1
|
Shen R, Hussain K, Liu N, Li J, Yu J, Zhao J, Li W, Yang S. Ecotoxicity of Cadmium along the Soil-Cotton Plant-Cotton Bollworm System: Biotransfer, Trophic Accumulation, Plant Growth, Induction of Insect Detoxification Enzymes, and Immunocompetence. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:14326-14336. [PMID: 38870410 PMCID: PMC11212622 DOI: 10.1021/acs.jafc.4c01456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 05/22/2024] [Accepted: 05/29/2024] [Indexed: 06/15/2024]
Abstract
Cadmium (Cd) is a hazardous element that may jeopardize environmental safety and human health through biotransfer and trophic accumulation. Here, we tested Cd toxicity on cotton plants, cotton bollworms, and their responses. Results demonstrated that Cd accumulated in plant roots, aerial parts, insect larvae, pupae, and frass in a dose-dependent pattern. The ∼9.35 mg kg-1 of Cd in plant aerial parts, ∼3.68 in larvae, ∼6.43 in pupae, and high transfer coefficient (∼5.59) indicate significant mobility. The ∼19.61 mg kg-1 of Cd in larvae frass suggests an effective detoxification strategy, while BAFcotton (∼1.14) and BAFworm (∼0.54) indicated low bioaccumulation. Cadmium exposure resulted in compromised plant growth and yield as well as alterations in photosynthetic pigment contents, antioxidant enzyme activities, and certain life history traits of cotton bollworms. Furthermore, carboxylesterase activity and encapsulation rates of insect larvae decreased with increasing Cd concentrations, whereas acetylcholinesterase, phenol oxidase, glutathione S-transferase, and multifunctional oxidase exhibited hormesis responses.
Collapse
Affiliation(s)
- Ruoyao Shen
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Khateeb Hussain
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Ning Liu
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Jie Li
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Jiaming Yu
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Juan Zhao
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Wenwen Li
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
| | - Shiyong Yang
- School
of Ecology and Environment, Anhui Normal
University, Wuhu 241002, China
- Collaborative
Innovation Center for Recovery and Reconstruction of Degraded Ecosystem
in Wanjing Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241002, China
| |
Collapse
|
2
|
Hao X, Zhu P, Liu X, Jiang L, Jiang H, Liu H, Chen Z. Bioreactor Expansion Affects Microbial Succession of Mixotrophic Acidophiles and Bioremediation of Cadmium-Contaminated Soils. TOXICS 2024; 12:362. [PMID: 38787141 PMCID: PMC11125581 DOI: 10.3390/toxics12050362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/01/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024]
Abstract
Microbial scale-up cultivation is the first step to bioremediating cadmium (Cd)-contaminated soils at the industrial scale. However, the changes in the microbial community as the bioreactor volume expands and their associations with soil Cd removal remain unclear. Herein, a six-stage scale-up cultivation process of mixotrophic acidophiles was conducted, scaling from 0.1 L to 10 m3, to remediate Cd-contaminated soils. The findings showed that bioreactor expansion led to a delay in sulfur and glucose oxidations, resulting in a reduced decline in solution pH and cell density. There were minimal differences observed in bacterial alpha-diversity and community structure as the bioreactor volume increased, except for the 10 m3 scale. However, bioreactor expansion decreased fungal alpha-diversity, changed the community structure, and simplified fungal community compositions. At the family level, Acidithiobacillaceae and Debaryomycetaceae dominated the bacterial and fungal communities throughout the scale-up process, respectively. Correlation analysis indicated that the indirect effect of mixotrophic acidophiles played a significant role in soil Cd removal. Bacterial community shifts, driven by changes in bioreactor volume, decreased the pH value through sulfur oxidation, thereby indirectly enhancing Cd removal efficiency. This study will contribute to the potential industrial application of mixotrophic acidophiles in bioremediating Cd-contaminated soils.
Collapse
Affiliation(s)
- Xiaodong Hao
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi 276000, China
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Ping Zhu
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi 276000, China
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Luhua Jiang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Huidan Jiang
- Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Hongwei Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Zhiqun Chen
- College of Life Science, Linyi University, Linyi 276000, China
| |
Collapse
|
3
|
Sarkodie EK, Jiang L, Li K, Guo Z, Yang J, Shi J, Peng Y, Wu X, Huang S, Deng Y, Jiang H, Liu H, Liu X. The influence of cysteine in transformation of Cd fractionation and microbial community structure and functional profile in contaminated paddy soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167535. [PMID: 37802356 DOI: 10.1016/j.scitotenv.2023.167535] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/19/2023] [Accepted: 09/30/2023] [Indexed: 10/10/2023]
Abstract
Remediating cadmium (Cd) contaminated paddy soil is vital for agroecology, food safety, and human health. Soil washing is more feasible to reduce remediation method due to its high efficiency. However, green, low-cost and more efficient washing agents are still required. In this study, we investigated the ability of cysteine as a washing agent for soil washing to remove Cd from contaminated paddy soil. Through a batch experiment, we evaluated the removal efficiency of cysteine as a washing agent by comparing their removal rate with that of a microbial inoculant and sulphuric acid as other washing agents. The transformation of Cd fractionation and microbial community structure and functional profile in paddy soils after cysteine leaching was studied by using sequential extraction and high-throughput sequencing. Results showed that cysteine had better efficiency in the removal of Cd from paddy soil in comparison to sulphuric acid and the microbial inoculant, and could achieve a maximum removal rate of 97 % Cd in paddy soil. Cysteine decreased the proportion of Cd in the exchangeable fraction, carbonate bound fraction, iron and manganese bound fraction, and organic matter bound fraction and was best for the removal of the residual fraction, which contributed to its higher Cd removal ability. Considering the economic benefits of the reagents used, cysteine was shown to be economically feasible for use as a leaching agent. In addition, cysteine could significantly increase the relative abundance of Thermochromatium, Sideroxydans, Streptacidiphilus, and Frankia which promoted the nitrogen and sulfur metabolism in the paddy soil. In summary, this study revealed that cysteine was readily available, cheap, non-toxic, highly efficient, and even has fertilizing properties, making it eco-friendly and ideal for remediation of Cd-contaminated paddy soils. Besides, the health of paddy soils would also benefit from cysteine's promotion of microbial nitrogen and sulfur metabolism.
Collapse
Affiliation(s)
- Emmanuel Konadu Sarkodie
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Luhua Jiang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China.
| | - Kewei Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Ziwen Guo
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Jiejie Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Jiaxin Shi
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Yulong Peng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Xinhong Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Shanshan Huang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Yan Deng
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Huidan Jiang
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Hongwei Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| |
Collapse
|
4
|
Honorio R, Depierrefixe P, Devers S, Rouelle M, Meunier J, Lécureuil C. Effects of cadmium ingestion on reproduction and maternal egg care in the European earwig. Anim Behav 2023. [DOI: 10.1016/j.anbehav.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
5
|
Fang Z, Li Y, Wang J, Wang X, Huang L, Sun L, Deng Q. Alleviative Effect of Threonine on Cadmium-Induced Liver Injury in Mice. Biol Trace Elem Res 2022:10.1007/s12011-022-03506-x. [PMID: 36454454 DOI: 10.1007/s12011-022-03506-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/22/2022] [Indexed: 12/03/2022]
Abstract
As a toxic trace element commonly found in food, cadmium (Cd) can cause severe liver injury. Our previous study showed that threonine (Thr) could significantly alleviate Cd toxicity in yeast. To investigate the effect of Thr on Cd-induced liver injury in mice, twenty-four mice were randomly divided into four groups: control, Cd, and low/high dose of Thr-treatment groups (0.04 and 0.08 mmol/kg/day, respectively). After 7 days of continuous treatment, the alleviative effect of Thr on liver injury in Cd-exposed mice was assessed. The results showed that Thr significantly reduced the elevation of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in Cd-exposed mice. Histological analysis showed that Thr decreased Cd-induced hepatic steatosis, zonal necrosis, and inflammatory cell infiltration. Thr also reduced the Cd-induced malondialdehyde (MDA) and O2- levels and restored superoxide dismutase (SOD) and catalase (CAT) activities in the liver. Further investigation showed that Thr significantly suppressed Cd-induced inflammatory response (tumor necrosis factor-α and interleukin-6) and restored the level of anti-apoptotic protein (Blc-2) but inhibited the elevation of pro-apoptotic proteins (Bax and caspase-3), as well as the activation of the PI3K/AKT signaling pathway in Cd-exposed mice. In conclusion, Thr alleviated Cd-induced liver injury through reducing Cd-induced oxidative stress, inflammation, and attenuating hepatocyte apoptosis via PI3K/AKT-related signaling pathway.
Collapse
Affiliation(s)
- Zhijia Fang
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China
| | - Yongbin Li
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China
| | - Jingwen Wang
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China.
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China.
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China.
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China.
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China.
| | - Xinran Wang
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China
| | - Linru Huang
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China
| | - Lijun Sun
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China
| | - Qi Deng
- College of Food Science and Technology, Guangdong Ocean University, 1 Haida Road, Mazhang District, Zhanjiang, 524088, Guangdong Province, China
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Zhanjiang, China
- Guangdong Province Engineering Laboratory for Marine Biological Products, Zhanjiang, China
- Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang, China
- Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang, 524088, China
| |
Collapse
|
6
|
Kushwaha A, Hans N, Giri BS, Rene ER, Rani R. Uncovering the phytochemicals of root exudates and extracts of lead (Pb) tolerant Chrysopogon zizanioides (L.) Roberty in response to lead contamination and their effect on the chemotactic behavior of rhizospheric bacteria. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:44998-45012. [PMID: 35146608 DOI: 10.1007/s11356-022-18887-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
The chemical composition of root exudates and root extracts from Chrysopogon zizanioides (L.) Roberty cv KS-1 was determined in the presence of lead [Pb(II)]. Hitherto, no information is available in the literature concerning the phytochemical components of root exudates of C. zizanioides. Significantly higher concentrations of total carbohydrates (26.75 and 42.62% in root exudates and root extract, respectively), reducing sugars (21.46 and 56.11% in root exudates and root extract, respectively), total proteins (9.22 and 23.70% in root exudates and root extract, respectively), total phenolic acids (14.69 and 8.33% in root exudates and root extract, respectively), total flavonoids (14.30 and 12.28% in root exudates and root extract, respectively), and total alkaloids (12.48 and 7.96% in root exudates and root extract, respectively) were observed in samples from plants growing under Pb(II) stress in comparison to the respective controls. GC-MS profiling showed the presence of a diverse group of compounds in root exudates and extracts, including terpenes, alkaloids, flavonoids, carotenoids, plant hormones, carboxylic/organic acids, and fatty acids. Among the detected compounds, many have an important role in plant development, regulating rhizosphere microbiota and allelopathy. Furthermore, the results indicated that C. zizanioides exudates possess a chemotactic response for rhizospheric bacterial strains Bacillus licheniformis, Bacillus subtilis, and Acinetobacter junii Pb1.
Collapse
Affiliation(s)
- Anamika Kushwaha
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, Prayagraj-211004, Teliyarganj, India
| | - Nidhi Hans
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, Prayagraj-211004, Teliyarganj, India
| | - Balendu Shekher Giri
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Eldon R Rene
- Department of Environmental Engineering and Water Technology, IHE Delft Institute for Water Education, 2611AX, Delft, the Netherlands
| | - Radha Rani
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Uttar Pradesh, Prayagraj-211004, Teliyarganj, India.
| |
Collapse
|
7
|
Zhang H, Zhao Y, Wang Z, Liu Y. Distribution characteristics, bioaccumulation and trophic transfer of heavy metals in the food web of grassland ecosystems. CHEMOSPHERE 2021; 278:130407. [PMID: 33823346 DOI: 10.1016/j.chemosphere.2021.130407] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/22/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
In this study, according to the classification of biological "classes" and the different trophic levels of the food web, the distribution characteristics, bioaccumulation of heavy metals (HMs) and their trophic transfer in the food web of typical grassland ecosystems were studied and predicted. The results indicated that the accumulation of toxic As was the highest in small mammals and reptiles, Cu was the highest in insects, and the micronutrient Zn in large mammals was higher than that in plants. The metal transfer factor (MTF) by plants at the first trophic level showed that Leymus chinensis had the best ability to absorb HMs from soil. The trophic transfer factor (TTF) of HMs in the second-trophic level insects, birds and some mammals were Zn > As > Cu > Ni > Pb > Co = Cr > Mn > V, in which, biomagnified on Zn, As, and Cu. Organisms at the third trophic level including birds, reptiles and some mammals had the strongest accumulation ability for Pb, V and As, and all were biomagnified. The biomagnification on As and Co of the fourth trophic level Siberian weasel was obviously higher than that of Dione's rat-snake, which had significant biomagnification effect on As by preying on Steppe toad-headed agama. The study showed that the bioaccumulation levels of HMs in organisms at different trophic levels varied significantly with species, prey, and organ type, but they all showed strong bioaccumulation capacity to toxic As, which indicated that As could produce certain toxic effects on animals in the food web through trophic transfer. In addition, organisms at low-trophic levels were more likely to biomagnify Zn, while organisms at high-trophic levels were more likely to biodilute Pb.
Collapse
Affiliation(s)
- Huilan Zhang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Yueru Zhao
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Ziwei Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China
| | - Ying Liu
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Beijing Engineering Research Center of Food Environment and Public Health, Minzu University of China, Beijing, 100081, China.
| |
Collapse
|
8
|
Hans N, Malik A, Naik S. Antiviral activity of sulfated polysaccharides from marine algae and its application in combating COVID-19: Mini review. ACTA ACUST UNITED AC 2020; 13:100623. [PMID: 33521606 PMCID: PMC7836841 DOI: 10.1016/j.biteb.2020.100623] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 12/22/2022]
Abstract
Marine-derived sulfated polysaccharides possess various antiviral activities against a broad range of enveloped and non-enveloped viruses. It has become the potential source of antiviral drugs for pharmaceutical development. In this review, we will discuss the different types of sulfated polysaccharides and their structural classification. Some of the major sulfated polysaccharides with potent antiviral activity, including carrageenan, agar, ulvan, fucoidan, and alginates, are considered in this review. The mechanism of these sulfated polysaccharides in inhibiting the different stages of the viral infection process inside the host cell is also demonstrated. It involves blocking the initial entry of the virus or inhibiting its transcription and translation by modulating the immune response of the host cell. In addition, we explore the potential of sulfated polysaccharides as antiviral agents in preventing recent Corona Virus Disease-2019 (COVID-19).
Collapse
Affiliation(s)
- Nidhi Hans
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Anushree Malik
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Satyanarayan Naik
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| |
Collapse
|
9
|
Cyanobacterial Extracellular Polymeric Substances for Heavy Metal Removal: A Mini Review. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs5010001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Heavy metals from various natural and anthropogenic sources are becoming a chief threat to the aquatic system owing to their toxic and lethal effect. The treatment of such contaminated wastewater is one of the prime concerns in this field. For decades, a huge array of innovative biosorbents is used for heavy metal removal. Though extensive microbes and their biomolecules have been experimented and have showed great potential but most of them have failed to have the substantial breakthrough for the practical application. The present review emphasis on the potential utilization of the cyanobacteria for the heavy metal removal along with the toxic effect imposed by the pollutant. Furthermore, the effect of significant parameters, plausible mechanistic insights of the heavy metal toxicity imposed onto the cyanobacteria is also discussed in detail. The role of extrapolymeric substances and metallothionein secreted by the microbes are also elaborated. The review was evident that the cyanobacterial species have a huge potential towards the heavy metal removal from the aqueous system ranging from very low to very high concentrations.
Collapse
|
10
|
Khan A, Bilal S, Khan AL, Imran M, Al-Harrasi A, Al-Rawahi A, Lee IJ. Silicon-mediated alleviation of combined salinity and cadmium stress in date palm (Phoenix dactylifera L.) by regulating physio-hormonal alteration. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109885. [PMID: 31704322 DOI: 10.1016/j.ecoenv.2019.109885] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/23/2019] [Accepted: 10/26/2019] [Indexed: 06/10/2023]
Abstract
We investigated the physio-molecular effects of separate and combined cadmium (Cd; 200 μM) and salinity (NaCl; 100 mM) stress on date palm during silicon (Si; 1.0 mM) applications. The results showed that exogenous Si led to significant improvements in plant growth, as well as physiology when compared with non-Si-treated seedling under stressed (Cd/NaCl) conditions. Interestingly, Si application led to lower metal (Cd) uptake and enhanced plant macronutrient uptake under combined stress, in turn, alleviating the combined salinity- and Cd-induced oxidative stress by lowering the lipid peroxidation rate, and peroxidase and catalase activities. Furthermore, ascorbate peroxidase level and the cytosolic Cu/Zn superoxide dismutase expression were significantly enhanced by Si application under combined stress. We further analyzed the effect of Si on modulation of stress-related hormonal crosstalk. Si markedly downregulated endogenous salicylic acid, jasmonic acid, and abscisic acid under NaCl stress and combined NaCl-Cd stress. However, during Cd toxicity alone, Si showed varying accumulation of these phytohormones. The results suggest that hindering the Cd uptake and enhancing silicon accumulation ultimately led to improvement of biomass and efficiency of the antioxidant system for alleviating combined stress. Moreover, higher transcript accumulation of PROLINE TRANSPORTER 2 and GAPDH and downregulation of ABA RECEPTOR by Si treatment under combined stress in date palm seedlings indicate the stress-ameliorative role of Si. The study provides evidence of the positive influence of Si on alleviating the combined toxicity of Cd and NaCl in date palm and can be further extended for field trials in Cd- and salinity-affected areas.
Collapse
Affiliation(s)
- Adil Khan
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Saqib Bilal
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Abdul Latif Khan
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman.
| | - Muhammad Imran
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman.
| | - Ahmed Al-Rawahi
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea.
| |
Collapse
|