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Two Foreign Antimicrobial Peptides Expressed in the Chloroplast of Porphyridium purpureum Possessed Antibacterial Properties. Mar Drugs 2022; 20:md20080484. [PMID: 36005487 PMCID: PMC9409725 DOI: 10.3390/md20080484] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 07/23/2022] [Accepted: 07/25/2022] [Indexed: 12/10/2022] Open
Abstract
To solve the problem of antibiotic abuse in aquaculture and to utilize the application potential of antimicrobial peptides (AMPs), a chloroplast transformation system of Porphyridium purpureum was successfully constructed for effectively expressing two exogenous AMPs. The endogenous fragments of 16S rDNA/trnA-23S rDNA were used as flanking fragments for the homologous recombination in the chloroplast genome. Two AMPs encoded by the transformation vector were controlled by the native promoter psbB in a polycistron. The plasmids were transferred into P. purpureum via particle bombardment and the transformation vectors were screened using phosphinothricin (bar), a dominant selection marker under the control of the psbA promoter. Subsequently, in the positive transformed colonies, the exogenous fragments were found to be inserted in the flanking fragments directionally as expected and two foreign AMPs were successfully obtained. Finally, two exogenous peptides with antibacterial properties were obtained from the transformed strain. The two AMPs expressed by the transformed strain were shown to have similar inhibitory effects to antibiotics by inhibition tests. This suggested that AMPs can be introduced into aquaculture using baited microalgae, providing new ideas and ways to solve a series of aquaculture diseases caused by bacteria.
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Rascón-Cruz Q, González-Barriga CD, Iglesias-Figueroa BF, Trejo-Muñoz JC, Siqueiros-Cendón T, Sinagawa-García SR, Arévalo-Gallegos S, Espinoza-Sánchez EA. Plastid transformation: Advances and challenges for its implementation in agricultural crops. ELECTRON J BIOTECHN 2021. [DOI: 10.1016/j.ejbt.2021.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Wang K, Gao Z, Wang Y, Meng C, Li J, Qin S, Cui Y. The chloroplast genetic engineering of a unicellular green alga Chlorella vulgaris with two foreign peptides co-expression. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Yarra R. Plastome engineering in vegetable crops: current status and future prospects. Mol Biol Rep 2020; 47:8061-8074. [PMID: 32880066 DOI: 10.1007/s11033-020-05770-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 08/28/2020] [Indexed: 01/12/2023]
Abstract
Plastome (plastid genome) engineering has grown up and got smarter for the transgene expression. Plastid transformation has profound benefits over nuclear transformation, includes a higher level of transgene expression, integration via homologous recombination, transgene containment, lack of gene silencing, and position effect. Substantial and fruitful progress has been achieved in plastome engineering of vegetable crops through the use of improved regeneration/selection procedures, plastid transformation vectors with efficient promoters, and 3/, 5/regulatory sequences. Plastid transformation technology developed for vegetable crops being used as a platform for the production of industrially important proteins and some of the genes of agronomic importance has been stably integrated and expressed in plastome. Although great progress has been accomplished in the plastid transformation of vegetable crops, still it is restricted to few species because of the unavailability of whole plastome sequencing. In this review, the author focus on the technology, progress, and advancements in plastid transformation of vegetable plants such as lettuce, tomato, potato, cabbage, cauliflower, eggplant, carrot, soybean, and bitter melon are reviewed. The conclusions, future prospects, and expansion of plastid transformation technology to other vegetable crops for genetic improvement and production of edible vaccines are proposed.
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Affiliation(s)
- Rajesh Yarra
- Department of Agronomy, University of Florida, IFAS, Gainesville, FL, 32611, USA.
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Wang K, Cui Y, Wang Y, Gao Z, Liu T, Meng C, Qin S. Chloroplast Genetic Engineering of a Unicellular Green Alga Haematococcus pluvialis with Expression of an Antimicrobial Peptide. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2020; 22:572-580. [PMID: 32535692 DOI: 10.1007/s10126-020-09978-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/14/2020] [Indexed: 05/18/2023]
Abstract
The purpose of this study was to express an antimicrobial peptide in the chloroplast to further develop the plastid engineering of H. pluvialis. Homologous targeting of the 16S-trnI/trnA-23S region and four endogenous regulatory elements, including the psbA promoter, rbcL promoter, rbcL terminator, and psbA terminator in H. pluvialis, were performed to construct a chloroplast transformation vector for H. pluvialis. The expression of codon-optimized antimicrobial peptide piscidin-4 gene (ant1) and selection marker gene (bar, biolaphos resistance gene) in the chloroplast of H. pluvialis was controlled by the rbcL promoter and psbA promoter, respectively. Upon biolistic transformation and selection with phosphinothricin, integration and expression of ant1 in the chloroplast genome were detected using polymerase chain reaction (PCR), southern blotting, and western blotting. Using this method, we successfully expressed antimicrobial peptide piscidin-4 in H. pluvialis. Hence, our results showed H. pluvialis promises as a platform for expressing recombinant proteins for biotechnological applications, which will further contribute to promoting genetic engineering improvement of this strain.
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Affiliation(s)
- Kang Wang
- School of Life Sciences, Shandong University of Technology, Zibo, 255049, Shandong Province, China
| | - Yulin Cui
- Key Laboratory of Coastal Biology and Biological Resource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Yinchu Wang
- Key Laboratory of Coastal Biology and Biological Resource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Zhengquan Gao
- School of Life Sciences, Shandong University of Technology, Zibo, 255049, Shandong Province, China
| | - Tianzhong Liu
- Microalgal Biotechnology Group, CAS key Laboratory of Biofuels and Shandong Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and bioprocess technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Chunxiao Meng
- School of Life Sciences, Shandong University of Technology, Zibo, 255049, Shandong Province, China.
| | - Song Qin
- Key Laboratory of Coastal Biology and Biological Resource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China.
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Plastid Transformation: How Does it Work? Can it Be Applied to Crops? What Can it Offer? Int J Mol Sci 2020; 21:ijms21144854. [PMID: 32659946 PMCID: PMC7402345 DOI: 10.3390/ijms21144854] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/04/2020] [Accepted: 07/05/2020] [Indexed: 12/31/2022] Open
Abstract
In recent years, plant genetic engineering has advanced agriculture in terms of crop improvement, stress and disease resistance, and pharmaceutical biosynthesis. Cells from land plants and algae contain three organelles that harbor DNA: the nucleus, plastid, and mitochondria. Although the most common approach for many plant species is the introduction of foreign DNA into the nucleus (nuclear transformation) via Agrobacterium- or biolistics-mediated delivery of transgenes, plastid transformation offers an alternative means for plant transformation. Since there are many copies of the chloroplast genome in each cell, higher levels of protein accumulation can often be achieved from transgenes inserted in the chloroplast genome compared to the nuclear genome. Chloroplasts are therefore becoming attractive hosts for the introduction of new agronomic traits, as well as for the biosynthesis of high-value pharmaceuticals, biomaterials and industrial enzymes. This review provides a comprehensive historical and biological perspective on plastid transformation, with a focus on current and emerging approaches such as the use of single-walled carbon nanotubes (SWNTs) as DNA delivery vehicles, overexpressing morphogenic regulators to enhance regeneration ability, applying genome editing techniques to accelerate double-stranded break formation, and reconsidering protoplasts as a viable material for plastid genome engineering, even in transformation-recalcitrant species.
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Arévalo-Gallegos S, Varela-Rodríguez H, Lugo-Aguilar H, Siqueiros-Cendón TS, Iglesias-Figueroa BF, Espinoza-Sánchez EA, Aguado-Santacruz GA, Rascón-Cruz Q. Transient expression of a green fluorescent protein in tobacco and maize chloroplast. ELECTRON J BIOTECHN 2020. [DOI: 10.1016/j.ejbt.2020.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Kota S, Lakkam R, Kasula K, Narra M, Qiang H, Rao Allini V, Zanmin H, Abbagani S. Construction of a species-specific vector for improved plastid transformation efficiency in Capsicum annuum L. 3 Biotech 2019; 9:226. [PMID: 31139541 DOI: 10.1007/s13205-019-1747-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/08/2019] [Indexed: 11/26/2022] Open
Abstract
In the present study, we focused on designing a species-specific chloroplast vector for Capsicum annuum L. and finding out its transformation efficiency compared to a heterologous vector. The plastid transformation vector (CaIA) was designed to target homologous regions trnA and trnI of IR region. A selectable marker gene aadA, whose expression is controlled by psbA promoter and terminator, was cloned between two flanking regions. A heterologous vector pRB95, which targets trnfM and trnG of LSC region along with aadA driven by rrn promoter and psbA terminator, was also used for developing plastid transformation in Capsicum. Cotyledonary explants were bombarded with stabilized biolistic parameters: 900 psi pressure and 9 cm flight distance, and optimized regeneration protocol (0.7 mg/L TDZ + 0.2 mg/L IAA) was used to obtain transplastomic lines on selection medium (300 mg/L spectinomycin). The aadA integration and homoplasmy were confirmed by obtaining 1.2 and 3.7 kb amplicons in CaIA transformants and subsequently verified by Southern blotting, whereas in pRB95 transformants, integration was confirmed by PCR with 1.45 kb and 255 bp amplicons corresponding to aadA integration and flanks, respectively. The transformation efficiencies attained with two plastid vectors were found to be 20%, i.e., 10 transplastomic lines in 50 bombarded plates, with CaIA and 2%, i.e., 1 transplastomic line in 50 bombarded plates, with heterologous pRB95, respectively.
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Affiliation(s)
- Srinivas Kota
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
- 2Institute of Genetics and Developmental Biology, Beijing, China
| | - Raghuvardhan Lakkam
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Kirnamayee Kasula
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
- 3Department of Biotechnology, Telangana University, Nizamabad, Telangana 503322 India
| | - Muralikrishna Narra
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Hao Qiang
- 2Institute of Genetics and Developmental Biology, Beijing, China
| | - V Rao Allini
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
| | - Hu Zanmin
- 2Institute of Genetics and Developmental Biology, Beijing, China
| | - Sadanandam Abbagani
- 1Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana 506009 India
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