1
|
Onder GO, Goktepe O, Karaman E, Karakas E, Mat OC, Bolat D, Okur E, Tan FC, Balcioglu E, Baran M, Ermis M, Yay A. Nonylphenol Exposure-Induced Oocyte Quality Deterioration Could be Reversed by Boric Acid Supplementation in Rats. Biol Trace Elem Res 2023; 201:4518-4529. [PMID: 37043110 DOI: 10.1007/s12011-023-03657-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 03/31/2023] [Indexed: 04/13/2023]
Abstract
In this study, we reported boric acid's protective effects on the quality of nonylphenol (NP)-exposed oocytes. Female rats were classified into 4 groups: control, boric acid, NP, and NP+boric acid. Histopathological studies and immunohistochemical analysis of anti-müllerian hormone (AMH), mechanistic target of rapamycin (mTOR), Sirtuin1 (SIRT1), stem cell factor (SCF) studies were done. The comet assay technique was utilized for DNA damage. The ELISA method was used to determine the concentrations of oxidative stress indicators (SOD, CAT, and MDA), ovarian hormone (INH-B), and inflammation indicators (IL-6 and TNF-α). Boric acid significantly reduced the histopathological alterations and nearly preserved the ovarian reserve. With the restoration of AMH and SCF, boric acid significantly improved the ovarian injury. It downregulated SIRT1 and upregulated the mTOR signaling pathway. It provided DNA damage protection. Ovarian SOD, CAT levels were decreased by boric acid. Boric acid co-administration significantly reduced NP's MDA, IL-6, and TNF-activities. This results imply that boric acid has a protective role in ovarian tissue against NP-mediated infertility.
Collapse
Affiliation(s)
- Gozde Ozge Onder
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey.
| | - Ozge Goktepe
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | - Enes Karaman
- Department of Gynecology and Obstetrics, Savur Prof Dr Aziz Sancar District State Hospital, Mardin, Turkey
| | - Erol Karakas
- Department of Gynecology and Obstetrics, Kayseri State Hospital, Kayseri, Turkey
| | - Ozge Cengiz Mat
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
| | - Demet Bolat
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
| | - Eda Okur
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
| | - Fazile Canturk Tan
- Department of Biophysics, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
| | - Esra Balcioglu
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | - Munevver Baran
- Department of Pharmaceutical Basic Science, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey
| | - Mustafa Ermis
- Erciyes University, Experimental Researches and Application Center, Kayseri, Turkey
| | - Arzu Yay
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| |
Collapse
|
2
|
Efficient treatment of phenol wastewater by co-culture of Chlorella vulgaris and Candida tropicalis. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
3
|
Jin Z, Du L, Cheng Q, Jiang Y, Hui C, Xu L, Zhao Y, Jiang H. Physiological and transcriptional responses of Dictyosphaerium sp. under co-exposure of a typical microplastic and nonylphenol. ENVIRONMENTAL RESEARCH 2022; 204:112287. [PMID: 34743805 DOI: 10.1016/j.envres.2021.112287] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Microplastics (MPs) and nonylphenol (NP) are typical pollutants that are frequently detected in aquatic environments and can pose a risk to aquatic organisms. However, the responses of algae, the producers in aquatic ecosystems, to MP and NP co-exposure have not been extensively investigated. In this study, polystyrene (PS, 50 mg/L) was selected as a representative MP to evaluate its short-term effects on algae treated with NP (4 mg/L). The results showed that PS mitigated the toxicity of NP to algae after 96 h of exposure, as illustrated by the higher cell densities and pigment concentrations, as well as lower extracellular protein contents and better integrity of intracellular structures, in algae subjected to PS + NP treatment compared with those subjected to NP treatment. Moreover, the upregulated expression of genes involved in photosynthesis and downregulated expression of ribosomal genes as well as genes encoding ATPase and antioxidase, analyzed through RNA-sequencing analysis, further indicated the potential repair and defense mechanisms of PS in NP-treated algae.
Collapse
Affiliation(s)
- Zhuo Jin
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Linna Du
- Department of Agriculture and Biotechnology, Wenzhou Vocational College of Science and Technology, Wenzhou, 325006, China
| | - Qilu Cheng
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ying Jiang
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Cai Hui
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ligen Xu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Yuhua Zhao
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hui Jiang
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
4
|
Feng Y, Wang A, Fu W, Song D. Growth performance, antioxidant response, biodegradation and transcriptome analysis of Chlorella pyrenoidosa after nonylphenol exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150507. [PMID: 34583075 DOI: 10.1016/j.scitotenv.2021.150507] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 09/17/2021] [Accepted: 09/17/2021] [Indexed: 05/15/2023]
Abstract
Chlorella pyrenoidosa was exposed to nonylphenol (NP) to investigate the tolerance, antioxidant response, removal efficiency, and biodegradation mechanism. We conducted studies on algal biomass, chlorophyll a content, and photosynthetic activity, and found that C. pyrenoidosa exhibited a high tolerance even at 8 mg L-1 of NP. Changes in peroxidase (POD) and superoxide dismutase (SOD) activities indicated that the NP-induced oxidative stress caused oxidant damage, which increased the malondialdehyde (MDA) content. After culturing for 120 h, the NP removal efficiency of C. pyrenoidosa was 89%, 59%, 49%, and 48% in the 2, 4, 6, and 8 mg L-1 treatment groups, respectively. Degradation intermediates determined by GC-MS suggested that the biodegradation of NP in C. pyrenoidosa originated from the long alkyl chain. In addition, transcriptome analysis indicated that NP affected photosynthesis, antioxidase, and oxidoreductase activity-related genes. In summary, our results indicated that C. pyrenoidosa is a species that exhibits high tolerance and biodegradation capacity toward NP.
Collapse
Affiliation(s)
- Yu Feng
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Ao Wang
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Wenxian Fu
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Donghui Song
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin 300457, China; Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin 300457, China.
| |
Collapse
|
5
|
Chen YD, Zhu Y, Xin JP, Zhao C, Tian RN. Succinic acid inhibits photosynthesis of Microcystis aeruginosa via damaging PSII oxygen-evolving complex and reaction center. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:58470-58479. [PMID: 34114144 DOI: 10.1007/s11356-021-14811-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 06/07/2021] [Indexed: 06/12/2023]
Abstract
To elucidate the mechanism of succinic acid (SA) inhibition of Microcystis aeruginosa, the chlorophyll fluorescence transients, photosynthesis, photosynthetic electron transport activity, and gene expression of M. aeruginosa were evaluated under various doses of SA. The results demonstrated that, after treatment with 60 mg L-1 SA for 1 h, the chlorophyll fluorescence transients and related parameters changed significantly, indicating that the function and structure of photosynthetic apparatuses of Microcystis were seriously damaged. The initial quantum efficiency α, maximum net photosynthetic rate Pnmax, dark respiration rate Rd, and gross photosynthetic rate decreased to 57%, 49%, 49%, and 46%, respectively, relative to the control. Furthermore, photosystem II (PSII) activity (H2O→p-BQ) and the electron transport activity of H2O→MV and DPC→MV significantly decreased. Real-time PCR analysis revealed that, following incubation with 60 mg L-1 SA for 24 h, the expression level of core protein genes (psbA, psaB, psbD, and psbO) of the photosynthesis centers photosystem I (PSI) and PSII decreased significantly. However, the transcription of gene nblA encoding phycobilisome degradation protein was elevated. The downregulation of the rbcL gene, which encodes the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), resulted in the suppression of CO2 fixation and assimilation. High concentration (60 mg L-1) of SA resulted in damage to oxygen-evolving complex (OEC) and reaction center of PSII, blocking photosynthetic electron transport, thereby lowering the rate photosynthesis and inhibiting the growth of Microcystis. We concluded that inhibition of photosynthesis is an important mechanism of SA inhibition in M. aeruginosa.
Collapse
Affiliation(s)
- Yi-Dong Chen
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Yuan Zhu
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Jian-Pan Xin
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Chu Zhao
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Ru-Nan Tian
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China.
| |
Collapse
|
6
|
Yang Q, Xu W, Luan T, Pan T, Yang L, Lin L. Comparative responses of cell growth and related extracellular polymeric substances in Tetraselmis sp. to nonylphenol, bisphenol A and 17α-ethinylestradiol. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 274:116605. [PMID: 33545521 DOI: 10.1016/j.envpol.2021.116605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 01/19/2021] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Estuarine ecosystems near mega-cities are sinks of anthropogenic endocrine disrupting chemicals (EDCs). As the most important primary producer, indigenous microalgae and their secreted extracellular polymeric substances (EPSs) might interact with EDCs and contribute to their fate and risk. Tetraselmis sp. is a representative model of estuarine microalga, for which EDC toxicity and its effects on EPS synthesis have rarely been studied. Through microalgal isolation, algal cell growth tests, EDC removal and the characterization of related EPS profiles, the present work intends to clarify the comparative responses of Tetraselmis sp. to nonylphenol (NP), bisphenol A (BPA) and 17α-ethinylestradiol (EE2). The results showed that the half inhibitory concentration on cell growth was 0.190-0.313 mg/dm3 for NP, which was one order of magnitude lower than the comparable values for BPA and EE2 at 2.072-3.254 mg/dm3. Regarding chlorophyll, NP induced its degradation, EE2 led to its decreased production, and BPA had no obvious effect. Under EDC stress, only the concentrations of colloidal polysaccharides and proteins responded dose-dependently to EE2. Except for the colloidal fraction in the EE2 treatment group, the increase in neutral monosaccharides, especially glucose and galactose, was a common response to EDCs. Compared to the recalcitrant BPA, NP underwent abiotic degradation in alga-free water, and EE2 could be biodegraded in water containing this microalga. The chemical-specific responses of cell growth, chlorophyll and related EPS profiles were driven by the different fates of EDCs, and the underlying mechanism was further discussed. The results obtained in the present work are of critical importance for understanding the fate and effects of different EDCs mediated by microalgae and their related EPSs.
Collapse
Affiliation(s)
- Qian Yang
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, 510275, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510600, China
| | - Weihao Xu
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Tiangang Luan
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Tianle Pan
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, 510275, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510600, China
| | - Lihua Yang
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.
| | - Li Lin
- State Key Laboratory of Biocontrol, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.
| |
Collapse
|
7
|
Kim H, Wang H, Ki JS. Chloroacetanilides inhibit photosynthesis and disrupt the thylakoid membranes of the dinoflagellate Prorocentrum minimum as revealed with metazachlor treatment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111928. [PMID: 33476845 DOI: 10.1016/j.ecoenv.2021.111928] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 06/12/2023]
Abstract
The chloroacetanilides are among the most commonly used herbicides worldwide, which contaminate aquatic environments and affect aquatic phototrophs. Their sub-lethal toxicity has been evaluated using freshwater algae; however, the modes of cellular toxicity and levels of toxicity to marine organisms are not fully understood. In the present study, we assessed the cellular and molecular effects of chloroacetanilides on marine phototrophs using the dinoflagellate Prorocentrum minimum and the herbicide metazachlor (MZC). The MZC treatment led to a considerable reduction in cell number and pigment, and the EC50 of MZC was calculated to be 0.647 mg/L. The photosynthetic parameters, Fv/Fm and chlorophyll fluorescence significantly decreased with MZC exposure time in a dose-dependent manner. In addition, MZC significantly induced photosynthesis genes, including PmpsbA, PmpsaA, and PmatpB, and the antioxidant PmGST, but not PmKatG. These findings were well matched to reactive oxygen species (ROS) production in MZC-treated cells. Interestingly, we observed inflated vacuoles, undivided chloroplasts, and breakdown of thylakoid membranes in MZC-treated cells. These results support the hypothesis that MZC severely damages chloroplasts, resulting in dysfunction of the dinoflagellate photosynthesis and possibly marine phototrophs in the environment.
Collapse
Affiliation(s)
- Hansol Kim
- Department of Biotechnology, Sangmyung University, Seoul 03016, South Korea
| | - Hui Wang
- Department of Biotechnology, Sangmyung University, Seoul 03016, South Korea
| | - Jang-Seu Ki
- Department of Biotechnology, Sangmyung University, Seoul 03016, South Korea.
| |
Collapse
|
8
|
Yi T, Shan Y, Huang B, Tang T, Wei W, Quinn NWT. An efficient Chlorella sp.-Cupriavidus necator microcosm for phenol degradation and its cooperation mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140775. [PMID: 32663680 DOI: 10.1016/j.scitotenv.2020.140775] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/03/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
A Chlorella sp.-Cupriavidus necator (C. necator) microcosm was artificially established for phenol degradation. The cooperation relationship between Chlorella sp. and C. necator was initially demonstrated, and then the effects of Chlorella sp./C. necator inoculation ratio, light intensity, temperature and pH on the performance of this microcosm were systematically evaluated and optimized. The optimal conditions for phenol degradation were as follows: a Chlorella sp./C. necator inoculation ratio of 1:1, a light intensity of 110 μmol m-2 s-1, a temperature in the range of 25-32 °C and a pH in the range of 5.5-7.5. Under optimal conditions, this microcosm could degrade phenol with a maximum concentration of 1200 mg L-1 within 60 h. It was found that only when the phenol concentration was reduced to the tolerance concentration of microalgae, that is, the last stage of phenol degradation, the cooperation effect could be generated, indicating that the tolerance of microalgae to phenol may be more important than its degradation performance. Comparative transcriptomic analysis was conducted to discuss the cooperation mechanism of this microcosm subject to high phenol concentrations. The up-regulation of genes involved in photosynthesis and carbon fixation of Chlorella sp. demonstrated the CO2 and O2 exchange between Chlorella sp. and C. necator and their cooperation relationship. This study suggests that this microcosm has great potential for the bioremediation of phenol contaminants.
Collapse
Affiliation(s)
- Tao Yi
- CAS Key Lab of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Ying Shan
- CAS Key Lab of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Bo Huang
- CAS Key Lab of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Tao Tang
- CAS Key Lab of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; Earth Science Division, Lawrence Berkeley National Laboratory, California 94720, USA.
| | - Wei Wei
- CAS Key Lab of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Nigel W T Quinn
- Earth Science Division, Lawrence Berkeley National Laboratory, California 94720, USA
| |
Collapse
|
9
|
Ding N, Wang L, Kang Y, Luo K, Zeng D, Man YB, Zhang Q, Zeng L, Luo J, Jiang F. The comparison of transcriptomic response of green microalga Chlorella sorokiniana exposure to environmentally relevant concentration of cadmium(II) and 4-n-nonylphenol. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:2881-2894. [PMID: 32026273 DOI: 10.1007/s10653-020-00526-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
The transcriptomic response of green microalga Chlorella sorokiniana exposure to environmentally relevant concentration of cadmium(II) (Cd) and 4-n-nonylphenol (4-n-NP) was compared in the present study. Cd and 4-n-NP exposure showed a similar pattern of dys-regulated pathways. The photosystem was affected due to suppression of chlorophyll biosynthesis via down-regulation of Mg-protoporphyrin IX chelatase subunit ChlD (CHLD) and divinyl chlorophyllide a 8-vinyl-reductase (DVR) in Cd group and via down-regulation of DVR in 4-n-NP group. Furthermore, the reactive oxygen species (ROS) could be induced through down-regulation of solanesyl diphosphate synthase 1 (SPS1) and homogentisate phytyltransferase (HPT) in Cd group and via down-regulation of HPT in 4-n-NP group. Additionally, Cd and 4-n-NP would both cause the dys-regulation of carbohydrate metabolism and protein synthesis. On the other hand, there are some different responses or detoxification mechanism of C. sorokiniana to 4-n-NP stress compared to Cd exposure. The increased ROS would cause the DNA damage and protein destruction in Cd exposure group. Simultaneously, the RNA transcription was dys-regulated and a series of changes in gene expressions were observed. This included lipid metabolism, protein modification, and DNA repair, which involved in response of C. sorokiniana to Cd stress or detoxification of Cd. For 4-n-NP exposure, no effect on lipid metabolism and DNA repair was observed. The nucleotide metabolism including pyrimidine metabolism and purine metabolism was significantly up-regulated in the 4-n-NP exposure group, but not in the Cd exposure group. In addition, 4-n-NP would induce the ubiquitin-mediated proteolysis and proteasomal degradation to diminish the misfolded protein caused by ROS and down-regulation of heat shocking protein 40. In sum, the Cd and 4-n-NP could cause the same toxicological effects via the common pathways and possess similar detoxification mechanism. They also showed different responses in nucleotide metabolism, lipid metabolism, and DNA repair.
Collapse
Affiliation(s)
- Na Ding
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
| | - Lu Wang
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
| | - Yuan Kang
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China.
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, People's Republic of China.
| | - Kesong Luo
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
| | - Diya Zeng
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
| | - Yu Bon Man
- Consortium on Health, Environment, Education and Research (CHEER), and Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, People's Republic of China.
| | - Qiuyun Zhang
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Lixuan Zeng
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Jiwen Luo
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Feng Jiang
- School of Environment, South China Normal University, Higher Education Mega Center, Guangzhou, 510006, People's Republic of China
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, People's Republic of China
| |
Collapse
|
10
|
Kim H, Wang H, Abassi S, Ki JS. The herbicide alachlor severely affects photosystem function and photosynthetic gene expression in the marine dinoflagellate Prorocentrum minimum. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2020; 55:620-629. [PMID: 32364417 DOI: 10.1080/03601234.2020.1755198] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Alachlor is one of the most widely used herbicides and can remain in agricultural soils and wastewater. The toxicity of alachlor to marine life has been rarely studied; therefore, we evaluated the physiological and transcriptional responses in the marine dinoflagellate Prorocentrum minimum. The herbicide led to considerable decreases in P. minimum cell numbers and pigment contents. The EC50 was determined to be 0.373 mg/L. Photosynthesis efficiency and chlorophyll autofluorescence dramatically decreased with increasing alachlor dose and exposure time. Real-time PCR analysis showed that the photosynthesis-related genes PmpsbA, PmatpB, and PmrbcL were induced the most by alachlor; the transcriptional level of each gene varied with time. PmrbcL expression increased after 30 min of alachlor treatment, whereas PmatpB and PmpsbA increased after 24 h. The PmpsbA expression level was highest (5.0 times compared to control) after 6 h of alachlor treatment. There was no significant change in PmpsaA expression with varying treatment time or concentration. Additionally, there was no notable change in the expression of antioxidant genes PmGST and PmKatG, or in ROS accumulation. These suggest that alachlor may affect microalgal photosystem function, with little oxidative stress, causing severe physiological damage to the cells, and even cell death.
Collapse
Affiliation(s)
- Hansol Kim
- Department of Biotechnology, Sangmyung University, Seoul, South Korea
| | - Hui Wang
- Department of Biotechnology, Sangmyung University, Seoul, South Korea
| | - Sofia Abassi
- Department of Biotechnology, Sangmyung University, Seoul, South Korea
| | - Jang-Seu Ki
- Department of Biotechnology, Sangmyung University, Seoul, South Korea
| |
Collapse
|
11
|
Cheng Q, Zhou Q, Jin Z, Jiang Y, Xu L, Jiang H, Zhao Y. Bioaccumulation, growth performance, and transcriptomic response of Dictyosphaerium sp. after exposure to nonylphenol. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 687:416-422. [PMID: 31212149 DOI: 10.1016/j.scitotenv.2019.06.136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/07/2019] [Accepted: 06/08/2019] [Indexed: 06/09/2023]
Abstract
Algal cultures of Dictyosphaerium sp. were treated with a wide range (0-8 mg/L) of nonylphenol (NP) applications to investigate the species' potential to perform bioremediation of NP-contaminated wastewater and explore the mechanism of NP toxicity in algal cell. The algal species exhibited a high tolerance for NP and efficiently removed even high concentrations of NP. The accumulation of NP in algal cells tended to increase and the percentage of NP adhered to the cell walls tended to decrease as the NP concentration increased. The thylakoid density and the pyrenoid size also tended to decrease as the NP concentration rose. The key genes involved in the antioxidative pathways and photosynthetic pathways were down-regulated in the NP-treated algal cells. Algal ribosome genes were especially sensitive to NP. The results indicated that NP could induce oxidative stress in algal cells and that Dictyosphaerium sp. showed potential as a bioremediation agent.
Collapse
Affiliation(s)
- Qilu Cheng
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qifa Zhou
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhuo Jin
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ying Jiang
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Ligen Xu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hui Jiang
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuhua Zhao
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
12
|
Liu C, Liu S, Diao J. Enantioselective growth inhibition of the green algae (Chlorella vulgaris) induced by two paclobutrazol enantiomers. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 250:610-617. [PMID: 31035143 DOI: 10.1016/j.envpol.2019.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/28/2019] [Accepted: 04/06/2019] [Indexed: 06/09/2023]
Abstract
Enantiomers of chiral pesticides usually display different toxic effects on non-target organisms in surrounding environment, but there are few studies on its enantioselective toxicity of paclobutrazol to aquatic organisms such as Chlorella vulgaris (C. vulgaris). In this study, the enantioselective bioaccumulation and toxicities, such as acute toxicity and oxidative stress, of the racemate, (2S, 3S)-enantiomer (S-enantiomer) and (2R, 3R)-enantiomer (R-enantiomer) of paclobutrazol to the C. vulgaris cells were investigated. The results showed that the algae cells were able to accumulate the paclobutrazol in a short time, while this bioaccumulation had no enantioselective distinction between the two enantiomers during biological metabolism. However, the racemate and two enantiomers of paclobutrazol significantly inhibited the growth of C. vulgaris, displayed different median lethal concentrations. The photosynthetic pigments, photosynthesis-related genes as well as antioxidation-related biomarkers in treated C. vulgaris were also investigated. In general, R-enantiomer was found to be more toxic to C. vulgaris cells than its racemate and S-enantiomer. Additionally, transmission electron microscopy (TEM) analysis showed the R-enantiomer caused more serious changes than S-enantiomer. Moreover, contents of two plant hormones (gibberellin, GA and indoleacetic acid, IAA) were determined in treated C. vulgaris. Higher paclobutrazol concentrations caused lower IAA contents significantly. Nevertheless, the two enantiomers showed no enantioselective effects on the biosynthesis of GA in C. vulgaris. Our results are helpful to understand the enantioselective effects of paclobutrazol enantiomers on non-target organisms, and useful for evaluating their environmental risks.
Collapse
Affiliation(s)
- Chunxiao Liu
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing 100193, China
| | - Shangzhong Liu
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China
| | - Jinling Diao
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing 100193, China.
| |
Collapse
|
13
|
Wang L, Xiao H, He N, Sun D, Duan S. Biosorption and Biodegradation of the Environmental Hormone Nonylphenol By Four Marine Microalgae. Sci Rep 2019; 9:5277. [PMID: 30918322 PMCID: PMC6437302 DOI: 10.1038/s41598-019-41808-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 03/14/2019] [Indexed: 01/26/2023] Open
Abstract
Microalgae are the most abundant microorganisms in aquatic environments, and many possess the ability to remove organic contaminants. The presence of endocrine disruption compounds (EDCs) in many coastal marine systems and their associated risks have elicited great concern, especially in the case of nonylphenol (NP), which is classified as a priority contaminate by the U.S. EPA. In this context, batch experiments were conducted to investigate the intracellular absorption, extracellular adsorption and biodegradation of NP by four species of marine microalgae: Phaeocystis globosa, Nannochloropsis oculata, Dunaliella salina and Platymonas subcordiformis. The results showed a sharp reduction of NP in medium containing the four microalgal species during the first 24 h of incubation, and the four species exhibited the greatest capacity for NP adsorption and absorption within 24 h of culture. However, the amount of NP absorbed and adsorbed by all four microalgae decreased with increasing time in culture, and intracellular absorption was greater than extracellular adsorption. After 120 h of exposure to NP, the four species could biodegrade most of the NP in the medium, with efficiencies ranging from 43.43 to 90.94%. In sum, we found that the four microalgae have high biodegradation percentages and can thus improve the bioremediation of NP-contaminated water.
Collapse
Affiliation(s)
- Luyun Wang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Jinan University, Guangzhou, P.R. China
| | - Han Xiao
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Jinan University, Guangzhou, P.R. China
| | - Ning He
- College of Life Science and Resources and Environment, Yichun University, Yichun, 336000, Jiangxi, China
| | - Dong Sun
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Jinan University, Guangzhou, P.R. China.
| | - Shunshan Duan
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Jinan University, Guangzhou, P.R. China.
| |
Collapse
|
14
|
Aderemi AO, Novais SC, Lemos MFL, Alves LM, Hunter C, Pahl O. Oxidative stress responses and cellular energy allocation changes in microalgae following exposure to widely used human antibiotics. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 203:130-139. [PMID: 30125766 DOI: 10.1016/j.aquatox.2018.08.008] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/11/2018] [Accepted: 08/12/2018] [Indexed: 05/08/2023]
Abstract
The individual effect of four human antibiotics on the microalgae Raphidocelis subcapitata was investigated following a 120-h exposure. The effects were assessed by analyzing growth, and biochemical parameters related with: 1) antioxidant capacity and oxidative damage by measuring superoxide dismutase (SOD) activity and lipid peroxidation (LPO) levels; and 2) cellular energy allocation (CEA) by quantifying the content in energy reserves, which represents the energy available (Ea), and the electron transport system activity that represents a measure of oxygen and cellular energy consumption (Ec). Growth yield inhibitory concentrations of sulfamethoxazole (18-30%), clarithromycin (28.7%), ciprofloxacin (28%) and erythromycin (17-39%) were found to elicit a considerable increase in Ec, thereby causing a significant decrease in the CEA. The elevated Ec can be a result of the need to respond to oxidative stress occurring under those conditions given the significant increase in SOD activity at these levels. For sulfamethoxazole, erythromycin and ciprofloxacin, the antioxidant responses do not seem to be enough to cope with the reactive oxygen species and prevent oxidative damage, given the elevated LPO levels observed. A stimulatory effect on growth yield was observed (up to 16%) at ciprofloxacin lowest concentration, which highly correlated with the increase in CEA. Based on the no observed effect concentration (NOECs) and/or effective concentration (EC10) results, Ec, SOD and CEA were more sensitive than the classical endpoint of growth rate for all the tested antibiotics. By revealing the antibiotic stress effects in R. subcapitata at the cellular level, this study suggests CEA as a more reliable indicator of the organisms' physiological status.
Collapse
Affiliation(s)
- Adeolu O Aderemi
- School of Engineering and Built Environment, Glasgow Caledonian University, United Kingdom.
| | - Sara C Novais
- MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Portugal
| | - Marco F L Lemos
- MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Portugal
| | - Luís M Alves
- MARE - Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Portugal
| | - Colin Hunter
- School of Engineering and Built Environment, Glasgow Caledonian University, United Kingdom
| | - Ole Pahl
- School of Engineering and Built Environment, Glasgow Caledonian University, United Kingdom
| |
Collapse
|
15
|
Wang H, Guo R, Ki JS. 6.0 K microarray reveals differential transcriptomic responses in the dinoflagellate Prorocentrum minimum exposed to polychlorinated biphenyl (PCB). CHEMOSPHERE 2018; 195:398-409. [PMID: 29274579 DOI: 10.1016/j.chemosphere.2017.12.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/23/2017] [Accepted: 12/11/2017] [Indexed: 06/07/2023]
Abstract
Endocrine disrupting chemicals (EDCs) have toxic effects on algae; however, their molecular genomic responses have not been sufficiently elucidated. Here, we evaluated genome-scaled responses of the dinoflagellate alga Prorocentrum minimum exposed to an EDC, polychlorinated biphenyl (PCB), using a 6.0 K microarray. Based on two-fold change cut-off, we identified that 609 genes (∼10.2%) responded to the PCB treatment. KEGG pathway analysis showed that differentially expressed genes (DEGs) were related to ribosomes, biosynthesis of amino acids, spliceosomes, and cellular processes. Many DEGs were involved in cell cycle progression, apoptosis, signal transduction, ion binding, and cellular transportation. In contrast, only a few genes related to photosynthesis and oxidative stress were expressed in response to PCB exposure. This was supported by that fact that there were no obvious changes in the photosynthetic efficiency and reactive oxygen species (ROS) production. These results suggest that PCB might not cause chloroplast and oxidative damage, but could lead to cell cycle arrest and apoptosis. In addition, various signal transduction and transport pathways might be disrupted in the cells, which could further contribute to cell death. These results expand the genomic understanding of the effects of EDCs on this dinoflagellate protist.
Collapse
Affiliation(s)
- Hui Wang
- Department of Biotechnology, Sangmyung University, Seoul 03016, South Korea
| | - Ruoyu Guo
- Department of Biotechnology, Sangmyung University, Seoul 03016, South Korea
| | - Jang-Seu Ki
- Department of Biotechnology, Sangmyung University, Seoul 03016, South Korea.
| |
Collapse
|
16
|
Chen S, Li X, Lavoie M, Jin Y, Xu J, Fu Z, Qian H. Diclofop-methyl affects microbial rhizosphere community and induces systemic acquired resistance in rice. J Environ Sci (China) 2017; 51:352-360. [PMID: 28115148 DOI: 10.1016/j.jes.2016.06.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/30/2016] [Accepted: 06/01/2016] [Indexed: 05/27/2023]
Abstract
Diclofop-methyl (DM), a widely used herbicide in food crops, may partly contaminate the soil surface of natural ecosystems in agricultural area and exert toxic effects at low dose to nontarget plants. Even though rhizosphere microorganisms strongly interact with root cells, little is known regarding their potential modulating effect on herbicide toxicity in plants. Here we exposed rice seedlings (Xiushui 63) to 100μg/L DM for 2 to 8days and studied the effects of DM on rice rhizosphere microorganisms, rice systemic acquired resistance (SAR) and rice-microorganisms interactions. The results of metagenomic 16S rDNA Illumina tags show that DM increases bacterial biomass and affects their community structure in the rice rhizosphere. After DM treatment, the relative abundance of the bacterium genera Massilia and Anderseniella increased the most relative to the control. In parallel, malate and oxalate exudation by rice roots increased, potentially acting as a carbon source for several rhizosphere bacteria. Transcriptomic analyses suggest that DM induced SAR in rice seedlings through the salicylic acid (but not the jasmonic acid) signal pathway. This response to DM stress conferred resistance to infection by a pathogenic bacterium, but was not influenced by the presence of bacteria in the rhizosphere since SAR transcripts did not change significantly in xenic and axenic plant roots exposed to DM. The present study provides new insights on the response of rice and its associated microorganisms to DM stress.
Collapse
Affiliation(s)
- Si Chen
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Xingxing Li
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Michel Lavoie
- Quebec-Ocean and Takuvik Joint International Research Unit, Laval University, Quebec, G1V OA6, Canada
| | - Yujian Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jiahui Xu
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
| |
Collapse
|
17
|
Song H, Fan X, Liu G, Xu J, Li X, Tan Y, Qian H. Inhibitory effects of tributyl phosphate on algal growth, photosynthesis, and fatty acid synthesis in the marine diatom Phaeodactylum tricornutum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24009-24018. [PMID: 27638802 DOI: 10.1007/s11356-016-7531-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 08/26/2016] [Indexed: 06/06/2023]
Abstract
The widely used solvent extractant, tributyl phosphate (TBP), primarily used as a solvent for the conventional processing of nuclear fuel, has come under scrutiny recently due to concerns surrounding potential environmental contamination and toxicity. In this study, we found that, in Phaeodactylum tricornutum, administration of TBP severely inhibited algal cell growth by reducing photosynthetic efficiency and inducing oxidative stress. We further explored the effect of TBP by examining the gene expression of the photosynthetic electron transport chain and its contribution to reactive oxygen species (ROS) burst. Our data revealed that TBP affected both fatty acid content and profile by regulating the transcription of genes related to glycolysis, fatty acid biosynthesis, and β-oxidation. These results demonstrated that TBP did in fact trigger the synthesis of ROS, disrupting the subcellular membrane structure of this aquatic organism. Our study brings new insight into the fundamental mechanism of toxicity exerted by TBP on the marine alga P. tricornutum.
Collapse
Affiliation(s)
- Hao Song
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Xiaoji Fan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Guangfu Liu
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Jiahui Xu
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Xingxing Li
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Yuzhu Tan
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China.
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.
| |
Collapse
|
18
|
Esteban S, Llamas PM, García-Cortés H, Catalá M. The endocrine disruptor nonylphenol induces sublethal toxicity in vascular plant development at environmental concentrations: A risk for riparian plants and irrigated crops? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 216:480-486. [PMID: 27312331 DOI: 10.1016/j.envpol.2016.05.086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 05/29/2016] [Accepted: 05/29/2016] [Indexed: 06/06/2023]
Abstract
In recent years, there is a growing concern among the scientific community about the presence of the so-called emergent pollutants in waters of different countries, especially endocrine-disrupting compounds (EDCs) that have the ability to alter the hormonal system. One of the substances found almost ubiquitously and in higher concentrations is the alkylphenol nonylphenol. Albeit this compound is included in priority lists as a probable risk for human health and the environment, little is known about its effects on developing plants. The aim of this work is to assess the acute and sub-chronic toxicity of environmental concentrations of nonylphenol in riparian vascular plant development using spores of the fern Polystichum setiferum and a biomarker-based approach: mitochondrial activity (cell viability), chlorophyll (plant physiology) and DNA content (growth). Mitochondrial activity and DNA content show that nonylphenol induces acute and sub-chronic toxicity at 48 h and after 1 week, respectively. Significant effects are observed in both parameters in fern spores at ng L(-1) but chlorophyll autofluorescence shows little changes. The inhibition of germination by natural allelochemicals has been reported to be related with the active hydroxyl group of phenolic compounds and largely independent of the structural nucleus to which it is attached. Results presented in this study suggest that environmental concentrations of nonylphenol could interfere with higher plant germination development by mimicking natural allelochemicals and/or phytohormones acting as a "phytoendocrine disruptor" likely posing ecophysiological risks.
Collapse
Affiliation(s)
- S Esteban
- Department of Preventive Medicine and Public Health, Immunology and Microbiology, Faculty of Health Science, Rey Juan Carlos University, C/Atenas s/n, E-28922, Alcorcón, Madrid, Spain; Ecotoxicology and Environmental Health Research Group (Toxamb), Rey Juan Carlos University, C/ Tulipán s/n, E-28933, Móstoles, Madrid, Spain.
| | - P M Llamas
- Biology and Geology, Physics and Analytical Chemistry, Rey Juan Carlos University, C/Tulipán s/n, E-28933, Mostóles, Madrid, Spain
| | - H García-Cortés
- Biology and Geology, Physics and Analytical Chemistry, Rey Juan Carlos University, C/Tulipán s/n, E-28933, Mostóles, Madrid, Spain
| | - M Catalá
- Biology and Geology, Physics and Analytical Chemistry, Rey Juan Carlos University, C/Tulipán s/n, E-28933, Mostóles, Madrid, Spain
| |
Collapse
|
19
|
Fang Y, Lu H, Chen S, Zhu K, Song H, Qian H. Leaf proteome analysis provides insights into the molecular mechanisms of bentazon detoxification in rice. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2015; 125:45-52. [PMID: 26615150 DOI: 10.1016/j.pestbp.2015.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/18/2015] [Accepted: 06/05/2015] [Indexed: 06/05/2023]
Abstract
Bentazon is a widely used herbicide that selectively removes broad-leaf weeds by competing with plastoquinone for the binding site in the D1 protein and interrupting the PET (photosynthetic electron transfer) chain. However, monocotyledonous plants, such as rice, show strong resistance to bentazon due to CYP81A6 induction, which results in herbicide detoxification. Here, we confirmed that rice was sensitive to bentazon treatment during the initial exposure period, in which bentazon rapidly inhibited photosynthesis efficiency and electron transfer, based on results of chlorophyll fluorescence analysis. In order to gain a comprehensive, pathway-oriented, mechanistic understanding of the effects directly induced by bentazon, we employed 2D-DIGE (two-dimensional difference gel electrophoresis) to analyze the leaf proteome after 8h of bentazon treatment coupled with individual protein identification by MALDI-TOF (Matrix assisted laser desorption/ionization-time of flight) MS/MS. Proteomic analyses revealed that bentazon induced the relative upregulation or downregulation of 30 and 71 proteins (by 1.5-fold or more, p<0.05), respectively. The pathways involved include photosynthesis processes, carbohydrate metabolism, antioxidant systems, and DNA stabilization and protein folding. Protein analysis data revealed that bentazon primarily suppressed photosynthesis processes, and showed inhibitory effects on carbohydrate metabolism and ATP synthesis, whereas several stress response proteins were induced in response to bentazon. Importantly, we identified a 519kD protein containing two histidine kinase-like ATPase domains and a C3HC4 RING type zinc finger domain which may function as a transcript factor to drive expression of detoxification genes such as CYP81A6, leading to bentazon tolerance. This study identifies, for the first time, a candidate transcription factor that could up-regulate CYP81A6 expression, and provides a foundation for further research to advance our knowledge of mechanisms of bentazon resistance in rice.
Collapse
Affiliation(s)
- Yingzhi Fang
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Haiping Lu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Si Chen
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Kun Zhu
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Hao Song
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Haifeng Qian
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China; Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi 830011, PR China.
| |
Collapse
|
20
|
Ding H, Wen D, Fu Z, Qian H. The secretion of organic acids is also regulated by factors other than aluminum. ENVIRONMENTAL MONITORING AND ASSESSMENT 2014; 186:1123-1131. [PMID: 24097010 DOI: 10.1007/s10661-013-3443-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 09/14/2013] [Indexed: 06/02/2023]
Abstract
As a result of natural processes and human activities, aluminum (Al) toxicity is recognized as a major limiting factor for plant productivity, and the secretion of organic acids facilitated by channel proteins is one of the most important Al resistance mechanisms in plants. The objective of this study was to evaluate the effects of several types of stress, including herbicide (imazethapyr (IM) and diclofop-methyl (DM)), heavy metal (Al and Cu), salt stress (NaCl), and proton stress (HCl), on the release of organic acids in rice. The results showed that 0.05 mg/L IM, 0.1 mg/L DM, 4680 mg/L NaCl, 0.5 mg/L CuSO4, and 18 mg/L AlCl3 significantly inhibited rice root elongation and the root fresh weight. In contrast, no significant inhibitory effects on rice growth were found with HCl (pH = 4.5). Similar to the effect of AlCl3 on organic acid induction, treatment with IM, DM, NaCl, and CuSO4 also induced the synthesis of endogenous citric acid and oxalic acid but decreased endogenous malic acid synthesis in the seedlings, though only citric acid was released into the environment after these treatments. We also analyzed the transcripts of three citrate channel proteins and found they were up-regulated by NaCl, CuSO4, and AlCl3 but not by IM or DM. This study clarified that organic acid secretion in plants might be a common phenomenon when plants are exposed to environmental stress other than Al toxicity.
Collapse
Affiliation(s)
- Haiyan Ding
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | | | | | | |
Collapse
|
21
|
Chen BS, Hsiao YL, Yen JH. Effect of octylphenol on physiologic features during growth in Arabidopsis thaliana. CHEMOSPHERE 2013; 93:2264-2268. [PMID: 24007619 DOI: 10.1016/j.chemosphere.2013.08.002] [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: 01/11/2013] [Revised: 07/30/2013] [Accepted: 08/01/2013] [Indexed: 06/02/2023]
Abstract
Alkylphenol ethoxylates are widely used as detergents, emulsifiers, solubilizers, wetting agents and dispersants. Octylphenol (OP) ethoxylates, one of alkylphenol ethoxylates, represent 15-20% of the market, and their metabolic residues may be discharged to surface waters, sediments and soils as a persistent and ubiquitous pollutant. We tested the response of Arabidopsis thaliana to different concentrations of OP. OP affected the germination percentage and mean germination period. 10d treatment with OP, especially high concentration (10 and 50 mg L(-1)), decreased shoot and root biomass and root length of 30 d-old A. thaliana. Content of chlorophyll was decreased but that of proline was increased in leaves with OP treatment. OP caused oxidative stress in leaves; malondialdehyde content was increased, and the activities of ascorbate peroxidase, catalase and superoxide dismutase were induced. OP affects the physiologic and morphologic features of A. thaliana during growth. Because plants might be exposed to OP for a long time in the surroundings, more attention needs to be paid to the effect of OP on plants.
Collapse
Affiliation(s)
- Bing-Sheng Chen
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
| | | | | |
Collapse
|
22
|
Chen BS, Yen JH. Effect of endocrine disruptor nonylphenol on physiologic features and proteome during growth in Arabidopsis thaliana. CHEMOSPHERE 2013; 91:468-474. [PMID: 23290178 DOI: 10.1016/j.chemosphere.2012.11.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 11/16/2012] [Accepted: 11/20/2012] [Indexed: 06/01/2023]
Abstract
We studied the effects of nonylphenol (NP) on physiological features and proteome of Arabidopsis (Arabidopsis thaliana) during growth. Shoot biomass, root biomass and root length were decreased after 10d of NP treatment, especially in high NP concentration treatment (10 and 50 mg L(-1)). Levels of chlorophyll decreased but proline increased in leaves. NP caused oxidative stress; malondialdehyde content was increased with NP treatment, and the activities of ascorbate peroxidase, catalase, CuZnSOD and MnSOD were induced in leaves. The proteome of leaf tissue was analyzed by 2-D gel electrophoresis and mass spectrometry. NP might adversely affect the CO2 assimilation, signal transduction, the endomembrane system and photosynthetic oxygen evolution. NP affects the proteome and physiologic and morphological features of A. thaliana during growth at the concentration can be observed in the environment. Because plants might be exposed to NP for a long time in the surroundings, more attention needs to be paid to the effect of NP on plants.
Collapse
Affiliation(s)
- Bing-Sheng Chen
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
| | | |
Collapse
|