shaoxing Testing Institute of Quality and Technical Supervision, Shaoxing, 312000, China
| | - Kai Meng
- School of Life Sciences, Shaoxing University, Shaoxing, 312000, China
| | - Guangfa Xie
- Pollution Exposure and Health Intervention of Zhejiang Province, College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China.
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Jia B, Mao H, Liang Y, Chen J, Jia L, Zhang M, Li XG. Salinity decreases the contribution of microbial necromass to soil organic carbon pool in arid regions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172786. [PMID: 38677417 DOI: 10.1016/j.scitotenv.2024.172786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/07/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Saline soils are widely distributed in arid areas but there is a lack of mechanistic understanding on the effect of salinity on the formation and biochemical composition of soil organic carbon (SOC). We investigated the effects of salinity on the accumulation of microbial necromass under natural vegetation and in cropland in salt-affected arid areas stretching over a 1200-km transect in northwest China. Under both natural vegetation and cropland, microbial physiological activity (indicated by microbial biomass carbon normalized enzymatic activity) decreased sharply where the electrical conductivity approached 4 ds m-1 (a threshold to distinguish between saline and non-saline soils), but microbial biomass was only slightly affected by salinity. These indicated that a larger proportion of microbes could be inactive or dormant in saline soils. The contribution of fungal necromass C to SOC decreased but the contribution of bacterial necromass C to the SOC increased with increasing soil salinity. Adding fungal and bacterial necromass C together, the contribution of microbial necromass C to SOC in saline soils was 32-39 % smaller compared with non-saline soils. Fungal necromass C took up 85-86 % of microbial necromass C in non-saline soils but this proportion dropped to 60-66 % in saline soils. We suggested that the activity, growth, and turnover rate of microbes slowed by salinity was responsible for the decreased accumulation of fungal necromass in saline compared with non-saline soils, while the increased accumulation of bacterial residue in saline soils could be induced mainly by its slower decomposition. Soil microbial biomass was a poor predictor for the accumulation of microbial necromass in saline soils. We demonstrated a reduced contribution of microbial necromass to SOC and a shift in its composition towards the increase in bacterial origin in saline relative to non-saline soils. We concluded that salinity profoundly changes the biochemistry of SOC in arid regions.
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Affiliation(s)
- Bin Jia
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Han Mao
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Yanmei Liang
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Jie Chen
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Li Jia
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Meilan Zhang
- General Station of Gansu Cultivated Land Quality Construction and Protection, Lanzhou, Gansu 730000, China
| | - Xiao Gang Li
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China.
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Mucsi M, Borsodi AK, Megyes M, Szili-Kovács T. Response of the metabolic activity and taxonomic composition of bacterial communities to mosaically varying soil salinity and alkalinity. Sci Rep 2024; 14:7460. [PMID: 38553497 PMCID: PMC10980690 DOI: 10.1038/s41598-024-57430-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 03/18/2024] [Indexed: 04/02/2024] Open
Abstract
Soil salinity and sodicity is a worldwide problem that affects the composition and activity of bacterial communities and results from elevated salt and sodium contents. Depending on the degree of environmental pressure and the combined effect of other factors, haloalkalitolerant and haloalkaliphilic bacterial communities will be selected. These bacteria play a potential role in the maintenance and restoration of salt-affected soils; however, until recently, only a limited number of studies have simultaneously studied the bacterial diversity and activity of saline-sodic soils. Soil samples were collected to analyse and compare the taxonomic composition and metabolic activity of bacteria from four distinct natural plant communities at three soil depths corresponding to a salinity‒sodicity gradient. Bacterial diversity was detected using 16S rRNA gene Illumina MiSeq amplicon sequencing. Community-level physiological profiles (CLPPs) were analysed using the MicroResp™ method. The genus-level bacterial composition and CLPPs differed significantly in soils with different alkaline vegetation. The surface soil samples also significantly differed from the intermediate and deep soil samples. The results showed that the pH, salt content, and Na+ content of the soils were the main edaphic factors influencing both bacterial diversity and activity. With salinity and pH, the proportion of the phylum Gemmatimonadota increased, while the proportions of Actinobacteriota and Acidobacteriota decreased.
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Affiliation(s)
- Márton Mucsi
- Institute for Soil Sciences, HUN-REN Centre for Agricultural Research, Herman Ottó út 15, Budapest, 1022, Hungary
- Doctoral School of Environmental Sciences, ELTE Eötvös Loránd University, Pázmány P. sétány 1/AC, Budapest, 1117, Hungary
| | - Andrea K Borsodi
- Department of Microbiology, ELTE Eötvös Loránd University, Pázmány P. sétány 1/C, Budapest, 1117, Hungary.
- Institute of Aquatic Ecology, HUN-REN Centre for Ecological Research, Karolina út 29, Budapest, 1113, Hungary.
| | - Melinda Megyes
- Doctoral School of Environmental Sciences, ELTE Eötvös Loránd University, Pázmány P. sétány 1/AC, Budapest, 1117, Hungary
- Department of Microbiology, ELTE Eötvös Loránd University, Pázmány P. sétány 1/C, Budapest, 1117, Hungary
| | - Tibor Szili-Kovács
- Institute for Soil Sciences, HUN-REN Centre for Agricultural Research, Herman Ottó út 15, Budapest, 1022, Hungary.
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Xu D, Yu X, Chen J, Li X, Chen J, Li J. Effects of compost as a soil amendment on bacterial community diversity in saline-alkali soil. Front Microbiol 2023; 14:1253415. [PMID: 37829448 PMCID: PMC10565496 DOI: 10.3389/fmicb.2023.1253415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/23/2023] [Indexed: 10/14/2023] Open
Abstract
Introduction Soil salinization poses a worldwide challenge that hampers agricultural productivity. Methods Employing high-throughput sequencing technology, we conducted an investigation to examine the impact of compost on the diversity of bacterial communities in saline soils. Our study focused on exploring the diversity of bacterial communities in the inter-root soil of plants following composting and the subsequent addition of compost to saline soils. Results Compared to the initial composting stage, Alpha diversity results showed a greater diversity of bacteria during the rot stage. The germination index reaches 90% and the compost reaches maturity. The main bacterial genera in compost maturation stage are Flavobacterium, Saccharomonospora, Luteimonas and Streptomyces. Proteobacteria, Firmicutes, and Actinobacteria were the dominant phyla in the soil after the addition of compost. The application of compost has increased the abundance of Actinobacteria and Chloroflexi by 7.6 and 6.6%, respectively, but decreased the abundance of Firmicutes from 25.12 to 18.77%. Redundancy analysis revealed that soil factors pH, solid urease, organic matter, and total nitrogen were closely related to bacterial communities. Discussion The addition of compost effectively reduced soil pH and increased soil enzyme activity and organic matter content. An analysis of this study provides theoretical support for compost's use as a saline soil amendment.
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Affiliation(s)
- Daolong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Xiaowen Yu
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jin Chen
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Xiufen Li
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, China
| | - Jian Chen
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - JiangHua Li
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, China
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Li X, Sun Q, Yan X, Li P, Lv R. Resistivity responses of sodium sulfate and sodium chloride-type loess under different water and salinity conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:88734-88743. [PMID: 37442925 DOI: 10.1007/s11356-023-28665-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023]
Abstract
Saline loess is widely distributed in Africa, Latin America and Asia and is characterized by wet expansion and dry shrinkage, which has a large impact on the environment. In this study, the electrical resistivity of sodium sulfate loess and sodium chloride loess with moisture content (8-24%) and salt content (0.3-2.7%) was measured by an LCR digital bridge instrument. The experimental results demonstrated a decrease in the resistivity with the increase in moisture and salt content. When the salt content was greater than 0.9%, the rate of reduction in resistivity decreased and showed a tendency to be stable. With the increase in moisture content, the water conductive path changes from water in diffusion double layer (DDL) to capillary water and finally to gravity water, which in turn leads to a gradual decrease in the rate of reduction in resistivity. At the same salt content, the resistivity of sulfate loess is higher than that of chloride loess. This study analyses the resistivity changes of two kinds of salt-bearing loess under different water and salinity conditions, which has certain guiding significance for environmental monitoring and pollutant assessment based on resistivity data.
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Affiliation(s)
- Xiaoran Li
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China
| | - Qiang Sun
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China
- Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi'an, 710054, China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xi'an, 710054, China
| | - Xusheng Yan
- Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai, 200092, China.
| | - Pengfei Li
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China
| | - Rui Lv
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China
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Mundra S, Shockey J, Morsy M. Editorial: Plant microbiome: Ecology, functions, and application trends. FRONTIERS IN PLANT SCIENCE 2023; 14:1175556. [PMID: 36959951 PMCID: PMC10029725 DOI: 10.3389/fpls.2023.1175556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Affiliation(s)
- Sunil Mundra
- Department of Biology, College of Science, United Arab Emirates University, Al−Ain, Abu−Dhabi, United Arab Emirates
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al−Ain, United Arab Emirates
| | - Jay Shockey
- United States Department of Agriculture, Agricultural Research Service, Southern Regional Research Center, New Orleans, LA, United States
| | - Mustafa Morsy
- Department of Biological and Environmental Sciences, University of West Alabama, Livingston, AL, United States
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Loganathachetti DS, Alhashmi F, Chandran S, Mundra S. Irrigation water salinity structures the bacterial communities of date palm ( Phoenix dactylifera)-associated bulk soil. FRONTIERS IN PLANT SCIENCE 2022; 13:944637. [PMID: 35991423 PMCID: PMC9388049 DOI: 10.3389/fpls.2022.944637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
The irrigation of date palms (Phoenix dactylifera) with saline groundwater is routinely practiced in the agroecosystems of arid environments because of freshwater scarcity. This leads to salts deposition in topsoil layers and increases soil salinization. However, how different irrigation sources affect soil microbiota is poorly understood. Bulk soil samples were collected from date farms receiving non-saline water and saline groundwater to examine bacterial communities using metabarcoding. Overall, bacterial diversity measures (Shannon diversity index, richness, and evenness) did not vary between irrigation sources. Bacterial communities were structured based on irrigation water sources and were significantly associated with their electrical conductivity. Of 5,155 operational taxonomic units (OTUs), 21.3% were unique to soil irrigated with saline groundwater, 31.5% received non-saline water irrigation, and 47.2% were shared. The Proteobacteria abundance was higher in soil under saline groundwater irrigation while Actinobacteriota abundance was lower. A compositional shift at the genera level was also evident; the abundance of Subgroup_10 and Mycobacterium was higher under saline groundwater irrigation. Mycobacterium was a key indicator of OTU under saline groundwater irrigation while Solirubrobacter was an indicator of non-saline water irrigation. Functional gene analyses showed enrichment of fatty acid, cell wall, and starch biosynthesis pathways in soil under saline groundwater irrigation. These findings provide insights into how "salinity filtering" influences bacterial communities, key taxa, and the potential metabolic function in soil under increasing irrigation water salinities, and have broad implications for arid agroecosystems.
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Affiliation(s)
| | - Fardous Alhashmi
- Department of Biology, College of Science, United Arab Emirate University, Al Ain, United Arab Emirates
| | - Subha Chandran
- Department of Biology, College of Science, United Arab Emirate University, Al Ain, United Arab Emirates
| | - Sunil Mundra
- Department of Biology, College of Science, United Arab Emirate University, Al Ain, United Arab Emirates
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain, United Arab Emirates
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Gui H, Fan L, Wang D, Yan P, Li X, Pang Y, Zhang L, Zamanian K, Shi L, Xu J, Han W. Variations in Soil Nutrient Dynamics and Bacterial Communities After the Conversion of Forests to Long-Term Tea Monoculture Systems. Front Microbiol 2022; 13:896530. [PMID: 35814650 PMCID: PMC9263701 DOI: 10.3389/fmicb.2022.896530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/08/2022] [Indexed: 01/04/2023] Open
Abstract
The soil microbial community is a key indicator to evaluate the soil health and productivities in agricultural ecosystems. Monoculture and conversions of forests to tea plantations have been widely applied in tea plantation globally, but long-term monoculture of tea plantation could lead to soil degradation and yield decline. Understanding how long-term monoculture systems influence the soil health and ecosystem functions in tea plantation is of great importance for soil environment management. In this study, through the comparison of three independent tea plantations across eastern China composed of varying stand ages (from 3 to 90 years after conversion from forest), we found that long-term tea monoculture led to significant increases in soil total organic carbon (TOC) and microbial nitrogen (MBN). Additionally, the structure, function, and co-occurrence network of soil bacterial communities were investigated by pyrosequencing 16S rRNA genes. The pyrosequencing analysis revealed that the structures and functions of soil bacterial communities were significantly affected by different stand ages, but sampling sites and land-use conversion (from forest to tea plantation) had stronger effects than stand age on the diversity and structure of soil bacterial communities. Soil bacterial diversity can be improved with increasing stand ages in tea plantation. Further RDA analysis revealed that the C and N availability improvement in tea plantation soils led to the variation of structure and function in soil bacterial communities. Moreover, co-occurrence network analysis of soil bacterial communities also demonstrated that interactions among soil bacteria taxa were strengthened with increasing stand age. Our findings suggest that long-term monoculture with proper managements could be beneficial to soil ecosystems by increasing the C and N content and strengthening bacterial associations in tea plantations. Overall, this study provides a comprehensive understanding of the impact of land-use change and long-term monoculture stand age on soil environments in tea plantation.
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Affiliation(s)
- Heng Gui
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Centre for Mountain Futures (CMF), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Lichao Fan
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Department of Soil Science of Temperate Ecosystems, University of Göttingen, Göttingen, Germany
- Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- *Correspondence: Lichao Fan,
| | - Donghui Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Peng Yan
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Xin Li
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Yinghua Pang
- Bureau of Agriculture and Rural Affairs of the Yuhang District, Hangzhou, China
| | - Liping Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Kazem Zamanian
- Department of Soil Science of Temperate Ecosystems, University of Göttingen, Göttingen, Germany
- School of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing, China
| | - Lingling Shi
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Centre for Mountain Futures (CMF), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Jianchu Xu
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Centre for Mountain Futures (CMF), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Wenyan Han
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Wenyan Han,
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