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Zhang L, Vaccari F, Bandini F, Puglisi E, Trevisan M, Lucini L. The short-term effect of microplastics in lettuce involves size- and dose-dependent coordinate shaping of root metabolome, exudation profile and rhizomicrobiome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:174001. [PMID: 38879040 DOI: 10.1016/j.scitotenv.2024.174001] [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: 11/26/2023] [Revised: 06/02/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024]
Abstract
Micro- and nano-plastics (MNPs) in the soil can impact the microbial diversity within rhizospheres and induce modifications in plants' morphological, physiological, and biochemical parameters. However, a significant knowledge gap still needs to be addressed regarding the specific effects of varying particle sizes and concentrations on the comprehensive interplay among soil dynamics, root exudation, and the overall plant system. In this sense, different omics techniques were employed to clarify the mechanisms of the action exerted by four different particle sizes of polyethylene plastics considering four different concentrations on the soil-roots exudates-plant system was studied using lettuce (Lactuca sativa L. var. capitata) as a model plant. The impact of MNPs was investigated using a multi-omics integrated approach, focusing on the tripartite interaction between the root metabolic process, exudation pattern, and rhizosphere microbial modulation. Our results showed that particle size and their concentrations significantly modulated the soil-roots exudates-plant system. Untargeted metabolomics highlighted that fatty acids, amino acids, and hormone biosynthesis pathways were significantly affected by MNPs. Additionally, they were associated with the reduction of rhizosphere bacterial α-diversity, following a size-dependent trend for specific taxa. The omics data integration highlighted a correlation between Pseudomonadata and Actinomycetota phyla and Bacillaceae family (Peribacillus simplex) and the exudation of flavonoids, phenolic acids, and lignans in lettuce exposed to increasing sizes of MNPs. This study provides a novel insight into the potential effects of different particle sizes and concentrations of MNPs on the soil-plant continuum, providing evidence about size- and concentration-dependent effects, suggesting the need for further investigation focused on medium- to long-term exposure.
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Affiliation(s)
- Leilei Zhang
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Filippo Vaccari
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Francesca Bandini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Edoardo Puglisi
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Marco Trevisan
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Piacenza, Italy.
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Batista AM, Pessoa TN, Putti FF, Andreote FD, Libardi PL. Root Influences Rhizosphere Hydraulic Properties through Soil Organic Carbon and Microbial Activity. PLANTS (BASEL, SWITZERLAND) 2024; 13:1981. [PMID: 39065508 PMCID: PMC11281268 DOI: 10.3390/plants13141981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024]
Abstract
Processes of water retention and movement and the hydraulic conductivity are altered in the rhizosphere. The aim of this study was to investigate the physical-hydric properties of soil aggregates in the rhizosphere of annual ryegrass (Lolium multiflorum) cropped in a Kandiudalfic Eutrudox, taking into account aspects related to soil aggregate stability. Soil aggregates from rhizosphere soil (RZS) and soil between plant rows (SBP) were used to determine soil water retention curves (SWRCs) and saturated hydraulic conductivity (Ksat). In addition, properties related to soil aggregate stability, such as water-dispersible clay, soil organic carbon (SOC), and microbial activity, were also assessed. The higher microbial activity observed in the RZS was facilitated by increased SOC and microbial activity, resulting in improved soil aggregation (less water-dispersible clay). For nearly all measured matric potentials, RZS had a higher water content than SBP. This was attributed to the stability of aggregates, increase in SOC content, and the root exudates, which improved soil water retention. The increase in total porosity in RZS was associated with improved soil aggregation, which prevents deterioration of the soil pore space and results in higher Ksat and hydraulic conductivity as a function of the effective relative saturation in RZS compared to SBP.
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Affiliation(s)
- Aline Martineli Batista
- School of Agriculture, São Paulo State University (UNESP), Rua José Barbosa de Barros 1870, Botucatu 18610-307, SP, Brazil;
| | - Thaís Nascimento Pessoa
- Department of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba 13418-900, SP, Brazil; (T.N.P.); (F.D.A.); (P.L.L.)
| | - Fernando Ferrari Putti
- School of Agriculture, São Paulo State University (UNESP), Rua José Barbosa de Barros 1870, Botucatu 18610-307, SP, Brazil;
- School of Sciences and Engineering, São Paulo State University (UNESP), Rua Domingos da Costa Lopes 780, Tupã 17602-496, SP, Brazil
| | - Fernando Dini Andreote
- Department of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba 13418-900, SP, Brazil; (T.N.P.); (F.D.A.); (P.L.L.)
| | - Paulo Leonel Libardi
- Department of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba 13418-900, SP, Brazil; (T.N.P.); (F.D.A.); (P.L.L.)
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Liu G, Gu Z, Li B. Can the artificial exogenous addition really cause an increasing carbon emission driven by microbial community in grassland ecosystems? Front Microbiol 2024; 15:1421325. [PMID: 39027112 PMCID: PMC11255779 DOI: 10.3389/fmicb.2024.1421325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 06/21/2024] [Indexed: 07/20/2024] Open
Affiliation(s)
- Guanhong Liu
- Yinshanbeilu Grassland Eco-Hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research, Beijing, China
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Ze Gu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Bingyi Li
- Hebei Normal University, Shijiazhuang, Hebei, China
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Du J, Xu B, Ma G, Ma L, Liang J, Li K, Jiao H, Tian B, Li B, Ma L. The impact of benzoic acid and lactic acid on the treatment efficiency and microbial community in the sulfur autotrophic denitrification process. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e11056. [PMID: 38825347 DOI: 10.1002/wer.11056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/26/2024] [Accepted: 05/11/2024] [Indexed: 06/04/2024]
Abstract
Nitrate poses a potential threat to aquatic ecosystems. This study focuses on the sulfur autotrophic denitrification mechanism in the process of water culture wastewater treatment, which has been successfully applied to the degradation of nitrogen in water culture farm effluents. However, the coexistence of organic acids in the treatment process is a common environmental challenge, significantly affecting the activity of denitrifying bacteria. This paper aims to explore the effects of adding benzoic acid and lactic acid on denitrification performance, organic acid removal rate, and microbial population abundance in sulfur autotrophic denitrification systems under optimal operating conditions, sulfur deficiency, and high hydraulic load. In experiments with 50 mg·L-1 of benzoic acid or lactic acid alone, the results show that benzoic acid and lactic acid have a stimulating effect on denitrification activity, with the stimulating effect significantly greater than the inhibitory effect. Under optimal operating conditions, the average denitrification rate of the system remained above 99%; under S/N = 1.5 conditions, the average denitrification rate increased from 88.34% to 91.93% and 85.91%; under HRT = 6 h conditions, the average denitrification rate increased from 75.25% to 97.79% and 96.58%. In addition, the addition of organic acids led to a decrease in microbial population abundance. At the phylum level, Proteobacteria has always been the dominant bacterial genus, and its relative abundance significantly increased after the addition of benzoic acid, from 40.2% to 61.5% and 62.4%. At the genus level, Thiobacillus, Sulfurimonas, Chryseobacterium, and Thermomonas maintained high population abundances under different conditions. PRACTITIONER POINTS: Employing autotrophic denitrification process for treating high-nitrate wastewater. Utilizing organic acids as external carbon sources. Denitrifying bacteria demonstrate high utilization efficiency towards organic acids. Organic acids promote denitrification more than they inhibit it. The promotion is manifested in the enhancement of activity and microbial abundance.
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Affiliation(s)
- Jiancheng Du
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
| | - Bing Xu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
- Institute of Resources and Environment, Shandong Jianzhu University, Jinan, China
| | - Guangxiang Ma
- Shandong Environmental Science Society, Jinan, China
| | - Liang Ma
- Shandong Guochen Industrial Group Co., Ltd., Jinan, China
| | - Jinhao Liang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
| | - Ke Li
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
| | - Hui Jiao
- Shandong Guochen Industrial Group Co., Ltd., Jinan, China
| | - Binbin Tian
- Shandong Guochen Industrial Group Co., Ltd., Jinan, China
| | - Bingxu Li
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
| | - Linfeng Ma
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
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Duchesneau K, Defrenne CE, Petro C, Malhotra A, Moore JAM, Childs J, Hanson PJ, Iversen CM, Kostka JE. Responses of vascular plant fine roots and associated microbial communities to whole-ecosystem warming and elevated CO 2 in northern peatlands. THE NEW PHYTOLOGIST 2024; 242:1333-1347. [PMID: 38515239 DOI: 10.1111/nph.19690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 02/16/2024] [Indexed: 03/23/2024]
Abstract
Warming and elevated CO2 (eCO2) are expected to facilitate vascular plant encroachment in peatlands. The rhizosphere, where microbial activity is fueled by root turnover and exudates, plays a crucial role in biogeochemical cycling, and will likely at least partially dictate the response of the belowground carbon cycle to climate changes. We leveraged the Spruce and Peatland Responses Under Changing Environments (SPRUCE) experiment, to explore the effects of a whole-ecosystem warming gradient (+0°C to 9°C) and eCO2 on vascular plant fine roots and their associated microbes. We combined trait-based approaches with the profiling of fungal and prokaryote communities in plant roots and rhizospheres, through amplicon sequencing. Warming promoted self-reliance for resource uptake in trees and shrubs, while saprophytic fungi and putative chemoorganoheterotrophic bacteria utilizing plant-derived carbon substrates were favored in the root zone. Conversely, eCO2 promoted associations between trees and ectomycorrhizal fungi. Trees mostly associated with short-distance exploration-type fungi that preferentially use labile soil N. Additionally, eCO2 decreased the relative abundance of saprotrophs in tree roots. Our results indicate that plant fine-root trait variation is a crucial mechanism through which vascular plants in peatlands respond to climate change via their influence on microbial communities that regulate biogeochemical cycles.
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Affiliation(s)
- Katherine Duchesneau
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Center for Microbial Dynamics and Infection, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Camille E Defrenne
- College of Forest Resources and Environmental Science, Michigan Technological University, Houghton, MI, 49931, USA
| | - Caitlin Petro
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Center for Microbial Dynamics and Infection, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Avni Malhotra
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jessica A M Moore
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Joanne Childs
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Paul J Hanson
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
- Climate Change Science Institute and Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Colleen M Iversen
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
- Climate Change Science Institute and Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Joel E Kostka
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Center for Microbial Dynamics and Infection, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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Enagbonma BJ, Fadiji AE, Ayangbenro AS, Babalola OO. Communication between Plants and Rhizosphere Microbiome: Exploring the Root Microbiome for Sustainable Agriculture. Microorganisms 2023; 11:2003. [PMID: 37630562 PMCID: PMC10458600 DOI: 10.3390/microorganisms11082003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/25/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
Plant roots host numerous microorganisms around and inside their roots, forming a community known as the root microbiome. An increasing bulk of research is underlining the influences root-associated microbial communities can have on plant health and development. However, knowledge on how plant roots and their associated microbes interact to bring about crop growth and yield is limited. Here, we presented (i) the communication strategies between plant roots and root-associated microbes and (ii) the applications of plant root-associated microbes in enhancing plant growth and yield. This review has been divided into three main sections: communications between root microbiome and plant root; the mechanism employed by root-associated microbes; and the chemical communication mechanisms between plants and microbes and their application in plant growth and yield. Understanding how plant root and root-associated microbes communicate is vital in designing ecofriendly strategies for targeted disease suppression and improved plant growth that will help in sustainable agriculture. Ensuring that plants become healthy and productive entails keeping plants under surveillance around the roots to recognize disease-causing microbes and similarly exploit the services of beneficial microorganisms in nutrient acquisition, stress mitigation, and growth promotion.
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Affiliation(s)
| | | | | | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Mail Bag X2046, Mmabatho 2735, South Africa
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Petaja G, Bārdule A, Zalmanis J, Lazdiņa D, Daugaviete M, Skranda I, Zvaigzne ZA, Purviņa D. Changes in Organic Carbon Stock in Soil and Whole Tree Biomass in Afforested Areas in Latvia. PLANTS (BASEL, SWITZERLAND) 2023; 12:2264. [PMID: 37375889 DOI: 10.3390/plants12122264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/02/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023]
Abstract
This study investigates the soil organic carbon (SOC) and whole tree biomass carbon (C), soil bulk density (BD) as well as changes in these parameters in afforested areas in Latvia. The study covered 24 research sites in afforested areas-juvenile forest stands dominated by Scots pine, Norway spruce and Silver birch. The initial measurements were conducted in 2012 and repeated in 2021. The results show that afforestation mostly leads to a general decrease in soil BD and SOC stock in 0-40 cm soil layer and an increase in C stock in tree biomass across afforested areas with various tree species, soil types, and former land uses. The physical and chemical properties of the soil could explain the differences in changes in soil BD and SOC caused by afforestation, as well as the impact of past land use may have persisted. When comparing the changes in SOC stock with the increase in C stock in tree biomass due to afforestation, taking into account the decrease in soil BD and the resulting elevation of soil surface level, the afforested areas at juvenile development stage can be considered a net C sink.
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Affiliation(s)
- Guna Petaja
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
| | - Arta Bārdule
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
| | - Juris Zalmanis
- Latvia University of Life Sciences and Technologies, Liela Street 2, LV-3001 Jelgava, Latvia
| | - Dagnija Lazdiņa
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
| | - Mudrīte Daugaviete
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
| | - Ilona Skranda
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
| | - Zaiga Anna Zvaigzne
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
| | - Dana Purviņa
- Latvian State Forest Research Institute "Silava", Riga Street 111, LV-2169 Salaspils, Latvia
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Chen X, Wang Y, Wang Y, Zhang Y, Shen Y, He X, Xiao C. A Natural Moisture Gradient Affects Soil Fungal Communities on the South Shore of Hulun Lake, Inner Mongolia, China. J Fungi (Basel) 2023; 9:jof9050549. [PMID: 37233260 DOI: 10.3390/jof9050549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/14/2023] [Accepted: 04/30/2023] [Indexed: 05/27/2023] Open
Abstract
Soil moisture content (SWC) can change the diversity and composition of soil fungal communities by affecting soil texture and soil nutrients. To explore the response of soil fungal communities to moisture in the grassland ecosystem on the south shore of Hulun Lake, we set up a natural moisture gradient that was subdivided into high (HW), medium (MW), and low (LW) water contents. Vegetation was investigated by quadrat method, and aboveground biomass was collected by the mowing method. Soil physicochemical properties were obtained by internal experiments. The composition of the soil fungal community was determined using high-throughput sequencing technology. The results showed significant differences in soil texture, nutrients, and fungal species diversity under the moisture gradients. Although there was significant clustering of fungal communities in different treatments, the fungal community composition was not significantly different. According to the phylogenetic tree, the Ascomycota and Basidiomycota were the most important branches. The fungal species diversity was smaller when SWC was higher, and in this environment (HW), the fungal-dominant species were significantly related to SWC and soil nutrients. At this time, soil clay formed a protective barrier for the survival of the dominant classes Sordariomycetes and Dothideomycetes and increased their relative abundance. In summary, the fungal community responded significantly to SWC on the southern shore of the Hulun Lake ecosystem in Inner Mongolia, China, and the fungal community composition of the HW group was stable and easier to survive.
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Affiliation(s)
- Xin Chen
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Yujue Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Yao Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Yushu Zhang
- Beijing Key Laboratory of Ecological Function Assessment and Regulation Technology of Green Space, Beijing Academy of Forestry and Landscape Architecture, Beijing 100102, China
| | - Yuting Shen
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Xiaojia He
- The Administrative Center for China's Agenda 21, Beijing 100038, China
| | - Chunwang Xiao
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
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