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Sun H, Yao J, Long Z, Luo R, Wang J, Liu SS, Tang L, Wu M. A new parameter for quantitatively characterizing antibiotic hormesis: QSAR construction and joint toxic action judgment. JOURNAL OF HAZARDOUS MATERIALS 2024; 479:135767. [PMID: 39255662 DOI: 10.1016/j.jhazmat.2024.135767] [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: 06/25/2024] [Revised: 08/14/2024] [Accepted: 09/05/2024] [Indexed: 09/12/2024]
Abstract
Antibiotics usually induce the hormetic effects on bacteria, featured by low-dose stimulation and high-dose inhibition, which challenges the central belief in toxicity assessment and environmental risk assessment of antibiotics. However, there are currently no ideal parameters to quantitatively characterize hormesis. In this study, an effective area in hormesis (AH) was developed to quantify the biphasic dose-responses of single antibiotics (sulfonamides (SAs), sulfonamides potentiators (SAPs), and tetracyclines (TCs)) and binary mixtures (SAs-SAPs, SAs-TCs, and SAs-SAs) to the bioluminescence of Aliivibrio fischeri. Using Ebind (the lowest interaction energy between antibiotic and target protein) and Kow (octanol-water partition coefficient) as the structural descriptors, the reliable quantitative structure-activity relationship (QSAR) models were constructed for the AH values of test antibiotics and mixtures. Furthermore, a novel method based on AH was established to judge the joint toxic actions of binary antibiotics, which mainly exhibited synergism. The results also indicated that SAPs (or TCs) contributed more than SAs in the hormetic effects of antibiotic mixtures. This study proposes a new quantitative parameter for characterizing and predicting antibiotic hormesis, and considers hormesis as an integrated whole to reveal the combined effects of antibiotics, which will promote the development of risk evaluation for antibiotics and their mixtures.
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Affiliation(s)
- Haoyu Sun
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jingyi Yao
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Zhenheng Long
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Ruijia Luo
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jiajun Wang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Shu-Shen Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Liang Tang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Minghong Wu
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350108, Fujian, China
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Zhao X, Huang S, Yao Q, He R, Wang H, Xu Z, Xing W, Liu D. ABA-regulated MAPK signaling pathway promotes hormesis in sugar beet under cadmium exposure. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:135968. [PMID: 39342845 DOI: 10.1016/j.jhazmat.2024.135968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 09/08/2024] [Accepted: 09/25/2024] [Indexed: 10/01/2024]
Abstract
Sugar beet (Beta vulgaris L.) shows potential as an energy crop for cadmium (Cd) phytoremediation. To elucidate its in vivo response strategy to Cd exposure, seedlings were treated with 1, 3, and 5 mmol/L CdCl2 (Cd-1, Cd-3, and Cd-5) for 6 h, using 0 mmol/L CdCl2 (Cd-0) as the control. The results showed that Cd-3 promoted a unique "hormesis" effect, leading to superior growth performance, increased levels of chlorophyll, soluble protein, and SOD activity, and reduced MDA content in sugar beet, compared to Cd-1, Cd-5, and even Cd-0. GO and KEGG enrichments and PPI networks of transcriptomic analysis revealed that the differentially expressed genes (DEGs) were primarily involved in lipid metabolism, cellular protein catabolism, and photosynthesis. Notably, the MAPK signaling pathway was significantly enriched only under Cd-3, with the up-regulation of ABA-related core gene BvPYL9 and an increase in ABA content after 6 h of Cd exposure. Furthermore, overexpression of BvPYL9 in Arabidopsis thaliana (OE-1 and OE-2) resulted in enhanced growth (fresh weight, dry weight, and root length), as well as higher ABA and soluble protein contents under different Cd treatments. Cd-induced transcriptional responses of BvPYL9 were also evident in OE-1 and OE-2, especially at 10 µmol/L, indicated by qRT-PCR. These findings suggest that ABA-mediated MAPK signaling pathway is activated in response to Cd toxicity, with BvPYL9 being a key factor in the cascade effects for the Cd-induced hormesis in sugar beet.
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Affiliation(s)
- Xiaoxin Zhao
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Key Laboratory of Beet Genetics and Breeding/College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080, China
| | - Shuoqi Huang
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Molecular Biology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Qi Yao
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Molecular Biology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Rui He
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Molecular Biology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Hao Wang
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Key Laboratory of Beet Genetics and Breeding/College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080, China
| | - Zhaodan Xu
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Key Laboratory of Beet Genetics and Breeding/College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080, China
| | - Wang Xing
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Key Laboratory of Beet Genetics and Breeding/College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080, China
| | - Dali Liu
- National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Key Laboratory of Beet Genetics and Breeding/College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080, China.
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Zhou Y, Chen X, Zhu Y, Pan X, Li W, Han J. Mechanisms of hormetic effects of ofloxacin on Chlorella pyrenoidosa under environmental-relevant concentration and long-term exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 932:172856. [PMID: 38697534 DOI: 10.1016/j.scitotenv.2024.172856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/05/2024]
Abstract
Antibiotics are frequently detected in surface water and pose potential threats to organisms in aquatic ecosystem such as microalgae. The occurrence of biphasic dose responses raised the possibility of stimulation of microalgal biomass by antibiotics at environmental-relevant concentration and caused potential ecological risk such as algal bloom. However, the underlying mechanisms of low concentration-induced hormetic effects are not well understood. In this study, we evaluated the hormesis of ofloxacin on Chlorella pyrenoidosa under environmental-relevant concentration and long-term exposure. Results showed the hormetic effects of ofloxacin on cell density and carbon fixation rate (RC). The predicted maximum promotion was 17.45 % by 16.84 μg/L and 20.08 % by 15.78 μg/L at 21 d, respectively. The predicted maximum concentration of non-effect on cell density and RC at 21 d was 3.24 mg/L and 1.44 mg/L, respectively. Ofloxacin induced the mobilization of pigments and antioxidant enzymes to deal with oxidative stress. PCA analysis revealed Chl-a/Chl-b could act as a more sensitive biomarker under acute exposure while chlorophyll fluorescence parameters were in favor of monitoring long-term implication. The hormesis in increased secretion of extracellular organic matters was regarded as a defensive mechanism and accelerated indirect photodegradation of ofloxacin. Bioremoval was dominant and related to biomass accumulation in the total dissipation while abiotic removal appeared slight contributions. This study provided new insights into the understanding of hormesis of microalgae induced by antibiotics.
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Affiliation(s)
- Yuhao Zhou
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; School of Chemical Engineering and Materials, Changzhou Institute of Technology, Changzhou, Jiangsu 213032, China
| | - Xinyang Chen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China
| | - Yan Zhu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China
| | - Xiangjie Pan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China
| | - Wei Li
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China.
| | - Jiangang Han
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; School of Chemical Engineering and Materials, Changzhou Institute of Technology, Changzhou, Jiangsu 213032, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China
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Liu F, Zhang Y, Zhang Y, Yang J, Shen W, Yang S, Quan Z, Liu B, Yuan Z, Zhang Y. Thermodynamic restrictions determine ammonia tolerance of functional floras during anaerobic digestion. BIORESOURCE TECHNOLOGY 2024; 391:129919. [PMID: 37884096 DOI: 10.1016/j.biortech.2023.129919] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/14/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023]
Abstract
Ammonia inhibition is a major challenge in anaerobic digestion processes, affecting the activity and performance of functional floras, including syntrophic butyrate oxidation (FSBO), syntrophic propionate oxidation (FSPO), acetoclastic methanogenesis (FAMs), and hydrogenotrophic methanogenesis (FHMs). FHMs was more tolerant to ammonia, with a half maximal inhibitory concentration (IC50) of 18.80 g/L, followed by FSBO (IC50 = 14.26 g/L) and FSPO (IC50 = 10.47 g/L), and FAMs was the most sensitive to ammonia with the lowest IC50 (1.74 g/L). The order of ammonia tolerance (IC50) was found to be correlated with the Gibbs free energy of metabolic reactions in each functional flora. The results suggested the functional flora with higher energy availability (exergonic capacity) exhibited enhanced ammonia resistance ability. These findings provide insights into the thermodynamic restrictions and ammonia tolerance mechanisms of functional floras, which can guide the optimization and operation of anaerobic digestion systems for efficient methane production.
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Affiliation(s)
- Fengqin Liu
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Yifan Zhang
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Yu Zhang
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Jiale Yang
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Wenyan Shen
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Shuilian Yang
- College of Resources and Environmental Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Zhiyu Quan
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Bingshan Liu
- Analytical Instrument Center, Henan Agricultural University, Wenhua Road No. 95, Zhengzhou 450002, China
| | - Zhiliang Yuan
- College of Life Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China
| | - Yupeng Zhang
- College of Resources and Environmental Sciences, Henan Agricultural University, No.63 Agricultural Road, Zhengzhou 450002, China.
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Fan D, Sun Y, Chen M, Zhu Y, Agathokleous E, Zhu F, Han J. The role of the ABF1 gene in regulation of Cd-induced hormesis in Arabidopsis thaliana. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131991. [PMID: 37459756 DOI: 10.1016/j.jhazmat.2023.131991] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/29/2023] [Accepted: 07/02/2023] [Indexed: 07/26/2023]
Abstract
Hormesis is important in plant performance in contaminated environments, but the underlying genetic mechanisms are poorly understood. This study aimed at mining key genes in regulating Cd-induced hormesis in Arabidopsis thaliana and verifying their biological function. Hormesis of fresh weight, dry weight, and root length occurred at concentrations of 0.003-2.4, 0.03-0.6, and 0.03-0.6 µM Cd, respectively. Superoxide dismutase and catalase activities, and chlorophyll content displayed inverted U-shaped curves, indicating that the antioxidant defense system and photosynthesis system played roles in hormesis. Based on KEGG pathway analysis with the trend chart of differentially expressed genes and weighted correlation network analysis, the key gene ABF1 in the metabolic pathway of abscisic acid was identified. Subsequently, genetic experiments with wild, overexpressing, and knockdown lines of A. thaliana were conducted to further verify the biological function of ABF1 involving Cd-induced hormesis in A. thaliana. The results revealed that the resistance capability of the overexpressing type to Cd stress was significantly enhanced and implicated that the ABF1 gene is essential for Cd-induced hormesis in A. thaliana. Mining key genes that regulate Cd-induced hormesis in plants and stimulate them could have a transformative impact on the phytoremediation of metal-contaminated environments.
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Affiliation(s)
- Diwu Fan
- College of Ecology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; State Key Laboratory of Tree Genetics and Breeding, College of Life Sciences, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China
| | - Yong Sun
- College of Ecology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Moxian Chen
- State Key Laboratory of Tree Genetics and Breeding, College of Life Sciences, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Yongli Zhu
- College of Ecology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China
| | - Evgenios Agathokleous
- Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology (NUIST), Nanjing, Jiangsu 210044, China
| | - Fuyuan Zhu
- State Key Laboratory of Tree Genetics and Breeding, College of Life Sciences, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Jiangang Han
- College of Ecology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China.
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Chávez-Álvarez K, Del Carmen Rivera-Cruz M, Aceves-Navarro LA, Trujillo-Narcía A, García-de la Cruz R, Vega-López A. Physiological and microbiological hormesis in sedge Eleocharis palustris induced by crude oil in phytoremediation of flooded clay soil. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:1241-1253. [PMID: 36112299 DOI: 10.1007/s10646-022-02583-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Soil contamination with petroleum hydrocarbons affects plants and rhizospheric microorganisms. Microbial activity participates in important biochemical processes that stimulate, together with plants, the modification of toxic compounds for organisms. A nine-month experiment was set up to study the effect over time of oil on plant height (cm), formation of new plants, plant matter production (gravimetry), and population of rhizospheric microorganisms (serial dilution) in the sedge Eleocharis palustris. Removal of total petroleum hydrocarbons (soxhlet and gravimetry) from the soil was also evaluated. The means of the evaluated variables registered significant statistical differences (Duncan, p < 0.05) regarding the age of the plant and the amount of crude oil. There was a high correlation between oil and plant height (0.848) and with new plants (0.994). 60 mg oil dose promoted the greatest statistical difference in the amounts of roots and plant biomass (p < 0.05). E. palustris exposed to 60 and 75 mg of oil stimulated high densities of microalgae, actinomycetes, fungi, hydrocarbonoclastic bacteria and Pseudomonas spp; the overall ratio was 2:1 relative to natural attenuation. Plant and microorganism variables evaluated registered physiological and microbiological hormetic indices ≥1, showing a positive linear relationship. Natural attenuation was more efficient in removing crude oil. We conclude that E. palustris is tolerant to oil exposure. It is suggested to combine it with natural attenuation for the optimization of soils contaminated with crude oil.
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Affiliation(s)
- Karla Chávez-Álvarez
- Colegio de Postgraduados Campus Tabasco, Laboratorio de Microbiología Agrícola y Ambiental. Km 2.5 Periférico Carlos A. Molina, CP 86570 H, Cárdenas, Tabasco, México
| | - María Del Carmen Rivera-Cruz
- Colegio de Postgraduados Campus Tabasco, Laboratorio de Microbiología Agrícola y Ambiental. Km 2.5 Periférico Carlos A. Molina, CP 86570 H, Cárdenas, Tabasco, México.
| | - Lorenzo A Aceves-Navarro
- Colegio de Postgraduados Campus Tabasco, Laboratorio de Microbiología Agrícola y Ambiental. Km 2.5 Periférico Carlos A. Molina, CP 86570 H, Cárdenas, Tabasco, México
| | - Antonio Trujillo-Narcía
- Universidad Popular de la Chontalpa, Cuerpo Académico Energía y Medioambiente. Chontalpa, Carretera Cárdenas-Huimanguillo km 2, Ra. Paso y Playa, H. Cárdenas, CP 86500 H, Cárdenas, Tabasco, México
| | - Rubén García-de la Cruz
- Colegio de Postgraduados Campus Tabasco, Laboratorio de Microbiología Agrícola y Ambiental. Km 2.5 Periférico Carlos A. Molina, CP 86570 H, Cárdenas, Tabasco, México
| | - Armando Vega-López
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas Laboratorio de Toxicología Ambiental. Av. Wilfrido Massieu s/n, Unidad Profesional Zacatenco, Ciudad de México, CP 07738, México
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Cutler GC, Amichot M, Benelli G, Guedes RNC, Qu Y, Rix RR, Ullah F, Desneux N. Hormesis and insects: Effects and interactions in agroecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 825:153899. [PMID: 35181361 DOI: 10.1016/j.scitotenv.2022.153899] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/09/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
Insects in agroecosystems contend with many stressors - e.g., chemicals, heat, nutrient deprivation - that are often encountered at low levels. Exposure to mild stress is now well known to induce hormetic (stimulatory) effects in insects, with implications for insect management, and ecological structure and function in agroecosystems. In this review, we examine the major ecological niches insects occupy or guilds to which they belong in agroecosystems and how hormesis can manifest within and across these groups. The mechanistic underpinnings of hormesis in insects are starting to become established, explaining the many phenotypic hormetic responses observed in insect reproduction, development, and behavior. Whereas potential effects on insect populations are well supported in laboratory experiments, field-based hypothesis-driven research on hormesis is greatly lacking. Furthermore, because most ecological paradigms are founded within the context of communities, entomological agroecologists interested in hormesis need to 'level up' and test hypotheses that explore effects on species interactions, and community structure and functioning. Embedded in this charge is to continue experimentation on herbivorous pest species while shifting more focus towards insect natural enemies, pollinators, and detritivores - guilds that play crucial roles in highly functioning agroecosystems that have been understudied in hormesis research. Important areas for future insect agroecology research on hormesis are discussed.
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Affiliation(s)
- G Christopher Cutler
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, PO Box 550, Truro, NS B2N 5E3, Canada.
| | - Marcel Amichot
- Université Côte d'Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France.
| | - Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy.
| | - Raul Narciso C Guedes
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
| | - Yanyan Qu
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China.
| | - Rachel R Rix
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, PO Box 550, Truro, NS B2N 5E3, Canada.
| | - Farman Ullah
- Department of Plant Biosecurity, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Nicolas Desneux
- Université Côte d'Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France.
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The relevance of hormesis at higher levels of biological organization: Hormesis in microorganisms. CURRENT OPINION IN TOXICOLOGY 2022. [DOI: 10.1016/j.cotox.2021.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Guedes RNC, Rix RR, Cutler GC. Pesticide-Induced Hormesis in Arthropods: Towards Biological Systems. CURRENT OPINION IN TOXICOLOGY 2022. [DOI: 10.1016/j.cotox.2022.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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10
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Wang S, Huang B, Fan D, Agathokleous E, Guo Y, Zhu Y, Han J. Hormetic responses of soil microbiota to exogenous Cd: A step toward linking community-level hormesis to ecological risk assessment. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125760. [PMID: 33836329 DOI: 10.1016/j.jhazmat.2021.125760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/09/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
We investigated hormetic responses of soil microbial communities to exogenous Cd by assessing microbial count, bacterial and fungal abundance, and microbial community diversity. We found that the bacterial count (BC) decreased (3-40%) by 0.2-40 mg Cdkg-1. Addition of 0.6-2.0 mgkg-1 significantly increased fungal count (FC) by 7-42%, while addition of 4.0-40 mgkg-1 Cd decreased FC by 29-51%, indicating a hormetic dose response. We also found that the FC/BC ratio increased by 0.6-2.0 mg Cdkg-1, with a maximum stimulation of 51%, and decreased (18-27%) by 4.0-40 mg Cdkg-1. Cd had no adverse effect on the α-diversity of bacterial or fungal communities. For relative abundances (RAs) of bacteria and fungi at phylum level, Bacteroidetes RA exhibited a biphasic dose-response curve, with an 18-24% increase at 0.6-4.0 mgkg-1 and a 10% decrease at 40 mgkg-1 compared with control. The results of FC, FC/BC, and Bacteroidetes RAs suggest that hormesis occurred at microbial community level, with positive effects occurring at 0.6-2.0 mgkg-1. This study can contribute to incorporating microbial community hormesis into the ecological risk assessments in the future.
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Affiliation(s)
- Shengyan Wang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China.
| | - Bin Huang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Diwu Fan
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Evgenios Agathokleous
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology (NUIST), Nanjing 210044, Jiangsu, China.
| | - Yanhui Guo
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Yongli Zhu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China.
| | - Jiangang Han
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; National Positioning Observation Station of Hung-tse Lake Wetland Ecosystem in Jiangsu Province, Hongze, Jiangsu 223100, China.
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