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Sanpradit P, Niyomdecha S, Masae M, Peerakietkhajorn S. Thermal stress-stimulated ZnO toxicity inhibits reproduction of freshwater crustacean Daphnia magna. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123171. [PMID: 38128714 DOI: 10.1016/j.envpol.2023.123171] [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: 09/11/2023] [Revised: 12/03/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Elevated temperatures due to climate change pose a variety of environmental risks to the freshwater ecosystem. At the same time, zinc oxide (ZnO) has become widely used and has entered the freshwater environment. As thermal stress may potentially impact the physicochemical properties of ZnO, its toxicity to freshwater organisms in the face of global warming is poorly understood. The potential effects on reproductive performances, including oogenesis, are of particular concern. In this study, we investigate the reproductive performances and related mRNA abundance of the zooplankton Daphnia magna under conditions of ZnO exposure and heat stress. The results revealed that ZnO and elevated temperature delayed maturity and juvenile production of D. magna. Histological observations indicated that oogenesis was inhibited, and the number and size of oocytes were reduced in the condition of ZnO exposure under heat stress. Eventual offspring in the same treatment exhibited decreased numbers, size, and quality. Congenital juvenile anomalies were increased, such as deformed eye, and impaired antenna and tail spine. Moreover, both ZnO and elevated temperature treatments inhibited expression levels of reproduction-related genes (vtg, EcR and VMO1) and induced the dmrt93b gene involved in the production of male offspring. Furthermore, we found that D. magna tried to cope with ZnO and thermal stress by upregulating hsp90, HIF-1α and HIF-1β. ZnO and heat stress inhibited the reproductive capacity of D. magna, produced deleterious effects on reproduction-associated physiological pathways, and damaged reproductive outcomes.
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Affiliation(s)
- Paweena Sanpradit
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Seree Niyomdecha
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Murnee Masae
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Saranya Peerakietkhajorn
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
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2
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Kim EJ, Jeon D, Park YJ, Woo H, Eyun SI. Dietary exposure of the water flea Daphnia galeata to microcystin-LR. Anim Cells Syst (Seoul) 2024; 28:25-36. [PMID: 38298818 PMCID: PMC10829830 DOI: 10.1080/19768354.2024.2302529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/01/2024] [Indexed: 02/02/2024] Open
Abstract
Harmful substances like the cyanotoxin microcystin-leucine-arginine (MC-LR) are commonly found in eutrophic freshwater environments, posing risks to aquatic organisms. The water flea, Daphnia, is a well-established model organism for environmental toxicology research. Nevertheless, there is currently insufficient research on the genes that respond to MC-LR in Daphnia galeata. This study aimed to gain insights into the notable genes that react significantly to MC-LR. In this study, we generated an extensive RNA-Seq sequences isolated from the D. galeata HK strain, Han River in Korea. This strain was nourished with a diet of the green microalga Chlorella vulgaris and treated with pure MC-LR at a concentration of 36 ug/L. The transcriptome profile in response to the MC-LR treatment was obtained and 336 differentially expressed genes were subjected to Gene Ontology (GO) and euKaryotic Orthologous Groups of proteins analyses. GO enrichment analysis showed that chemical stimulus, amino sugar metabolic and catabolic process, oxidative stress, and detoxification were highly enriched, in reverse, proteolysis and fucosylation were underpresented. Detoxification process related genes such as peroxidase-like, chorion, and thyroid peroxidase-like were enriched for eliminating or neutralizing MC_LR from an organism's body. Furthermore, functional protein classification revealed an upregulation of lipid and inorganic ion transport processes, while amino acid and carbohydrate transport processes were found to be downregulated. These findings offer insights into how organisms respond to ecotoxic stimuli, providing valuable information for understanding adaptation or defense pathways.
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Affiliation(s)
- Eun-jeong Kim
- Department of Life Science, Chung-ang University, Seoul, Korea
| | - Donggu Jeon
- Department of Life Science, Chung-ang University, Seoul, Korea
| | - Yeon-jeong Park
- Water Environmental Management Department, Korea Water Resources Corporation (K-water), Daejeon, Korea
| | - Hyunmin Woo
- Department of Life Science, Chung-ang University, Seoul, Korea
| | - Seong-il Eyun
- Department of Life Science, Chung-ang University, Seoul, Korea
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3
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Xue R, Lan R, Su W, Wang Z, Li X, Zhao J, Ma C, Xing B. Mechanistic Understanding toward the Maternal Transfer of Nanoplastics in Daphnia magna. ACS NANO 2023. [PMID: 37449792 DOI: 10.1021/acsnano.3c01847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Nanoplastics induce transgenerational toxicity to aquatic organisms, but the specific pathways for the maternal transfer of nanoplastics remain unclear. Herein, laser scanning confocal microscopy (LSCM) observations identified the specific pathways on the maternal transfer of polystyrene (PS) nanoplastics (25 nm) in Daphnia magna. In vivo and in vitro experiments showed that PS nanoplastics could enter the brood chamber through its opening and then be internalized to eggs and embryos using LSCM imaging (pathway I). In addition, PS nanoplastics were observed in the oocytes of the ovary, demonstrating gut-ovary-oocyte transfer (pathway II). Furthermore, label-free hyperspectral imaging was used to detect the distribution of nanoplastics in the embryos and ovary of Daphnia, again confirming the maternal transfer of nanoplastics through the two pathways mentioned above. The contribution from pathway I (88%) was much higher than pathway II (12%) based on nanoflow cytometry quantification. In addition, maternal transfer in Daphnia depended on the particle size of PS nanoplastics, as demonstrated by using LSCM and hyperspectral imaging. Unlike 25 nm nanoplastics, 50 nm PS nanoplastics could enter the brood chamber and the eggs/embryos (pathway I), but were not detected in the ovary (pathway II); 100 nm PS nanoplastics were difficult to be internalized by eggs/embryos and could not enter the ovary either. These findings provide insight into the maternal transfer mechanisms of nanoplastics in Daphnia, and are critical for better understanding the transgenerational toxicity of aquatic organisms.
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Affiliation(s)
- Runze Xue
- Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology (Ministry of Education), Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Ruyi Lan
- Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology (Ministry of Education), Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266100, China
| | - Wenli Su
- Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology (Ministry of Education), Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266100, China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Xinyu Li
- Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology (Ministry of Education), Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266100, China
| | - Jian Zhao
- Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology (Ministry of Education), Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Chuanxin Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
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4
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Lowman RL, Yampolsky LY. Lipofuscin, amyloids, and lipid peroxidation as potential markers of aging in Daphnia. Biogerontology 2023:10.1007/s10522-023-10036-z. [PMID: 37195481 DOI: 10.1007/s10522-023-10036-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/20/2023] [Indexed: 05/18/2023]
Abstract
Accumulation of autofluorescent waste products, amyloids, and products of lipid peroxidation (LPO) are important hallmarks of aging. Until now, these processes have not been documented in Daphnia, a convenient model organism for longevity and senescence studies. We conducted a longitudinal cohort study of autofluorescence and Congo Red (CR) fluorescent staining for amyloids in four clones of D. magna. Additionally, we used a single time point cross-sectional common garden experiment within a single clone in which autofluorescence and BODIPY C11 fluorescence were measured. We observed a robust increase in autofluorescent spots that show diagnostic co-staining by Sudan Black indicating lipofuscin aggregates, particularly in the upper body region. There was also a significant clone-by-age interaction indicating that some genotypes accumulated lipofuscins faster than others. Contrary to predictions, CR fluorescence and lipid peroxidation did not consistently increase with age. CR fluorescence demonstrated a slight non-monotonous relationship with age, achieving the highest values at intermediate ages, possibly due to elimination of physiological heterogeneity in our genetically uniform cohorts. LPO demonstrated a significant ovary status-by-age interaction, decreasing with age when measured in Daphnia with full ovaries (late phase ovarian cycle) and showing no significant trend or slight increase with age when measured during the early phase in the ovarian cycle.
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Affiliation(s)
- R L Lowman
- Department of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614, USA
| | - L Y Yampolsky
- Department of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614, USA.
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5
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Takahata Y, Miyakawa H. Developmental Staging of Sexual Egg Formation in Daphnia pulex: Unmated Females Resorb Meiotic Oocytes to Resist Starvation. Zoolog Sci 2022; 39:407-412. [DOI: 10.2108/zs220010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/18/2022] [Indexed: 11/17/2022]
Affiliation(s)
- Yugo Takahata
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine-machi, Utsunomiya, Tochigi 321-8505, Japan
| | - Hitoshi Miyakawa
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine-machi, Utsunomiya, Tochigi 321-8505, Japan
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6
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McGann BN, Strecker AL. Zooplankton recovery from a whole‐lake disturbance: Examining roles of abiotic factors, biotic interactions, and traits. Ecosphere 2022. [DOI: 10.1002/ecs2.3983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Brian N. McGann
- Department of Environmental Science and Management Portland State University Portland Oregon USA
| | - Angela L. Strecker
- Institute for Watershed Studies Western Washington University Bellingham Washington USA
- Department of Environmental Sciences Western Washington University Bellingham Washington USA
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7
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Toyota K, Miyakawa H, Hiruta C, Sato T, Katayama H, Ohira T, Iguchi T. Sex Determination and Differentiation in Decapod and Cladoceran Crustaceans: An Overview of Endocrine Regulation. Genes (Basel) 2021; 12:genes12020305. [PMID: 33669984 PMCID: PMC7924870 DOI: 10.3390/genes12020305] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 02/07/2023] Open
Abstract
Mechanisms underlying sex determination and differentiation in animals are known to encompass a diverse array of molecular clues. Recent innovations in high-throughput sequencing and mass spectrometry technologies have been widely applied in non-model organisms without reference genomes. Crustaceans are no exception. They are particularly diverse among the Arthropoda and contain a wide variety of commercially important fishery species such as shrimps, lobsters and crabs (Order Decapoda), and keystone species of aquatic ecosystems such as water fleas (Order Branchiopoda). In terms of decapod sex determination and differentiation, previous approaches have attempted to elucidate their molecular components, to establish mono-sex breeding technology. Here, we overview reports describing the physiological functions of sex hormones regulating masculinization and feminization, and gene discovery by transcriptomics in decapod species. Moreover, this review summarizes the recent progresses of studies on the juvenile hormone-driven sex determination system of the branchiopod genus Daphnia, and then compares sex determination and endocrine systems between decapods and branchiopods. This review provides not only substantial insights for aquaculture research, but also the opportunity to re-organize the current and future trends of this field.
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Affiliation(s)
- Kenji Toyota
- Marine Biological Station, Sado Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
- Department of Biological Sciences, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-1293, Japan;
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika, Tokyo 125-8585, Japan
- Correspondence: (K.T.); (T.S.); (T.I.)
| | - Hitoshi Miyakawa
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Tochigi 321-8505, Japan;
| | - Chizue Hiruta
- Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan;
| | - Tomomi Sato
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa 236-0027, Japan
- Correspondence: (K.T.); (T.S.); (T.I.)
| | - Hidekazu Katayama
- Department of Applied Biochemistry, School of Engineering, Tokai University, Kanagawa 259-1292, Japan;
| | - Tsuyoshi Ohira
- Department of Biological Sciences, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-1293, Japan;
| | - Taisen Iguchi
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa 236-0027, Japan
- Correspondence: (K.T.); (T.S.); (T.I.)
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8
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Li J, Li H, Lin D, Li M, Wang Q, Xie S, Zhang Y, Liu F. Effects of butyl benzyl phthalate exposure on Daphnia magna growth, reproduction, embryonic development and transcriptomic responses. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124030. [PMID: 33045484 DOI: 10.1016/j.jhazmat.2020.124030] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 09/13/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Butyl benzyl phthalate (BBP) is widely used as a plasticizer to increase the plasticity and flexibility of plastic products. Although the potential health hazards of BBP have recently received extensive attention, its toxicological properties and mechanisms remain largely undefined. In the present work, growth, reproductive and developmental toxicity of BBP to Daphnia magna were evaluated, and the transcriptomic alteration of early embryos upon BBP exposure was analyzed. In a 21-day chronic toxicity test, reduced survival ratio, decreased body length, increased abnormal ratio, advanced time to first brood, and reduced offspring of D. magna were observed. BBP exposure inhibited expression of the vitellogenin gene. In addition, embryotoxicity of BBP was observed, which showed not only in the induction of abnormal neonates, but also in the shortened embryonic development cycle. RNA-Seq of early embryo treated with 0.1 mg/L BBP indicated that the pathways involved in signal transduction, cell communication, and embryonic development were significantly down-regulated, while those of biosynthesis, metabolism, cell homeostasis, redox homeostasis were remarkably up-regulated upon BBP exposure, which was consistent with the above phenotypic results. Taken together, our results highlight the toxic effects of BBP on the embryonic development and larval growth of D. magna.
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Affiliation(s)
- Jing Li
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Haotian Li
- Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Dongdong Lin
- Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Muyi Li
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Quansheng Wang
- Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Song Xie
- Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Yuming Zhang
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Fengsong Liu
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; Key Laboratory of zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
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9
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New frontiers of developmental endocrinology opened by researchers connecting irreversible effects of sex hormones on developing organs. Differentiation 2020; 118:4-23. [PMID: 33189416 DOI: 10.1016/j.diff.2020.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/12/2020] [Accepted: 10/25/2020] [Indexed: 01/17/2023]
Abstract
In the early 1960's, at Professor Bern's laboratory, University of California, Berkeley) in the US, Takasugi discovered ovary-independent, persistent vaginal changes in mice exposed neonatally to estrogen, which resulted in vaginal cancer later in life. Reproductive abnormalities in rodents were reported as a result of perinatal exposure to various estrogenic chemicals. Ten years later, vaginal cancers were reported in young women exposed in utero to the synthetic estrogen diethylstilbestrol (DES) and this has been called the "DES syndrome". The developing organism is particularly sensitive to developmental exposure to estrogens inducing long-term changes in various organs including the reproductive organs. The molecular mechanism underlying the persistent vaginal changes induced by perinatal estrogen exposure was partly demonstrated. Persistent phosphorylation and sustained expression of EGF-like growth factors, lead to estrogen receptor α (ESR1) activation, and then persistent vaginal epithelial cell proliferation. Agents which are weakly estrogenic by postnatal criteria may have major developmental effects, especially during a critical perinatal period. The present review outlines various studies conducted by four generations of investigators all under the influence of Prof. Bern. The studies include reports of persistent changes induced by neonatal androgen exposure, analyses of estrogen responsive genes, factors determining epithelial differentiation in the Müllerian duct, ESR and growth factor signaling, and polyovular follicles in mammals. This review is then expanded to the studies on the effects of environmental estrogens on wildlife and endocrine disruption in Daphnids.
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10
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Toyota K, Sato T, Iguchi T, Ohira T. Methyl farnesoate regulatory mechanisms underlying photoperiod-dependent sex determination in the freshwater crustacean Daphnia magna. J Appl Toxicol 2020; 41:216-223. [PMID: 32662114 DOI: 10.1002/jat.4035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/06/2020] [Accepted: 06/22/2020] [Indexed: 11/08/2022]
Abstract
Freshwater zooplankton Daphnia magna has been widely used in ecotoxicology studies. During the last 20 years, it has been demonstrated that the topical application of juvenile hormone (JH) or JH analogs to mother daphnids induce male offspring production. Based on this finding, an in vivo screening validation method for chemicals with JH agonistic effect has developed. Although this screening system successfully identified a number of JH-like chemicals, molecular mechanisms underlying the male sex-determining process remain largely unknown. To address this issue, we established a reliable male- or female-producing system using Daphnia pulex WTN6 strain by changing the rearing photoperiod. Taking advantage of this rearing system, we successfully found several factors involving male sex determination such as ionotropic glutamate receptors, protein kinase C and pantothenate. Here, we used two D. magna strains that can also control the production of female or male offspring by photoperiod differences as model species for ecotoxicology studies. We demonstrated that either treatment of antagonist of ionotropic glutamate receptors or inhibitor of protein kinase C strongly suppressed male offspring production even under male-producing conditions. Moreover, we revealed that male sex-determining processes are likely diverged between D. magna and D. pulex based on the current experiment. This study provides a fine experimental method for in vivo screening not only JH agonists but also JH antagonists. Moreover, using daphnids with photoperiod-dependent sex determination manner will hugely contribute to understanding the mode-of-action of JH in daphnids.
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Affiliation(s)
- Kenji Toyota
- Department of Biological Sciences, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa, Japan.,Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Tomomi Sato
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Taisen Iguchi
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Tsuyoshi Ohira
- Department of Biological Sciences, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa, Japan
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11
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Hasoon MSR, Plaistow SJ. Embryogenesis plasticity and the transmission of maternal effects in Daphnia pulex. Evol Dev 2020; 22:345-357. [PMID: 32579775 DOI: 10.1111/ede.12346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding how genetic, nongenetic, and environmental cues are integrated during development may be critical in understanding if, and how, organisms will respond to rapid environmental change. Normally, only post-embryonic studies are possible. But in this study, we developed a real-time, high-throughput confocal microscope assay that allowed us to link Daphnia embryogenesis to offspring life history variation at the individual level. Our assay identified eight clear developmental phenotypes linked by seven developmental stages, the duration of which were correlated with the expression of specific offspring life history traits. Daphnia embryogenesis varied not only between clones reared in the same environment, but also within a single clone when mothers were of different ages or reared in different food environments. Our results support the hypothesis that Daphnia embryogenesis is plastic and can be altered by changes in maternal state or maternal environment. As well as furthering our understanding of the mechanisms underpinning parental effects, our assay may also have an industrial application if it can be used as a rapid ecotoxicological prescreen for testing the effect that pollutant doses have on offspring life histories traditionally assayed with a 21-day Daphnia reproduction test.
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Affiliation(s)
- Megan S R Hasoon
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK.,Department of Biology, University of York, York, UK
| | - Stewart J Plaistow
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
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12
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Xu EG, Cheong RS, Liu L, Hernandez LM, Azimzada A, Bayen S, Tufenkji N. Primary and Secondary Plastic Particles Exhibit Limited Acute Toxicity but Chronic Effects on Daphnia magna. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6859-6868. [PMID: 32421333 DOI: 10.1021/acs.est.0c00245] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nanoplastics (NPs; <0.1 μm) are speculated to be a bigger ecological threat due to their predicted wider distribution, higher concentrations, and bioavailability. Primary NPs are manufactured to be that size, while secondary NPs originate from fragmentation of bigger debris. To date, the long-term impact of NPs in freshwater systems, particularly secondary NPs, is not well-understood. Thus, we employed a freshwater invertebrate, Daphnia magna, to investigate the chronic effects of model primary NPs, fluorescent polystyrene nanospheres (PS-NPs; 20 nm), and water leachate of weathered single-use plastics that contained micro- and nanosized particles. In experiment 1, parent Daphnia (F0) were exposed to 1 and 50 mg/L PS-NPs until the production of the neonates (F1) followed by a two-generation recovery. PS-NPs were mainly detected in the intestine and brood chamber in F0 and transferred to F1 and F2. PS-NPs significantly decreased the appendage curling and heartbeat rate in F0 and reduced reproduction in F2. In experiment 2, the plastic leachate also reduced the appendage curling rate but increased growth and reproduction. The results suggest that the acute toxicity of primary and secondary plastic particles is low even at high concentrations, but their chronic and sublethal effects should not be overlooked.
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Affiliation(s)
- Elvis Genbo Xu
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Rachel S Cheong
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Lan Liu
- Department of Food Science and Agricultural Chemistry, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Laura M Hernandez
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Agil Azimzada
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Stéphane Bayen
- Department of Food Science and Agricultural Chemistry, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
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13
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Zheng Y, Yuan J, Gu Z, Yang G, Li T, Chen J. Transcriptome alterations in female Daphnia (Daphnia magna) exposed to 17β-estradiol. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114208. [PMID: 32097791 DOI: 10.1016/j.envpol.2020.114208] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/08/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
The molecular mechanism of evaluating 17β-estradiol (E2)-induced toxicity in female Daphnia magna has not been determined. In this study, the transcriptome of D. magna was analyzed after exposure to three different concentrations (0, 10, and 100 ng L-1) of E2 at 3, 6, and 12 h. The results showed 351-17,221 significantly up-regulated and 505-10,282 significantly down-regulated genes (P < 0.05). Overall, the selected largest 10,282 (10 ng L-1vs control at 12 h) down-regulated and 17,221 (100 vs 10 ng L-1) up-regulated genes were identified; following annotation, pathways in cancer and RNA transport were found to be enriched according to the interaction network. Among all completed comparisons, KEGG pathways related to the immune system, cancer, disease infection, and active compound metabolism were identified by short time series expression miner analysis. A different set of genes fluctuated in a "U"-shaped pattern over time and at different concentrations of E2, whereas some genes associated with disintoxication showed a reverse "U"-shaped response as E2 administration was increased. These results suggest that E2 exposure caused transcriptional changes in the immune system, disintoxication, disease prevention, and the protein degradation pathway.
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Affiliation(s)
- Yao Zheng
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences/Fishery Eco-Environment Monitoring Center of Lower Reaches of Yangtze River/Wuxi Fishery College, Nanjing Agricultural University, Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi), Ministry of Agriculture, Wuxi, Jiangsu, 214081, China
| | - Julin Yuan
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Freshwater Aquaculture Genetic and Breeding of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, 313001, China
| | - Zhimin Gu
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Freshwater Aquaculture Genetic and Breeding of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, 313001, China
| | - Guang Yang
- Fisheries Engineering Institute, Chinese Academy of Fishery Sciences, Beijing, 100000, PR China
| | - Tian Li
- Fisheries Engineering Institute, Chinese Academy of Fishery Sciences, Beijing, 100000, PR China
| | - Jiazhang Chen
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences/Fishery Eco-Environment Monitoring Center of Lower Reaches of Yangtze River/Wuxi Fishery College, Nanjing Agricultural University, Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi), Ministry of Agriculture, Wuxi, Jiangsu, 214081, China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture, Beijing, 100039, PR China.
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Toyota K, Sato T, Tatarazako N, Iguchi T. Photoperiodism of Male Offspring Production in the Water Flea Daphnia pulex. Zoolog Sci 2017; 34:312-317. [DOI: 10.2108/zs170005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Kenji Toyota
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences, Department of Basic Biology, Faculty of Life Science, SOKENDAI (Graduate University for Advanced Studies), 5-1 Higashiyama, M
| | - Tomomi Sato
- Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto,Kanazawa-ku, Yokohama 236-0027, Japan
| | - Norihisa Tatarazako
- Ecotoxicity Reference Laboratory, Risk Assessment Science Collaboration Office, Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Taisen Iguchi
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences, Department of Basic Biology, Faculty of Life Science, SOKENDAI (Graduate University for Advanced Studies), 5-1 Higashiyama, M
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15
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Toyota K, Gavin A, Miyagawa S, Viant MR, Iguchi T. Metabolomics reveals an involvement of pantothenate for male production responding to the short-day stimulus in the water flea, Daphnia pulex. Sci Rep 2016; 6:25125. [PMID: 27113113 PMCID: PMC4844948 DOI: 10.1038/srep25125] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 04/12/2016] [Indexed: 12/05/2022] Open
Abstract
Under favorable conditions, the micro-crustacean Daphnia pulex produces female offspring by parthenogenesis, whereas under unfavorable conditions, they produce male offspring to induce sexual reproduction (environmental sex determination: ESD). We recently established a suitable system for ESD studies using D. pulex WTN6 strain, in which the sex of the offspring can be regulated by alterations in day-length; long-day and short-day conditions can induce female and male offspring, respectively. Taking advantage of this system, we have already demonstrated that methyl farnesoate (MF) synthesis is necessary for male offspring production, and identified ionotropic glutamate receptors as an upstream regulator of MF signaling. Despite these findings, the molecular mechanisms associated with MF signaling have not yet been well elucidated. In this study, we analyzed the whole metabolic profiles of mother daphnids reared under long-day (female-producing) and short-day (male-producing) conditions, and discovered that pantothenate (vitamin B5), a known precursor to coenzyme A, was significantly accumulated in response to the short-day condition. To confirm the innate role of pantothenate in D. pulex, this metabolite was administered to mother daphnids resulting in a significantly increased proportion of male offspring producing mothers. This study provides novel insights of the metabolic mechanisms of the ESD system in D. pulex.
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Affiliation(s)
- Kenji Toyota
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences, and Department of Basic Biology, Faculty of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan.,Environmental Genomics Group, School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Alex Gavin
- Environmental Metabolomics Research Group, School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Shinichi Miyagawa
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences, and Department of Basic Biology, Faculty of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Mark R Viant
- Environmental Metabolomics Research Group, School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Taisen Iguchi
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, National Institutes of Natural Sciences, and Department of Basic Biology, Faculty of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
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