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Liu L, Qu J, Wang C, Liu M, Zhang C, Zhang X, Guo C, Wu C, Yang G, Huang J, Yan K, Shu H, Zheng C, Zhang S. An efficient genetic transformation system mediated by Rhizobium rhizogenes in fruit trees based on the transgenic hairy root to shoot conversion. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38491985 DOI: 10.1111/pbi.14328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/21/2024] [Accepted: 02/25/2024] [Indexed: 03/18/2024]
Abstract
Genetic transformation is a critical tool for gene editing and genetic improvement of plants. Although many model plants and crops can be genetically manipulated, genetic transformation systems for fruit trees are either lacking or perform poorly. We used Rhizobium rhizogenes to transfer the target gene into the hairy roots of Malus domestica and Actinidia chinensis. Transgenic roots were generated within 3 weeks, with a transgenic efficiency of 78.8%. Root to shoot conversion of transgenic hairy roots was achieved within 11 weeks, with a regeneration efficiency of 3.3%. Finally, the regulatory genes involved in stem cell activity were used to improve shoot regeneration efficiency. MdWOX5 exhibited the most significant effects, as it led to an improved regeneration efficiency of 20.6% and a reduced regeneration time of 9 weeks. Phenotypes of the overexpression of RUBY system mediated red roots and overexpression of MdRGF5 mediated longer root hairs were observed within 3 weeks, suggesting that the method can be used to quickly screen genes that influence root phenotype scores through root performance, such as root colour, root hair, and lateral root. Obtaining whole plants of the RUBY system and MdRGF5 overexpression lines highlights the convenience of this technology for studying gene functions in whole plants. Overall, we developed an optimized method to improve the transformation efficiency and stability of transformants in fruit trees.
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Affiliation(s)
- Lin Liu
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
- National Engineering Research Center for Apple and Technology Innovation Alliance of Apple Industry, Shandong Agricultural University, Tai'an, China
| | - Jinghua Qu
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Chunyan Wang
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Miao Liu
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Chunmeng Zhang
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Xinyue Zhang
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Cheng Guo
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Changai Wu
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Guodong Yang
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Jinguang Huang
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Kang Yan
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Huairui Shu
- National Engineering Research Center for Apple and Technology Innovation Alliance of Apple Industry, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Chengchao Zheng
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Shizhong Zhang
- College of Life Sciences, Shandong Agricultural University, Tai'an, China
- National Engineering Research Center for Apple and Technology Innovation Alliance of Apple Industry, Shandong Agricultural University, Tai'an, China
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
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Gong J, Chen Y, Xu Y, Gu M, Ma H, Hu X, Li X, Jiao C, Sun X. Tracking organelle activities through efficient and stable root genetic transformation system in woody plants. HORTICULTURE RESEARCH 2024; 11:uhad262. [PMID: 38304333 PMCID: PMC10831326 DOI: 10.1093/hr/uhad262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 12/13/2023] [Indexed: 02/03/2024]
Abstract
Due to the protracted transgenic timeline and low efficiency in stable genetic transformation of woody plants, there has been limited exploration of real-time organelle imaging within stable transgenic woody plant cells. Here, we established an efficient in vivo genetic transformation system for woody plants using an Agrobacterium rhizogenes-mediated approach. This system was successfully validated in multiple perennial woody species. Using citrus as a model, we introduced organelle-targeted fluorescent reporters via genetic transformation and investigated their subcellular localization and dynamics using advanced imaging techniques, such as confocal microscopy and live-cell imaging. Moreover, we subjected transgenic MT-GFP-labeled mitochondria in root cells to stress conditions simulating agricultural adversities faced by fruit crops. The stress-induced experiments revealed notable alterations in mitochondrial morphology. Our study contributes novel insights into membrane trafficking processes, protein localization dynamics, and cellular physiology in woody plants, while also providing stable and efficient genetic transformation methods for perennial woody species.
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Affiliation(s)
- Jinli Gong
- 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, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Yishan Chen
- 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, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Yanna Xu
- 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, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Miaofeng Gu
- 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, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - 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, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xiaoli Hu
- 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, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Xiaolong 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
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Chen Jiao
- Institute of Biotechnology, Zhejiang University, Hangzhou 310058, 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
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
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Liu ZY, Ji JJ, Jiang F, Tian XR, Li JK, Gao JP. Establishment of a genetic transformation system for Codonopsis pilosula callus. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2022; 39:251-257. [PMID: 36349228 PMCID: PMC9592944 DOI: 10.5511/plantbiotechnology.22.0520a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/20/2022] [Indexed: 06/16/2023]
Abstract
Codonopsis pilosula, a traditional Chinese medicinal and edible plant, contains several bioactive components. However, the biosynthetic mechanism is unclear because of the difficulties associated with functional gene analysis. Therefore, it is important to establish an efficient genetic transformation system for gene function analysis. In this study, we established a highly efficient Agrobacterium-mediated callus genetic transformation system for C. pilosula using stems as explants. After being pre-cultured for 3 days, the explants were infected with Agrobacterium tumefaciens strain GV3101 harboring pCAMBIA1381-35S::GUS at an OD600 value of 0.3 for 15 min, followed by co-cultivation on MS induction medium for 1 day and delayed cultivation on medium supplemented with 250 mg l-1 cefotaxime sodium for 12 days. The transformed calli were selected on screening medium supplemented with 250 mg l-1 cefotaxime sodium and 2.0 mg l-1 hygromycin and further confirmed by PCR amplification of the GUS gene and histochemical GUS assay. Based on the optimal protocol, the induction and transformation efficiency of calli reached a maximum of 91.07%. The establishment of a genetic transformation system for C. pilosula calli lays the foundation for the functional analysis of genes related to bioactive components through genetic engineering technology.
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Affiliation(s)
- Zhe-Yu Liu
- School of Pharmaceutical Science, Shanxi Medical University, No. 81, Xinjian South Road, Taiyuan 030001, Shanxi Province, China
| | - Jiao-Jiao Ji
- School of Pharmaceutical Science, Shanxi Medical University, No. 81, Xinjian South Road, Taiyuan 030001, Shanxi Province, China
| | - Feng Jiang
- School of Pharmaceutical Science, Shanxi Medical University, No. 81, Xinjian South Road, Taiyuan 030001, Shanxi Province, China
| | - Xing-Rui Tian
- School of Pharmaceutical Science, Shanxi Medical University, No. 81, Xinjian South Road, Taiyuan 030001, Shanxi Province, China
| | - Jian-Kuan Li
- School of Pharmaceutical Science, Shanxi Medical University, No. 81, Xinjian South Road, Taiyuan 030001, Shanxi Province, China
| | - Jian-Ping Gao
- School of Pharmaceutical Science, Shanxi Medical University, No. 81, Xinjian South Road, Taiyuan 030001, Shanxi Province, China
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Mukul MM, Akter N, Islam MM, Bhuiyan MSH, Mostofa MG, Ghosh RK, Saha CK, Ali MA. Morpho-phenetical study of high yielding tossa jute variety BJRI Tossa Pat 7 (MG-1) for bast fibre yield and qualities. Heliyon 2021; 7:e08129. [PMID: 34693056 PMCID: PMC8515250 DOI: 10.1016/j.heliyon.2021.e08129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/18/2021] [Accepted: 09/30/2021] [Indexed: 11/05/2022] Open
Abstract
Background and aim of the study Tossa jute (Corchorus olitorius) is a natural fibre crop produces good quality fiber having great demand for industrial uses. High yielding tossa jute variety is very important in Bangladesh. Materials and methods Bangladesh Jute Research Institute (BJRI) has developed a new tossa jute variety (BJRI Tossa Pat 7) through pure line selection (PLS) from another pre-released variety named OM-1 during 2017. The new variety was evaluated for fiber yield and attributing phonological traits through comparing with another pre-released variety named BJRI Tossa Pat 5 (O-795) in RCB design at six locations during 2015–2018. Results Distinct morphological traits i.e. ovate lanceolate glossy leaves; full green plant were found in MG-1 and stem & stipule red; ovate lanceolate leaves in O-795. MG-1 showed higher fiber yield (3.39–3.40 t ha−1) where, O-795 showed 3.10–3.22 t ha−1 as means of their maximum performances for three years at both farmers' plots and research fields. MG-1 gave higher plant height, base diameter, fiber yield than O-795 at both research stations and farmers’ fields. Even after sowing at 10–15 March, MG-1 gave late flowering; lower leaf size, leaf angle, green leaf biomass and node number; maximum inter-nodal length, bark diameter, bark thickness and fiber bundle cells; and finally golden bright quality fiber than O-795. If both varieties were sown at 2nd to 3rd week of March, and harvested at 110 days old, MG-1 gave 5–7% higher fiber yield than O-795. Conclusion Undoubtedly, MG-1 is a good tossa jute variety for its fiber yield and quality than pre-released varieties. Recommendation MG-1 having good fiber yield would be used for commercial cultivation by the farmers to contribute to the national economy.
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Affiliation(s)
- Md Mia Mukul
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Nargis Akter
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Mohammad Moinul Islam
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Md Solaiman Hossain Bhuiyan
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Md Golam Mostofa
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Ranjit Kumar Ghosh
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Chandan Kumar Saha
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
| | - Md Abbas Ali
- Breeding Division, Bangladesh Jute Research Institute, Ministry of Agriculture, Manik Mia Avenue, Dhaka 1207, Bangladesh
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Yang J, Yang X, Li B, Lu X, Kang J, Cao X. Establishment of in vitro culture system for Codonopsis pilosula transgenic hairy roots. 3 Biotech 2020; 10:137. [PMID: 32158633 DOI: 10.1007/s13205-020-2130-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 02/11/2020] [Indexed: 01/21/2023] Open
Abstract
The aim of the study was to establish a reliable system of transgenic hairy roots in Codonopsis pilosula through Agrobacterium-mediated genetic transformation. For this, we optimized several steps in the process of A. rhizogenes strain C58C1 mediated hairy root induction, including the most appropriate medium, explant type, time for infection and co-cultivation. We achieved an induction rate of up to 100% when the roots of C. pilosula seedlings were used as explants, infected with A. rhizogenes C58C1 harboring pCAMBIA1305 for 5 min, followed by induction on 1/2MS supplemented with 0.2 mg/L naphthylacetic acid and 200 mg/L cefotaxime sodium. The co-transformed hairy roots were confirmed by PCR amplification of hygromycin phosphotransferase II gene and histochemical GUS assay, and the efficiency of transformation was 70% and 68.3%, respectively, when no hygromycin selection pressure was exerted. To increase biomass production, we excised and self-propagated the transformed hairy roots, which produce saponins. Our successful establishment of an in vitro culture system of transgenic hairy root for this species lays the foundation not only for assessing gene expression and function but also for obtaining high levels of secondary metabolites through genetic engineering technology.
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Affiliation(s)
- Jing Yang
- 1Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, China
| | - Xiaozeng Yang
- 2Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bin Li
- 1Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, China
| | - Xiayang Lu
- 1Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, China
| | - Jiefang Kang
- 1Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, China
| | - Xiaoyan Cao
- 1Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, China
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Bahramnejad B, Naji M, Bose R, Jha S. A critical review on use of Agrobacterium rhizogenes and their associated binary vectors for plant transformation. Biotechnol Adv 2019; 37:107405. [PMID: 31185263 DOI: 10.1016/j.biotechadv.2019.06.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/27/2019] [Accepted: 06/04/2019] [Indexed: 12/21/2022]
Abstract
Agrobacterium rhizogenes, along with A. tumefaciens, has been used to affect genetic transformation in plants for many years. Detailed studies conducted in the past have uncovered the basic mechanism of foreign gene transfer and the implication of Ri/Ti plasmids in this process. A number of reviews exist describing the usage of binary vectors with A. tumefaciens, but no comprehensive account of the numerous binary vectors employed with A. rhizogenes and their successful applications has been published till date. In this review, we recollect a brief history of development of Ri-plasmid/Ri-T-DNA based binary vectors systems and their successful implementation with A. rhizogenes for different applications. The modification of native Ri plasmid to introduce foreign genes followed by development of binary vector using Ri plasmid and how it facilitated rapid and feasible genetic manipulation, earlier impossible with native Ri plasmid, have been discussed. An important milestone was the development of inducible plant expressing promoter systems which made expression of toxic genes in plant systems possible. The successful application of binary vectors in conjunction with A. rhizogenes in gene silencing and genome editing studies which are relatively newer developments, demonstrating the amenability and adaptability of hairy roots systems to make possible studying previously intractable research areas have been summarized in the present review.
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Affiliation(s)
- Bahman Bahramnejad
- Department of Agronomy and Plant Breeding, University of Kurdistan, Sanandaj, Kurdistan 66177-15175, Iran.
| | - Mohammad Naji
- Department of Agronomy and Plant Breeding, University of Kurdistan, Sanandaj, Kurdistan 66177-15175, Iran
| | - Rahul Bose
- Department of Genetics, University of Calcutta, Kolkata 700019, India
| | - Sumita Jha
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700 019, India
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Shirazi Z, Aalami A, Tohidfar M, Sohani MM. Metabolic Engineering of Glycyrrhizin Pathway by Over-Expression of Beta-amyrin 11-Oxidase in Transgenic Roots of Glycyrrhiza glabra. Mol Biotechnol 2018; 60:412-419. [PMID: 29687371 PMCID: PMC7090481 DOI: 10.1007/s12033-018-0082-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Glycyrrhiza glabra is one of the most important and well-known medicinal plants which produces various triterpene saponins such as glycyrrhizin. Beta-amyrin 11-oxidase (CYP88D6) plays a key role in engineering pathway of glycyrrhizin production and converts an intermediated beta-amyrin compound to glycyrrhizin. In this study, pBI121GUS-9:CYP88D6 construct was transferred to G. glabra using Agrobacterium rhizogene ATCC 15834. The quantitation of transgene was measured in putative transgenic hairy roots using qRT-PCR. The amount of glycyrrhizin production was measured by HPLC in transgenic hairy root lines. Gene expression analysis demonstrated that CYP88D6 was over-expressed only in one of transgenic hairy root lines and was reduced in two others. Beta-amyrin 24-hydroxylase (CYP93E6) was significantly expressed in one of the control hairy root lines. The amount of glycyrrhizin metabolite in over-expressed line was more than or similar to that of control hairy root lines. According to the obtained results, it would be recommended that multi-genes of glycyrrhizin biosynthetic pathway be transferred simultaneously to the hairy root in order to increase glycyrrhizin content.
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Affiliation(s)
- Zahra Shirazi
- Department of Biotechnology, Faculty of Agricultural Sciences, University of Guilan, Khalij Fars Highway (5th Kilometer of Ghazvin Road), Rasht, 4199613776, Iran
| | - Ali Aalami
- Department of Biotechnology, Faculty of Agricultural Sciences, University of Guilan, Khalij Fars Highway (5th Kilometer of Ghazvin Road), Rasht, 4199613776, Iran.
| | - Masoud Tohidfar
- Department of Plant Biotechnology, Faculty of Life Science and Biotechnology, Shahid Beheshti University, G.C., Tehran, Iran
| | - Mohammad Mehdi Sohani
- Department of Biotechnology, Faculty of Agricultural Sciences, University of Guilan, Khalij Fars Highway (5th Kilometer of Ghazvin Road), Rasht, 4199613776, Iran
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Das PK, Biswas R, Anjum N, Das AK, Maiti MK. Rice matrix metalloproteinase OsMMP1 plays pleiotropic roles in plant development and symplastic-apoplastic transport by modulating cellulose and callose depositions. Sci Rep 2018; 8:2783. [PMID: 29426868 PMCID: PMC5807377 DOI: 10.1038/s41598-018-20070-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 01/12/2018] [Indexed: 11/12/2022] Open
Abstract
Matrix metalloproteinases (MMPs) are well-known proteolytic enzymes in animal systems and play roles in tissue differentiation, growth, and defence. Although a few plant MMPs have been reported, their exact functions in development and growth remain elusive. In this study, we characterized the promoter and coding sequence of OsMMP1, one of the putative MMP genes in rice (Oryza sativa). The OsMMP1 catalytic domain is structurally similar to human MMPs with respect to cofactor orientation as predicted by homology modeling. Bacterially expressed recombinant OsMMP1 showed protease activity with bovine serum albumin and gelatin as substrates. Analyses of transcript accumulation and promoter-reporter gene expression revealed that OsMMP1 is spatio-temporally expressed in vegetative and reproductive parts of plants. The plasma membrane-localized OsMMP1 protease affected plant development upon heterologous expression in tobacco and endogenous gene silencing in rice. Transgenic tobacco plants expressing OsMMP1 showed enhanced deposition of cellulose and callose, leading to impairment of symplastic and apoplastic translocations. Moreover, transgenic tobacco tissues exhibited tolerance to oxidative stress-inducing agent by confining the area of tissue death owing to callose lining. Collectively, these findings demonstrate the involvement of a plant MMP in growth, organ differentiation, and development in relation to cell wall modification.
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Affiliation(s)
- Prabir Kumar Das
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Rupam Biswas
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Nazma Anjum
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Amit Kumar Das
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Mrinal K Maiti
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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Bhattacharya S, Das N, Maiti MK. Cumulative effect of heterologous AtWRI1 gene expression and endogenous BjAGPase gene silencing increases seed lipid content in Indian mustard Brassica juncea. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 107:204-213. [PMID: 27314514 DOI: 10.1016/j.plaphy.2016.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/10/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
The production of vegetable oil in many countries of the world, including India has not been able to keep pace with the increasing requirement, leading to a very large gap in the demand-supply chain. Thus, there is an urgent need to increase the yield potential of the oilseed crops so as to enhance the storage lipid productivity. The present study describes a novel metabolic engineering ploy involving the constitutive down-regulation of endogenous ADP-glucose pyrophosphorylase (BjAGPase) enzyme and the seed-specific expression of WRINKLED1 transcription factor (AtWRI1) from Arabidopsis thaliana in Indian mustard (Brassica juncea) with an aim to divert the photosynthetically fixed carbon pool from starch to lipid synthesis in the seeds for the enhanced production of storage lipids in the seeds of transgenic mustard plants. The starch content, in both the vegetative leaf and developing seed tissues of the transgenic B. juncea lines exhibited a reduction by about 45-53% compared to the untransformed control, whereas the soluble sugar content was increased by 2.4 and 1.3-fold in the leaf and developing seed tissues, respectively. Consequently, the transgenic lines showed a significant enhancement in total seed lipid content ranging between 7.5 and 16.9%. The results indicate that the adopted metabolic engineering strategy was successful in significantly increasing the seed oil content. Therefore, findings of our research suggest that the metabolic engineering strategy adopted in this study for shifting the anabolic carbon flux from starch synthesis to lipid biosynthesis can be employed for increasing the storage lipid content of seeds in other plant species.
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Affiliation(s)
- Surajit Bhattacharya
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Natasha Das
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Mrinal K Maiti
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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Kuma KM, Lopes-Caitar VS, Romero CCT, Silva SMH, Kuwahara MK, Carvalho MCCG, Abdelnoor RV, Dias WP, Marcelino-Guimarães FC. A high efficient protocol for soybean root transformation by Agrobacterium rhizogenes and most stable reference genes for RT-qPCR analysis. PLANT CELL REPORTS 2015; 34:1987-2000. [PMID: 26232349 DOI: 10.1007/s00299-015-1845-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 07/13/2015] [Accepted: 07/15/2015] [Indexed: 05/10/2023]
Abstract
KEY MESSAGE A 55% transformation efficiency was obtained by our optimized protocol; and we showed that GmELF1 - β and GmELF1 - α are the most stable reference genes for expression analyses under this specific condition. Gene functional analyses are essential to the validation of results obtained from in silico and/or gene-prospecting studies. Genetic transformation methods that yield tissues of transient expression quickly have been of considerable interest to researchers. Agrobacterium rhizogenes-mediated transformation methods, which are employed to generate plants with transformed roots, have proven useful for the study of stress caused by root phytopathogens via gene overexpression and/or silencing. While some protocols have been adapted to soybean plants, transformation efficiencies remain limited; thus, few viable plants are available for performing bioassays. Furthermore, mRNA analyses that employ reverse transcription quantitative polymerase chain reactions (RT-qPCR) require the use of reference genes with stable expression levels across different organs, development steps and treatments. In the present study, an A. rhizogenes-mediated soybean root transformation approach was optimized. The method delivers significantly higher transformation efficiency levels and rates of transformed plant recovery, thus enhancing studies of soybean abiotic conditions or interactions between phytopathogens, such as nematodes. A 55% transformation efficiency was obtained following the addition of an acclimation step that involves hydroponics and different selection processes. The present study also validated the reference genes GmELF1-β and GmELF1-α as the most stable to be used in RT-qPCR analysis in composite plants, mainly under nematode infection.
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Affiliation(s)
- K M Kuma
- Department of Biochemistry and Biotechnology, Universidade Estadual de Londrina, Londrina, Brazil
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | - V S Lopes-Caitar
- Genetics and Molecular Biology Department, Universidade Estadual de Londrina, Londrina, Brazil
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | - C C T Romero
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | - S M H Silva
- Department of Biochemistry and Biotechnology, Universidade Estadual de Londrina, Londrina, Brazil
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | - M K Kuwahara
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | | | - R V Abdelnoor
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | - W P Dias
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil
| | - F C Marcelino-Guimarães
- Brazilian Agricultural Research Corporation (Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA Soybean), Londrina, Brazil.
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11
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Niu X, Qi J, Zhang G, Xu J, Tao A, Fang P, Su J. Selection of reliable reference genes for quantitative real-time PCR gene expression analysis in Jute (Corchorus capsularis) under stress treatments. FRONTIERS IN PLANT SCIENCE 2015; 6:848. [PMID: 26528312 PMCID: PMC4604321 DOI: 10.3389/fpls.2015.00848] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/28/2015] [Indexed: 05/20/2023]
Abstract
To accurately measure gene expression using quantitative reverse transcription PCR (qRT-PCR), reliable reference gene(s) are required for data normalization. Corchorus capsularis, an annual herbaceous fiber crop with predominant biodegradability and renewability, has not been investigated for the stability of reference genes with qRT-PCR. In this study, 11 candidate reference genes were selected and their expression levels were assessed using qRT-PCR. To account for the influence of experimental approach and tissue type, 22 different jute samples were selected from abiotic and biotic stress conditions as well as three different tissue types. The stability of the candidate reference genes was evaluated using geNorm, NormFinder, and BestKeeper programs, and the comprehensive rankings of gene stability were generated by aggregate analysis. For the biotic stress and NaCl stress subsets, ACT7 and RAN were suitable as stable reference genes for gene expression normalization. For the PEG stress subset, UBC, and DnaJ were sufficient for accurate normalization. For the tissues subset, four reference genes TUBβ, UBI, EF1α, and RAN were sufficient for accurate normalization. The selected genes were further validated by comparing expression profiles of WRKY15 in various samples, and two stable reference genes were recommended for accurate normalization of qRT-PCR data. Our results provide researchers with appropriate reference genes for qRT-PCR in C. capsularis, and will facilitate gene expression study under these conditions.
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Affiliation(s)
- Xiaoping Niu
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Jianmin Qi
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry UniversityFuzhou, China
- *Correspondence: Jianmin Qi
| | - Gaoyang Zhang
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry UniversityFuzhou, China
- College of Life Sciences, Shangrao Normal UniversityShangrao, China
| | - Jiantang Xu
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Aifen Tao
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Pingping Fang
- Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry UniversityFuzhou, China
| | - Jianguang Su
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural SciencesChangsha, China
- Jianguang Su
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12
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Huang B, Lin H, Yan C, Qiu H, Qiu L, Yu R. Optimal inductive and cultural conditions of Polygonum multiflorum transgenic hairy roots mediated with Agrobacterium rhizogenes R1601 and an analysis of their anthraquinone constituents. Pharmacogn Mag 2014; 10:77-82. [PMID: 24696550 PMCID: PMC3969664 DOI: 10.4103/0973-1296.126671] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 01/17/2013] [Accepted: 02/07/2014] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Polygonum multiflorum is an important medicinal plant. Hairy roots systems obtained by transforming plant tissues with the natural genetic engineer Agrobacterium rhizogenes can produce valuable biological active substances, which have immense potential in the pharmaceutical industry. OBJECTIVE To optimize the inductive and cultural conditions of P. multiflorum hairy roots and to identify the major active secondary metabolites in hairy roots. MATERIALS AND METHODS P. multiflorum hairy root were mediated with A. rhizogenes R1601 to induce hairy roots. Four combinations, including Murashige-Skoog (MS), 1/2 MS, B5, and White, were investigated to optimize the culture medium. MS medium was selected for the growth measurement. The qualitative and quantitative determinations of free anthraquinone in hairy roots were compared with the calli and aseptic plantlets using high-performance liquid chromatography. RESULTS The inductive rates of hairy roots by leaves were higher than for any other explants. The presence of agropine in the P. multiflorum hairy roots confirmed that they were indeed transgenic. MS medium was the most suitable of the four media for hairy root growth. Meanwhile, the growth kinetics and nutrient consumption results showed that the hairy roots displayed a sigmoidal growth curve and that their optimal inoculation time was 18-21 days. The determination of the anthraquinone constituents indicated that the rhein content of the hairy roots reached 2.495 μg g(-1) and was 2.55-fold higher than that of natural plants. CONCLUSION Transgenic hairy roots of P. multiflorum could be one of the most potent materials for industrial-scale production of bioactive anthraquinone constituents.
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Affiliation(s)
- Bing Huang
- Department of Natural Medicinal Chemistry, College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
| | - Huanjie Lin
- Department of Natural Medicinal Chemistry, College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
| | - Chuanyan Yan
- Department of Natural Medicinal Chemistry, College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
| | - Hongyan Qiu
- Department of Natural Medicinal Chemistry, College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
| | - Lipeng Qiu
- Biotechnology Institute of Chinese Materia Medica, Jinan University, Guangzhou, China
| | - Rongmin Yu
- Biotechnology Institute of Chinese Materia Medica, Jinan University, Guangzhou, China
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13
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Sharafi A, Hashemi Sohi H, Mousavi A, Azadi P, Dehsara B, Hosseini Khalifani B. Enhanced morphinan alkaloid production in hairy root cultures of Papaver bracteatum by over-expression of salutaridinol 7-o-acetyltransferase gene via Agrobacterium rhizogenes mediated transformation. World J Microbiol Biotechnol 2013; 29:2125-31. [PMID: 23681746 DOI: 10.1007/s11274-013-1377-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 05/10/2013] [Indexed: 10/26/2022]
Abstract
Papaver bracteatum is an important medicinal plant valued for its high content of thebaine and an alternative to P. somniferum for benzylisoquinoline alkaloid production. Salutaridinol 7-o-acetyltransferase (SalAT) is a key gene in morphinan alkaloids biosynthesis pathway. Over expression of SalAT gene was used for metabolic engineering in P. bracteatum hairy root cultures. Transcript level of the salutaridinol 7-o-acetyltransferase gene in transgenic hairy root lines increased up to 154 and 128 % in comparison with hairy roots without SalAT over expression and wild type roots, respectively. High performance liquid chromatography analysis showed that the transgenic hairy roots relatively improved levels of thebaine (1.28 % dry weight), codeine (0.02 % dry weight) and morphine (0.03 % dry weight) compared to those hairy roots without SalAT over expression. This suggests that P. bracteatum hairy roots expressing the SalAT gene could be potentially used for the production of valuable morphinan alkaloids.
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Affiliation(s)
- Ali Sharafi
- National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
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14
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Metabolic engineering of morphinan alkaloids by over-expression of codeinone reductase in transgenic hairy roots of Papaver bracteatum, the Iranian poppy. Biotechnol Lett 2012; 35:445-53. [PMID: 23160738 DOI: 10.1007/s10529-012-1080-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 10/31/2012] [Indexed: 10/27/2022]
Abstract
Papaver bracteatum has a high content of thebaine. It is used as an alternative to P. somniferum for the production of benzylisoquinoline alkaloid. Papaver bracteatum was genetically engineered to over-express codeinone reductase gene in hairy root cultures. Transcript level of the codeinone reductase gene in transgenic hairy root lines increased up to ten- and 24-fold in comparison with hairy roots without CodR over-expression and wild type roots, respectively. Codeine was produced at (0.04 % dry wt) and morphine was at (0.28 % dry wt) in the transgenic hairy root lines. Papaver bracteatum hairy roots expressing CodR gene thus have a high potential to produce morphinan alkaloids.
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15
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Spatio-temporal regulation of the OsHFP gene promoter establishes the involvement of this protein in rice anther development. Biochem Biophys Res Commun 2012; 426:280-5. [PMID: 22943852 DOI: 10.1016/j.bbrc.2012.08.088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 08/19/2012] [Indexed: 11/20/2022]
Abstract
Anther development leading to pollen maturation, anther dehiscence and pollen dispersal depends upon the precise timing of programmed cell death (PCD) in specified anther tissues. The PCD necessitates a properly tuned transcriptional regulation of some crucial genes. However, the detailed genetic regulation of this PCD in rice anther is yet to be deciphered. Recently, we have established that the OsHFP, a structurally novel hemopexin fold protein of rice is a flower-specific heme binding protein, and plays a role in chlorophyll degradation. Here, we report the spatio-temporal transcriptional regulation of the OsHFP gene, which is proposed to be involved in anther PCD. The OsHFP was immunodetected in rice anthers, and OsHFP-related proteins were also found to be present in anthers of other monocot (lily) and dicot (tobacco) plant species. Unique cis-acting elements, possibly involved in the activation and anther-specificity of the OsHFP promoter were identified based upon in silico prediction and in planta expression profiling of the reporter gene driven by the OsHFP promoter (2051 bp) and its two deleted versions (1057 bp and 437 bp). The temporal regulation of the OsHFP promoter in different developmental stages of tobacco anther implies the physiological function of this protein in anther PCD.
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Chattopadhyay T, Bhattacharyya S, Das AK, Maiti MK. A structurally novel hemopexin fold protein of rice plays role in chlorophyll degradation. Biochem Biophys Res Commun 2012; 420:862-8. [PMID: 22465006 DOI: 10.1016/j.bbrc.2012.03.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 03/16/2012] [Indexed: 10/28/2022]
Abstract
Proteins containing hemopexin fold domain are suggested to have diverse functions in various living organisms. In order to investigate the structure and function of this type of protein in rice plant (Oryza sativa), the gene encoding a hemopexin fold protein (OsHFP) was cloned, analyzed in silico and characterized. Molecular modeling revealed that the OsHFP is closely related to other hemopexin fold proteins, but is unique with a cylindrical central tunnel as well as extended N- and C-terminal domains. The recombinant OsHFP was found to bind hemin, the oxidized form of heme in vitro. The expression of the single copy OsHFP gene was detected in rice flower buds. Heterologous expression of OsHFP in green leaf tissues resulted in chlorophyll degradation; however, stable expression of OsHFP was observed in transgenic hairy roots, a non-green tissue. The possible role of OsHFP in regulating programmed cell death in anther green tissues of rice is proposed.
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Affiliation(s)
- Tirthartha Chattopadhyay
- Adv. Lab. for Plant Genetic Engineering, Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Aarrouf J, Castro-Quezada P, Mallard S, Caromel B, Lizzi Y, Lefebvre V. Agrobacterium rhizogenes-dependent production of transformed roots from foliar explants of pepper (Capsicum annuum): a new and efficient tool for functional analysis of genes. PLANT CELL REPORTS 2012; 31:391-401. [PMID: 22016085 DOI: 10.1007/s00299-011-1174-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 09/12/2011] [Accepted: 10/06/2011] [Indexed: 05/31/2023]
Abstract
Pepper is known to be a recalcitrant species to genetic transformation via Agrobacterium tumefaciens. A. rhizogenes-mediated transformation offers an alternative and rapid possibility to study gene functions in roots. In our study, we developed a new and efficient system for A. rhizogenes transformation of the cultivated species Capsicum annuum. Hypocotyls and foliar organs (true leaves and cotyledons) of Yolo Wonder (YW) and Criollo de Morelos 334 (CM334) pepper cultivars were inoculated with the two constructs pBIN-gus and pHKN29-gfp of A. rhizogenes strain A4RS. Foliar explants of both pepper genotypes infected by A4RS-pBIN-gus or A4RS-pHKN29-gfp produced transformed roots. Optimal results were obtained using the combination of the foliar explants with A4RS-pHKN29-gfp. 20.5% of YW foliar explants and 14.6% of CM334 foliar explants inoculated with A4RS-pHKN29-gfp produced at least one root expressing uniform green fluorescent protein. We confirmed by polymerase chain reaction the presence of the rolB and gfp genes in the co-transformed roots ensuring that they integrated both the T-DNA from the Ri plasmid and the reporter gene. We also demonstrated that co-transformed roots of YW and CM334 displayed the same resistance response to Phytophthora capsici than the corresponding untransformed roots. Our novel procedure to produce C. annuum hairy roots will thus support the functional analysis of potential resistance genes involved in pepper P. capsici interaction.
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Affiliation(s)
- J Aarrouf
- INRA Avignon, UR 1052, Unité de Génétique et Amélioration des Fruits et Légumes, BP 94, 84143, Montfavet Cedex, France,
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