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Ferreira ANC, Ferreira WC, Duarte AV, Santos CC, Freire PTC, Luz-Lima C, Moura JVB. In situ high-temperature Raman scattering study of monoclinic Ag 2Mo 2O 7 microrods. Spectrochim Acta A Mol Biomol Spectrosc 2023; 295:122632. [PMID: 36958242 DOI: 10.1016/j.saa.2023.122632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
In this work, we present a temperature-dependent behavior of monoclinic silver dimolybdate (m-Ag2Mo2O7) microrods using in situ Raman scattering. The m-Ag2Mo2O7 microrods were obtained by the conventional hydrothermal method at 423 K for 24 h. The structural and morphological characterization of the sample has been done by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Temperature-dependent Raman scattering measurements were performed on m-Ag2Mo2O7 microrods, and the results show an irreversible first-order structural phase transition at 698 K-723 K and the melting process at 773 K. Changes in the Raman spectra confirm the phase transition from the P21/c monoclinic structure to the P-1 triclinic structure. No morphological changes were observed during the structural phase transition of the sample at 723 K. Time-dependent optical microscopy at 773 K showed the growth of nanowires on the Ag2Mo2O7 microrods in the triclinic structure.
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Affiliation(s)
- A N C Ferreira
- Departamento de Física, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, CEP 65080-80, São Luís, MA, Brazil
| | - W C Ferreira
- Lyman Laboratory of Physics, Harvard University, Cambridge, MA 02138, USA
| | - A V Duarte
- Laboratório de Caracterização de Materiais, Centro de Ciências e Tecnologia, Universidade Federal do Cariri, CEP 63048-080, Juazeiro do Norte, CE, Brazil
| | - C C Santos
- Departamento de Física, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, CEP 65080-80, São Luís, MA, Brazil
| | - P T C Freire
- Departamento de Física, Campus do Pici, Universidade Federal do Ceará, CEP 60455-760, Fortaleza, CE, Brazil
| | - C Luz-Lima
- Departamento de Física, Campus Ministro Petrônio Portella, Universidade Federal do Piauí, CEP 64049-550, Teresina, PI, Brazil
| | - J V B Moura
- Departamento de Física, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, CEP 65080-80, São Luís, MA, Brazil.
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2
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Xie J, Wang S, Lu T, Yang S, Zou L, Ren J, Lu X, Huang J, Huang C, Yang P. Evaluating high temperature photoelectrocatalysis of TiO 2 model photoanode. J Colloid Interface Sci 2023; 645:765-774. [PMID: 37172486 DOI: 10.1016/j.jcis.2023.05.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/14/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023]
Abstract
Sunlight concentration has been demonstrated as one promising strategy for practically photoelectrochemical (PEC) water splitting with exceeding 10% solar-to-hydrogen efficiency. However, the operating temperature of PEC devices, including the electrolyte and photoelectrodes, can be elevated to 65 ℃ naturally due to the concentrated sunlight and the thermal effect of near-infrared light. In this work, high temperature photoelectrocatalysis is evaluated using titanium dioxide (TiO2) photoanode as a model system, which is believed to be one of the most stable semiconductors. During the studied temperature range of 25-65 ℃, a linear increment of photocurrent density with a positive coefficient of 5.02 μA cm-2 K-1 can be observed. The onset potential for water electrolysis shows a significant negative shift by 200 mV. An amorphous titanium hydroxide layer and a number of oxygen vacancies generate on the surface of TiO2 nanorods, promoting the water oxidation kinetics. During long-term stability testing, the NaOH electrolyte degradation and TiO2 photocorrosion at high temperatures could cause the decaying photocurrent. This work evaluates the high temperature photoelectrocatalysis of TiO2 photoanode and reveals the mechanism of temperature effects on TiO2 model photoanode.
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Affiliation(s)
- Jiale Xie
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China.
| | - Shuxiang Wang
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Tianmou Lu
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Sen Yang
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Li Zou
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Jie Ren
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Xingyu Lu
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Jing Huang
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Cheng Huang
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Pingping Yang
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, People's Republic of China
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Wang YX, Lin SR, Xu LZ, Ye YY, Qi PZ, Wang WF, Buttino I, Li HF, Guo BY. Comparative transcriptomic analysis revealed changes in multiple signaling pathways involved in protein degradation in the digestive gland of Mytilus coruscus during high-temperatures. Comp Biochem Physiol Part D Genomics Proteomics 2023; 46:101060. [PMID: 36731219 DOI: 10.1016/j.cbd.2023.101060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 01/28/2023]
Abstract
As a result of global warming, the Mytilus coruscus living attached in the intertidal zone experience extreme and fluctuating changes in temperature, and extreme temperature changes are causing mass mortality of intertidal species. This study explores the transcriptional response of M. coruscus at different temperatures (18 °C, 26 °C, and 33 °C) and different times (0, 12, and 24 h) of action by analyzing the potential temperature of the intertidal zone. In response to high temperatures, several signaling pathways in M. coruscus, ribosome, endocytosis, endoplasmic reticulum stress, protein degradation, and lysosomes, interact to counter the adverse effects of high temperatures on protein homeostasis. Increased expression of key genes, including heat shock proteins (Hsp70, Hsp20, and Hsp110), Lysosome-associated membrane glycoprotein (LAMP), endoplasmic reticulum chaperone (BiP), and baculoviral IAP repeat-containing protein 7 (BIRC7), may further mitigate the effects of heat stress and delay mortality in M. coruscus. These results reveal changes in multiple signaling pathways involved in protein degradation during high-temperature stress, which will contribute to our overall understanding of the molecular mechanisms underlying the response of M. coruscus to high-temperature stress.
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Affiliation(s)
- Yu-Xia Wang
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China
| | - Shuang-Rui Lin
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China
| | - Le-Zhong Xu
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China
| | - Ying-Ying Ye
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China
| | - Peng-Zhi Qi
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China
| | - Wei-Feng Wang
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China
| | - Isabella Buttino
- Italian Institute for Environmental Protection and Research ISPRA, Via del Cedro n.38, 57122 Livorno, Italy
| | - Hong-Fei Li
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China.
| | - Bao-Ying Guo
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, 316022 Zhoushan, China.
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von Herbing IH, Pan FTC. Multiple stressors, allostasis and metabolic scaling in developing zebrafish. J Exp Biol 2022; 225:278471. [PMID: 36172880 DOI: 10.1242/jeb.244095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 09/20/2022] [Indexed: 11/20/2022]
Abstract
Deoxygenation and warming affect adult fish physiology in all aquatic ecosystems, but how these stressors impact the energetics of sensitive developing stages is largely unknown. Addressing this knowledge gap, we investigated chronic and acute effects of two stressors (high-temperature and hypoxia) in yolk-sac larval (48-168 hpf) zebrafish (Danio rerio) energy budgets measuring, oxygen consumption rate (ṀO2), growth rate (absolute (AGR) & specific (SGR)), % net conversion efficiency (KN), net cost of growth (Cr) and scaling relationships. Embryos and larvae were raised under four chronic treatments, 1) control (28°C & pO2 21kPa, T28O21), 2) high-temperature (31°C & pO2 21kPa, T31O21), 3) hypoxia (28°C & pO2 11kPa, T28TO11), and 4) high-temperature and hypoxia (31°C & pO2 11kPa, T31O11). From each chronic treatment, larvae were acutely exposed to the same combinations of stressors for 1h in a respirometer. At hatching, larvae from chronic high-temperature (T31O21 & T31O11) treatments were larger, (higher dry mass (MD) & standard length (Ls)) than controls (T28O21 & T28O11), but by the end of the yolk-sac stage, increased metabolic demands diverted energy away from growth increasing Cr and lowering % KN. Control metabolic scaling relationships were significant (metabolic exponent b, log-log slope; 0.83±0.68±95% CI, combined b of 1.19±0.25) and differed from 0.75, but metabolic levels (La) were lower (2.11±0.90) in acute hypoxia (3.35±1.52) and high-temperature/hypoxia (2.61±1.55). Thus, high-temperature dominated larval energetics acting synergistically with hypoxia increasing cumulative energetic costs and making allostasis difficult compared to older stages.
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Affiliation(s)
- Ione Hunt von Herbing
- Department of Biological Sciences, University of North Texas, Denton, Texas 76203-5017, USA
| | - Francis T C Pan
- Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089-0371, USA
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Dubey A, Kumar K, Srinivasan T, Kondreddy A, Kumar KRR. An invasive weed-associated bacteria confers enhanced heat stress tolerance in wheat. Heliyon 2022; 8:e09893. [PMID: 35865978 PMCID: PMC9293653 DOI: 10.1016/j.heliyon.2022.e09893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/09/2022] [Accepted: 07/01/2022] [Indexed: 11/20/2022] Open
Abstract
Global temperatures are expected to increase due to climate change, and heat stress is one of the major limiting factors affecting future agriculture. To identify plant-associated microorganisms which can promote heat stress tolerance in wheat, we have screened several bacteria isolated from etiolated seedlings of the invasive noxious weed Parthenium hysterophorus. One isolate designated as Ph-04 was found to confer enhanced heat stress tolerance in wheat. The 16S rRNA gene sequence analysis showed that Ph-04 isolate shared highest sequence identity with Bacillus paramycoides species of the Bacillus cereus group. Ph-04 treated wheat seeds exhibited enhanced germination, longer coleoptile, radicle and seminal root length than control seedlings when grown in the dark at optimum and high temperatures. Similarly, under autotrophic conditions, Ph-04 treated plants also exhibited enhanced heat stress tolerance with a significant increase in membrane integrity and significantly reduced levels of H2O2 under heat stress compared to control plants. This observed heat stress tolerance is associated with constitutively higher basal levels of proline, and activity of antioxidant enzymes, catalase (CAT) and ascorbate peroxidase (APX) in Ph-04 treated plants grown under unstressed conditions with further increase under heat stress conditions compared to controls. Plant recovery after heat stress also showed that the Ph-04 treated plants exhibited significantly less damage in terms of survival percentage and exhibited better morphological and physiological characteristics compared to control plants. The study proves that invasive weeds can harbour potentially beneficial microorganisms, which can be transferred to non-native crop (host) plants to improve climate resilience characteristics.
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Affiliation(s)
- Ankita Dubey
- Department of Biotechnology, Indira Gandhi National Tribal University (IGNTU), Amarkantak 484887, India
| | - Kundan Kumar
- Department of Biotechnology, Indira Gandhi National Tribal University (IGNTU), Amarkantak 484887, India
| | - Tantravahi Srinivasan
- Department of Botany, Indira Gandhi National Tribal University (IGNTU), Amarkantak 484887, India
| | - Anil Kondreddy
- ASPIRE-BioNEST, University of Hyderabad, Hyderabad 500046, India
| | - Koppolu Raja Rajesh Kumar
- Department of Biotechnology, Indira Gandhi National Tribal University (IGNTU), Amarkantak 484887, India
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Nandasiri R, Eskin NAM. Canolol and its derivatives: A novel bioactive with antioxidant and anticancer properties. Adv Food Nutr Res 2022; 100:109-129. [PMID: 35659350 DOI: 10.1016/bs.afnr.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The health and safety concerns associated with synthetic antioxidants has resulted in an urgent search for natural sources of antioxidants. Such antioxidants are not only convenient but may also have important therapeutic properties. Oilseed crops, for example, are rich in phenolic compounds some of which exhibit powerful antioxidant properties that have broad applications in both the food and feed industry. Often, the concentration of these phenolic compounds is affected by many processing conditions including temperature, pressure, pH, and extracting solvents. Hence it is important to optimize processing conditions to obtain maximum levels of those antioxidants with superior antioxidant activity. Oilseeds, such as canola and mustard, are rich sources of sinapates and kaempferol derivatives. When subjected to different processing conditions, including pressurized temperature, sinapates are converted to vinyl phenol derivatives, of which the major one is canolol. This chapter will focus on the nature of canolol and its applications in food and medicine.
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Affiliation(s)
- Ruchira Nandasiri
- Department of Food & Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada; Richardson Centre for Functional Foods & Nutraceuticals, Winnipeg, MB, Canada
| | - N A Michael Eskin
- Department of Food & Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.
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Feng JQ, Wang JH, Zhang SB. Leaf physiological and anatomical responses of two sympatric Paphiopedilum species to temperature. Plant Divers 2022; 44:101-108. [PMID: 35281120 PMCID: PMC8897187 DOI: 10.1016/j.pld.2021.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/19/2021] [Accepted: 05/05/2021] [Indexed: 06/14/2023]
Abstract
Paphiopedilum dianthum and P. micranthum are two endangered orchid species, with high ornamental and conservation values. They are sympatric species, but their leaf anatomical traits and flowering period have significant differences. However, it is unclear whether the differences in leaf structure of the two species will affect their adaptabilities to temperature. Here, we investigated the leaf photosynthetic, anatomical, and flowering traits of these two species at three sites with different temperatures (Kunming, 16.7 ± 0.2 °C; Puer, 17.7 ± 0.2 °C; Menglun, 23.3 ± 0.2 °C) in southwest China. Compared with those at Puer and Kunming, the values of light-saturated photosynthetic rate (Pmax), stomatal conductance (gs), leaf thickness (LT), and stomatal density (SD) in both species were lower at Menglun. The values of Pmax, gs, LT, adaxial cuticle thickness (CTad) and SD in P. dianthum were higher than those of P. micranthum at the three sites. Compared with P. dianthum, there were no flowering plants of P. micranthum at Menglun. These results indicated that both species were less resistance to high temperature, and P. dianthum had a stronger adaptability to high-temperature than P. micranthum. Our findings can provide valuable information for the conservation and cultivation of Paphiopedilum species.
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Affiliation(s)
- Jing-Qiu Feng
- Key Laboratory of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ji-Hua Wang
- Flower Research Institute of Yunnan Academy of Agricultural Sciences, Kunming, 650205, Yunnan, China
| | - Shi-Bao Zhang
- Key Laboratory of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, China
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Ding H, Qian L, Jiang H, Ji Y, Fang Y, Sheng J, Xu X, Ge C. Overexpression of a Bcl-2-associated athanogene SlBAG9 negatively regulates high-temperature response in tomato. Int J Biol Macromol 2022; 194:695-705. [PMID: 34822834 DOI: 10.1016/j.ijbiomac.2021.11.114] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/07/2021] [Accepted: 11/16/2021] [Indexed: 12/18/2022]
Abstract
The Bcl-2-associated athanogene (BAG) gene is a multi-functional family of co-chaperones regulator, modulating plant stress response. Our previous study revealed that the SlBAG9 of tomato (Solanum lycopersicum) had the higher expression level induced by high-temperature (HT) at the transcriptional and protein levels, but its biological function was still unclear. Here, we conducted an in-depth analysis of SlBAG9. SlBAG9 protein was not located in the mitochondria but in the cytoplasm and nucleus. Many cis-acting elements involved in plant stress and hormone responses were located in the promoter regions of SlBAG9 including heat-shock element (HSE1). The β-glucuronidase (GUS) histochemical analysis showed that SlBAG9 promoter could drive GUS gene expression in transiently transformed Nicotiana tabacum leaves under non-inducing condition and HSE1 is critical for HT-induced GUS activity under HT. The transcription of SlBAG9 was expressed in different organs and was regulated by HT, cold, drought, and salt stresses as well as exogenous abscisic acid (ABA) and H2O2. To further elucidate SlBAG9 function in response to HT, the transgenic tomato plants overexpressing SlBAG9 were developed. Compared to the wild-type plants, SlBAG9-overexpressing plants exhibited more sensitivity to HT stress, reflected by the burning symptoms, the degradation of chlorophyll, and the reduction of photosynthetic rates. Additionally, SlBAG9-overexpressing lines showed higher accumulation of lipid peroxidation production (MDA) and H2O2, but lower activities of superoxide dismutase, catalase, and peroxidase. Therefore, it is speculated that SlBAG9 plays a negative role in thermotolerance probably by inhibition of antioxidant enzyme system leading to the oxidative damage, consequently aggravating the HT-caused injury phenotype.
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Affiliation(s)
- Haidong Ding
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China.
| | - Lu Qian
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Hailong Jiang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Yurong Ji
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Yifang Fang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Jiarong Sheng
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Xiaoying Xu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
| | - Cailin Ge
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China
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Park JR, Kim EG, Jang YH, Kim KM. Screening and identification of genes affecting grain quality and spikelet fertility during high-temperature treatment in grain filling stage of rice. BMC Plant Biol 2021; 21:263. [PMID: 34098898 PMCID: PMC8186072 DOI: 10.1186/s12870-021-03056-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/17/2021] [Indexed: 05/14/2023]
Abstract
BACKGROUND Recent temperature increases due to rapid climate change have negatively affected rice yield and grain quality. Particularly, high temperatures during right after the flowering stage reduce spikelet fertility, while interfering with sugar energy transport, and cause severe damage to grain quality by forming chalkiness grains. The effect of high-temperature on spikelet fertility and grain quality during grain filling stage was evaluated using a double haploid line derived from another culture of F1 by crossing Cheongcheong and Nagdong cultivars. Quantitative trait locus (QTL) mapping identifies candidate genes significantly associated with spikelet fertility and grain quality at high temperatures. RESULTS Our analysis screened OsSFq3 that contributes to spikelet fertility and grain quality at high-temperature. OsSFq3 was fine-mapped in the region RM15749-RM15689 on chromosome 3, wherein four candidate genes related to the synthesis and decomposition of amylose, a starch component, were predicted. Four major candidate genes, including OsSFq3, and 10 different genes involved in the synthesis and decomposition of amylose and amylopectin, which are starch constituents, together with relative expression levels were analyzed. OsSFq3 was highly expressed during the initial stage of high-temperature treatment. It exhibited high homology with FLOURY ENDOSPERM 6 in Gramineae plants and is therefore expected to function similarly. CONCLUSION The QTL, major candidate genes, and OsSFq3 identified herein could be effectively used in breeding rice varieties to improve grain quality, while tolerating high temperatures, to cope with climate changes. Furthermore, linked markers can aid in marker-assisted selection of high-quality and -yield rice varieties tolerant to high temperatures.
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Affiliation(s)
- Jae-Ryoung Park
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566 Republic of Korea
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu, 41566 Republic of Korea
| | - Eun-Gyeong Kim
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566 Republic of Korea
| | - Yoon-Hee Jang
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566 Republic of Korea
| | - Kyung-Min Kim
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566 Republic of Korea
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu, 41566 Republic of Korea
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10
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Wyatt BC, Nemani SK, Anasori B. 2D transition metal carbides (MXenes) in metal and ceramic matrix composites. Nano Converg 2021; 8:16. [PMID: 34076789 PMCID: PMC8172761 DOI: 10.1186/s40580-021-00266-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 05/10/2021] [Indexed: 05/19/2023]
Abstract
Two-dimensional transition metal carbides, nitrides, and carbonitrides (known as MXenes) have evolved as competitive materials and fillers for developing composites and hybrids for applications ranging from catalysis, energy storage, selective ion filtration, electromagnetic wave attenuation, and electronic/piezoelectric behavior. MXenes' incorporation into metal matrix and ceramic matrix composites is a growing field with significant potential due to their impressive mechanical, electrical, and chemical behavior. With about 50 synthesized MXene compositions, the degree of control over their composition and structure paired with their high-temperature stability is unique in the field of 2D materials. As a result, MXenes offer a new avenue for application driven design of functional and structural composites with tailorable mechanical, electrical, and thermochemical properties. In this article, we review recent developments for use of MXenes in metal and ceramic composites and provide an outlook for future research in this field.
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Affiliation(s)
- Brian C Wyatt
- Department of Mechanical and Energy Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, 46202, Indianapolis, IN, USA
- Integrated Nanosystems Development Institute, Indiana University-Purdue University Indianapolis, IN, 46202, Indianapolis, USA
| | - Srinivasa Kartik Nemani
- Department of Mechanical and Energy Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, 46202, Indianapolis, IN, USA
- Integrated Nanosystems Development Institute, Indiana University-Purdue University Indianapolis, IN, 46202, Indianapolis, USA
| | - Babak Anasori
- Department of Mechanical and Energy Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University Indianapolis, 46202, Indianapolis, IN, USA.
- Integrated Nanosystems Development Institute, Indiana University-Purdue University Indianapolis, IN, 46202, Indianapolis, USA.
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11
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Li J, Zhou X, Jin Z. Effect of high-temperatures and aqueous ethanol treatment on the formation process and properties of V-type Granular Starch (VGS). Carbohydr Polym 2021; 258:117713. [PMID: 33593578 DOI: 10.1016/j.carbpol.2021.117713] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/20/2020] [Accepted: 01/23/2021] [Indexed: 10/22/2022]
Abstract
Starch-water-ethanol mixtures were heated between 80 and 160 °C. The formation process of V-type granular starch (VGS) was investigated. DSC analysis showed that starch gelatinization was completely inhibited in 70 % ethanol. Microscopic analysis showed that starch remained granular morphology after modification, but when temperature exceeded 110 °C, Maltese cross and A-type crystalline structure disappeared, a V-type crystalline structure developed with increasing temperature, and short-range order of modified starch was reduced. It was indicated that VGS was formed at temperatures exceeding 110 °C in 70 % ethanol. When temperature was increased from 80 to 140 °C, starch cold-water viscosity increased from 17.00 cP to 1932.00 cP. Further temperature increase resulted in decreased cold-water viscosity because of starch degradation. It was found that cold-water viscosity was positively correlated with the crystallinity of V-type starch structure. Ethanol washing before drying made VGS dispersed better, and strengthened V-type crystalline structure, so that ethanol washed VGS had better paste properties.
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Affiliation(s)
- Jiaxin Li
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Xing Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Zhengyu Jin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China.
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12
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Leng H, Feng D, Gao J, Zhang Y, Zhao Y, Du Q, Chang G, Guo Q, Wang X, Sun S. Effect of high-temperature and microwave expanding modification on reactivity of coal char for char-NO interaction. Sci Total Environ 2021; 760:144028. [PMID: 33340736 DOI: 10.1016/j.scitotenv.2020.144028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/26/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Coal-fired industrial boiler has become a large source of atmospheric pollutants in China, urging to achieve low NOx emissions. This paper adjusts the coal char structure with high-temperature/microwave expanding modification to investigate the char-NO interaction. The results show that after high-temperature or microwave expansion, the pore structure of char is further expanded with more new pore structure of 2-12 nm. The proper expansion temperature/power/treatment-time increases the ablation collapse of char pores and the order of carbon structure. With microwave, COC and CO bands break, forming a large amount of aromatic CC unsaturated carbon atoms, incrseasing the surface active sites of char-NO interaction. The optimum modifications of char-NO reactivity are 800 °C-90 s and 960 W-90 s. The reduction rate of NO by microwave modified char decreases with increase of inlet NO (<1200 ppm), and increases with increase of inlet CO (<8000 ppm). Burnout time of microwave modified char is shortened, with more rapid release of NO and larger conversion rate of char-N to NO. With microwave field, the conversion rate of char-N to NO at 900 °C is more significant than that at 600 °C. The too large microwave power cannot further shorten the char burnout time and the release time of NO.
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Affiliation(s)
- Hao Leng
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; Bureau of Special Equipment Safety Supervision of State Administration for Market Regulation, Beijing 100088, China
| | - Dongdong Feng
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Jianmin Gao
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Yu Zhang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Yijun Zhao
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Qian Du
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Guozhang Chang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Qingjie Guo
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Xin Wang
- Nanjing Huadun Electric Power Information Security Assessment Co., Ltd., Nanjing 211100, China
| | - Shaozeng Sun
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
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Yan Z, Wu X, Zhao M, Zhang J. Lactic acid accumulation under heat stress related to accelerated glycolysis and mitochondrial dysfunction inhibits the mycelial growth of Pleurotus ostreatus. Appl Microbiol Biotechnol 2020; 104:6767-6777. [PMID: 32533305 DOI: 10.1007/s00253-020-10718-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 05/19/2020] [Accepted: 06/01/2020] [Indexed: 01/28/2023]
Abstract
High temperature is a major threat to Pleurotus ostreatus cultivation. In this study, a potential mechanism by which P. ostreatus mycelia growth is inhibited under heat stress was explored. Lactate, as a microbial fermentation product, was found unexpectedly in the mycelia of P. ostreatus under heat stress, and the time-dependent accumulation and corresponding inhibitory effect of lactate on mycelial growth was further confirmed. The addition of a glycolysis inhibitor, 2-deoxy-D-glucose (2DG), reduced the lactate content in mycelia and slightly restored mycelial growth under high-temperature conditions, which indicated the accumulation of lactate can be inhibited by glycolysis inhibition. Further data revealed mitochondrial dysfunction under high-temperature conditions, with evidence of decreased oxygen consumption and adenosine triphosphate (ATP) synthesis and increased reactive oxygen species (ROS). The removal of ROS with ascorbic acid decreased the lactate content, and mycelial growth recovered to a certain extent, indicating lactate accumulation could be affected by the mitochondrial ROS. Moreover, metabolic data showed that glycolysis and the tricarboxylic acid cycle were enhanced. This study reported the accumulation of lactate in P. ostreatus mycelia under heat stress and the inhibitory effect of lactate on the growth of mycelia, which might provide further insights into the stress response mechanism of edible fungi. Key Points • Lactate can accumulate in Pleurotus ostreatus mycelia under heat stress and inhibit its growth. • The accumulation of lactate may be due to the acceleration of glycolysis and the dysfunction of mitochondria of P. ostreatus mycelia under high-temperature stress. • The glycolysis and tricarboxylic acid cycle of P. ostreatus mycelia were accelerated under high-temperature stress.
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Affiliation(s)
- Zhiyu Yan
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.,Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Xiangli Wu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.,Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Mengran Zhao
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.,Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Jinxia Zhang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China. .,Key Laboratory of Microbial Resources, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China.
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14
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Qi M, Guo AQ, Qiao DH. A High-Temperature, Low-Noise Readout ASIC for MEMS-Based Accelerometers. Sensors (Basel) 2019; 20:E241. [PMID: 31906194 DOI: 10.3390/s20010241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/23/2019] [Accepted: 12/27/2019] [Indexed: 01/22/2023]
Abstract
This paper presents the development and measurement results of a complementary metal oxide semiconductor (CMOS) readout application-specific integrated circuit (ASIC) for bulk-silicon microelectromechanical system (MEMS) accelerometers. The proposed ASIC converts the capacitance difference of the MEMS sensor into an analog voltage signal and outputs the analog signal with a buffer. The ASIC includes a switched-capacitor analog front-end (AFE) circuit, a low-noise voltage reference generator, and a multi-phase clock generator. The correlated double sampling technique was used in the AFE circuits to minimize the low-frequency noise of the ASIC. A programmable capacitor array was implemented to compensate for the capacitance offset of the MEMS sensor. The ASIC was developed with a 0.18 μm CMOS process. The test results show that the output noise floor of the low-noise amplifier was −150 dBV/√Hz at 100 Hz and 175 °C, and the sensitivity of the AFE was 750 mV/pF at 175 °C. The output noise floor of the voltage reference at 175 °C was −133 dBV/√Hz at 10 Hz and −152 dBV/√Hz at 100 Hz.
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15
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Hu B, Hui W. Lead recovery from waste CRT funnel glass by high-temperature melting process. J Hazard Mater 2018; 343:220-226. [PMID: 28961502 DOI: 10.1016/j.jhazmat.2017.09.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/15/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
In this research, a novel and effective process for waste CRT funnel glass treatment was developed. The key to this process is removal of lead from the CRT funnel glass by high-temperature melting process. Sodium carbonate powder was used as a fusion agent, sodium sulfide serves as a catalytic agent and carbon powder acts as reducing agent. Experimental results showed that lead recovery rate increased with an increase in the amount of added sodium carbonate, sodium sulfide, carbonate, temperature and holding time initially, and then reached a stable value. The maximum lead recovery rate was approximately 94%, when the optimum adding amount of sodium carbonate, sodium sulfide, carbonate, temperature and holding time were 25%, 8%, 3.6%, 1200°C and 120min, respectively. In the high-temperature melting process, lead silicate in the funnel glass was firstly reduced, and then removed. The glass slag can be made into sodium and potassium silicate by hydrolysis process. This study proposed a practical and economical process for recovery of lead and utilization of waste glass slag.
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Affiliation(s)
- Biao Hu
- School of Management, Tianjin University of Technology, Tianjin, China; School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, China
| | - Wenlong Hui
- School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, China.
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Sesti EL, Cui J, Hayes SE, Conradi MS. A flow-through, elevated-temperature and -pressure NMR apparatus for in-situ CO 2 sequestration studies. J Magn Reson 2017; 282:136-141. [PMID: 28822304 DOI: 10.1016/j.jmr.2017.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 06/07/2023]
Abstract
We report an apparatus for in-situ nuclear magnetic resonance (NMR) studies of chemical reactions of dissolved 13CO2 with minerals (rock or powder) under continuous flow. The operating range of the apparatus is 18-150°C and 1-140bar. A flow pump is used to circulate a CO2-water solution, with a heated mixing vessel where CO2 gas equilibrates with a water solution. The NMR probe is built around a strong zirconia ceramic vessel, with o-ring sealed connections; the mineral is contained inside. The horizontal orientation of the zirconia vessels allows use of a radio frequency (rf) solenoid for improved spin sensitivity.
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Affiliation(s)
- Erika L Sesti
- Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, United States.
| | - Jinlei Cui
- Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, United States.
| | - Sophia E Hayes
- Department of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, United States.
| | - Mark S Conradi
- Department of Physics, Washington University in St. Louis, St. Louis, MO 63130, United States; ABQMR, 2301 Yale Blvd SE, Suite C2, Albuquerque, NM 87106, United States.
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Jiang Y, Ju M, Li W, Ren Q, Liu L, Chen Y, Yang Q, Hou Q, Liu Y. Rapid production of organic fertilizer by dynamic high-temperature aerobic fermentation (DHAF) of food waste. Bioresour Technol 2015; 197:7-14. [PMID: 26313630 DOI: 10.1016/j.biortech.2015.08.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/09/2015] [Accepted: 08/11/2015] [Indexed: 06/04/2023]
Abstract
Keep composting matrix in continuous collision and friction under a relatively high-temperature can significantly accelerate the progress of composting. A bioreactor was designed according to the novel process. Using this technology, organic fertilizer could be produced within 96h. The electric conductivity (EC) and pH value reached to a stable value of 2.35mS/cm and 7.7 after 96h of fermentation. The total carbon/total nitrogen (TC/TN) and dissolved carbon/dissolved nitrogen (DC/DN) ratio was decrease from 27.3 and 36.2 to 17.4 and 7.6 respectively. In contrast, it needed 24days to achieve the similar result in traditional static composting (TSC). Compost particles with different size were analyzed to explore the rapid degradation mechanism of food waste. The evidence of anaerobic fermentation was firstly discovered in aerobic composting.
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Affiliation(s)
- Yang Jiang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Meiting Ju
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China.
| | - Weizun Li
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Qingbin Ren
- Tianjin Baili Sun Environmental Protection Equipment Co., Ltd, Tianjin 300071, PR China
| | - Le Liu
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Yu Chen
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Qian Yang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Qidong Hou
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Yiliang Liu
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
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Nakamura M, Nozu R, Ijiri S, Kobayashi T, Hirai T, Yamaguchi Y, Seale A, Lerner DT, Grau GE. Sexual characteristics of high-temperature sterilized male Mozambique tilapia, Oreochromis mossambicus. Zoological Lett 2015; 1:21. [PMID: 26605066 PMCID: PMC4657368 DOI: 10.1186/s40851-015-0021-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 06/17/2015] [Indexed: 06/05/2023]
Abstract
INTRODUCTION In order to clarify the effect of extremely high temperature on gonads of fish, juveniles of the Mozambique tilapia, Oreochromis mossambicus, at three days after hatching (d.a.h.) were reared at a high temperature (37 ± 0.5 °C) for 50 days. The heat-treated fish were then cultivated at a normal water temperature for over six months. RESULTS The testes of all individuals heat-treated for 50 days were sterile. Histological analysis revealed the complete absence of all stages of spermatogenic germ cells in the testes of the heat-treated males; however, structures within a layer of epithelial cells lining the efferent ducts were observed to actively secrete sperm fluid into the ducts, as in the mature testes of normal males. Clusters of cells immunopositive against P450scc and 3β-hydroxysteroid dehydrogenase were observed in the sterilized testes. Leydig cells had developed smooth endoplasmic reticulum and several mitochondria with tubular cristae indicating active steroidogenesis. The sterilized males displayed male nuptial coloration, actively dug spawning nests, and mated with normal mature females. However, females mated with these males initially brooded their eggs normally but released them prematurely at 4-5 days. All the released eggs were unfertilized and dead. CONCLUSION Heat-sterilized male tilapia matures endocrinologically but completely lacks spermatogenic germ cells.
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Affiliation(s)
- Masaru Nakamura
- />Okinawa Churashima Foundation, 888 Ishikawa, Motobu, Okinawa 905-0206 Japan
- />University of the Ryukyus, Sesoko station, 3422 Sesoko, Motobu, Okinawa 905-0227 Japan
| | - Ryo Nozu
- />Okinawa Churashima Foundation, 888 Ishikawa, Motobu, Okinawa 905-0206 Japan
| | - Shigeho Ijiri
- />Hokkido University, Faculty of Fisheries, Graduate School of Fisheries Sciences, Laboratory of Aquaculture Biology, Minato-cho 3-1-1, Hakodate, Hokkaido 014-8611 Japan
| | - Tohru Kobayashi
- />University of Shizuoka, Laboratory of Molecular Reproductive Biology, Institute for Environmental Sciences, 52-1 Yada, Suruga-ku, Shizuoka 422-8526 Japan
| | - Toshiaki Hirai
- />Department Life and Health Science/Biotechnology Research, Teikyo University Science &Technology, Center2525 Yatsusawa, Uenohara, Yamanashi 409-0193 Japan
| | - Yoko Yamaguchi
- />University of Hawaii, Hawaii Institute of Marin Biology, 46-007 Lilipuna Rd, Kaneohe, HI 96744 USA
| | - Andre Seale
- />University of Hawaii, Hawaii Institute of Marin Biology, 46-007 Lilipuna Rd, Kaneohe, HI 96744 USA
| | - Darren T. Lerner
- />University of Hawaii, Hawaii Institute of Marin Biology, 46-007 Lilipuna Rd, Kaneohe, HI 96744 USA
| | - Gordon E. Grau
- />University of Hawaii, Hawaii Institute of Marin Biology, 46-007 Lilipuna Rd, Kaneohe, HI 96744 USA
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Zhang X, Shen D, Feng H, Wang Y, Li N, Han J, Long Y. Cooperative role of electrical stimulation on microbial metabolism and selection of thermophilic communities for p-fluoronitrobenzene treatment. Bioresour Technol 2015; 189:23-29. [PMID: 25864027 DOI: 10.1016/j.biortech.2015.03.147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 03/29/2015] [Accepted: 03/30/2015] [Indexed: 06/04/2023]
Abstract
A novel thermophilic bioelectrochemical system (TBES) based on electrical stimulation was established for the enhanced treatment of p-fluoronitrobenzene (p-FNB) wastewater. p-FNB removal rate constant in the TBES was 78.6% higher than that of the mesophilic BES (MBES), the elevation of which owing to high-temperature overtook the rate improvement of 50.8% in the electrocatalytic system (ECS). Additionally, an overwhelming mineralization efficiency of 91.96% ± 5.70% was obtained in the TBES. The superiority of TBES was attributed to the integrated role of electrical stimulation and high-temperature. Electrical stimulation provided an alternative for the microbial growth independent energy requirements, compensating insufficient energy support from p-FNB metabolism under the high-temperature stress. Besides, electrical stimulation facilitated microbial community evolution to form specific thermophilic biocatalysis. The uniquely selected thermophilic microorganisms including Coprothermobacter sp. and other ones cooperated to enhance p-FNB mineralization.
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Affiliation(s)
- Xueqin Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Dongsheng Shen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
| | - Huajun Feng
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
| | - Yanfeng Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Na Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China
| | - Jingyi Han
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yuyang Long
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
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