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Islam W, Ullah A, Zeng F. Response of total belowground soil biota in Alhagi sparsifolia monoculture at different soil vertical profiles in desert ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:166027. [PMID: 37541502 DOI: 10.1016/j.scitotenv.2023.166027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/01/2023] [Accepted: 08/01/2023] [Indexed: 08/06/2023]
Abstract
The soil organisms are extremely important for the land-based ecosystem. There is a growing interest in studying the variety and composition of the entire underground soil organism community at a large ecological scale. Soil organisms show different patterns in relation to soil physiochemical properties (SPPs) in various ecosystems. However, there is limited knowledge regarding their response to soil vertical profiles (SVPs) in monoculture of Alhagi sparsifolia, which is the primary shrub in the deserts of China, and is well-known for its contributions to sand dune stabilization, traditional Chinese medicine, and forage. Here, we investigated the population dynamics of soil bacteria, fungi, archaea, protists and metazoa across six different SVPs ranging from 0 to 100 cm in monoculture of A. sparsifolia, in its natural desert ecosystem. Our findings indicate that the soil biota communities displayed a declining pattern in the alpha diversity of bacteria, protists, and metazoa with an increase in soil depth. However, the opposite trend was observed for fungi and archaea. The beta diversity of soil biota was significantly affected by SVPs, particularly for metazoa, fungi and protists as revealed by Non-Metric Dimensional Scaling. The most prevalent soil bacterial, fungal, archaeal, protist, and metazoa classes were Actinobacteria, Sordariomycetes, Nitrososphaeria, Filosa-Sarcomonadea, and Nematoda, respectively. The correlation among vertical distribution of the most abundant biotic communities and variations in SPPs exhibited that the variations in total carbon (TC) and total nitrogen (TN) had the most significant influence on bacterial changes, while available potassium (AK) had an impact on fungi. Archaea were affected by TC and pH, protists by the C/N-Ratio and TP, and metazoa by TN, AK, and soil water capacity (SWC). Collectively, our findings provide a new perspective on the vertical distribution and distinct response patterns of soil biota in A. sparsifolia monoculture under natural desert ecosystem of China.
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Affiliation(s)
- Waqar Islam
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele 848300, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Abd Ullah
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele 848300, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fanjiang Zeng
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele 848300, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Wang Y, Zhang X, Lou Z, An X, Li X, Jiang X, Wang W, Zhao H, Fu M, Cui Z. The effects of adding exogenous lignocellulose degrading bacteria during straw incorporation in cold regions on degradation characteristics and soil indigenous bacteria communities. Front Microbiol 2023; 14:1141545. [PMID: 37234521 PMCID: PMC10206022 DOI: 10.3389/fmicb.2023.1141545] [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: 01/10/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
Low temperature is one of the bottleneck factors that limits the degradation of straw during rice straw incorporation. Determining strategies to promote the efficient degradation of straw in cold regions has become a highly active research area. This study was to investigate the effect of rice straw incorporation by adding exogenous lignocellulose decomposition microbial consortiums at different soil depths in cold regions. The results showed that the lignocellulose was degraded the most efficiently during straw incorporation, which was in deep soil with the full addition of a high-temperature bacterial system. The composite bacterial systems changed the indigenous soil microbial community structure and diminished the effect of straw incorporation on soil pH, it also significantly increased rice yield and effectively enhanced the functional abundance of soil microorganisms. The predominant bacteria SJA-15, Gemmatimonadaceae, and Bradyrhizobium promoted straw degradation. The concentration of bacterial system and the depth of soil had significantly positive correlations on lignocellulose degradation. These results provide new insights and a theoretical basis for the changes in the soil microbial community and the application of lignocellulose-degrading composite microbial systems with straw incorporation in cold regions.
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Affiliation(s)
- Yunlong Wang
- College of Agronomy, Yanbian University, Yanji, China
| | - Xuelian Zhang
- College of Agronomy, Yanbian University, Yanji, China
| | - Zixi Lou
- College of Agronomy, Yanbian University, Yanji, China
| | - Xiaoya An
- College of Agronomy, Yanbian University, Yanji, China
| | - Xue Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Xinbo Jiang
- College of Agronomy, Yanbian University, Yanji, China
| | - Weidong Wang
- Heilongjiang Bayi Agricultural University, Daqing, China
| | - Hongyan Zhao
- College of Agronomy, Yanbian University, Yanji, China
| | - Minjie Fu
- College of Agronomy, Yanbian University, Yanji, China
| | - Zongjun Cui
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
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Fallah N, Tayyab M, Yang Z, Pang Z, Zhang C, Lin Z, Stewart LJ, Ntambo MS, Abubakar AY, Lin W, Zhang H. Free-living bacteria stimulate sugarcane growth traits and edaphic factors along soil depth gradients under contrasting fertilization. Sci Rep 2023; 13:6288. [PMID: 37072423 PMCID: PMC10113235 DOI: 10.1038/s41598-022-25807-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 12/05/2022] [Indexed: 05/03/2023] Open
Abstract
Free-living bacterial community and abundance have been investigated extensively under different soil management practices. However, little is known about their nitrogen (N) fixation abilities, and how their contributions to N budgets impact plant growth, yield, and carbon (C) and N cycling enzymes in a long-term consecutive sugarcane monoculture farming system, under contrasting amendments, along different soil horizons. Here, nifH gene amplicon was used to investigate diazotrophs bacterial community and abundance by leveraging high-throughput sequencing (HTS). Moreover, edaphic factors in three soil depths (0-20, 20-40, and 40-60 cm) under control (CK), organic matter (OM), biochar (BC), and filter mud (FM) amended soils were investigated. Our analysis revealed that β-glucosidase activity, acid phosphatase activity, ammonium (NH4+-N), nitrate (NO3-N), total carbon (TC), total nitrogen (TN), and available potassium (AK) were considerably high in 0-20 cm in all the treatments. We also detected a significantly high proportion of Proteobacteria and Geobacter in the entire sample, including Anabaena and Enterobacter in 0-20 cm soil depth under the BC and FM amended soils, which we believed were worthy of promoting edaphic factors and sugarcane traits. This phenomenon was further reinforced by network analysis, where diazotrophs bacteria belonging to Proteobacteria exhibited strong and positive associations soil electrical conductivity (EC), soil organic matter content (SOM) available phosphorus (AP), TN, followed by NH4+-N and NO3-N, a pattern that was further validated by Mantel test and Pearson's correlation coefficients analyses. Furthermore, some potential N-fixing bacteria, including Burkholderia, Azotobacter, Anabaena, and Enterobacter exhibited a strong and positive association with sugarcane agronomic traits, namely, sugarcane stalk, ratoon weight, and chlorophyll content. Taken together, our findings are likely to broaden our understanding of free-living bacteria N-fixation abilities, and how their contributions to key soil nutrients such as N budgets impact plant growth and yield, including C and N cycling enzymes in a long-term consecutive sugarcane monoculture farming system, under contrasting amendments, along different soil horizons.
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Affiliation(s)
- Nyumah Fallah
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agro-Ecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Muhammad Tayyab
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agro-Ecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ziqi Yang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ziqin Pang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agro-Ecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Caifang Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Zhaoli Lin
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lahand James Stewart
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Mbuya Sylvain Ntambo
- Département de Phytotechnie, Faculté des Sciences Agronominiques, Université de Kolwezi, Kolwezi, Democratic Republic of Congo
| | - Ahmad Yusuf Abubakar
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agro-Ecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Hua Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Wang M, Qi X, Shi Y, Zhao J, Ahmad S, Akhtar K, Chen B, Lian T, He B, Wen R. Sugarcane straw returning is an approaching technique for the improvement of rhizosphere soil functionality, microbial community, and yield of different sugarcane cultivars. Front Microbiol 2023; 14:1133973. [PMID: 36998394 PMCID: PMC10043380 DOI: 10.3389/fmicb.2023.1133973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 02/24/2023] [Indexed: 03/15/2023] Open
Abstract
Sugarcane straw returned to the field has rapidly increased due to the bane on straw burning in China. Straw returning of new sugarcane cultivars has been practiced in the fields. Still, its response has not been explored on soil functionality, microbial community and yield of different sugarcane cultivars. Therefore, a comparison was made between an old sugarcane cultivar ROC22 and a new sugarcane cultivar Zhongzhe9 (Z9). The experimental treatments were: without (R, Z), with straw of the same cultivar (RR, ZZ), and with straw of different cultivars (RZ, ZR). Straw returning improved the contents of soil total nitrogen (TN by 73.21%), nitrate nitrogen (NO3—N by 119.61%), soil organic carbon (SOC by 20.16%), and available potassium (AK by 90.65%) at the jointing stage and were not significant at the seedling stage. The contents of NO3—N was 31.94 and 29.58%, available phosphorus (AP 53.21 and 27.19%), and available potassium (AK 42.43 and 11.92%) in RR and ZZ were more than in RZ and ZR. Straw returning with the same cultivar (RR, ZZ) significantly increased the richness and diversity of the rhizosphere microbial community. The microbial diversity of cultivar Z9 (treatment Z) was greater than that of cultivar ROC22 (Treatment R). In the rhizosphere, the relative abundance of beneficial microorganisms Gemmatimonadaceae, Trechispora, Streptomyces, Chaetomium, etc., increased after the straw returned. Sugarcane straw enhanced the activity of Pseudomonas and Aspergillus and thus increased the yield of sugarcane., The richness and diversity of the rhizosphere microbial community of Z9 increased at maturity. In ROC22, bacterial diversity increased, and fungal diversity decreased. These findings collectively suggested that the impact of Z9 straw returning was more beneficial than ROC22 on the activity of rhizosphere microorganism’s soil functionality and sugarcane production.
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Affiliation(s)
- Mengrong Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
| | - Xiaohang Qi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
| | - Yujie Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
| | - Junyang Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
| | - Shakeel Ahmad
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
| | - Kashif Akhtar
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
| | - Baoshan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, China
| | - Tengxiang Lian
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Bing He
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, China
- *Correspondence: Bing He,
| | - Ronghui Wen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Ministry and Province Co-sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning, China
- Ronghui Wen,
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Aqeel M, Ran J, Hu W, Irshad MK, Dong L, Akram MA, Eldesoky GE, Aljuwayid AM, Chuah LF, Deng J. Plant-soil-microbe interactions in maintaining ecosystem stability and coordinated turnover under changing environmental conditions. CHEMOSPHERE 2023; 318:137924. [PMID: 36682633 DOI: 10.1016/j.chemosphere.2023.137924] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/07/2023] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Ecosystem functions directly depend upon biophysical as well as biogeochemical reactions occurring at the soil-microbe-plant interface. Environment is considered as a major driver of any ecosystem and for the distributions of living organisms. Any changes in climate may potentially alter the composition of communities i.e., plants, soil microbes and the interactions between them. Since the impacts of global climate change are not short-term, it is indispensable to appraise its effects on different life forms including soil-microbe-plant interactions. This article highlights the crucial role that microbial communities play in interacting with plants under environmental disturbances, especially thermal and water stress. We reviewed that in response to the environmental changes, actions and reactions of plants and microbes vary markedly within an ecosystem. Changes in environment and climate like warming, CO2 elevation, and moisture deficiency impact plant and microbial performance, their diversity and ultimately community structure. Plant and soil feedbacks also affect interacting species and modify community composition. The interactive relationship between plants and soil microbes is critically important for structuring terrestrial ecosystems. The anticipated climate change is aggravating the living conditions for soil microbes and plants. The environmental insecurity and complications are not short-term and limited to any particular type of organism. We have appraised effects of climate change on the soil inhabiting microbes and plants in a broader prospect. This article highlights the unique qualities of tripartite interaction between plant-soil-microbe under climate change.
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Affiliation(s)
- Muhammad Aqeel
- State Key Laboratory of Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, PR China
| | - Jinzhi Ran
- State Key Laboratory of Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, PR China
| | - Weigang Hu
- State Key Laboratory of Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, PR China
| | - Muhammad Kashif Irshad
- Department of Environmental Sciences, Government College University Faisalabad, (38000), Pakistan
| | - Longwei Dong
- State Key Laboratory of Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, PR China
| | - Muhammad Adnan Akram
- State Key Laboratory of Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, PR China; Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, Leuven 3001, Belgium
| | - Gaber E Eldesoky
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ahmed Muteb Aljuwayid
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Lai Fatt Chuah
- Faculty of Maritime Studies, Universiti Malaysia Terengganu, Terengganu, Malaysia.
| | - Jianming Deng
- State Key Laboratory of Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, PR China.
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Cui H, Chen P, He C, Jiang Z, Lan R, Yang J. Soil microbial community structure dynamics shape the rhizosphere priming effect patterns in the paddy soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159459. [PMID: 36252670 DOI: 10.1016/j.scitotenv.2022.159459] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/20/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Microbial community structure plays a crucial part in soil organic carbon (SOC) decomposition and variation of rhizosphere priming effects (RPEs) during plant growth. However, it is still uncertain how bacterial community structure regulates RPEs in soil and how RPE patterns respond to plant growth. Therefore, we conducted an experiment to examine the RPE response to plant growth and nitrogen (N) addition (0 (N0), 150 (N150), and 300 (N300) kg N ha-1) using the 13C natural abundance method in a C3 soil (paddy soil) - C4 plant (maize, Zea mays L.) system; we then explored the underlying biotic mechanisms using 16S rRNA sequencing techniques. Networks were constructed to identify keystone taxa and to analyze the correlations between network functional modules of bacterial community and C decomposition. The results indicated that negative and positive RPEs occurred on Day 30 and Day 75 after maize planting, respectively. Bacterial community structure significantly changed and tended to shift from r-strategists toward K-strategists with changing labile C: N stoichiometry and soil pH during plant growth stages. The different network modules of bacterial community were aggregated in response to RPE pattern variation. Caulobacteraceae, Bacillus, and Chitinophagaceae were keystone taxa on Day 30, while Gemmatimonas, Candidatus Koribacter, and Xanthobacteraceae were keystone taxa on Day 75. Moreover, keystone taxa with different C utilization strategies were significantly different between the two growth stages and related closely to different RPE patterns. This study provides deeper insights into the network structure of bacterial communities corresponding to RPE patterns and emphasizes the significance of keystone taxa in RPE variation.
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Affiliation(s)
- Hao Cui
- Institute of Environment Pollution Control and Treatment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Pengfei Chen
- Institute of Environment Pollution Control and Treatment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Chao He
- Institute of Environment Pollution Control and Treatment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Zhenhui Jiang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Rui Lan
- Environmental Monitoring Station of Manasi, Bureau of Ecology and Environment, Hui Autonomous Prefecture of Changji, the Xinjiang Uygur Autonomous Region 832200, China
| | - Jingping Yang
- Institute of Environment Pollution Control and Treatment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China.
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Miller AZ, Jiménez-Morillo NT, Coutinho ML, Gazquez F, Palma V, Sauro F, Pereira MF, Rull F, Toulkeridis T, Caldeira AT, Forti P, Calaforra JM. Organic geochemistry and mineralogy suggest anthropogenic impact in speleothem chemistry from volcanic show caves of the Galapagos. iScience 2022; 25:104556. [PMID: 35789844 PMCID: PMC9250005 DOI: 10.1016/j.isci.2022.104556] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 05/09/2022] [Accepted: 06/02/2022] [Indexed: 11/22/2022] Open
Abstract
The network of lava tubes is one of the most unexploited natural wonders of the Galapagos Islands. Here, we provide the first morphological, mineralogical, and biogeochemical assessment of speleothems from volcanic caves of the Galapagos to understand their structure, composition, and origin, as well as to identify organic molecules preserved in speleothems. Mineralogical analyses revealed that moonmilk and coralloid speleothems from Bellavista and Royal Palm Caves were composed of calcite, opal-A, and minor amounts of clay minerals. Extracellular polymeric substances, fossilized bacteria, silica microspheres, and cell imprints on siliceous minerals evidenced microbe-mineral interactions and biologically-mediated silica precipitation. Alternating depositional layers between siliceous and carbonate minerals and the detection of biomarkers of surface vegetation and anthropogenic stressors indicated environmental and anthropogenic changes (agriculture, human waste, and cave visits) on these unique underground resources. Stable isotope analysis and Py-GC/MS were key to robustly identify biomarkers, allowing for implementation of future protection policies. Speleothems from lava tubes of Galapagos are archives of anthropogenic stressors Moonmilk and coralloids are composed of calcite, opal-A, and clay minerals Microbe-mineral interactions promote mineral dissolution and precipitation Biomarkers of surface vegetation and anthropogenic impacts detected by Py-GC/MS
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Affiliation(s)
- Ana Z. Miller
- Instituto de Recursos Naturales y Agrobiologia de Sevilla (IRNAS-CSIC), Seville, Spain
- HERCULES Laboratory, University of Évora, Évora, Portugal
- Corresponding author
| | - Nicasio T. Jiménez-Morillo
- MED—Mediterranean Institute for Agriculture, Environment and Development, University of Évora, Évora, Portugal
| | | | - Fernando Gazquez
- Department of Biology and Geology, University of Almería, Almería, Spain
- Andalusian Centre for the Monitoring and Assessment of Global Change (CAESCG), University of Almería, Almería, Spain
| | - Vera Palma
- HERCULES Laboratory, University of Évora, Évora, Portugal
| | - Francesco Sauro
- Department of Earth Sciences and Environmental Geology, University of Bologna, Bologna, Italy
| | | | - Fernando Rull
- CSIC-CAB Associated Unit ERICA, Department of Condensed Matter Physics, Mineralogy and Crystallography, University of Valladolid, Boecillo, Spain
| | | | | | - Paolo Forti
- Department of Earth Sciences and Environmental Geology, University of Bologna, Bologna, Italy
| | - José M. Calaforra
- Department of Biology and Geology, University of Almería, Almería, Spain
- Andalusian Centre for the Monitoring and Assessment of Global Change (CAESCG), University of Almería, Almería, Spain
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Influence of Intraspecific Competition Stress on Soil Fungal Diversity and Composition in Relation to Tree Growth and Soil Fertility in Sub-Tropical Soils under Chinese Fir Monoculture. SUSTAINABILITY 2021. [DOI: 10.3390/su131910688] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Soil microorganisms provide valuable ecosystem services, such as nutrient cycling, soil remediation, and biotic and abiotic stress resistance. There is increasing interest in exploring total belowground biodiversity across ecological scales to understand better how different ecological aspects, such as stand density, soil properties, soil depth, and plant growth parameters, influence belowground communities. In various environments, microbial components of belowground communities, such as soil fungi, respond differently to soil features; however, little is known about their response to standing density and vertical soil profiles in a Chinese fir monoculture plantation. This research examined the assemblage of soil fungal communities in different density stands (high, intermediate, and low) and soil depth profiles (0–20 cm and 20–40 cm). This research also looked into the relationship between soil fungi and tree canopy characteristics (mean tilt angle of the leaf (MTA), leaf area index (LAI), and canopy openness index (DIFN)), and general growth parameters, such as diameter, height, and biomass. The results showed that low-density stand soil had higher fungal alpha diversity than intermediate- and high-density stand soils. Ascomycota, Basidiomycota, Mucromycota, and Mortierellomycota were the most common phyla of the soil fungal communities, in that order. Saitozyma, Penicillium, Umbelopsis, and Talaromyces were the most abundant fungal genera. Stand density composition was the dominant factor in changing fungal community structure compared to soil properties and soil depth profiles. The most significant soil elements in soil fungal community alterations were macronutrients. In addition, the canopy openness index and fungal community structure have a positive association in the low-density stand. Soil biota is a nutrient cycling driver that can promote better plant growth in forest ecosystems by supporting nutrient cycling. Hence, this research will be critical in understanding soil fungal dynamics, improving stand growth and productivity, and improving soil quality in intensively managed Chinese fir plantations.
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Tayyab M, Yang Z, Zhang C, Islam W, Lin W, Zhang H. Sugarcane monoculture drives microbial community composition, activity and abundance of agricultural-related microorganisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:48080-48096. [PMID: 33904129 DOI: 10.1007/s11356-021-14033-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/16/2021] [Indexed: 05/28/2023]
Abstract
Sugarcane monoculture (SM) often leads to soil problems, like soil acidification, degradation, and soil-borne diseases, which ultimately pose a negative impact on agricultural productivity and sustainability. Understanding the change in microbial communities' composition, activities, and functional microbial taxa associated with the plant and soil under SM is unclear. Using multidisciplinary approaches such as Illumina sequencing, measurements of soil properties, and enzyme activities, we analyzed soil samples from three sugarcane fields with different monoculture histories (1-, 2-, and 4-year cultivation times, respectively). We observed that SM induced soil acidity and had adverse effects on soil fertility, i.e., soil organic matter (OM), total nitrogen (TN), total carbon (TC), and available potassium (AK), as well as enzyme activities indicative for carbon, phosphorus, and nitrogen cycles. Non-metric multidimensional scaling (NMDS) analysis showed that SM time greatly affected soil attribute patterns. We observed strong correlation among soil enzymes activities and soil physiochemical properties (soil pH, OM, and TC). Alpha diversity analysis showed a varying response of the microbes to SM time. Bacterial diversity increased with increasing oligotrophs (e.g., Acidobacteria and Chloroflexi), while fungal diversity decreased with reducing copiotrophs (e.g., Ascomycota). β-Diversity analysis showed that SM time had a great influence on soil microbial structure and soil properties, which led to the changes in major components of microbial structure (soil pH, OM, TC, bacteria and soil pH; TC, fungi). Additionally, SM time significantly stimulated (four bacterial and ten fungal) and depleted (12 bacterial and three fungal) agriculturally and ecologically important microbial genera that were strongly and considerably correlated with soil characteristics (soil pH, OM, TC, and AK). In conclusion, SM induces soil acidity, reduces soil fertility, shifts microbial structure, and reduces its activity. Furthermore, most beneficial bacterial genera decreased significantly due to SM, while beneficial fungal genera showed a reverse trend. Therefore, mitigating soil acidity, improving soil fertility, and soil enzymatic activities, including improved microbial structure with beneficial service to plants and soil, can be an effective measure to develop a sustainable sugarcane cropping system.
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Affiliation(s)
- Muhammad Tayyab
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Fujian Provincial Key Laboratory of Agro-ecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 35002, China
| | - Ziqi Yang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Caifang Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Waqar Islam
- College of Geography, Fujian Normal University, Fuzhou, 350007, China
| | - Wenxiong Lin
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- Fujian Provincial Key Laboratory of Agro-ecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 35002, China.
| | - Hua Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Deng Q, Yu T, Zeng Z, Ashraf U, Shi Q, Huang S, Lian T, Chen J, Muzaffar W, Shen W. Silicon Application Modulates the Growth, Rhizosphere Soil Characteristics, and Bacterial Community Structure in Sugarcane. FRONTIERS IN PLANT SCIENCE 2021; 12:710139. [PMID: 34490012 PMCID: PMC8417577 DOI: 10.3389/fpls.2021.710139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
Silicon (Si) deficiency, caused by acidic soil and rainy climate, is a major constraint for sugarcane production in southern China. Si application generally improves sugarcane growth; however, there are few studies on the relationships between enhanced plant growth, changes in rhizosphere soil, and bacterial communities. A field experiment was conducted to measure sugarcane agronomic traits, plant nutrient contents, rhizosphere soil enzyme activities and chemical properties, and the rhizosphere bacterial community diversity and structure of three predominant sugarcane varieties under two Si treatments, i.e., 0 and 200 kg of silicon dioxide (SiO2) ha-1 regarded as Si0 and Si200, respectively. Results showed that Si application substantially improved the sugarcane stalk fresh weight and Si, phosphorus (P), and potassium (K) contents comparing to Si0, and had an obvious impact on rhizosphere soil pH, available Si (ASi), available P (AP), available K (AK), total phosphorus (TP), and the activity of acid phosphatase. Furthermore, the relative abundances of Proteobacteria showed a remarkable increase in Si200, which may be the dominant group in sugarcane growth under Si application. Interestingly, the AP was noticed as a major factor that caused bacterial community structure differences between the two Si treatments according to canonical correspondence analysis (CCA). In addition, the association network analysis indicated that Si application enriched the rhizosphere bacterial network, which could be beneficial to sugarcane growth. Overall, appropriate Si application, i.e., 200 kg SiO2 ha-1 promoted sugarcane growth, changed rhizosphere soil enzyme activities and chemical properties, and bacterial community structures.
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Affiliation(s)
- Quanqing Deng
- College of Agriculture, South China Agricultural University, Guangzhou, China
- Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, China
| | - Taobing Yu
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, China
| | - Zhen Zeng
- College of Agriculture, South China Agricultural University, Guangzhou, China
- Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, China
| | - Umair Ashraf
- Division of Science and Technology, Department of Botany, University of Education, Lahore, Pakistan
| | - Qihan Shi
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, China
| | - Suihua Huang
- College of Agriculture, South China Agricultural University, Guangzhou, China
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, China
- Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture, Guangzhou, China
| | - Tengxiang Lian
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong, China
| | - Jianwen Chen
- College of Agriculture, South China Agricultural University, Guangzhou, China
- Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, China
| | - Wardah Muzaffar
- Sugarcane Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Wankuan Shen
- College of Agriculture, South China Agricultural University, Guangzhou, China
- Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, China
- Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture, Guangzhou, China
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Maquia ISA, Fareleira P, Videira e. Castro I, Soares R, Brito DRA, Mbanze AA, Chaúque A, Máguas C, Ezeokoli OT, Ribeiro NS, Marques I, Ribeiro-Barros AI. The Nexus between Fire and Soil Bacterial Diversity in the African Miombo Woodlands of Niassa Special Reserve, Mozambique. Microorganisms 2021; 9:microorganisms9081562. [PMID: 34442641 PMCID: PMC8400031 DOI: 10.3390/microorganisms9081562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/15/2021] [Accepted: 07/19/2021] [Indexed: 12/14/2022] Open
Abstract
(1) Background: the Miombo woodlands comprise the most important vegetation from southern Africa and are dominated by tree legumes with an ecology highly driven by fires. Here, we report on the characterization of bacterial communities from the rhizosphere of Brachystegia boehmii in different soil types from areas subjected to different regimes. (2) Methods: bacterial communities were identified through Illumina MiSeq sequencing (16S rRNA). Vigna unguiculata was used as a trap to capture nitrogen-fixing bacteria and culture-dependent methods in selective media were used to isolate plant growth promoting bacteria (PGPB). PGP traits were analysed and molecular taxonomy of the purified isolates was performed. (3) Results: Bacterial communities in the Miombo rhizosphere are highly diverse and driven by soil type and fire regime. Independent of the soil or fire regime, the functional diversity was high, and the different consortia maintained the general functions. A diverse pool of diazotrophs was isolated, and included symbiotic (e.g., Mesorhizobium sp., Neorhizobium galegae, Rhizobium sp., and Ensifer adhaerens), and non-symbiotic (e.g., Agrobacterium sp., Burkholderia sp., Cohnella sp., Microvirga sp., Pseudomonas sp., and Stenotrophomonas sp.) bacteria. Several isolates presented cumulative PGP traits. (4) Conclusions: Although the dynamics of bacterial communities from the Miombo rhizosphere is driven by fire, the maintenance of high levels of diversity and functions remain unchanged, constituting a source of promising bacteria in terms of plant-beneficial activities such as mobilization and acquisition of nutrients, mitigation of abiotic stress, and modulation of plant hormone levels.
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Affiliation(s)
- Ivete Sandra Alberto Maquia
- Forest Research Center, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;
- TropiKMan Doctoral Program, NOVA SBE, 2775-405 Carcavelos, Portugal
- Biotechnology Center, Eduardo Mondlane University, Maputo 3453, Mozambique;
| | - Paula Fareleira
- National Institute of Agricultural and Veterinary Research, I.P. (INIAV, I.P), 2780-157 Oeiras, Portugal; (P.F.); (I.V.e.C.); (R.S.)
| | - Isabel Videira e. Castro
- National Institute of Agricultural and Veterinary Research, I.P. (INIAV, I.P), 2780-157 Oeiras, Portugal; (P.F.); (I.V.e.C.); (R.S.)
| | - Ricardo Soares
- National Institute of Agricultural and Veterinary Research, I.P. (INIAV, I.P), 2780-157 Oeiras, Portugal; (P.F.); (I.V.e.C.); (R.S.)
| | - Denise R. A. Brito
- Biotechnology Center, Eduardo Mondlane University, Maputo 3453, Mozambique;
| | | | - Aniceto Chaúque
- Faculty of Agronomy and Forest Engineering, Eduardo Mondlane University, Maputo 3453, Mozambique; (A.C.); (N.S.R.)
| | - Cristina Máguas
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal;
| | - Obinna T. Ezeokoli
- Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein 9300, South Africa;
| | - Natasha Sofia Ribeiro
- Faculty of Agronomy and Forest Engineering, Eduardo Mondlane University, Maputo 3453, Mozambique; (A.C.); (N.S.R.)
| | - Isabel Marques
- Forest Research Center, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;
- Correspondence: (I.M.); (A.I.R.-B.)
| | - Ana I. Ribeiro-Barros
- Forest Research Center, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;
- Correspondence: (I.M.); (A.I.R.-B.)
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12
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Fallah N, Yang Z, Tayyab M, Zhang C, Abubakar AY, Lin Z, Pang Z, Allison A, Zhang H. Depth-dependent influence of biochar application on the abundance and community structure of diazotrophic under sugarcane growth. PLoS One 2021; 16:e0253970. [PMID: 34280207 PMCID: PMC8289083 DOI: 10.1371/journal.pone.0253970] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 06/16/2021] [Indexed: 12/22/2022] Open
Abstract
Despite progress in understanding diazotrophic distribution in surface soils, few studies have investigated the distribution of diazotrophic bacteria in deeper soil layers. Here, we leveraged high-throughput sequencing (HTS) of nifH genes obtained to assess the influence of biochar amended soil (BC) and control (CK), and soil depths (0–20, 20–40 and 40–60 cm) on diazotrophic abundance and community structures, soil enzyme activities and physio-chemical properties. Multivariate ANOVA analysis revealed that soil depth had profound impact on majority of the soil parameters measured than fertilization. Although soil physio-chemical properties, enzymes activities, diazotrophic genera and enriched operational taxonomic units (OTUs) were significantly influenced across the entire soil profiles, we also observed that BC amended soil significantly increased cane stalk height and weight, nitrate (NO3-), ammonium (NH4+), organic matter (OM), total carbon (TC) and available potassium (AK), and enhanced diazotrophic genera in soil depth 0–20 cm compared to CK treatment. Soil TC, total nitrogen (TN), OM and NH4+ were the major impact factors shifting diazotrophic community structures in soil depth 0–20 cm. Overall, these results were more pronounced in 0–20 cm soil depth in BC than CK treatment.
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Affiliation(s)
- Nyumah Fallah
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ziqi Yang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Muhammad Tayyab
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Caifang Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ahmad Yusuf Abubakar
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Zhaoli Lin
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ziqin Pang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Americ Allison
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Hua Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
- * E-mail:
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13
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Zhang C, Lin Z, Que Y, Fallah N, Tayyab M, Li S, Luo J, Zhang Z, Abubakar AY, Zhang H. Straw retention efficiently improves fungal communities and functions in the fallow ecosystem. BMC Microbiol 2021; 21:52. [PMID: 33596827 PMCID: PMC7890633 DOI: 10.1186/s12866-021-02115-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 02/04/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Straw retention is a substitute for chemical fertilizers, which effectively maintain organic matter and improve microbial communities on agricultural land. The purpose of this study was to provide sufficient information on soil fungal community networks and their functions in response to straw retention. Hence, we used quantitative real-time PCR (qRT-PCR), Illumina MiSeq (ITS rRNA) and FUNGuild to examine ITS rRNA gene populations, soil fungal succession and their functions under control (CK) and sugarcane straw retention (SR) treatments at different soil layers (0-10, 10-20, 20-30, and 30-40 cm) in fallow fields. RESULT The result showed that SR significantly enhanced ITS rRNA gene copy number and Shannon index at 0-10 cm soil depth. Fungi abundance, OTUs number and ACE index decreased with the increasing soil depth. The ANOSIM analysis revealed that the fungal community of SR significantly differed from that of CK. Similarly, significant difference was also observed between topsoil (0-20 cm) and subsoil (20-40 cm). Compared with CK, SR decreased the relative abundance of the pathogen, while increased the proportion of saprotroph. Regarding soil depth, pathogen relative abundance in topsoil was lower than that in subsoil. Besides, both sugarcane straw retention and soil depths (topsoil and subsoil) significantly altered the co-occurrence patterns and fungal keystone taxa closely related to straw decomposition. Furthermore, both SR and topsoil had higher average clustering coefficients (aveCC), negative edges and varied modularity. CONCLUSIONS Overall, straw retention improved α-diversity, network structure and fungal community, while reduced soil pathogenic microbes across the entire soil profile. Thus, retaining straw to improve fungal composition, community stability and their functions, in addition to reducing soil-borne pathogens, can be an essential agronomic practice in developing a sustainable agricultural system.
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Affiliation(s)
- Caifang Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Zhaoli Lin
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Nyumah Fallah
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Muhammad Tayyab
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Shiyan Li
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Jun Luo
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Zichu Zhang
- Fuzhou No.8 High School, Fuzhou, 350000 China
| | - Ahmad Yusuf Abubakar
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Hua Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
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Li X, Yao S, Bian Y, Jiang X, Song Y. The combination of biochar and plant roots improves soil bacterial adaptation to PAH stress: Insights from soil enzymes, microbiome, and metabolome. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123227. [PMID: 32585520 DOI: 10.1016/j.jhazmat.2020.123227] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/12/2020] [Accepted: 06/14/2020] [Indexed: 05/05/2023]
Abstract
Polycyclic aromatic hydrocarbon (PAH) contamination in agricultural soils poses serious stress to the soil microbiome. With the broad application of biochar, however, the co-effects of biochar and plant roots on the bacterial responses to PAH stress remain unclear. Here, the effects of biochar and the rhizosphere on bacterial community structure and functions were analyzed by coupling enzyme activity tests, high-throughput sequencing, and soil metabolomics. The contents of available nutrients and dissolved organic carbon, enzyme activities, and carbon metabolism functions were improved by biochar and plant roots. With the combined effects of biochar and plant roots, sucrose and starch metabolism was mainly impacted, and the soil metabolite diversity decreased. There was a strong co-occurrence network among soil properties, bacterial members, and metabolites in the biochar-amended and rhizosphere soils, favoring bacterial resistance to PAH stress, and consequently, PAH removal. In light of the above results, we suggest that biochar application can efficiently improve bacterial functions in rhizosphere soil, and our results facilitate the development of in situ remediation programs in soil contaminated with PAHs.
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Affiliation(s)
- Xiaona Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Shi Yao
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongrong Bian
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Xin Jiang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Song
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Nanjing, 210008, China; University of the Chinese Academy of Sciences, Beijing, 100049, China.
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15
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Colored Microbial Coatings in Show Caves from the Galapagos Islands (Ecuador): First Microbiological Approach. COATINGS 2020. [DOI: 10.3390/coatings10111134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The Galapagos Islands (Ecuador) have a unique ecosystem on Earth due to their outstanding biodiversity and geological features. This also extends to their subterranean heritage, such as volcanic caves, with plenty of secondary mineral deposits, including coralloid-type speleothems and moonmilk deposits. In this study, the bacterial communities associated with speleothems from two lava tubes of Santa Cruz Island were investigated. Field emission scanning electron microscopy (FESEM) was carried out for the morphological characterization and detection of microbial features associated with moonmilk and coralloid speleothems from Bellavista and Royal Palm Caves. Microbial cells, especially filamentous bacteria in close association with extracellular polymeric substances (EPS), were abundant in both types of speleothems. Furthermore, reticulated filaments and Actinobacteria-like cells were observed by FESEM. The analysis of 16S rDNA revealed the presence of different bacterial phylotypes, many of them associated with the carbon, nitrogen, iron and sulfur cycles, and some others with pollutants. This study gives insights into subsurface microbial diversity of the Galapagos Islands and further shows the interest of the conservation of these subterranean geoheritage sites used as show caves.
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Yang J, Wang S, Guo Z, Deng Y, Xu M, Zhang S, Yin H, Liang Y, Liu H, Miao B, Meng D, Liu X, Jiang L. Spatial Distribution of Toxic Metal(loid)s and Microbial Community Analysis in Soil Vertical Profile at an Abandoned Nonferrous Metal Smelting Site. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E7101. [PMID: 32998275 PMCID: PMC7579518 DOI: 10.3390/ijerph17197101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 01/16/2023]
Abstract
In this study soils at different depths were collected in a Zn smelting site located in Zhuzhou City, China, in order to understand toxic metal(loid)s distribution and microbial community in vertical soil profile at a smelting site. Except Soil properties and metal(loid)s content, the richness and diversity of microbial communities in soil samples were analyzed via high-throughput Illumina sequencing of 16s rRNA gene amplicons. The results showed that the content of As, Pb, Cu, Cd, Zn, and Mn was relatively high in top soil in comparison to subsoil, while the concentration of Cr in subsoil was comparable with that in top soil due to its relative high background value in this soil layer. The bioavailability of Cd, Mn, Zn, and Pb was relative higher than that of As, Cr, and Cu. The diversity of soil microbial communities decreased with increasing depth, which might be ascribed to the decrease in evenness with increase in depth duo to the influence by environmental conditions, such as pH, TK (total potassium), CEC (cation exchange capacity), ORP (oxidation reduction potential), and Bio-Cu (bioavailable copper). The results also found Acidobacteria, Proteobacteria, Firmicutes, and Chloroflexi were dominant phyla in soil samples. At the genus level, Acinetobacter, Pseudomonas, and Gp7 were dominant soil microorganism. Besides, Environmental factors, such as SOM (soil organic matter), pH, Bio-Cu, Bio-Cd (bioavailable cadmium), and Bio-Pb (bioavailable lead), greatly impacted microbial community in surface soil (1-3 m), while ORP, TK, and AN concentration influenced microbial community in the subsoil (4-10 m).
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Affiliation(s)
- Jiejie Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Siqi Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Ziwen Guo
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Yan Deng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Menglong Xu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Siyuan Zhang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Huaqun Yin
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Yili Liang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Hongwei Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Bo Miao
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Delong Meng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Luhua Jiang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (J.Y.); (S.W.); (Z.G.); (Y.D.); (M.X.); (S.Z.); (H.Y.); (Y.L.); (H.L.); (B.M.); (D.M.); (X.L.)
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
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Zheng M, Shi J, Xu C, Han Y, Zhang Z, Han H. Insights into electroactive biofilms for enhanced phenolic degradation of coal pyrolysis wastewater (CPW) by magnetic activated coke (MAC): Metagenomic analysis in attached biofilm and suspended sludge. JOURNAL OF HAZARDOUS MATERIALS 2020; 395:122688. [PMID: 32335283 DOI: 10.1016/j.jhazmat.2020.122688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/14/2020] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
To investigate the role of electroactive biofilms for enhanced phenolic degradation, lignite activated coke (LAC) and MAC were used as carriers in moving-bed biofilm reactor (MBBR) for CPW treatment. In contrast to activated sludge (AS) reactor, the carriers improved degradation performance of MBBR. Although two MBBRs exerted similar degradation capacity with over 92% of COD and 93% phenols removal under the highest phenolics concentration (500 mg/L), the effluent of MAC-based MBBR remained higher biodegradability (BOD5/COD = 0.34 vs 0.18) than that of LAC-based MBBR. Metagenomic analysis revealed that electroactive biofilms determined phenolic degradation of MAC-based MBBR. Primarily, Geobacter (17.33%) started Fe redox cycle on biofilms and developed syntrophy with Syntrophorhabdus (6.47%), which fermented phenols into easily biodegradable substrates. Subsequently, Ignavibacterium (3.38% to 2.52%) and Acidovorax (0.46% to 8.83%) conducted biological electricity from electroactive biofilms to suspended sludge. They synergized with dominated genus in suspended sludge, Alicycliphilus (19.56%) that accounted for phenolic oxidation and nitrate reduction. Consequently, the significantly advantage of Geobater and Syntrophorhabdus was the keystone reason for superior biodegradability maintenance of MAC-based MBBR.
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Affiliation(s)
- Mengqi Zheng
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jingxin Shi
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chunyan Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Yuxing Han
- School of Engineering, South China Agriculture University, Guangzhou 510642, China.
| | - Zhengwen Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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18
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Zheng M, Shi J, Xu C, Ma W, Zhang Z, Zhu H, Han H. Ecological and functional research into microbiomes for targeted phenolic removal in anoxic carbon-based fluidized bed reactor (CBFBR) treating coal pyrolysis wastewater (CPW). BIORESOURCE TECHNOLOGY 2020; 308:123308. [PMID: 32278997 DOI: 10.1016/j.biortech.2020.123308] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
Powdered activated carbon (PAC), lignite activated coke (LAC) and Fe-C carriers were applied to enhance CBFBRs to degrade targeted phenolics. In start-up stage, PAC and LAC equipped CBFBRs with higher environment adaptability and phenolic degradation capacity for phenol (>96%), p-cresol (>91%) and 3, 5-dimethylphenol (>84%) in comparison to Fe-C carrier. In recovery stage, the superior performance was also identified for CBFBRs in basis of PAC and LAC than Fe-C-based reactor. However, the Fe-C carrier assisted CBFBR with more stable degradation performance under impact loading. By comparing microbiomes, significantly enriched Brachymonas (54.80%-68.81%) in CBFBRs exerted primary role for phenolic degradation, and positively contributed to microbial network. Meanwhile, Geobacter in Fe-C-based reactor induced excellent impact resistance by enhancing interspecific electron transfer among microbes. Furthermore, the investigation on functional genes related to phenolic degradation revealed that anaerobic pathway accounted for demethylation procedure, while aerobic pathways dominated the phenolic ring-cleavage process.
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Affiliation(s)
- Mengqi Zheng
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jingxin Shi
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chunyan Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Wencheng Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Zhengwen Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hao Zhu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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