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Fizikova A, Subcheva E, Kozlov N, Tvorogova V, Samarina L, Lutova L, Khlestkina E. Agrobacterium Transformation of Tea Plants ( Camellia sinensis (L.) KUNTZE): A Small Experiment with Great Prospects. PLANTS (BASEL, SWITZERLAND) 2024; 13:675. [PMID: 38475520 DOI: 10.3390/plants13050675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024]
Abstract
Tea has historically been one of the most popular beverages, and it is currently an economically significant crop cultivated in over 50 countries. The Northwestern Caucasus is one of the northernmost regions for industrial tea cultivation worldwide. The domestication of the tea plant in this region took approximately 150 years, during which plantations spreading from the Ozurgeti region in northern Georgia to the southern city of Maykop in Russia. Consequently, tea plantations in the Northern Caucasus can serve as a source of unique genotypes with exceptional cold tolerance. Tea plants are known to be recalcitrant to Agrobacterium-mediated transfection. Research into optimal transfection and regeneration methodologies, as well as the identification of tea varieties with enhanced transformation efficiency, is an advanced strategy for improving tea plant culture. The aim of this study was to search for the optimal Agrobacterium tumefaciens-mediated transfection protocol for the Kolkhida tea variety. As a result of optimizing the transfection medium with potassium phosphate buffer at the stages of pre-inoculation, inoculation and co-cultivation, the restoration of normal morphology and improvement in the attachment of Agrobacterium cells to the surface of tea explants were observed by scanning electron microscopy. And an effective method of high-efficiency Agrobacteria tumefaciens-mediated transfection of the best local tea cultivar, Kolkhida, was demonstrated for the first time.
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Affiliation(s)
- Anastasia Fizikova
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, 2/28, Yana Fabritsiusa Street, 354002 Sochi, Russia
| | - Elena Subcheva
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
| | - Nikolay Kozlov
- Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya Emb 7/9, 199034 Saint-Petersburg, Russia
| | - Varvara Tvorogova
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya Emb 7/9, 199034 Saint-Petersburg, Russia
| | - Lidia Samarina
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, 2/28, Yana Fabritsiusa Street, 354002 Sochi, Russia
| | - Ludmila Lutova
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya Emb 7/9, 199034 Saint-Petersburg, Russia
| | - Elena Khlestkina
- Plant Biology and Biotechnology Department, Sirius University of Science and Technology, Olympic Avenue, 1, 354340 Sochi, Russia
- N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), B. Morskaya Street, 42-44, 190000 St. Petersburg, Russia
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Ma H, Liu N, Sun X, Zhu M, Mao T, Huang S, Meng X, Li H, Wang M, Liang H. Establishment of an efficient transformation system and its application in regulatory mechanism analysis of biological macromolecules in tea plants. Int J Biol Macromol 2023:125372. [PMID: 37321436 DOI: 10.1016/j.ijbiomac.2023.125372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/11/2023] [Indexed: 06/17/2023]
Abstract
Tea (Camellia sinensis), one of the most important beverage crops originated from China and is now cultivated worldwide, provides numerous secondary metabolites that account for its health benefits and rich flavor. However, the lack of an efficient and reliable genetic transformation system has seriously hindered the gene function investigation and precise breeding of C. sinensis. In this study, we established a highly efficient, labor-saving, and cost-effective Agrobacterium rhizogenes-mediated hairy roots genetic transformation system for C. sinensis, which can be used for gene overexpression and genome editing. The established transformation system was simple to operate, bypassing tissue culture and antibiotic screening, and only took two months to complete. We used this system to conduct function analysis of transcription factor CsMYB73 and found that CsMYB73 negatively regulates L-theanine synthesis in tea plant. Additionally, callus formation was successfully induced using transgenic roots, and the transgenic callus exhibited normal chlorophyll production, enabling the study of the corresponding biological functions. Furthermore, this genetic transformation system was effective for multiple C. sinensis varieties and other woody plant species. By overcoming technical obstacles such as low efficiency, long experimental periods, and high costs, this genetic transformation will be a valuable tool for routine gene investigation and precise breeding in tea plants.
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Affiliation(s)
- Haijie Ma
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China; Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, China.
| | - Ningge Liu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xuepeng Sun
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Mengling Zhu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Tingfeng Mao
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Suya Huang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xinyue Meng
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Hangfei Li
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Min Wang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Huiling Liang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
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Zhang ZB, Xiong T, Chen JH, Ye F, Cao JJ, Chen YR, Zhao ZW, Luo T. Understanding the Origin and Evolution of Tea (Camellia sinensis [L.]): Genomic Advances in Tea. J Mol Evol 2023; 91:156-168. [PMID: 36859501 DOI: 10.1007/s00239-023-10099-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 02/07/2023] [Indexed: 03/03/2023]
Abstract
Tea, which is processed by the tender shoots or leaves of tea plant (Camellia sinensis), is one of the most popular nonalcoholic beverages in the world and has numerous health benefits for humans. Along with new progress in biotechnologies, the refined chromosome-scale reference tea genomes have been achieved, which facilitates great promise for the understanding of fundamental genomic architecture and evolution of the tea plants. Here, we summarize recent achievements in genome sequencing in tea plants and review the new progress in origin and evolution of tea plants by population sequencing analysis. Understanding the genomic characterization of tea plants is import to improve tea quality and accelerate breeding in tea plants.
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Affiliation(s)
- Zai-Bao Zhang
- College of Life Science, Xinyang Normal University, Xinyang, 464000, China.
| | - Tao Xiong
- College of Life Science, Xinyang Normal University, Xinyang, 464000, China
| | - Jia-Hui Chen
- College of International Education, Xinyang Normal University, Xinyang, 464000, China
| | - Fan Ye
- College of International Education, Xinyang Normal University, Xinyang, 464000, China
| | - Jia-Jia Cao
- College of International Education, Xinyang Normal University, Xinyang, 464000, China
| | - Yu-Rui Chen
- College of International Education, Xinyang Normal University, Xinyang, 464000, China
| | - Zi-Wei Zhao
- College of Life Science, Xinyang Normal University, Xinyang, 464000, China
| | - Tian Luo
- College of Life Science, Xinyang Normal University, Xinyang, 464000, China
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Ramadhan F, Alfiko Y, Purwantomo S, Mubarok AF, Budinarta W, Suwanto A, Budiarti S. A New Approach for Controlling Agrobacterium tumefaciens Post Transformation Using Lytic Bacteriophage. PLANTS (BASEL, SWITZERLAND) 2022; 11:3124. [PMID: 36432853 PMCID: PMC9698577 DOI: 10.3390/plants11223124] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
Overgrowth of Agrobacterium tumefaciens has frequently been found in Agrobacterium-mediated plant transformation. This overgrowth can reduce transformation efficiency and even lead to explant death. Therefore, this research investigates an alternative way to mitigate or eliminate Agrobacterium after transformation using a bacteriophage. To develop this alternative method, we conducted effectiveness studies of two lytic bacteriophages (ΦK2 and ΦK4) and performed an application test to control Agrobacterium growth after transformation. According to plaque morphological characterization and molecular analysis, the two bacteriophages used in this experiment were distinct. Moreover, some stability physicochemical and growth kinetics, such as adsorption time and susceptibility test, also showed that both bacteriophages differed. On the other hand, the optimum temperature and pH of both phages were the same at 28-30 °C and pH 7. Further investigation showed that both ΦK2 and ΦK4 were able to reduce the overgrowth of A. tumefaciens post transformation. Moreover, applying the cocktail (mixture of ΦK2 and ΦK4) with antibiotic application eradicated A. tumefaciens (0% overgrowth percentage). This result indicates that the application of bacteriophage could be used as an alternative way to eradicate the overgrowth of A. tumefaciens subsequent to transformation.
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Affiliation(s)
- Fiqih Ramadhan
- Graduate School of Biotechnology, IPB University, Bogor 16680, Indonesia
| | - Yuzer Alfiko
- Biotech Laboratory, Wilmar Benih Indonesia, Bekasi 17530, Indonesia
| | - Sigit Purwantomo
- Biotech Laboratory, Wilmar Benih Indonesia, Bekasi 17530, Indonesia
| | | | - Widyah Budinarta
- Biotech Laboratory, Wilmar Benih Indonesia, Bekasi 17530, Indonesia
| | - Antonius Suwanto
- Graduate School of Biotechnology, IPB University, Bogor 16680, Indonesia
- Department of Biology, Faculty of Mathematics and Natural Sciences, IPB University, Bogor 16680, Indonesia
| | - Sri Budiarti
- Graduate School of Biotechnology, IPB University, Bogor 16680, Indonesia
- Department of Biology, Faculty of Mathematics and Natural Sciences, IPB University, Bogor 16680, Indonesia
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Jin K, Tian N, da Silva Ferreira JF, Sandhu D, Xiao L, Gu M, Luo Y, Zhang X, Liu G, Liu Z, Huang J, Liu S. Comparative Transcriptome Analysis of Agrobacterium tumefaciens Reveals the Molecular Basis for the Recalcitrant Genetic Transformation of Camellia sinensis L. Biomolecules 2022; 12:688. [PMID: 35625616 PMCID: PMC9138961 DOI: 10.3390/biom12050688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 11/17/2022] Open
Abstract
Tea (Camellia sinensis L.), an important economic crop, is recalcitrant to Agrobacterium-mediated transformation (AMT), which has seriously hindered the progress of molecular research on this species. The mechanisms leading to low efficiency of AMT in tea plants, related to the morphology, growth, and gene expression of Agrobacterium tumefaciens during tea-leaf explant infection, were compared to AMT of Nicotiana benthamiana leaves in the present work. Scanning electron microscopy (SEM) images showed that tea leaves induced significant morphological aberrations on bacterial cells and affected pathogen-plant attachment, the initial step of a successful AMT. RNA sequencing and transcriptomic analysis on Agrobacterium at 0, 3 and 4 days after leaf post-inoculation resulted in 762, 1923 and 1656 differentially expressed genes (DEGs) between the tea group and the tobacco group, respectively. The expressions of genes involved in bacterial fundamental metabolic processes, ATP-binding cassette (ABC) transporters, two-component systems (TCSs), secretion systems, and quorum sensing (QS) systems were severely affected in response to the tea-leaf phylloplane. Collectively, these results suggest that compounds in tea leaves, especially gamma-aminobutyrate (GABA) and catechins, interfered with plant-pathogen attachment, essential minerals (iron and potassium) acquisition, and quorum quenching (QQ) induction, which may have been major contributing factors to hinder AMT efficiency of the tea plant.
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Affiliation(s)
- Ke Jin
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Na Tian
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Jorge Freire da Silva Ferreira
- United States Salinity Laboratory, United States Department of Agriculture, Agricultural Research Service, Riverside, CA 92507, USA; (J.F.d.S.F.); (D.S.)
| | - Devinder Sandhu
- United States Salinity Laboratory, United States Department of Agriculture, Agricultural Research Service, Riverside, CA 92507, USA; (J.F.d.S.F.); (D.S.)
| | - Lizheng Xiao
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
| | - Meiyi Gu
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
| | - Yiping Luo
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Xiangqin Zhang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Guizhi Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Zhonghua Liu
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Jianan Huang
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
| | - Shuoqian Liu
- Department of Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China; (K.J.); (N.T.); (L.X.); (M.G.)
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (Y.L.); (X.Z.); (G.L.)
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6
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Conti G, Xoconostle-Cázares B, Marcelino-Pérez G, Hopp HE, Reyes CA. Citrus Genetic Transformation: An Overview of the Current Strategies and Insights on the New Emerging Technologies. FRONTIERS IN PLANT SCIENCE 2021; 12:768197. [PMID: 34917104 PMCID: PMC8670418 DOI: 10.3389/fpls.2021.768197] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/14/2021] [Indexed: 05/04/2023]
Abstract
Citrus are among the most prevailing fruit crops produced worldwide. The implementation of effective and reliable breeding programs is essential for coping with the increasing demands of satisfactory yield and quality of the fruit as well as to deal with the negative impact of fast-spreading diseases. Conventional methods are time-consuming and of difficult application because of inherent factors of citrus biology, such as their prolonged juvenile period and a complex reproductive stage, sometimes presenting infertility, self-incompatibility, parthenocarpy, or polyembryony. Moreover, certain desirable traits are absent from cultivated or wild citrus genotypes. All these features are challenging for the incorporation of the desirable traits. In this regard, genetic engineering technologies offer a series of alternative approaches that allow overcoming the difficulties of conventional breeding programs. This review gives a detailed overview of the currently used strategies for the development of genetically modified citrus. We describe different aspects regarding genotype varieties used, including elite cultivars or extensively used scions and rootstocks. Furthermore, we discuss technical aspects of citrus genetic transformation procedures via Agrobacterium, regular physical methods, and magnetofection. Finally, we describe the selection of explants considering young and mature tissues, protoplast isolation, etc. We also address current protocols and novel approaches for improving the in vitro regeneration process, which is an important bottleneck for citrus genetic transformation. This review also explores alternative emerging transformation strategies applied to citrus species such as transient and tissue localized transformation. New breeding technologies, including cisgenesis, intragenesis, and genome editing by clustered regularly interspaced short palindromic repeats (CRISPR), are also discussed. Other relevant aspects comprising new promoters and reporter genes, marker-free systems, and strategies for induction of early flowering, are also addressed. We provided a future perspective on the use of current and new technologies in citrus and its potential impact on regulatory processes.
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Affiliation(s)
- Gabriela Conti
- Instituto de Agrobiotecnología y Biología Molecular, UEDD INTA-CONICET, Hurlingham, Argentina
- Cátedra de Genética, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Beatriz Xoconostle-Cázares
- Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Gabriel Marcelino-Pérez
- Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Horacio Esteban Hopp
- Instituto de Agrobiotecnología y Biología Molecular, UEDD INTA-CONICET, Hurlingham, Argentina
- Laboratorio de Agrobiotecnología, Facultad de Ciencias Exactas y Naturales, Departamento de Fisiología, Biología Molecular y Celular (FBMC), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carina A. Reyes
- Instituto de Biotecnología y Biología Molecular, CCT-La Plata, CONICET-UNLP, Buenos Aires, Argentina
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Liao Y, Zhou X, Zeng L. How does tea ( Camellia sinensis) produce specialized metabolites which determine its unique quality and function: a review. Crit Rev Food Sci Nutr 2021; 62:3751-3767. [PMID: 33401945 DOI: 10.1080/10408398.2020.1868970] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Tea (Camellia sinensis) is both a plant and a foodstuff. Many bioactive compounds, which are present in the final tea product and related to its quality or functional properties, are produced during the tea manufacturing process. However, the characteristic secondary metabolites, which give tea its unique qualities and are beneficial to human health, are produced mainly in the leaves during the process of plant growth. Therefore, it is important to understand how tea leaves produce these specialized metabolites. In this review, we first compare the common metabolites and specialized metabolites in tea, coffee, cocoa, and grape and discuss the occurrence of characteristic secondary metabolites in tea. Progress in research into the formation of these characteristic secondary metabolites in tea is summarized, including establishing a biological database and genetic transformation system, and the biosynthesis of characteristic secondary metabolites. Finally, speculation on future research into the characteristic secondary metabolites of tea is provided from the viewpoints of the origin, resources, cultivation, and processing of tea. This review provides an important reference for future research on the specialized metabolites of tea in terms of its characteristics.
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Affiliation(s)
- Yinyin Liao
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaochen Zhou
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Lanting Zeng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.,Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, China
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Furukawa K, Koizumi M, Hayashi W, Mochizuki H, Yamaki K. Pretreatment and posttreatment in the biolistic transformation of tea plant ( Camellia sinensis) somatic embryos. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2020; 37:195-203. [PMID: 32821227 PMCID: PMC7434672 DOI: 10.5511/plantbiotechnology.20.0404a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
The tea plant (Camellia sinensis) contains various metabolic substances, including catechins and caffeine, for which genetic transformation techniques are essential for investigating the associated metabolic pathways. In this study, we sought to optimize the conditions and culture process for particle bombardment-mediated transformation of tea plant somatic embryos. We describe somatic embryo pretreatment for effective transient transformation in biolistic bombardment and the posttreatment conditions of somatic embryos for accelerating differentiation after bombardment. For the purpose of transformation, we used the somatic embryos of C. sinensis var. assamica 'Tingamira normal,' which were cultured in Murashige and Skoog (MS) medium containing 2 mg l-1 indole-3-butyric acid (IBA) and 4 mg l-1 6-benzyladenine (BA) at 25°C ±2°C under a 16-h photoperiod. With respect to the optimization of particle bombardment conditions for tea somatic embryos, we examined the effects of different Au colloid particle diameters and bombardment pressures, and accordingly established bombardment with 1.0-µm-diameter DNA-coated Au colloid at 1,100 psi as optimal conditions for introducing DNA for the transient expression of GUS. Additionally, we found that transplantation of tea somatic embryos from IBA/BA medium to a hormone-free medium prior to bombardment and incubation in the dark post-bombardment increased the frequency of secondary embryo production. Furthermore, osmotic treatment by culturing the somatic embryos in medium supplemented with 0.4 M mannitol improved transient transformation efficiency. After transformation, the culture of somatic embryos on filter papers or Kimwipes soaked in MS medium facilitated rapid and effective development of the somatic embryos.
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Affiliation(s)
- Kazumi Furukawa
- Department of Chemistry and Biochemistry, National Institute of Technology (KOSEN), Numazu College, 3600 Ooka, Numazu, Shizuoka 410-8501, Japan
| | - Mai Koizumi
- Department of Integrated System Engineering, Advanced Course, National Institute of Technology (KOSEN), Numazu College, 3600 Ooka, Numazu, Shizuoka 410-8501, Japan
| | - Wakana Hayashi
- Department of Chemistry and Biochemistry, National Institute of Technology (KOSEN), Numazu College, 3600 Ooka, Numazu, Shizuoka 410-8501, Japan
| | - Hideto Mochizuki
- Department of Integrated System Engineering, Advanced Course, National Institute of Technology (KOSEN), Numazu College, 3600 Ooka, Numazu, Shizuoka 410-8501, Japan
| | - Kaito Yamaki
- Department of Integrated System Engineering, Advanced Course, National Institute of Technology (KOSEN), Numazu College, 3600 Ooka, Numazu, Shizuoka 410-8501, Japan
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Xia EH, Tong W, Wu Q, Wei S, Zhao J, Zhang ZZ, Wei CL, Wan XC. Tea plant genomics: achievements, challenges and perspectives. HORTICULTURE RESEARCH 2020; 7:7. [PMID: 31908810 PMCID: PMC6938499 DOI: 10.1038/s41438-019-0225-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/17/2019] [Accepted: 11/03/2019] [Indexed: 05/18/2023]
Abstract
Tea is among the world's most widely consumed non-alcoholic beverages and possesses enormous economic, health, and cultural values. It is produced from the cured leaves of tea plants, which are important evergreen crops globally cultivated in over 50 countries. Along with recent innovations and advances in biotechnologies, great progress in tea plant genomics and genetics has been achieved, which has facilitated our understanding of the molecular mechanisms of tea quality and the evolution of the tea plant genome. In this review, we briefly summarize the achievements of the past two decades, which primarily include diverse genome and transcriptome sequencing projects, gene discovery and regulation studies, investigation of the epigenetics and noncoding RNAs, origin and domestication, phylogenetics and germplasm utilization of tea plant as well as newly developed tools/platforms. We also present perspectives and possible challenges for future functional genomic studies that will contribute to the acceleration of breeding programs in tea plants.
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Affiliation(s)
- En-Hua Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Wei Tong
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Qiong Wu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Shu Wei
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Jian Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Zheng-Zhu Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Chao-Ling Wei
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Xiao-Chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
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Alagarsamy K, Shamala LF, Wei S. Protocol: high-efficiency in- planta Agrobacterium-mediated transgenic hairy root induction of Camellia sinensis var. sinensis. PLANT METHODS 2018; 14:17. [PMID: 29483937 PMCID: PMC5824481 DOI: 10.1186/s13007-018-0285-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 02/19/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Camellia sinensis var. sinensis is widely grown for tea beverages that possess significant health promoting effects. Studies on tea plant genetics and breeding are hindered due to its recalcitrance to Agrobacterium-mediated genetic transformation. Among the possible reasons, oxidation of phenolics released from explant tissues and bactericidal effects of tea polyphenols during the process of transformation play a role in the plant recalcitrance. The aim of the present study was to alleviate the harmful effects of phenolic compounds using in-planta transformation. RESULTS Two-month old seedlings of tea cultivar "Nong Kangzao" were infected at the hypocotyl with wild type Agrobacterium rhizogenes and maintained in an environment of high humidity. 88.3% of infected plants developed hairy roots at the wounded site after 2 months of infection. Our data indicated that transgenic hairy root induction of tea can be achieved using A. rhizogenes following the optimized protocol. CONCLUSION With this method, composite tea plants containing wild-type shoots with transgenic roots can be generated for "in root" gene functional characterization and root-shoot interaction studies. Moreover, this method can be applied to improve the root system of composite tea plants for a better resistance to abiotic and biotic stresses.
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Affiliation(s)
- Karthikeyan Alagarsamy
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 Anhui China
| | - Lubobi Ferdinand Shamala
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 Anhui China
| | - Shu Wei
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 Anhui China
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Unno K, Noda S, Kawasaki Y, Yamada H, Morita A, Iguchi K, Nakamura Y. Reduced Stress and Improved Sleep Quality Caused by Green Tea Are Associated with a Reduced Caffeine Content. Nutrients 2017; 9:nu9070777. [PMID: 28753943 DOI: 10.1080/07352689.2012.747384] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/11/2017] [Accepted: 07/16/2017] [Indexed: 05/25/2023] Open
Abstract
Caffeine, one of the main components in green tea, can interfere with sleep and block the effect of theanine. Since theanine, the main amino acid in tea leaves, has significant anti-stress effects in animals and humans, we examined the effects of green tea with lowered caffeine content, i.e., low-caffeine green tea (LCGT), on stress and quality of sleep of middle-aged individuals (n = 20, mean age 51.3 ± 6.7 years) in a double-blind crossover design. Standard green tea (SGT) was used as the control. These teas (≥300 mL/day), which were eluted with room temperature water, were consumed over a period of seven days after a single washout term. The level of salivary α-amylase activity (sAA), a stress marker, was significantly lower in participants that consumed LCGT (64.7 U/mL) than in those that consumed SGT (73.9 U/mL). Sleep quality was higher in participants that consumed a larger quantity of LCGT. In addition, a self-diagnostic check for accumulated fatigue was significantly lower in those participants that consumed LCGT than SGT. These results indicate that LCGT intake can reduce stress in middle-aged individuals and improve their quality of sleep. The reduction in caffeine is suggested to be a valid reason for enhancing the anti-stress effect of green tea.
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Affiliation(s)
- Keiko Unno
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan.
- Tea Science Center, Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
| | - Shigenori Noda
- Division of Drug Evaluation & Informatics, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
| | - Yohei Kawasaki
- Division of Drug Evaluation & Informatics, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
| | - Hiroshi Yamada
- Division of Drug Evaluation & Informatics, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
| | - Akio Morita
- Department of Functional Plant Physiology, Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan.
| | - Kazuaki Iguchi
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan.
| | - Yoriyuki Nakamura
- Tea Science Center, Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
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12
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Rana MM, Han ZX, Song DP, Liu GF, Li DX, Wan XC, Karthikeyan A, Wei S. Effect of Medium Supplements on Agrobacterium rhizogenes Mediated Hairy Root Induction from the Callus Tissues of Camellia sinensis var. sinensis. Int J Mol Sci 2016; 17:ijms17071132. [PMID: 27428960 PMCID: PMC4964505 DOI: 10.3390/ijms17071132] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/29/2016] [Accepted: 07/04/2016] [Indexed: 11/17/2022] Open
Abstract
Tea (Camellia sinensis L.) is recalcitrant to Agrobacterium-mediated genetic transformation largely due to the bactericidal effects of tea polyphenols and phenolics oxidation induced by necrosis of explant tissue over the process of transformation. In this study, different antioxidants/adsorbents were added as supplements to the co-cultivation and post co-cultivation media to overcome these problems for the transformation improvement. Tea-cotyledon-derived calli were used as explants and Agrobacterium rhizognes strain ATCC 15834 was used as a mediator. Results showed that Agrobacterium growth, virulence (vir) gene expression and browning of explant tissue were greatly influenced by different supplements. Murashige and Skoog (MS) basal salts medium supplemented with 30 g·L−1 sucrose, 0.1 g·L−1l-glutamine and 5 g·L−1 polyvinylpolypyrrolidone (PVPP) as co-cultivation and post co-cultivation media could maintain these parameters better that ultimately led to significant improvement of hairy root generation efficiency compared to that in the control (MS + 30 g·L−1 sucrose). Additionally, the reporter genes β-glucuronidase (gusA) and cyan fluorescent protein (cfp) were also stably expressed in the transgenic hairy roots. Our study would be helpful in establishing a feasible approach for tea biological studies and genetic improvement of tea varieties.
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Affiliation(s)
- Mohammad M Rana
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
- Agronomy Division, Bangladesh Tea Research Institute, Srimangal-3210, Moulvibazar, Bangladesh.
| | - Zhuo-Xiao Han
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
| | - Da-Peng Song
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
| | - Guo-Feng Liu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
| | - Da-Xiang Li
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
| | - Xiao-Chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
| | - Alagarsamy Karthikeyan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
| | - Shu Wei
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Blvd West, Hefei 230036, China.
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Singh HR, Deka M, Das S. Enhanced resistance to blister blight in transgenic tea (Camellia sinensis [L.] O. Kuntze) by overexpression of class I chitinase gene from potato (Solanum tuberosum). Funct Integr Genomics 2015; 15:461-80. [PMID: 25772466 DOI: 10.1007/s10142-015-0436-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 02/17/2015] [Accepted: 03/02/2015] [Indexed: 12/01/2022]
Abstract
Tea is the second most consumed beverage in the world. A crop loss of up to 43 % has been reported due to blister blight disease of tea caused by a fungus, Exobasidium vexans. Thus, it directly affects the tea industry qualitatively and quantitatively. Solanum tuberosum class I chitinase gene (AF153195) is a plant pathogenesis-related gene. It was introduced into tea genome via Agrobacterium-mediated transformation with hygromycin phosphotransferase (hpt) gene conferring hygromycin resistance as plant selectable marker. A total of 41 hygromycin resistant plantlets were obtained, and PCR analysis established 12 plantlets confirming about the stable integration of transgene in the plant genome. Real-time PCR detected transgene expression in four transgenic plantlets (T28, C57, C9, and T31). Resistance to biotrophic fungal pathogen, E. vexans, was tested by detached leaf infection assay of greenhouse acclimated plantlets. An inhibitory activity against the fungal pathogen was evident from the detached leaves from the transformants compared with the control. Fungal lesion formed on control plantlet whereas the transgenic plantlets showed resistance to inoculated fungal pathogen by the formation of hypersensitivity reaction area. This result suggests that constitutive expression of the potato class I chitinase gene can be exploited to improve resistance to fungal pathogen, E. vexans, in economical perennial plantation crop like tea.
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Affiliation(s)
- H Ranjit Singh
- Biotechnology Department, Tocklai Tea Research Institute, Jorhat, Assam, India,
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14
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Pitzschke A. Agrobacterium infection and plant defense-transformation success hangs by a thread. FRONTIERS IN PLANT SCIENCE 2013; 4:519. [PMID: 24391655 PMCID: PMC3866890 DOI: 10.3389/fpls.2013.00519] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 12/02/2013] [Indexed: 05/19/2023]
Abstract
The value of Agrobacterium tumefaciens for plant molecular biologists cannot be appreciated enough. This soil-borne pathogen has the unique capability to transfer DNA (T-DNA) into plant systems. Gene transfer involves both bacterial and host factors, and it is the orchestration of these factors that determines the success of transformation. Some plant species readily accept integration of foreign DNA, while others are recalcitrant. The timing and intensity of the microbially activated host defense repertoire sets the switch to "yes" or "no." This repertoire is comprised of the specific induction of mitogen-activated protein kinases (MAPKs), defense gene expression, production of reactive oxygen species (ROS) and hormonal adjustments. Agrobacterium tumefaciens abuses components of the host immunity system it mimics plant protein functions and manipulates hormone levels to bypass or override plant defenses. A better understanding of the ongoing molecular battle between agrobacteria and attacked hosts paves the way toward developing transformation protocols for recalcitrant plant species. This review highlights recent findings in agrobacterial transformation research conducted in diverse plant species. Efficiency-limiting factors, both of plant and bacterial origin, are summarized and discussed in a thought-provoking manner.
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Affiliation(s)
- Andrea Pitzschke
- *Correspondence: Andrea Pitzschke, Department of Applied Genetics and Cell Biology, University of Natural Resources and Applied Life Sciences, Muthgasse 18, Vienna A-1190, Austria e-mail:
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Kumar N, Gulati A, Bhattacharya A. l-Glutamine and l-Glutamic Acid Facilitate Successful Agrobacterium Infection of Recalcitrant Tea Cultivars. Appl Biochem Biotechnol 2013; 170:1649-64. [DOI: 10.1007/s12010-013-0286-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 05/06/2013] [Indexed: 10/26/2022]
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16
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Paul A, Bakshi S, Sahoo DP, Kalita MC, Sahoo L. Agrobacterium-Mediated Genetic Transformation of Pogostemon cablin (Blanco) Benth. Using Leaf Explants: Bactericidal Effect of Leaf Extracts and Counteracting Strategies. Appl Biochem Biotechnol 2012; 166:1871-95. [DOI: 10.1007/s12010-012-9612-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 02/13/2012] [Indexed: 11/21/2022]
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17
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Cha TS, Yee W, Aziz A. Assessment of factors affecting Agrobacterium-mediated genetic transformation of the unicellular green alga, Chlorella vulgaris. World J Microbiol Biotechnol 2011; 28:1771-9. [PMID: 22805959 DOI: 10.1007/s11274-011-0991-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Accepted: 12/17/2011] [Indexed: 10/14/2022]
Abstract
The successful establishment of an Agrobacterium-mediated transformation method and optimisation of six critical parameters known to influence the efficacy of Agrobacterium T-DNA transfer in the unicellular microalga Chlorella vulgaris (UMT-M1) are reported. Agrobacterium tumefaciens strain LBA4404 harbouring the binary vector pCAMBIA1304 containing the gfp:gusA fusion reporter and a hygromycin phosphotransferase (hpt) selectable marker driven by the CaMV35S promoter were used for transformation. Transformation frequency was assessed by monitoring transient β-glucuronidase (GUS) expression 2 days post-infection. It was found that co-cultivation temperature at 24°C, co-cultivation medium at pH 5.5, 3 days of co-cultivation, 150 μM acetosyringone, Agrobacterium density of 1.0 units (OD(600)) and 2 days of pre-culture were optimum variables which produced the highest number of GUS-positive cells (8.8-20.1%) when each of these parameters was optimised individually. Transformation conducted with the combination of all optimal parameters above produced 25.0% of GUS-positive cells, which was almost a threefold increase from 8.9% obtained from un-optimised parameters. Evidence of transformation was further confirmed in 30% of 30 randomly-selected hygromycin B (20 mg L(-1)) resistant colonies by polymerase chain reaction (PCR) using gfp:gusA and hpt-specific primers. The developed transformation method is expected to facilitate the genetic improvement of this commercially-important microalga.
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Affiliation(s)
- Thye San Cha
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu, Malaysia.
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Mohanpuria P, Kumar V, Ahuja PS, Yadav SK. Producing low-caffeine tea through post-transcriptional silencing of caffeine synthase mRNA. PLANT MOLECULAR BIOLOGY 2011; 76:523-34. [PMID: 21562910 DOI: 10.1007/s11103-011-9785-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Accepted: 05/02/2011] [Indexed: 05/24/2023]
Abstract
In this study, attempt has been made to produce a selected cultivar of tea with low-caffeine content using RNAi technology. The caffeine biosynthetic pathway in tea has been proposed to involve three N-methyltransferases such as xanthosine methyltransferase, 7-N-methylxanthine methyltransferase and 3, 7-dimethylxanthine methyltransferase. Last two steps of caffeine biosynthesis in tea have been known to be catalyzed by a bifunctional enzyme known as caffeine synthase. To suppress the caffeine synthesis in the selected tea [Camellia sinensis (L.) O. Kuntze] cv. Kangra jat, we isolated a partial fragment of caffeine synthase (CS) from the same cultivar and used to design RNAi construct (pFGC1008-CS). Somatic embryos were transformed with the developed construct using biolistic method. Transformed somatic embryos showed reduction in the levels of CS transcript expression as well as in caffeine content. Plants were regenerated from the transformed somatic embryos. Transgenic plants showed a significant suppression of CS transcript expression and also showed a reduction of 44-61% in caffeine and 46-67% in theobromine contents as compared to the controls. These results suggest that the RNAi construct developed here using a single partial fragment of CS gene reduced the expression of the targeted endogenous gene significantly. However, the reduction in theobromine content in addition to caffeine documented the involvement of this single CS in the catalysis of last two methyl transfer steps in caffeine biosynthesis of tea.
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Affiliation(s)
- Prashant Mohanpuria
- Biotechnology Division, Institute of Himalayan Bioresource Technology, CSIR, Palampur, 176061, HP, India
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Sandal I, Bhattacharya A, Saini U, Kaur D, Sharma S, Gulati A, Kumar JK, Kumar N, Dayma J, Das P, Singh B, Ahuja PS. Chemical modification of L-glutamine to alpha-amino glutarimide on autoclaving facilitates Agrobacterium infection of host and non-host plants: A new use of a known compound. BMC CHEMICAL BIOLOGY 2011; 11:1. [PMID: 21624145 PMCID: PMC3130638 DOI: 10.1186/1472-6769-11-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Accepted: 05/31/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND Accidental autoclaving of L-glutamine was found to facilitate the Agrobacterium infection of a non host plant like tea in an earlier study. In the present communication, we elucidate the structural changes in L-glutamine due to autoclaving and also confirm the role of heat transformed L-glutamine in Agrobacterium mediated genetic transformation of host/non host plants. RESULTS When autoclaved at 121°C and 15 psi for 20 or 40 min, L-glutamine was structurally modified into 5-oxo proline and 3-amino glutarimide (α-amino glutarimide), respectively. Of the two autoclaved products, only α-amino glutarimide facilitated Agrobacterium infection of a number of resistant to susceptible plants. However, the compound did not have any vir gene inducing property. CONCLUSIONS We report a one pot autoclave process for the synthesis of 5-oxo proline and α-amino glutarimide from L-glutamine. Xenobiotic detoxifying property of α-amino glutarimide is also proposed.
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Affiliation(s)
- Indra Sandal
- Center for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA-24061, USA
| | - Amita Bhattacharya
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Uksha Saini
- Department of Biotechnology, College of Life Sciences, Bowling Green State University, Bowling Green, Ohio, USA
| | - Devinder Kaur
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Shveta Sharma
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Ashu Gulati
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Jonnala K Kumar
- Central Institute of Medicinal and Aromatic Plants, Resource Centre, Boduppal, Hyderabad 500039 (A.P.), India
| | - Neeraj Kumar
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Jyotsna Dayma
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Pralay Das
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Bikram Singh
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
| | - Paramvir S Ahuja
- CSIR-Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur-176061, H. P. India
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Agrobacterium-Mediated Silencing of Caffeine Synthesis through Root Transformation in Camellia sinensis L. Mol Biotechnol 2010; 48:235-43. [DOI: 10.1007/s12033-010-9364-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mohanpuria P, Kumar V, Yadav SK. Tea caffeine: Metabolism, functions, and reduction strategies. Food Sci Biotechnol 2010. [DOI: 10.1007/s10068-010-0041-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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