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Lee H. Transgenic Pro-Vitamin A Biofortified Crops for Improving Vitamin A Deficiency and Their Challenges. ACTA ACUST UNITED AC 2017. [DOI: 10.2174/1874331501711010011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Vitamin A Deficiency (VAD) has been a public health problem among children in developing countries. To alleviate VAD, Vitamin A Supplementation (VAS), food fortification, biofortification and nutrition education have been implemented in various degrees of success with their own merits and limits. While VAS is the most widely utilized intervention in developing countries to ease the burden of VAD, some have raised questions on VAS’ effectiveness. Biofortification, often touted as an effective alternative to VAS, has received significant attention. Among the available biofortification methods, adopting transgenic technology has not only facilitated rapid progress in science for enhanced pro-Vitamin A (pVA) levels in target crops, but drawn considerable skepticism in politics for safety issues. Additionally, VAD-afflicted target regions of transgenic pVA crops widely vary in their national stance on Genetically Modified (GM) products, which further complicates crop development and release. This paper briefly reviews VAS and its controversy which partly demanded shifts to food-based VAD interventions, and updates the current status of transgenic pVA crops. Also, this paper presents a framework to provide potential influencers for transgenic pVA crop development under politically challenging climates with GM products. The framework could be applicable to other transgenic micronutrient biofortification.
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Provitamin A biofortification of crop plants: a gold rush with many miners. Curr Opin Biotechnol 2017; 44:169-180. [DOI: 10.1016/j.copbio.2017.02.001] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 01/30/2017] [Accepted: 02/01/2017] [Indexed: 01/11/2023]
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Jiang L, Wang W, Lian T, Zhang C. Manipulation of Metabolic Pathways to Develop Vitamin-Enriched Crops for Human Health. FRONTIERS IN PLANT SCIENCE 2017; 8:937. [PMID: 28634484 PMCID: PMC5460589 DOI: 10.3389/fpls.2017.00937] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 05/19/2017] [Indexed: 05/22/2023]
Abstract
Vitamin deficiencies are major forms of micronutrient deficiencies, and are associated with huge economic losses as well as severe physical and intellectual damages to humans. Much evidence has demonstrated that biofortification plays an important role in combating vitamin deficiencies due to its economical and effective delivery of nutrients to populations in need. Biofortification enables food plants to be enriched with vitamins through conventional breeding and/or biotechnology. Here, we focus on the progress in the manipulation of the vitamin metabolism, an essential part of biofortification, by the genetic modification or by the marker-assisted selection to understand mechanisms underlying metabolic improvement in food plants. We also propose to integrate new breeding technologies with metabolic pathway modification to facilitate biofortification in food plants and, thereby, to benefit human health.
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Affiliation(s)
- Ling Jiang
- Biotechnology Research Institute, Chinese Academy of Agricultural SciencesBeijing, China
- National Key Facility for Crop Gene Resources and Genetic ImprovementBeijing, China
- *Correspondence: Ling Jiang, Chunyi Zhang,
| | - Weixuan Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural SciencesBeijing, China
- National Key Facility for Crop Gene Resources and Genetic ImprovementBeijing, China
| | - Tong Lian
- Biotechnology Research Institute, Chinese Academy of Agricultural SciencesBeijing, China
| | - Chunyi Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural SciencesBeijing, China
- National Key Facility for Crop Gene Resources and Genetic ImprovementBeijing, China
- *Correspondence: Ling Jiang, Chunyi Zhang,
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Abstract
In the past two decades, Chinese scientists have achieved significant progress on three aspects of wheat genetic transformation. First, the wheat transformation platform has been established and optimized to improve the transformation efficiency, shorten the time required from starting of transformation procedure to the fertile transgenic wheat plants obtained as well as to overcome the problem of genotype-dependent for wheat genetic transformation in wide range of wheat elite varieties. Second, with the help of many emerging techniques such as CRISPR/cas9 function of over 100 wheat genes has been investigated. Finally, modern technology has been combined with the traditional breeding technique such as crossing to accelerate the application of wheat transformation. Overall, the wheat end-use quality and the characteristics of wheat stress tolerance have been improved by wheat genetic engineering technique. So far, wheat transgenic lines integrated with quality-improved genes and stress tolerant genes have been on the way of Production Test stage in the field. The debates and the future studies on wheat transformation have been discussed, and the brief summary of Chinese wheat breeding research history has also been provided in this review.
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Flowerika, Alok A, Kumar J, Thakur N, Pandey A, Pandey AK, Upadhyay SK, Tiwari S. Characterization and Expression Analysis of Phytoene Synthase from Bread Wheat (Triticum aestivum L.). PLoS One 2016; 11:e0162443. [PMID: 27695116 PMCID: PMC5047459 DOI: 10.1371/journal.pone.0162443] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 08/23/2016] [Indexed: 02/01/2023] Open
Abstract
Phytoene synthase (PSY) regulates the first committed step of the carotenoid biosynthetic pathway in plants. The present work reports identification and characterization of the three PSY genes (TaPSY1, TaPSY2 and TaPSY3) in wheat (Triticum aestivum L.). The TaPSY1, TaPSY2, and TaPSY3 genes consisted of three homoeologs on the long arm of group 7 chromosome (7L), short arm of group 5 chromosome (5S), and long arm of group 5 chromosome (5L), respectively in each subgenomes (A, B, and D) with a similarity range from 89% to 97%. The protein sequence analysis demonstrated that TaPSY1 and TaPSY3 retain most of conserved motifs for enzyme activity. Phylogenetic analysis of all TaPSY revealed an evolutionary relationship among PSY proteins of various monocot species. TaPSY derived from A and D subgenomes shared proximity to the PSY of Triticum urartu and Aegilops tauschii, respectively. The differential expression of TaPSY1, TaPSY2, and TaPSY3 in the various tissues, seed development stages, and stress treatments suggested their role in plant development, and stress condition. TaPSY3 showed higher expression in all tissues, followed by TaPSY1. The presence of multiple stress responsive cis-regulatory elements in promoter region of TaPSY3 correlated with the higher expression during drought and heat stresses has suggested their role in these conditions. The expression pattern of TaPSY3 was correlated with the accumulation of β-carotene in the seed developmental stages. Bacterial complementation assay has validated the functional activity of each TaPSY protein. Hence, TaPSY can be explored in developing genetically improved wheat crop.
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Affiliation(s)
- Flowerika
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
- Department of Biotechnology, Panjab University, Chandigarh, India-160014
| | - Anshu Alok
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
| | - Jitesh Kumar
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
| | - Neha Thakur
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
| | - Ashutosh Pandey
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
| | - Ajay Kumar Pandey
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
| | | | - Siddharth Tiwari
- National Agri-Food Biotechnology Institute (NABI), Department of Biotechnology, Ministry of Science and Technology (Government of India), C-127, Industrial Area, Phase VIII, S.A.S. Nagar, Mohali, 160071, Punjab, India
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Zhai S, Xia X, He Z. Carotenoids in Staple Cereals: Metabolism, Regulation, and Genetic Manipulation. FRONTIERS IN PLANT SCIENCE 2016; 7:1197. [PMID: 27559339 PMCID: PMC4978713 DOI: 10.3389/fpls.2016.01197] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 07/27/2016] [Indexed: 05/02/2023]
Abstract
Carotenoids play a critical role in animal and human health. Animals and humans are unable to synthesize carotenoids de novo, and therefore rely upon diet as sources of these compounds. However, major staple cereals often contain only small amounts of carotenoids in their grains. Consequently, there is considerable interest in genetic manipulation of carotenoid content in cereal grain. In this review, we focus on carotenoid metabolism and regulation in non-green plant tissues, as well as genetic manipulation in staple cereals such as rice, maize, and wheat. Significant progress has been made in three aspects: (1) seven carotenogenes play vital roles in carotenoid regulation in non-green plant tissues, including 1-deoxyxylulose-5-phosphate synthase influencing isoprenoid precursor supply, phytoene synthase, β-cyclase, and ε-cyclase controlling biosynthesis, 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate reductase and carotenoid cleavage dioxygenases responsible for degradation, and orange gene conditioning sequestration sink; (2) provitamin A-biofortified crops, such as rice and maize, were developed by either metabolic engineering or marker-assisted breeding; (3) quantitative trait loci for carotenoid content on chromosomes 3B, 7A, and 7B were consistently identified, eight carotenogenes including 23 loci were detected, and 10 gene-specific markers for carotenoid accumulation were developed and applied in wheat improvement. A comprehensive and deeper understanding of the regulatory mechanisms of carotenoid metabolism in crops will be beneficial in improving our precision in improving carotenoid contents. Genomic selection and gene editing are emerging as transformative technologies for provitamin A biofortification.
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Affiliation(s)
- Shengnan Zhai
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Xianchun Xia
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
| | - Zhonghu He
- National Wheat Improvement Center, Institute of Crop Science, Chinese Academy of Agricultural SciencesBeijing, China
- International Maize and Wheat Improvement Center, Chinese Academy of Agricultural SciencesBeijing, China
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ULLAH N, ASIF M, BADSHAH H, BASHIR T, MUMTAZ AS. Introgression lines obtained from the cross between Triticum aestivumandTriticum turgidum (durum wheat) as a source of leaf and stripe (yellow)rust resistance genes. Turk J Biol 2016. [DOI: 10.3906/biy-1501-99] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Federico ML, Schmidt MA. Modern Breeding and Biotechnological Approaches to Enhance Carotenoid Accumulation in Seeds. Subcell Biochem 2016; 79:345-58. [PMID: 27485229 DOI: 10.1007/978-3-319-39126-7_13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
There is an increasing demand for carotenoids, which are fundamental components of the human diet, for example as precursors of vitamin A. Carotenoids are also potent antioxidants and their health benefits are becoming increasingly evident. Protective effects against prostate cancer and age-related macular degeneration have been proposed for lycopene and lutein/zeaxanthin, respectively. Additionally, β-carotene, astaxanthin and canthaxanthin are high-value carotenoids used by the food industry as feed supplements and colorants. The production and consumption of these carotenoids from natural sources, especially from seeds, constitutes an important step towards fortifying the diet of malnourished people in developing nations. Therefore, attempts to metabolically manipulate β-carotene production in plants have received global attention, especially after the generation of Golden Rice (Oryza sativa). The endosperms of Golden Rice seeds synthesize and accumulate large quantities of β-carotene (provitamin A), yielding a characteristic yellow color in the polished grains. Classical breeding efforts have also focused in the development of cultivars with elevated seed carotenoid content, with maize and other cereals leading the way. In this communication we will summarize transgenic efforts and modern breeding strategies to fortify various crop seeds with nutraceutical carotenoids.
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Affiliation(s)
- M L Federico
- Genomics and Bioinformatics Unit, Agriaquaculture Nutritional Genomic Center (CGNA), Temuco, Chile
| | - M A Schmidt
- Bio5 Institute and Plant Sciences Department, University of Arizona, Tucson, AZ, 85718, USA.
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Alós E, Rodrigo MJ, Zacarias L. Manipulation of Carotenoid Content in Plants to Improve Human Health. Subcell Biochem 2016; 79:311-43. [PMID: 27485228 DOI: 10.1007/978-3-319-39126-7_12] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Carotenoids are essential components for human nutrition and health, mainly due to their antioxidant and pro-vitamin A activity. Foods with enhanced carotenoid content and composition are essential to ensure carotenoid feasibility in malnourished population of many countries around the world, which is critical to alleviate vitamin A deficiency and other health-related disorders. The pathway of carotenoid biosynthesis is currently well understood, key steps of the pathways in different plant species have been characterized and the corresponding genes identified, as well as other regulatory elements. This enables the manipulation and improvement of carotenoid content and composition in order to control the nutritional value of a number of agronomical important staple crops. Biotechnological and genetic engineering-based strategies to manipulate carotenoid metabolism have been successfully implemented in many crops, with Golden rice as the most relevant example of β-carotene improvement in one of the more widely consumed foods. Conventional breeding strategies have been also adopted in the bio-fortification of carotenoid in staple foods that are highly consumed in developing countries, including maize, cassava and sweet potatoes, to alleviate nutrition-related problems. The objective of the chapter is to summarize major breakthroughs and advances in the enhancement of carotenoid content and composition in agronomical and nutritional important crops, with special emphasis to their potential impact and benefits in human nutrition and health.
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Affiliation(s)
- Enriqueta Alós
- Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Avenida Agustín Escardino 7, 46980, Paterna, Valencia, Spain
| | - Maria Jesús Rodrigo
- Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Avenida Agustín Escardino 7, 46980, Paterna, Valencia, Spain
| | - Lorenzo Zacarias
- Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Avenida Agustín Escardino 7, 46980, Paterna, Valencia, Spain.
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Zeng J, Wang X, Miao Y, Wang C, Zang M, Chen X, Li M, Li X, Wang Q, Li K, Chang J, Wang Y, Yang G, He G. Metabolic Engineering of Wheat Provitamin A by Simultaneously Overexpressing CrtB and Silencing Carotenoid Hydroxylase (TaHYD). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9083-92. [PMID: 26424551 DOI: 10.1021/acs.jafc.5b04279] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Increasing the provitamin A content in staple crops via carotenoid metabolic engineering is one way to address vitamin A deficiency. In this work a combination of methods was applied to specifically increase β-carotene content in wheat by metabolic engineering. Endosperm-specific silencing of the carotenoid hydroxylase gene (TaHYD) increased β-carotene content 10.5-fold to 1.76 μg g(-1) in wheat endosperm. Overexpression of CrtB introduced an additional flux into wheat, accompanied by a β-carotene increase of 14.6-fold to 2.45 μg g(-1). When the "push strategy" (overexpressing CrtB) and "block strategy" (silencing TaHYD) were combined in wheat metabolic engineering, significant levels of β-carotene accumulation were obtained, corresponding to an increase of up to 31-fold to 5.06 μg g(-1). This is the first example of successful metabolic engineering to specifically improve β-carotene content in wheat endosperm through a combination of methods and demonstrates the potential of genetic engineering for specific nutritional enhancement of wheat.
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Affiliation(s)
- Jian Zeng
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Xiatian Wang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Yingjie Miao
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Cheng Wang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Mingli Zang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Xi Chen
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Miao Li
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Xiaoyan Li
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Qiong Wang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Kexiu Li
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Yuesheng Wang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of the Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of the Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology , Wuhan 430074, China
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Saini RK, Nile SH, Park SW. Carotenoids from fruits and vegetables: Chemistry, analysis, occurrence, bioavailability and biological activities. Food Res Int 2015; 76:735-750. [DOI: 10.1016/j.foodres.2015.07.047] [Citation(s) in RCA: 403] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 07/23/2015] [Accepted: 07/31/2015] [Indexed: 11/30/2022]
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Zeng J, Wang C, Chen X, Zang M, Yuan C, Wang X, Wang Q, Li M, Li X, Chen L, Li K, Chang J, Wang Y, Yang G, He G. The lycopene β-cyclase plays a significant role in provitamin A biosynthesis in wheat endosperm. BMC PLANT BIOLOGY 2015; 15:112. [PMID: 25943989 PMCID: PMC4433027 DOI: 10.1186/s12870-015-0514-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/29/2015] [Indexed: 05/04/2023]
Abstract
BACKGROUND Lycopene β-cyclase (LCYB) is a key enzyme catalyzing the biosynthesis of β-carotene, the main source of provitamin A. However, there is no documented research about this key cyclase gene's function and relationship with β-carotene content in wheat. Therefore, the objectives of this study were to clone TaLCYB and characterize its function and relationship with β-carotene biosynthesis in wheat grains. We also aimed to obtain more information about the endogenous carotenoid biosynthetic pathway and thus provide experimental support for carotenoid metabolic engineering in wheat. RESULTS In the present study, a lycopene β-cyclase gene, designated TaLCYB, was cloned from the hexaploid wheat cultivar Chinese Spring. The cyclization activity of the encoded protein was demonstrated by heterologous complementation analysis. The TaLCYB gene was expressed differentially in different tissues of wheat. Although TaLCYB had a higher expression level in the later stages of grain development, the β-carotene content still showed a decreasing tendency. The expression of TaLCYB in leaves was dramatically induced by strong light and the β-carotene content variation corresponded with changes of TaLCYB expression. A post-transcriptional gene silencing strategy was used to down-regulate the expression of TaLCYB in transgenic wheat, resulting in a decrease in the content of β-carotene and lutein, accompanied by the accumulation of lycopene to partly compensate for the total carotenoid content. In addition, changes in TaLCYB expression also affected the expression of several endogenous carotenogenic genes to varying degrees. CONCLUSION Our results suggest that TaLCYB is a genuine lycopene cyclase gene and plays a crucial role in β-carotene biosynthesis in wheat. Our attempt to silence it not only contributes to elucidating the mechanism of carotenoid accumulation in wheat but may also help in breeding wheat varieties with high provitamin A content through RNA interference (RNAi) to block specific carotenogenic genes in the wheat endosperm.
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Affiliation(s)
- Jian Zeng
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Cheng Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Xi Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Mingli Zang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Cuihong Yuan
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Xiatian Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Qiong Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Miao Li
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Xiaoyan Li
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Ling Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Kexiu Li
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Yuesheng Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
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Zhou Y, Zhou H, Lin-Wang K, Vimolmangkang S, Espley RV, Wang L, Allan AC, Han Y. Transcriptome analysis and transient transformation suggest an ancient duplicated MYB transcription factor as a candidate gene for leaf red coloration in peach. BMC PLANT BIOLOGY 2014; 14:388. [PMID: 25551393 PMCID: PMC4302523 DOI: 10.1186/s12870-014-0388-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 12/16/2014] [Indexed: 05/03/2023]
Abstract
BACKGROUND Leaf red coloration is an important characteristic in many plant species, including cultivars of ornamental peach (Prunus persica). Peach leaf color is controlled by a single Gr gene on linkage group 6, with a red allele dominant over the green allele. Here, we report the identification of a candidate gene of Gr in peach. RESULTS The red coloration of peach leaves is due to accumulation of anthocyanin pigments, which is regulated at the transcriptional level. Based on transcriptome comparison between red- and green-colored leaves, an MYB transcription regulator PpMYB10.4 in the Gr interval was identified to regulate anthocyanin pigmentation in peach leaf. Transient expression of PpMYB10.4 in tobacco and peach leaves can induce anthocyain accumulation. Moreover, a functional MYB gene PpMYB10.2 on linkage group 3, which is homologous to PpMYB10.4, is also expressed in both red- and green-colored leaves, but plays no role in leaf red coloration. This suggests a complex mechanism underlying anthocyanin accumulation in peach leaf. In addition, PpMYB10.4 and other anthocyanin-activating MYB genes in Rosaceae responsible for anthocyanin accumulation in fruit are dated to a common ancestor about 70 million years ago (MYA). However, PpMYB10.4 has diverged from these anthocyanin-activating MYBs to generate a new gene family, which regulates anthocyanin accumulation in vegetative organs such as leaves. CONCLUSIONS Activation of an ancient duplicated MYB gene PpMYB10.4 in the Gr interval on LG 6, which represents a novel branch of anthocyanin-activating MYB genes in Rosaceae, is able to activate leaf red coloration in peach.
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Affiliation(s)
- Ying Zhou
- />Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, 430074 Wuhan, People’s Republic of China
| | - Hui Zhou
- />Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, 430074 Wuhan, People’s Republic of China
- />Graduate University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049 People’s Republic of China
| | - Kui Lin-Wang
- />The New Zealand Institute for Plant & Food Research Ltd, (Plant and Food Research), Mt Albert Research Centre, Private Bag 92169, Auckland, New Zealand
| | - Sornkanok Vimolmangkang
- />Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, 430074 Wuhan, People’s Republic of China
- />Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 10330 Bangkok, Thailand
| | - Richard V Espley
- />The New Zealand Institute for Plant & Food Research Ltd, (Plant and Food Research), Mt Albert Research Centre, Private Bag 92169, Auckland, New Zealand
| | - Lu Wang
- />Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, 430074 Wuhan, People’s Republic of China
| | - Andrew C Allan
- />The New Zealand Institute for Plant & Food Research Ltd, (Plant and Food Research), Mt Albert Research Centre, Private Bag 92169, Auckland, New Zealand
- />School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Yuepeng Han
- />Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, 430074 Wuhan, People’s Republic of China
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