Genetic Engineering Technology Research Articles

Is Chinese consumers' attitude toward genetically modified foods bouncing back?

PurposeThe purpose of this paper is to examine the dynamic of consumers' perceptions of GM food and explore whether their knowledge of GM technology is associated with a significant change.Design/methodology/approachThis paper presents a meta-analysis of 156 primary studies reporting a total of 225 attitudes toward genetically modified foods. To identify the impact of consumers' knowledge of GM technology, the authors estimate multivalued treatment effects model.FindingsThe results of this study show that consumers' attitudes show a U shape during 2001–2022. That is, the rise in opposition to genetically modified foods has been reversed. In addition, this study also shows that the increase in consumers' knowledge of genetically modified technology contributes to their changes in attitude.Originality/valueThis paper is the first study that empirically investigates the dynamics of Chinese consumers' attitude to genetically modified foods, and shows the rise in opposition to genetically modified foods has been reversed, which has important implication for commercialization of genetically modified crops in China.

Social acceptance of genetic engineering technology.

Genetic engineering of animals has been proposed to address societal problems, but public acceptance of the use of this technology is unclear. Previous work has shown that the source of information proposing the technology (e.g. companies, universities), the term used to describe the technology (e.g. genome editing, genetic modification), and the genetic engineering application (e.g. different food products) affects technology acceptance. We conducted three mixed-method surveys and used a causal trust-acceptability model to understand social acceptance of genetic engineering (GE) by investigating 1) the source of information proposing the technology, 2) the term used to describe the technology, and 3) the GE application for farm animals proposed. Further, participants expressed their understanding of technology using a range of terms interchangeably, all describing technology used to change an organism's DNA. We used structural equation modelling and confirmed model fit for each survey. In each survey, perceptions of benefit had the greatest effect on acceptance. Following our hypothesized model, social trust had an indirect influence on acceptance through similar effects of perceived benefit and perceived risk. Additional quantitative analysis showed that the source of information and technology term had little to no effect on acceptance. Applications involving animals were perceived as less beneficial than a plant application, and an application for increased cattle muscle growth was perceived as more risky than a plant application. When assessing the acceptability of applications participants considered impacts on plants, animals, and people, trust in actors and technologies, and weighed benefits and drawbacks of GE. Future work should consider how to best measure acceptability of GE for animals, consider contextual factors and consider the use of inductive frameworks.

Abstract IA012: Modelling childhood cancer using organoid technology

Abstract Cancer is still one of the leading causes of disease-related deaths in children. Survivors suffer from side effects of the, in most cases, intensive treatment regimens. Hence, there is an urgent need to develop improved, less toxic therapies. Our vision is that if we understand the processes that underpin the development of childhood cancer, we will facilitate improved cure rates and a better quality of life. However, therapeutic innovation is hampered by the lack of cell models representative of native tumor tissue. The organoid technology has revolutionized cancer research, as it allows for the ‘unlimited’ expansion of healthy and diseased tissue from individual patients in a dish, while retaining essential characteristics of native tissue. Organoids are therefore seen as avatars of the tissues they were derived from (Drost & Clevers, Nat Rev Cancer 2018). We recently succeeded in establishing culture protocols to grow organoids from a wide spectrum of pediatric malignancies such as Wilms tumors, renal cell carcinomas, as well as different rhabdoid tumor and soft tissue sarcoma subtypes. Subjecting our models to a comprehensive molecular profiling, we were able to demonstrate that pediatric cancer organoids retain many features of the tissues they were derived from (Calandrini et al., Nat Commun 2020; Calandrini et al., Cell Rep 2021; Meister et al., EMBO Mol Med 2022; Paassen et al., Oncogene 2023). Thus, we massively expanded the number of relevant pre-clinical in vitro model systems for cancers for which models were rare or even non-existing, including different pediatric kidney cancer subtypes. We use these models in combination with genetic engineering and (single-cell) omics technologies to study the very fundamental processes underlying tumorigenesis with the aim to find new therapies. Citation Format: Jarno Drost. Modelling childhood cancer using organoid technology [abstract]. In: Proceedings of the AACR Special Conference: Advances in Kidney Cancer Research; 2023 Jun 24-27; Austin, Texas. Philadelphia (PA): AACR; Cancer Res 2023;83(16 Suppl):Abstract nr IA012.

Genetic Engineering and Biosynthesis Technology: Keys to Unlocking the Chains of Phage Therapy.

Phages possess the ability to selectively eliminate pathogenic bacteria by recognizing bacterial surface receptors. Since their discovery, phages have been recognized for their potent bactericidal properties, making them a promising alternative to antibiotics in the context of rising antibiotic resistance. However, the rapid emergence of phage-resistant strains (generally involving temperature phage) and the limited host range of most phage strains have hindered their antibacterial efficacy, impeding their full potential. In recent years, advancements in genetic engineering and biosynthesis technology have facilitated the precise engineering of phages, thereby unleashing their potential as a novel source of antibacterial agents. In this review, we present a comprehensive overview of the diverse strategies employed for phage genetic engineering, as well as discuss their benefits and drawbacks in terms of bactericidal effect.

Transcriptome Analysis Reveals Differentially Expressed Genes Involved in Aluminum, Copper and Cadmium Accumulation in Tea 'Qianmei 419' and 'Qianfu 4'.

Tea, as a global nonalcoholic beverage, is widely consumed due to its economic, health and cultural importance. Polyploids have the ability to solve the problems of low yield, cold resistance and insect resistance in tea tree varieties. However, the response mechanism to aluminum and heavy metal remains unclear. In this study, the content of Al, Cu and Cd were measured in the leaves and roots of 'Qianmei 419' and 'Qianfu 4', respectively. The content of Al, Cd and Cu in the roots of the 'Qianmei 419' tea variety were significantly higher than in 'Qianfu 4' roots. Only the content of Cu in the leaves of the 'Qianmei 419' tea variety was significantly higher than that in the roots of the 'Qianfu 4' tea variety. Moreover, we found that the content of Al, Cu and Cd in the soil around the root of 'Qianfu 4' were higher than in the soil around the root of 'Qianmei 419'. RNA-seq was performed to identify the DEGs involved in the accumulation of Al, Cu and Cd between 'Qianmei 419' and 'Qianfu 4'. A total of 23,813 DEGs were identified in the triploid tea variety, including 16,459 upregulated DEGs and 7354 downregulated DEGs. Among them, by analyzing the expression levels of some metal transporter genes, it was found that most of the metal transporter genes were downregulated in the triploid tea plants. In short, through the analysis of transcriptome data and metal content, it was found that changes in metal transporter gene expression affect the accumulation of metals in tea plants. These results provide candidate genes to enhance multi-metal tolerance through genetic engineering technology.

Plasmid Profile of Environmental and Clinical Isolates of Multidrug Resistant Salmonella Typhimurium from Patients Attending General Hospital Asokoro, Abuja and Environ

Plasmid is isolated from Salmonella typhimurium, an enteric bacterium responsible for gastro enteritis. Gastro enteritis remains a major clinical and public health problem all over the world, especially among children in the developing countries of the sub – Sahara Africa. The profiling of plasmid isolate of Salmonella typhimurium involved cultivation, isolation, identification, and characterization. The study aimed at investigating the multidrug resistance of salmonella typhimurium of patients attending General Hospital Asokoro with typhoid fever and the susceptibility of isolates to antibiotics. A total of thirty (30) samples, from blood, stool, and water were collected from patients attending General hospital, Asokoro and the environs. The specimens were analyzed using standard microbiological, biochemical, and serological techniques. Bacteriological analysis revealed that twenty-five (25) of the specimens were positive for Salmonella typhimurium. The other five (5) specimens were negative for salmonella typhymurium typhimurium. The biochemical test revealed that they were able to utilize sugar and are lactose fermenter. Anti-microbial susceptibility determination revealed that the most active drugs against salmonella include Ciprofloxacin, Ofloxacin, Amikacin, and Gentamicin. All the isolates were resistant to tetracycline and Ampicillin. There was marked resistance of all isolates to amoxicillin, doxycycline, and chloramphenicol. The result of findings revealed that the genes that encode resistance properties in Salmonella typhimurium are plasmid- borne in some of the bacteria. These plasmids can be cloned and used for genetic engineering and recombinant DNA technology. The antibiotic susceptibility determined the appropriate drugs efficient for therapy of Salmonella infections. Keywords: Antibiotic Susceptibility, Drug Resistance, Salmonella typhimurium, Plasmid.

Comparison of Various Drought Resistance Traits in Soybean (Glycine max L.) Based on Image Analysis for Precision Agriculture.

Drought is being annually exacerbated by recent global warming, leading to crucial damage of crop growth and final yields. Soybean, one of the most consumed crops worldwide, has also been affected in the process. The development of a resistant cultivar is required to solve this problem, which is considered the most efficient method for crop producers. To accelerate breeding cycles, genetic engineering and high-throughput phenotyping technologies have replaced conventional breeding methods. However, the current novel phenotyping method still needs to be optimized by species and varieties. Therefore, we aimed to assess the most appropriate and effective phenotypes for evaluating drought stress by applying a high-throughput image-based method on the nested association mapping (NAM) population of soybeans. The acquired image-based traits from the phenotyping platform were divided into three large categories-area, boundary, and color-and demonstrated an aspect for each characteristic. Analysis on categorized traits interpreted stress responses in morphological and physiological changes. The evaluation of drought stress regardless of varieties was possible by combining various image-based traits. We might suggest that a combination of image-based traits obtained using computer vision can be more efficient than using only one trait for the precision agriculture.

High expression of antimicrobial peptides cathelicidin-BF in Pichia pastoris and verification of its activity.

Antibacterial peptides are endogenous polypeptides produced by multicellular organisms to protect the host against pathogenic microbes, they show broad spectrum antimicrobial activities against various microorganisms and possess low propensity for developing resistance. The purpose of this study is to develop recombinant antibacterial peptide cathelicidin-BF by genetic engineering and protein engineering technology, and study its antibacterial activity in vitro and in vivo, so as to provide reference for the production and application of recombinant antibacterial peptide cathelicidin-BF. In this study, on account of Pichia pastoris eukaryotic expression system, we expressed and prepared antibacterial peptide cathelicidin-BF. Then, the minimum inhibitory concentration of antibacterial peptide cathelicidin-BF and the comparison with the antibacterial activity of antibiotics were determined through the antibacterial experiment in vitro. Chickens as infection model were used to verify the antibacterial peptide activity in vivo. The results show that the bacteriostatic ability of antibacterial peptide cathelicidin-BF is similar to that of antibiotics in certain concentration, and can reach the treatment level of antibiotics. Although the mode of administration of antibacterial peptide is still limited, this study can provide reference for the future research of antibacterial peptide.

PhCHS5 and PhF3'5'H Genes Over-Expression in Petunia (Petunia hybrida) and Phalaenopsis (Phalaenopsis aphrodite) Regulate Flower Color and Branch Number.

Flower breeders are continually refining their methods for producing high-quality flowers. Phalaenopsis species are considered the most important commercially grown orchids. Advances in genetic engineering technology have provided researchers with new tools that can be used along with traditional breeding methods to enhance floral traits and quality. However, the application of molecular techniques for the breeding of new Phalaenopsis species has been relatively rare. In this study, we constructed recombinant plasmids carrying flower color-related genes, Phalaenopsis Chalcone synthase (PhCHS5) and/or Flavonoid 3',5'-hydroxylase (PhF3'5'H). These genes were transformed into both Petunia and Phalaenopsis plants using a gene gun or an Agrobacterium tumefaciens-based method. Compared with WT, 35S::PhCHS5 and 35S::PhF3'5'H both had deeper color and higher anthocyanin content in Petunia plants. Additionally, a phenotypic comparison with wild-type controls indicated the PhCHS5 or PhF3'5'H-transgenic Phalaenopsis produced more branches, petals, and labial petals. Moreover, PhCHS5 or PhF3'5'H-transgenic Phalaenopsis both showed deepened lip color, compared with the control. However, the intensity of the coloration of the Phalaenopsis lips decreased when protocorms were co-transformed with both PhCHS5 and PhF3'5'H. The results of this study confirm that PhCHS5 and PhF3'5'H affect flower color in Phalaenopsis and may be relevant for the breeding of new orchid varieties with desirable flowering traits.

Innovations in Forensic Sciences for Human Identification by DNA in the French Gendarmerie during the Last 10 Years

The IRCGN (Institut de Recherche Criminelle de la Gendarmerie Nationale) is a forensic science institute built by the French Gendarmerie which has the ability to exploit crime scene evidence. Any piece of evidence, anywhere in the world, in any environment, can be examined by IRCGN teams deployed in just a few hours. During the past 10 years, experts specializing in genetics have developed innovative genetic engineering technologies for application in forensic sciences. In this review, we highlight the main innovations and the creation of new tools for human identification, which are fully suited to the French Gendarmerie’s needs. Devices developed by the IRCGN are specific to the Gendarmerie’s purposes.

Regulation of Genome-edited Technologies: Indian Policy Perspective

Abstract: The rapid technological advances in the field of biotechnology have resulted in the formulation of effective and robust regulatory policy frameworks by different countries to ensure the safety of the products that are being developed through the application of genome editing techniques both in terms of environment and health safety perspectives. With over two and half decades of use of products derived from the application of genetic engineering technologies, this technology has stemmed the emergence of an even more advanced and precise targeted technology to address the most complicated and intrinsic challenges in a more precise manner which is now considered as Genome Editing. It is astounding to note that, at a time when several nations were debating and discussing the regulatory hurdles regarding the regulation of this technology, India has emerged as one nation with a clear policy framework with well-defined definitions in Rules 1989 itself, wherein, the definition of Gene Technology and Genetic Engineering clearly states that any alteration in the genome needs to be regulated and accordingly, India needs to regulate the products that would be developed through this novel genome editing technology. However, recognizing the global developments and after a thorough assessment of safety aspects, India, in the year 2022 promulgated the “ Guidelines for the Safety Assessment of Genome Edited Plants” wherein, it is explicitly detailed that products that are derived from SDN-1 and SDN-2 techniques and which are free of exogenous introduced DNA, are exempted from the provisions of Rules 7 to 11 (both inclusive) of the above said Rules 1989 and products derived from SDN-3 would be regulated as per provisions of Rules, 1989. If required, the concerned regulatory agencies may stipulate additional safety evaluation tests through better risk evaluation methodologies and a greater number of laboratories could also be set up along with empowering the human resource capacities for undertaking such state-of-the-art and precise techniques for the development of safe and beneficial products for the public without compromising on the safety.

Mannosylated chitosan nanoparticles loaded with ABP antigen server as a novel nucleic acid vaccine against Nocardia Seriolae infection in Micropterus Salmoides

Largemouth bass (Micropterus Salmoides) is an important cultured fish in south China with a large scale of cultivation. However, bacterial disease has badly damaged the healthy development of the breeding industry. Nocardia Seriolae (N. seriolae), a gram-positive bacterial widely existing in soil and water, mainly infects bass and snakehead. This bacterial has caused a large financial loss in China. However, efficient methods to control this pathogeny still remain largely unexplored. Previous study suggested that vaccine was efficient method to prevent fish from bacterial infection. In this study, based on reverse vaccinology, a new DNA vaccine named pcDNA-ABP was obtained by genetic engineering technology. Furthermore, to enhance the stability and target ability, mannosylated chitosan (Mcs) was used to package the nucleic acid vaccine. In order to evaluate the immunoprotection effect of this vaccine, a total of 300 fish (N = 5) were vaccinated with PBS (50 μL per fish), pET32a-ABP (10 μg per fish), pcDNA (10 μg per fish), pcDNA-ABP (20 μg per fish), Mcs-pcDNA-ABP (20 μg per fish). After 28 days' vaccination, experiment fish were challenged with live N. seriolae. Then, some immune-related indexes were measured to evaluate the variation of fish's immunity. Results showed the highest relative percentage survival (RPS) was 80.73% in Mcs-pcDNA-ABP group. What's more, the serum antibody titer, enzyme activity in vaccinated group were significantly increased compared to that of control group. Furthermore, some innate immune-related genes (IL-1β, CD4, TNF-α) and adaptive immune-related gene (IgM) were significantly up-regulated in kidney and spleen. In a word, in this study, a new DNA vaccine packaged with mannosylated chitosan was developed. Results suggested that this vaccine could significantly enhance the immunity of fish after vaccination, and increase the survival rate after live bacterial infection. This research might provide some basic information for the development of N. seriolae vaccine, and make a contribution to the control of bacterial diseases in aquaculture.

Application and Prospect of CRISPR/Cas9 Technology in Marine Diatoms

CRISPR/Cas9 technology is a third-generation artificial nuclease technology that has been successfully applied in several fields, given its simplicity and efficiency. Although it has been widely used, its application in marine organisms, especially in eukaryotic marine phytoplankton represented by marine diatoms, is just beginning. As one of the most important marine primary producers, marine diatoms have a variety of irreplaceable ecological significance and potential applications, and therefore need the support of genetic engineering technologies to advance their further development. This paper will first introduce the mechanism of action and the history of CRISPR/Cas9 technology. It will also present the application of the CRISPR/Cas9 system in the genetic engineering of marine diatoms and discuss its prospects.

Strategies for Engineering Virus Resistance in Potato.

Potato (Solanum tuberosum L.) is an important vegetable crop that plays a pivotal role in the world, especially given its potential to feed the world population and to act as the major staple food in many developing countries. Every year, significant crop loss is caused by viral diseases due to a lack of effective agrochemical treatments, since only transmission by insect vectors can be combated with the use of insecticides, and this has been an important factor hindering potato production. With the rapid development of molecular biology and plant genetic engineering technology, transgenic approaches and non-transgenic techniques (RNA interference and CRISPR-cas9) have been effectively employed to improve potato protection against devastating viruses. Moreover, the availability of viral sequences, potato genome sequences, and host immune mechanisms has remarkably facilitated potato genetic engineering. In this study, we summarize the progress of antiviral strategies applied in potato through engineering either virus-derived or plant-derived genes. These recent molecular insights into engineering approaches provide the necessary framework to develop viral resistance in potato in order to provide durable and broad-spectrum protection against important viral diseases of solanaceous crops.

Synthetic bacteria for the detection and bioremediation of heavy metals.

Toxic heavy metal accumulation is one of anthropogenic environmental pollutions, which poses risks to human health and ecological systems. Conventional heavy metal remediation approaches rely on expensive chemical and physical processes leading to the formation and release of other toxic waste products. Instead, microbial bioremediation has gained interest as a promising and cost-effective alternative to conventional methods, but the genetic complexity of microorganisms and the lack of appropriate genetic engineering technologies have impeded the development of bioremediating microorganisms. Recently, the emerging synthetic biology opened a new avenue for microbial bioremediation research and development by addressing the challenges and providing novel tools for constructing bacteria with enhanced capabilities: rapid detection and degradation of heavy metals while enhanced tolerance to toxic heavy metals. Moreover, synthetic biology also offers new technologies to meet biosafety regulations since genetically modified microorganisms may disrupt natural ecosystems. In this review, we introduce the use of microorganisms developed based on synthetic biology technologies for the detection and detoxification of heavy metals. Additionally, this review explores the technical strategies developed to overcome the biosafety requirements associated with the use of genetically modified microorganisms.

Strain improvement of Trichoderma harzianum for enhanced biocontrol capacity: Strategies and prospects.

In the control of plant diseases, biocontrol has the advantages of being efficient and safe for human health and the environment. The filamentous fungus Trichoderma harzianum and its closely related species can inhibit the growth of many phytopathogenic fungi, and have been developed as commercial biocontrol agents for decades. In this review, we summarize studies on T. harzianum species complex from the perspective of strain improvement. To elevate the biocontrol ability, the production of extracellular proteins and compounds with antimicrobial or plant immunity-eliciting activities need to be enhanced. In addition, resistance to various environmental stressors should be strengthened. Engineering the gene regulatory system has the potential to modulate a variety of biological processes related to biocontrol. With the rapidly developing technologies for fungal genetic engineering, T. harzianum strains with increased biocontrol activities are expected to be constructed to promote the sustainable development of agriculture.

Efficacy of drought-tolerant and insect-protected transgenic TELA® maize traits in Nigeria.

Assessment of efficacy of drought tolerance (DT) and insect protection (Bt) genes in maize genotypes is invaluable for commercialization and production of transgenic maize in Nigeria. Seven maize hybrids, known as TELA® maize, with stacked events of Bt insect protection (MON89034) and drought tolerance (MON87460; DroughtGard®) and their respective non-GM versions (isohybrids) developed through the TELA Maize Project were evaluated in confined field trial site at Zaria in 2020 and 2021. The objective was to assess the efficacy of stacked DT and Bt genes to seek deregulation and commercialization of both traits in Nigeria. Significant (P < 0.05-0.01) differences were observed among genotypes (G), environments (E) and genotype × environment interaction (GEI) for grain yield and most other traits under stem borer (moth species) and fall armyworm infested, drought stress, and optimum-moisture conditions, except E and GEI under drought. TELA® GM hybrids with Bt MON89034 had 19% higher yield than their non-GM isogenic versions, and 40% higher yield than the commercial checks under the target pests infestation. The foliar damage score of all the TELA® GM genotypes was ≤ 2 relative to their non-GM isogenic versions which scored ≥ 4, indicating the effectiveness of the Bt MON89034 gene in conferring resistance against stem borer and fall armyworm. Under moderate drought, pairwise comparison showed TELA® GM Hybrid 1-1 and Hybrid 2-1 had 12.4-20.4% higher (P < 0.01) yield than their isogenic versions. Under optimum-moisture condition with pests controlled, the TELA® GM and their isogenic hybrids were similar, but both had 32% higher yield than the commercial checks. Adoption of TELA® GM technology by farmers as adaptation strategy to cope with climate change, will ensure sustainability of maize production and productivity in Nigeria.

Targeting cerebral diseases with enhanced delivery of therapeutic proteins across the blood-brain barrier

ABSTRACT Introduction Cerebral diseases have been threatening public physical and psychological health in the recent years. With the existence of the blood-brain barrier (BBB), it is particularly hard for therapeutic proteins like peptides, enzymes, antibodies, etc. to enter the central nervous system (CNS) and function in diagnosis and treatment in cerebral diseases. Fortunately, the past decade has witnessed some emerging strategies of delivering macromolecular therapeutic proteins across the BBB. Areas covered Based on the structure, functions, and substances transport mechanisms, various enhanced delivery strategies of therapeutic proteins were reviewed, categorized by molecule-mediated delivery strategies, carrier-mediated delivery strategies, and other delivery strategies. Expert opinion As for molecule-mediated delivery strategies, development of genetic engineering technology, optimization of protein expression and purification techniques, and mature of quality control systems all help to realize large-scale production of recombinant antibodies, making it possible to apply to the clinical practice. In terms of carrier-mediated delivery strategies and others, although nano-carriers/adeno-associated virus (AAV) are also promising candidates for delivering therapeutic proteins or genes across the BBB, some issues still remain to be further investigated, including safety concerns related to applied materials, large-scale production costs, quality control standards, combination therapies with auxiliary delivery strategies like focused ultrasound, etc.

Targeting tumor microenvironment using tumor-infiltrating lymphocytes as therapeutics against tumorigenesis.

The immune system plays a vital role in suppressing tumor cell progression. The tumor microenvironment augmented with significant levels of tumor-infiltrating lymphocytes has been widely investigated and it is suggested that tumor-infiltrating lymphocytes have shown a significant role in the prognosis of cancer patients. Compared to ordinary non-infiltrating lymphocytes, tumor-infiltrating lymphocytes (TILs) are a significant population of lymphocytes that infiltrate tumor tissue and have a higher level of specific immunological reactivity against tumor cells. They serve as an effective immunological defense against various malignancies. TILs are a diverse group of immune cells that are divided into immune subsets based on the pathological and physiological impact they have on the immune system. TILs mainly consist of B-cells, T-cells, or natural killer cells with diverse phenotypic and functional properties. TILs are known to be superior to other immune cells in that they can recognize a wide range of heterogeneous tumor antigens by producing many clones of T cell receptors (TCRs), outperforming treatments like TCR-T cell and CAR-T therapy. With the introduction of genetic engineering technologies, tumor-infiltrating lymphocytes (TILs) have become a ground-breaking therapeutic option for malignancies, but because of the hindrances opposed by the immune microenvironment and the mutation of antigens, the development of TILs as therapeutic has been hindered. By giving some insight into the many variables, such as the various barriers inhibiting its usage as a potential therapeutic agent, we have examined various aspects of TILs in this work.

Genome-Wide Identification of 2-Oxoglutarate and Fe (II)-Dependent Dioxygenase (2ODD-C) Family Genes and Expression Profiles under Different Abiotic Stresses in Camellia sinensis (L.)

The 2-oxoglutarate and Fe (II)-dependent dioxygenase (2ODD-C) family of 2-oxoglutarate-dependent dioxygenases potentially participates in the biosynthesis of various metabolites under various abiotic stresses. However, there is scarce information on the expression profiles and roles of 2ODD-C genes in Camellia sinensis. We identified 153 Cs2ODD-C genes from C. sinensis, and they were distributed unevenly on 15 chromosomes. According to the phylogenetic tree topology, these genes were divided into 21 groups distinguished by conserved motifs and an intron/exon structure. Gene-duplication analyses revealed that 75 Cs2ODD-C genes were expanded and retained after WGD/segmental and tandem duplications. The expression profiles of Cs2ODD-C genes were explored under methyl jasmonate (MeJA), polyethylene glycol (PEG), and salt (NaCl) stress treatments. The expression analysis showed that 14, 13, and 49 Cs2ODD-C genes displayed the same expression pattern under MeJA and PEG treatments, MeJA and NaCl treatments, and PEG and NaCl treatments, respectively. A further analysis showed that two genes, Cs2ODD-C36 and Cs2ODD-C21, were significantly upregulated and downregulated after MeJA, PEG, and NaCl treatments, indicating that these two genes played positive and negative roles in enhancing the multi-stress tolerance. These results provide candidate genes for the use of genetic engineering technology to modify plants by enhancing multi-stress tolerance to promote phytoremediation efficiency.