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Wang Y, Wang Y, Liu M, Jia R, Zhang Y, Sun G, Zhang Z, Liu M, Jiang Y. Micro-/nano-plastics as vectors of heavy metals and stress response of ciliates using transcriptomic and metabolomic analyses. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124667. [PMID: 39103036 DOI: 10.1016/j.envpol.2024.124667] [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: 04/08/2024] [Revised: 08/01/2024] [Accepted: 08/02/2024] [Indexed: 08/07/2024]
Abstract
The escalating presence of microplastics and heavy metals in marine environments significantly jeopardizes ecological stability and human health. Despite this, research on the combined effects of microplastics/nanoplastics (MPs/NPs) and heavy metals on marine organisms remains limited. This study evaluated the impact of two sizes of polystyrene beads (approximately 2 μm and 200 nm) combined with cadmium (Cd) on the ciliate species Euplotes vannus. Results demonstrated that co-exposure of MPs/NPs and Cd markedly elevated reactive oxygen species (ROS) levels in ciliates while impairing antioxidant enzyme activities, thus enhancing oxidative damage and significantly reducing carbon biomass in ciliates. Transcriptomic profiling indicated that co-exposure of MPs/NPs and Cd potentially caused severe DNA damage and protein oxidation, as evidenced by numerous differentially expressed genes (DEGs) associated with mismatch repair, DNA replication, and proteasome function. Integrated transcriptomic and metabolomic analysis revealed that DEGs and differentially accumulated metabolites (DAMs) were significantly enriched in the TCA cycle, glycolysis, tryptophan metabolism, and glutathione metabolism. This suggests that co-exposure of MPs/NPs and Cd may reduce ciliate abundance and carbon biomass by inhibiting energy metabolism and antioxidant pathways. Additionally, compared to MPs, the co-exposure of NPs and Cd exhibited more severe negative effects due to the larger specific surface area of NPs, which can carry more Cd. These findings provide novel insights into the toxic effects of MPs/NPs and heavy metals on protozoan ciliates, offering foundational data for assessing the ecological risks of heavy metals exacerbated by MPs/NPs.
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Affiliation(s)
- Yunlong Wang
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Yaxin Wang
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Minhao Liu
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Ruiqi Jia
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Yan Zhang
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Gaojingwen Sun
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Zhaoji Zhang
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Mingjian Liu
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Yong Jiang
- College of Marine Life Sciences & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China; Key Laboratory of Evolution & Marine Biodiversity of Ministry of Education, Ocean University of China, Qingdao, 266003, China.
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Chen D, Wang Y, Li N, Huang Y, Mao Y, Liu X, Du Y, Sun K. Transcriptomic and physiological analyses of Trichoderma citrinoviride HT-1 assisted phytoremediation of Cd contaminated water by Phragmites australis. BMC Microbiol 2024; 24:93. [PMID: 38515035 PMCID: PMC10956257 DOI: 10.1186/s12866-024-03252-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024] Open
Abstract
Plant growth promoting microbe assisted phytoremediation is considered a more effective approach to rehabilitation than the single use of plants, but underlying mechanism is still unclear. In this study, we combined transcriptomic and physiological methods to explore the mechanism of plant growth promoting microbe Trichoderma citrinoviride HT-1 assisted phytoremediation of Cd contaminated water by Phragmites australis. The results show that the strain HT-1 significantly promoted P. australis growth, increased the photosynthetic rate, enhanced antioxidant enzyme activities. The chlorophyll content and the activity of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) were increased by 83.78%, 23.17%, 47.60%, 97.14% and 12.23% on average, and decreased the content of malondialdehyde (MDA) by 31.10%. At the same time, strain HT-1 improved the absorption and transport of Cd in P. australis, and the removal rate of Cd was increased by 7.56% on average. Transcriptome analysis showed that strain HT-1 induced significant up-regulated the expression of genes related to oxidative phosphorylation and ribosome pathways, and these upregulated genes promoted P. australis remediation efficiency and resistance to Cd stress. Our results provide a mechanistic understanding of plant growth promoting microbe assisted phytoremediation under Cd stress.
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Affiliation(s)
- DaWei Chen
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - YiHan Wang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - Ni Li
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - YaLi Huang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - YiFan Mao
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - XiaoJun Liu
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - YaRong Du
- Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources, Lanzhou, 730046, China
| | - Kun Sun
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, Gansu, China.
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Wang F, Li P, Liu Q, Nie G, Zhu Y, Zhang X. Selection and Validation of Reference Genes in Sudan Grass ( Sorghum sudanense (Piper) Stapf) under Various Abiotic Stresses by qRT-PCR. Genes (Basel) 2024; 15:210. [PMID: 38397200 PMCID: PMC10887928 DOI: 10.3390/genes15020210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/28/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
Quantitative reverse transcription PCR (qRT-PCR) can screen applicable reference genes of species, and reference genes can be used to reduce experimental errors. Sudan grass (Sorghum sudanense (Piper) Stapf) is a high-yield, abiotic-tolerant annual high-quality forage with a wide range of uses. However, no studies have reported reference genes suitable for Sudan grass. Therefore, we found eight candidate reference genes, including UBQ10, HIS3, UBQ9, Isoform0012931, PP2A, ACP2, eIF4α, and Actin, under salt stress (NaCl), drought stress (DR), acid aluminum stress (AlCl3), and methyl jasmonate treatment (MeJA). By using geNorm, NormFinder, BestKeeper, and RefFinder, we ranked eight reference genes on the basis of their expression stabilities. The results indicated that the best reference gene was PP2A under all treatments. eIF4α can be used in CK, MeJA, NaCl, and DR. HIS3 can serve as the best reference gene in AlCl3. Two target genes (Isoform0007606 and Isoform0002387) belong to drought-stress-response genes, and they are highly expressed in Sudan grass according to transcriptome data. They were used to verify eight candidate reference genes under drought stress. The expression trends of the two most stable reference genes were similar, but the trend in expression for Actin showed a significant difference. The reference genes we screened provided valuable guidance for future research on Sudan grass.
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Affiliation(s)
- Fangyan Wang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.W.); (P.L.); (G.N.)
| | - Peng Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.W.); (P.L.); (G.N.)
| | - Qiuxu Liu
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China;
| | - Gang Nie
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.W.); (P.L.); (G.N.)
| | - Yongqun Zhu
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China;
| | - Xinquan Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (F.W.); (P.L.); (G.N.)
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Meng L, Yang Y, Ma Z, Jiang J, Zhang X, Chen Z, Cui G, Yin X. Integrated physiological, transcriptomic and metabolomic analysis of the response of Trifolium pratense L. to Pb toxicity. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129128. [PMID: 35594664 DOI: 10.1016/j.jhazmat.2022.129128] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/24/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Lead (Pb) interferes with plant gene expression, alters metabolite contents and affects plant growth. However, the molecular mechanism underlying the plant response to Pb is not completely understood. In the present study, Trifolium pratense L. was exposed to Pb concentrations of 0 (Pb0), 500 (Pb500), 1000 (Pb1000), 2000 (Pb2000) and 3000 (Pb3000) mg/kg in soils. Pb stress affected the ability of T. pratense to accumulate and transport Pb, increased the activity of peroxidase (POD) and the contents of malondialdehyde (MDA) and proline, decreased the amount of photosynthetic pigments and soluble proteins, and led to changes in growth and biomass. Transcriptomic and metabolomic analyses showed that Pb mainly affected eight pathways, and LHC, flavonoids, organic acids, amino acids and carbohydrates were upregulated or downregulated. Moreover, Pb500 induced the upregulation of serA, promoted the synthesis of citric acid, maintained photosynthetic pigment levels, and ultimately promoted an increase in stem length. Pb3000 induced the upregulation of ARF, GH3 and SAUR genes, but the saccharide contents and stem length decreased in response to Pb stress. We used a variety of methods to provide a molecular perspective on the mechanism underlying the response of T. pratense to Pb stress.
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Affiliation(s)
- Lingdong Meng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yupeng Yang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Zewang Ma
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Jingwen Jiang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Xiaomeng Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Zirui Chen
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Guowen Cui
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Xiujie Yin
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China.
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Fan H, He Q, Dong Y, Xu W, Lou Y, Hua X, Xu T. Selection of suitable candidate genes for mRNA expression normalization in bulbil development of Pinellia ternata. Sci Rep 2022; 12:8849. [PMID: 35614175 PMCID: PMC9133075 DOI: 10.1038/s41598-022-12782-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/03/2022] [Indexed: 11/09/2022] Open
Abstract
Pinellia ternata (Thunb.) Breit. (Abbreviated as P. ternata). It is a commonly prescribed Chinese traditional medicinal herb for the treatment of phlegm, cough, and morning sick. Bulbil reproduction is one of the main reproductive methods of P. ternata. The accurate quantification of gene expression patterns associated with bulbil development might be helpful to explore the molecular mechanism involved in P. ternata reproduction. Quantitative real-time PCR was the most preferred method for expression profile and function analysis of mRNA. However, the reference genes in different tissues of P. ternata in different periods of bulbil development have not been studied in detail. In present study, the expression stability of eight candidate reference genes were determined with programs: geNorm, NormFinder, BestKeeper, and refFinder. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) was identified as the top- rated reference gene in all samples of P. ternata, while different combinations of reference gene proved to be the most stable depending on development stage and tissue type. Furthermore, the reliability of GAPDH expression was verified by six P. ternata related genes in hormone and nutrient biosynthesis pathways, and the expression profiles of these genes were agreed with the results of RNA-seq digital gene expression analysis. These results can contribute to studies of gene expression patterns and functional analysis of P. ternata involved in bulbil development.
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Affiliation(s)
- Haoyu Fan
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Qiuling He
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China.
| | - Yiheng Dong
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Wenxin Xu
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yanlin Lou
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xuejun Hua
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Tao Xu
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China.
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