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Cui Q, Huang J, Wu F, Li DZ, Zheng L, Hu G, Hu S, Zhang L. Biochemical and transcriptomic analyses reveal that critical genes involved in pigment biosynthesis influence leaf color changes in a new sweet osmanthus cultivar 'Qiannan Guifei'. PeerJ 2021; 9:e12265. [PMID: 34707941 PMCID: PMC8504463 DOI: 10.7717/peerj.12265] [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: 05/21/2020] [Accepted: 09/16/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Osmanthus fragrans (Oleaceae) is one of the most important ornamental plant species in China. Many cultivars with different leaf color phenotypes and good ornamental value have recently been developed. For example, a new cultivar 'Qiannan Guifei', presents a rich variety of leaf colors, which change from red to yellow-green and ultimately to green as leaves develop, making this cultivar valuable for landscaping. However, the biochemical characteristics and molecular mechanisms underlying leaf color changes of these phenotypes have not been elucidated. It has been hypothesized that the biosynthesis of different pigments in O. fragrans might change during leaf coloration. Here, we analyzed transcriptional changes in genes involved in chlorophyll (Chl), flavonoid, and carotenoid metabolic pathways and identified candidate genes responsible for leaf coloration in the new cultivar 'Qiannan Guifei'. METHODS Leaf samples were collected from 'Qiannan Guifei' plants at the red (R), yellow-green (YG) and green (G) leaf stages. We compared the different-colored leaves via leaf pigment concentrations, chloroplast ultrastructure, and transcriptomic data. We further analyzed differentially expressed genes (DEGs) involved in the Chl, flavonoid, and carotenoid metabolic pathways. In addition, we used qRT-PCR to validate expression patterns of the DEGs at the three stages. RESULTS We found that, compared with those at the G stage, chloroplasts at the R and YG stages were less abundant and presented abnormal morphologies. Pigment analyses revealed that the leaves had higher flavonoid and anthocyanin levels at the R stage but lower Chl and carotenoid concentrations. Similarly, Chl and carotenoid concentrations were lower at the YG stage than at the G stage. By using transcriptomic sequencing, we further identified 61 DEGs involved in the three pigment metabolic pathways. Among these DEGs, seven structural genes (OfCHS, OfCHI, OfF3H, OfDFR, OfANS, OfUGT andOf3AT) involved in the flavonoid biosynthesis pathway were expressed at the highest level at the R stage, thereby increasing the biosynthesis of flavonoids, especially anthocyanins. Six putativeOfMYB genes, including three flavonoid-related activators and three repressors, were also highly expressed at the R stage, suggesting that they might coordinately regulate the accumulation of flavonoids, including anthocyanins. Additionally, expressions of the Chl biosynthesis-related genes OfHEMA, OfCHLG and OfCAO and the carotenoid biosynthesis-related genes OfHYB and OfZEP were upregulated from the R stage to the G stage, which increased the accumulation of Chl and carotenoids throughout leaf development. In summary, we screened the candidate genes responsible for the leaf color changes of 'Qiannan Guifei', improved current understanding of the regulatory mechanisms underlying leaf coloration and provided potential targets for future leaf color improvement in O. fragrans.
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Affiliation(s)
- Qi Cui
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Junhua Huang
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Fan Wu
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Dong-ze Li
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Liqun Zheng
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Guang Hu
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Shaoqing Hu
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
| | - Lu Zhang
- School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China
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Fruit Colour and Novel Mechanisms of Genetic Regulation of Pigment Production in Tomato Fruits. HORTICULTURAE 2021. [DOI: 10.3390/horticulturae7080259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Fruit colour represents a genetic trait with ecological and nutritional value. Plants mainly use colour to attract animals and favour seed dispersion. Thus, in many species, fruit colour coevolved with frugivories and their preferences. Environmental factors, however, represented other adaptive forces and further diversification was driven by domestication. All these factors cooperated in the evolution of tomato fruit, one of the most important in human nutrition. Tomato phylogenetic history showed two main steps in colour evolution: the change from green-chlorophyll to red-carotenoid pericarp, and the loss of the anthocyanic pigmentation. These events likely occurred with the onset of domestication. Then spontaneous mutations repeatedly occurred in carotenoid and phenylpropanoid pathways, leading to colour variants which often were propagated. Introgression breeding further enriched the panel of pigmentation patterns. In recent decades, the genetic determinants underneath tomato colours were identified. Novel evidence indicates that key regulatory and biosynthetic genes undergo mechanisms of gene expression regulation that are much more complex than what was imagined before: post-transcriptional mechanisms, with RNA splicing among the most common, indeed play crucial roles to fine-tune the expression of this trait in fruits and offer new substrate for the rise of genetic variables, thus providing further evolutionary flexibility to the character.
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Strategies to meet the global demand for natural food colorant bixin: A multidisciplinary approach. J Biotechnol 2021; 338:40-51. [PMID: 34271054 DOI: 10.1016/j.jbiotec.2021.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 06/02/2021] [Accepted: 07/09/2021] [Indexed: 11/23/2022]
Abstract
Bixin is an apocarotenoid derived from Bixa orellana L. well known as a food colorant along with its numerous industrial and therapeutic applications. With the current surge in usage of natural products, bixin has contributed immensely to the world carotenoid market and showcases a spike in its requirement globally. To bridge the gap between bixin availability and utility, owed to its bioactivity and demand as a colouring agent in industries the sustainable production of bixin is critical. Therefore, to meet up this challenge effective use of multidisciplinary strategies is a promising choice to enhance bixin quantity and quality. Here we report, an optimal blend of approaches directed towards manipulation of bixin biosynthesis pathway with an insight into the impact of regulatory mechanisms and environmental dynamics, engineering carotenoid degradation in plants other than annatto, usage of tissue culture techniques supported with diverse elicitations, molecular breeding, application of in silico predictive tools, screening of microbial bio-factories as alternatives, preservation of bixin bioavailability, and promotion of eco-friendly extraction techniques to play a collaborative role in promoting sustainable bixin production.
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Dhar MK, Mishra S, Bhat A, Chib S, Kaul S. Plant carotenoid cleavage oxygenases: structure-function relationships and role in development and metabolism. Brief Funct Genomics 2020; 19:1-9. [PMID: 31875900 DOI: 10.1093/bfgp/elz037] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 12/31/2022] Open
Abstract
A plant communicates within itself and with the outside world by deploying an array of agents that include several attractants by virtue of their color and smell. In this category, the contribution of 'carotenoids and apocarotenoids' is very significant. Apocarotenoids, the carotenoid-derived compounds, show wide representation among organisms. Their biosynthesis occurs by oxidative cleavage of carotenoids, a high-value reaction, mediated by carotenoid cleavage oxygenases or carotenoid cleavage dioxygenases (CCDs)-a family of non-heme iron enzymes. Structurally, this protein family displays wide diversity but is limited in its distribution among plants. Functionally, this protein family has been recognized to offer a role in phytohormones, volatiles and signal production. Further, their wide presence and clade-specific functional disparity demands a comprehensive account. This review focuses on the critical assessment of CCDs of higher plants, describing recent progress in their functional aspects and regulatory mechanisms, domain architecture, classification and localization. The work also highlights the relevant discussion for further exploration of this multi-prospective protein family for the betterment of its functional understanding and improvement of crops.
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Affiliation(s)
- Manoj Kumar Dhar
- Genome Research Laboratory, School of Biotechnology, University of Jammu, Jammu 180006, India
| | - Sonal Mishra
- Genome Research Laboratory, School of Biotechnology, University of Jammu, Jammu 180006, India
| | - Archana Bhat
- Genome Research Laboratory, School of Biotechnology, University of Jammu, Jammu 180006, India
| | - Sudha Chib
- Genome Research Laboratory, School of Biotechnology, University of Jammu, Jammu 180006, India
| | - Sanjana Kaul
- Genome Research Laboratory, School of Biotechnology, University of Jammu, Jammu 180006, India
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Yue J, Wang R, Ma X, Liu J, Lu X, Balaso Thakar S, An N, Liu J, Xia E, Liu Y. Full-length transcriptome sequencing provides insights into the evolution of apocarotenoid biosynthesis in Crocus sativus. Comput Struct Biotechnol J 2020; 18:774-783. [PMID: 32280432 PMCID: PMC7132054 DOI: 10.1016/j.csbj.2020.03.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 03/22/2020] [Accepted: 03/22/2020] [Indexed: 12/31/2022] Open
Abstract
Crocus sativus, containing remarkably amounts of crocin, picrocrocin and safranal, is the source of saffron with tremendous medicinal, economic and cultural importance. Here, we present a high-quality full-length transcriptome of the sterile triploid C. sativus, using the PacBio SMRT sequencing technology. This yields 31,755 high-confidence predictions of protein-coding genes, with 50.1% forming paralogous gene pairs. Analysis on distribution of Ks values suggests that the current genome of C. sativus is probably a product resulting from at least two rounds of whole-genome duplication (WGD) events occurred at ~28 and ~114 million years ago (Mya), respectively. We provide evidence demonstrating that the recent β WGD event confers a major impact on family expansion of secondary metabolite genes, possibly leading to an enhanced accumulation of three distinct compounds: crocin, picrocrocin and safranal. Phylogenetic analysis unravels that the founding member (CCD2) of CCD enzymes necessary for the biosynthesis of apocarotenoids in C. sativus might be evolved from the CCD1 family via the β WGD event. Based on the gene expression profiling, CCD2 is found to be expressed at an extremely high level in the stigma. These findings may shed lights on further genomic refinement of the characteristic biosynthesis pathways and promote germplasm utilization for the improvement of saffron quality.
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Affiliation(s)
- Junyang Yue
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China.,School of Computer and Information, Hefei University of Technology, Hefei 230009, China.,State Key Laboratory of Tea Plant Biology and School of Horticulture, Anhui Agricultural University, Hefei 230036, China
| | - Ran Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xiaojing Ma
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Jiayi Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xiaohui Lu
- College of Information Technology, Jiaxing Vocational Technical College, Jiaxing 314000, China
| | - Sambhaji Balaso Thakar
- State Key Laboratory of Tea Plant Biology and School of Horticulture, Anhui Agricultural University, Hefei 230036, China.,Department of Biotechnology, Shivaji University, Kolhapur 416003, India
| | - Ning An
- School of Computer and Information, Hefei University of Technology, Hefei 230009, China
| | - Jia Liu
- Chongqing Key Laboratory of Economic Plant Biotechnology, College of Landscape Architecture and Life Science, Institute of Special Plants, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Enhua Xia
- State Key Laboratory of Tea Plant Biology and School of Horticulture, Anhui Agricultural University, Hefei 230036, China
| | - Yongsheng Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China.,State Key Laboratory of Tea Plant Biology and School of Horticulture, Anhui Agricultural University, Hefei 230036, China.,Ministry of Education Key Laboratory for Bio-resource and Eco-environment, College of Life Science, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610064, China
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Jeong H, Kang M, Jung A, Han K, Lee J, Jo J, Lee H, An J, Kim S, Kang B. Single-molecule real-time sequencing reveals diverse allelic variations in carotenoid biosynthetic genes in pepper (Capsicum spp.). PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1081-1093. [PMID: 30467964 PMCID: PMC6523600 DOI: 10.1111/pbi.13039] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/28/2018] [Accepted: 11/03/2018] [Indexed: 05/03/2023]
Abstract
The diverse colours of mature pepper (Capsicum spp.) fruit result from the accumulation of different carotenoids. The carotenoid biosynthetic pathway has been well elucidated in Solanaceous plants, and analysis of candidate genes involved in this process has revealed variations in carotenoid biosynthetic genes in Capsicum spp. However, the allelic variations revealed by previous studies could not fully explain the variation in fruit colour in Capsicum spp. due to technical difficulties in detecting allelic variation in multiple candidate genes in numerous samples. In this study, we uncovered allelic variations in six carotenoid biosynthetic genes, including phytoene synthase (PSY1, PSY2), lycopene β-cyclase, β-carotene hydroxylase, zeaxanthin epoxidase and capsanthin-capsorubin synthase (CCS) genes, in 94 pepper accessions by single-molecule real-time (SMRT) sequencing. To investigate the relationship between allelic variations in the candidate genes and differences in fruit colour, we performed ultra-performance liquid chromatography analysis using 43 accessions representing each allelic variation. Different combinations of dysfunctional mutations in PSY1 and CCS could explain variation in the compositions and levels of carotenoids in the accessions examined in this study. Our results demonstrate that SMRT sequencing technology can be used to rapidly identify allelic variation in target genes in various germplasms. The newly identified allelic variants will be useful for pepper breeding and for further analysis of carotenoid biosynthesis pathways.
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Affiliation(s)
- Hyo‐Bong Jeong
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Min‐Young Kang
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Ayoung Jung
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Koeun Han
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Joung‐Ho Lee
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Jinkwan Jo
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Hea‐Young Lee
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Jong‐Wook An
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
| | - Suna Kim
- Food and Nutrition in Home EconomicsKorea National Open UniversitySeoulKorea
| | - Byoung‐Cheorl Kang
- Department of Plant SciencePlant Genomics & Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoulKorea
- Crop Biotechnology Institute/GreenBio Science and TechnologySeoul National UniversitySeoulKorea
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Shen YH, Yang FY, Lu BG, Zhao WW, Jiang T, Feng L, Chen XJ, Ming R. Exploring the differential mechanisms of carotenoid biosynthesis in the yellow peel and red flesh of papaya. BMC Genomics 2019; 20:49. [PMID: 30651061 PMCID: PMC6335806 DOI: 10.1186/s12864-018-5388-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
Background Red-fleshed papaya is a good material to study the different carotenoids accumulation mechanism in the peel and flesh. Although the peel and flesh of papaya closely integrated into one body, the flesh coloration changing from white to red, while the exocarp coloration changing from green to yellow. In this study, the major carotenoids accumulation and the expression patterns of key carotenoid biosynthesis pathway genes in the process of papaya fruit ripening were studied, and the carotenoid biosynthetic pathways in the yellow peel and red flesh of papaya were investigated. Results The carotenoid composition in papaya flesh and peel were different. The major carotenoids were lutein and β-carotene in the peel, while lycopene in the flesh. The accumulation of carotenoids, including lycopene, β-carotene, and β-cryptoxanthin were considered to cause the orange-red color of papaya cv. ‘Daqing No.10’ flesh. The color of peel changed from green to yellow because of the fast degradation of chlorophyll and the appearance of carotenoids such as lutein and β-carotene. Thirteen genes that encode enzymes in the carotenoid biosynthetic pathway were detected in papaya fruit transcriptome: two phytoene synthase (PSY1, PSY2), two phytoene desaturase (PDS1, PDS2), one ζ-carotene desaturase (ZDS), four lycopene cyclase (CYCB, LCYB1, LCYB2, LCYE), one β-carotene hydroxylase (CHYB), one carotene ε-monooxygenase (LUT1), one violaxanthin de-epoxidase (VDE), and one zeaxanthin epoxidase (ZEP). The results of RNA-Seq and RT-qPCR showed the expression of carotenoid biosynthetic pathway genes was consistent with the change of carotenoid content. Carotenoid biosynthetic pathways in the yellow peel and red flesh of papaya were analysed based on the major carotenoids accumulation and the expression patterns of key carotenoid biosynthesis pathway genes. There was only a β-branch of carotenoid biosynthesis in the flesh of papaya, while there were both α- and β-branch of carotenoid biosynthesis in papaya peel. In the process of papaya fruit ripening, the α-branch was inhibited and the β-branch was enhanced in the peel. Conclusions The differential carotenoid accumulation and biosynthesis pathway genes expression in peel and flesh, lay a foundation for further study and provide further insights to control fruit color and improve fruit quality and appearance. Electronic supplementary material The online version of this article (10.1186/s12864-018-5388-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yan Hong Shen
- College of Horticulture Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, 066004, Hebei, China. .,College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
| | - Fei Ying Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Bing Guo Lu
- College of Life Science, Fujian Normal University, Fuzhou, 350117, Fujian, China
| | - Wan Wan Zhao
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Tao Jiang
- College of Horticulture Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, 066004, Hebei, China
| | - Li Feng
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Xiao Jing Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Ray Ming
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China. .,Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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Biosynthesis and biomedical perspectives of carotenoids with special reference to human health-related applications. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2018.11.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Lasekan O, Hussein FK. Classification of different pineapple varieties grown in Malaysia based on volatile fingerprinting and sensory analysis. Chem Cent J 2018; 12:140. [PMID: 30569201 PMCID: PMC6768132 DOI: 10.1186/s13065-018-0505-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 11/27/2018] [Indexed: 11/16/2022] Open
Abstract
Background Pineapple is highly relished for its attractive sweet flavour and it is widely consumed in both fresh and canned forms. Pineapple flavour is a blend of a number of volatile and non-volatile compounds that are present in small amounts and in complex mixtures. The aroma compounds composition may be used for purposes of quality control as well as for authentication and classification of pineapple varieties. Results The key volatile compounds and aroma profile of six pineapple varieties grown in Malaysia were investigated by gas chromatography–olfactometry (GC-O), gas-chromatography–mass spectrometry and qualitative descriptive sensory analysis. A total of 59 compounds were determined by GC-O and aroma extract dilution analysis. Among these compounds, methyl-2-methylbutanoate, methyl hexanoate, methyl-3-(methylthiol)-propanoate, methyl octanoate, 2,5-dimethyl-4-methoxy-3(2H)-furanone, δ-octalactone, 2-methoxy-4-vinyl phenol, and δ-undecalactone contributed greatly to the aroma quality of the pineapple varieties, due to their high flavour dilution factor. The aroma of the pineapples was described by seven sensory terms as sweet, floral, fruity, fresh, green, woody and apple-like. Conclusion Inter-relationship between the aroma-active compounds and the pineapples revealed that ‘Moris’ and ‘MD2’ covaried majorly with the fruity esters, and the other varieties correlated with lesser numbers of the fruity esters. Hierarchical cluster analysis (HCA) was used to establish similarities among the pineapples and the results revealed three main groups of pineapples.
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Affiliation(s)
- Ola Lasekan
- Department of Food Technology, University Putra Malaysia, 43400 UPM, Serdang, Malaysia.
| | - Fatma Khalifa Hussein
- Department of Food Technology, University Putra Malaysia, 43400 UPM, Serdang, Malaysia
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Colasuonno P, Marcotuli I, Lozito ML, Simeone R, Blanco A, Gadaleta A. Characterization of Aldehyde Oxidase (AO) Genes Involved in the Accumulation of Carotenoid Pigments in Wheat Grain. FRONTIERS IN PLANT SCIENCE 2017; 8:863. [PMID: 28596779 PMCID: PMC5443152 DOI: 10.3389/fpls.2017.00863] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/09/2017] [Indexed: 05/25/2023]
Abstract
Aldehyde Oxidase (AO) enzyme (EC 1.2.3.1) catalyzes the final steps of carotenoid catabolism and it is a key enzyme in the abscisic acid (ABA) biosynthesis. AO isoforms are located in the cytosolic compartment of tissues in many plants, where induce the oxidation of aldehydes into carboxylic acid, and in addition, catalyze the hydroxylation of some heterocycles. The goal of the present study was to characterize the AO genes involved in the accumulation of carotenoid pigments in wheat grain, an important quantitative trait controlled by multiple genes. The cDNAs corresponding to the four AO isoforms from Arabidopsis thaliana and five AO isoforms from Brachypodium distachyon were used as query in 454 sequence assemblies data for Triticum aestivum cv. Chinese Spring (https://urgi.versailles.inra.fr/blast/blast.php) to obtain the partial or whole orthologous wheat AO sequences. Three wheat isoforms, designated AO1, AO2, and AO3 were located on the chromosome groups 2, 5, and 7, respectively, and mapped on two consensus wheat maps by SNP markers located within the AO gene sequences. To validate the possible relationships between AO3 genes and carotenoid accumulation in wheat, the expression levels of AO-A3 and AO-B3 gene were determined during the kernel maturation stage of two durum wheat cultivars, Ciccio and Svevo, characterized by a low and high carotenoid content, respectively. Different AO-A3 gene expression values were observed between the two cultivars indicating that the AO-A3 allele present in Ciccio was more active in carotenoid degradation. A gene marker was developed and can be used for marker-assisted selection in wheat breeding programs.
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Affiliation(s)
- Pasqualina Colasuonno
- Department of Agricultural and Environmental Science, University of Bari Aldo MoroBari, Italy
| | - Ilaria Marcotuli
- Department of Agricultural and Environmental Science, University of Bari Aldo MoroBari, Italy
| | - Maria L. Lozito
- Department of Soil, Plant and Food Sciences, University of Bari Aldo MoroBari, Italy
| | - Rosanna Simeone
- Department of Soil, Plant and Food Sciences, University of Bari Aldo MoroBari, Italy
| | - Antonio Blanco
- Department of Soil, Plant and Food Sciences, University of Bari Aldo MoroBari, Italy
| | - Agata Gadaleta
- Department of Agricultural and Environmental Science, University of Bari Aldo MoroBari, Italy
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Cataldo VF, López J, Cárcamo M, Agosin E. Chemical vs. biotechnological synthesis of C13-apocarotenoids: current methods, applications and perspectives. Appl Microbiol Biotechnol 2016; 100:5703-18. [PMID: 27154347 DOI: 10.1007/s00253-016-7583-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/23/2016] [Accepted: 04/26/2016] [Indexed: 11/30/2022]
Abstract
Apocarotenoids are natural compounds derived from the oxidative cleavage of carotenoids. Particularly, C13-apocarotenoids are volatile compounds that contribute to the aromas of different flowers and fruits and are highly valued by the Flavor and Fragrance industry. So far, the chemical synthesis of these terpenoids has dominated the industry. Nonetheless, the increasing consumer demand for more natural and sustainable processes raises an interesting opportunity for bio-production alternatives. In this regard, enzymatic biocatalysis and metabolically engineered microorganisms emerge as attractive biotechnological options. The present review summarizes promising bioengineering approaches with regard to chemical production methods for the synthesis of two families of C13-apocarotenoids: ionones/dihydroionones and damascones/damascenone. We discuss each method and its applicability, with a thorough comparative analysis for ionones, focusing on the production process, regulatory aspects, and sustainability.
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Affiliation(s)
- Vicente F Cataldo
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile
| | - Javiera López
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile
| | - Martín Cárcamo
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile
| | - Eduardo Agosin
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile.
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Gao L, Zhao W, Qu H, Wang Q, Zhao L. The yellow-fruited tomato 1 (yft1) mutant has altered fruit carotenoid accumulation and reduced ethylene production as a result of a genetic lesion in ETHYLENE INSENSITIVE2. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2016; 129:717-728. [PMID: 26743523 DOI: 10.1007/s00122-015-2660-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 12/14/2015] [Indexed: 05/16/2023]
Abstract
The isolated yft1 allele controls the formation of fruit color in n3122 via the regulation of response to ethylene, carotenoid accumulation and chromoplast development. Fruit color is one of the most important quality traits of tomato (Solanum lycopersicum) and is closely associated with both nutritional and market value. In this study, we characterized a tomato fruit color mutant n3122, named as yellow-fruited tomato 1 (yft1), which produces yellow colored mature fruit. Fruit color segregation of the progeny from an intra-specific cross (M82 × n3122) and an inter-specific cross (n3122 × LA1585) revealed that a single recessive nuclear gene determined the yellow fruit phenotype. Through map-based cloning, the yft1 locus was assigned to an 88.2 kb region at the top of chromosome 9 that was annotated as containing 12 genes. Sequencing revealed that one gene, Solyc09g007870, which encodes ETHYLENE INSENSITIVE2 (EIN2), contained two mutations in yft1: a 13 bp deletion and a 573 bp insertion at position -318 bp upstream of the translation initiation site. We detected that EIN2 expression was substantially lower in yft1 than in the red-fruited M82 wild type and that, in addition, carotenoid accumulation was decreased, ethylene synthesis and perception were impaired and chromoplast development was delayed. The results implied that the reduced expression of EIN2 in yft1 leads to suppressed ethylene signaling which results in abnormal carotenoid production.
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Affiliation(s)
- Lei Gao
- Joint Tomato Research Institute, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Plant Biotechnology Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Weihua Zhao
- Joint Tomato Research Institute, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Plant Biotechnology Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Haiou Qu
- Joint Tomato Research Institute, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Plant Biotechnology Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qishan Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lingxia Zhao
- Joint Tomato Research Institute, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
- Plant Biotechnology Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
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13
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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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14
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Abstract
Carotenoids are precursors of carotenoid derived molecules termed apocarotenoids, which include isoprenoids with important functions in plant-environment interactions such as the attraction of pollinators and the defense against pathogens and herbivores. Apocarotenoids also include volatile aromatic compounds that act as repellents, chemoattractants, growth simulators and inhibitors, as well as the phytohormones abscisic acid and strigolactones. In plants, apocarotenoids can be found in several types of plastids (etioplast, leucoplast and chromoplast) and among different plant tissues such as flowers and roots. The structural similarity of some flower and spice isoprenoid volatile organic compounds (β-ionone and safranal) to carotenoids has led to the recent discovery of carotenoid-specific cleavage oxygenases, including carotenoid cleavage dioxygenases and 9-cis-epoxydioxygenases, which tailor and transform carotenoids into apocarotenoids. The great diversity of apocarotenoids is a consequence of the huge amount of carotenoid precursors, the variations in specific cleavage sites and the modifications after cleavage. Lycopene, β-carotene and zeaxanthin are the precursors of the main apocarotenoids described to date, which include bixin, crocin, picrocrocin, abscisic acid, strigolactone and mycorradicin.The current chapter will give rise to an overview of the biosynthesis and function of the most important apocarotenoids in plants, as well as the current knowledge about the carotenoid cleavage oxygenase enzymes involved in these biosynthetic pathways.
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Affiliation(s)
| | - Claudia Stange
- Centro de Biología Molecular Vegetal, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Santiago, Chile.
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15
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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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16
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Rubio-Moraga A, Rambla JL, Fernández-de-Carmen A, Trapero-Mozos A, Ahrazem O, Orzáez D, Granell A, Gómez-Gómez L. New target carotenoids for CCD4 enzymes are revealed with the characterization of a novel stress-induced carotenoid cleavage dioxygenase gene from Crocus sativus. PLANT MOLECULAR BIOLOGY 2014; 86:555-69. [PMID: 25204497 DOI: 10.1007/s11103-014-0250-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 09/03/2014] [Indexed: 05/04/2023]
Abstract
Apocarotenoid compounds play diverse communication functions in plants, some of them being as hormones, pigments and volatiles. Apocarotenoids are the result of enzymatic cleavage of carotenoids catalyzed by carotenoid cleavage dioxygenase (CCD). The CCD4 family is the largest family of plant CCDs, only present in flowering plants, suggesting a functional diversification associated to the adaptation for specific physiological capacities unique to them. In saffron, two CCD4 genes have been previously isolated from the stigma tissue and related with the generation of specific volatiles involved in the attraction of pollinators. The aim of this study was to identify additional CCD4 members associated with the generation of other carotenoid-derived volatiles during the development of the stigma. The expression of CsCCD4c appears to be restricted to the stigma tissue in saffron and other Crocus species and was correlated with the generation of megastigma-4,6,8-triene. Further, CsCCD4c was up-regulated by wounding, heat, and osmotic stress, suggesting an involvement of its apocarotenoid products in the adaptation of saffron to environmental stresses. The enzymatic activity of CsCCD4c was determined in vivo in Escherichia coli and subsequently in Nicotiana benthamiana by analyzing carotenoids by HPLC-DAD and the volatile products by GC/MS. β-Carotene was shown to be the preferred substrate, being cleaved at the 9,10 (9',10') bonds and generating β-ionone, although β-cyclocitral resulting from a 7,8 (7',8') cleavage activity was also detected at lower levels. Lutein, neoxanthin and violaxanthin levels in Nicotiana leaves were markedly reduced when CsCCD4c is over expressed, suggesting that CsCCD4c recognizes these carotenoids as substrates.
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Affiliation(s)
- Angela Rubio-Moraga
- Departamento de Ciencia y Tecnología Agroforestal y Genética, Facultad de Farmacia, Instituto Botánico, Universidad de Castilla-La Mancha, Campus Universitario s/n, 02071, Albacete, Spain
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17
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Jeknić Z, Jeknić S, Jevremović S, Subotić A, Chen THH. Alteration of flower color in Iris germanica L. 'Fire Bride' through ectopic expression of phytoene synthase gene (crtB) from Pantoea agglomerans. PLANT CELL REPORTS 2014; 33:1307-1321. [PMID: 24801678 DOI: 10.1007/s00299-014-1617-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 04/01/2014] [Accepted: 04/04/2014] [Indexed: 06/03/2023]
Abstract
Genetic modulation of the carotenogenesis in I. germanica 'Fire Bride' by ectopic expression of a crtB gene causes several flower parts to develop novel orange and pink colors. Flower color in tall bearded irises (Iris germanica L.) is determined by two distinct biochemical pathways; the carotenoid pathway, which imparts yellow, orange and pink hues and the anthocyanin pathway, which produces blue, violet and maroon flowers. Red-flowered I. germanica do not exist in nature and conventional breeding methods have thus far failed to produce them. With a goal of developing iris cultivars with red flowers, we transformed a pink iris I. germanica, 'Fire Bride', with a bacterial phytoene synthase gene (crtB) from Pantoea agglomerans under the control of the promoter region of a gene for capsanthin-capsorubin synthase from Lilium lancifolium (Llccs). This approach aimed to increase the flux of metabolites into the carotenoid biosynthetic pathway and lead to elevated levels of lycopene and darker pink or red flowers. Iris callus tissue ectopically expressing the crtB gene exhibited a color change from yellow to pink-orange and red, due to accumulation of lycopene. Transgenic iris plants, regenerated from the crtB-transgenic calli, showed prominent color changes in the ovaries (green to orange), flower stalk (green to orange), and anthers (white to pink), while the standards and falls showed no significant differences in color when compared to control plants. HPLC and UHPLC analysis confirmed that the color changes were primarily due to the accumulation of lycopene. In this study, we showed that ectopic expression of a crtB can be used to successfully alter the color of certain flower parts in I. germanica 'Fire Bride' and produce new flower traits.
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Affiliation(s)
- Zoran Jeknić
- Department of Horticulture, Oregon State University, Corvallis, OR, 97331, USA
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18
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El Hadi MAM, Zhang FJ, Wu FF, Zhou CH, Tao J. Advances in fruit aroma volatile research. Molecules 2013; 18:8200-29. [PMID: 23852166 PMCID: PMC6270112 DOI: 10.3390/molecules18078200] [Citation(s) in RCA: 331] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/02/2013] [Accepted: 07/03/2013] [Indexed: 11/16/2022] Open
Abstract
Fruits produce a range of volatile compounds that make up their characteristic aromas and contribute to their flavor. Fruit volatile compounds are mainly comprised of esters, alcohols, aldehydes, ketones, lactones, terpenoids and apocarotenoids. Many factors affect volatile composition, including the genetic makeup, degree of maturity, environmental conditions, postharvest handling and storage. There are several pathways involved in volatile biosynthesis starting from lipids, amino acids, terpenoids and carotenoids. Once the basic skeletons are produced via these pathways, the diversity of volatiles is achieved via additional modification reactions such as acylation, methylation, oxidation/reduction and cyclic ring closure. In this paper, we review the composition of fruit aroma, the characteristic aroma compounds of several representative fruits, the factors affecting aroma volatile, and the biosynthetic pathways of volatile aroma compounds. We anticipate that this review would provide some critical information for profound research on fruit aroma components and their manipulation during development and storage.
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Affiliation(s)
- Muna Ahmed Mohamed El Hadi
- College of Horticulture and Plant Protection, Yangzhou University, Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou 225009, China.
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19
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Wriessnegger T, Pichler H. Yeast metabolic engineering – Targeting sterol metabolism and terpenoid formation. Prog Lipid Res 2013; 52:277-93. [DOI: 10.1016/j.plipres.2013.03.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Revised: 03/26/2013] [Accepted: 03/27/2013] [Indexed: 12/28/2022]
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20
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Carvalho E, Fraser PD, Martens S. Carotenoids and tocopherols in yellow and red raspberries. Food Chem 2013; 139:744-52. [PMID: 23561169 DOI: 10.1016/j.foodchem.2012.12.047] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/24/2012] [Accepted: 12/27/2012] [Indexed: 10/27/2022]
Abstract
The composition of carotenoids, chlorophyll derivatives and tocopherols in raspberries of different varieties, including yellow and red varieties, over different ripening stages has been studied. The profile of pigments in ripening raspberries changes drastically, with a dramatic decrease of β-carotene and chlorophyll derivatives, the xanthophyll lutein has also decreased but not to the same extent. In contrast esterified lutein increased and is present in ripe raspberries esterified with saturated fatty acids with C8-C16 chains. Ripe raspberries contain considerable amounts of free lutein, esterified lutein, and tocopherols (up to 20, 49 and 366 mg/kg dry weight, respectively). The different samples analysed show different contents of carotenoids and tocopherols. Whether the differences arise from the variety or other factors such as the environmental conditions needs to be ascertained but isoprenoids should not be neglected when considering raspberry antioxidant and nutraceutical composition.
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Affiliation(s)
- Elisabete Carvalho
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy.
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21
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Wehrens R, Carvalho E, Masuero D, de Juan A, Martens S. High-throughput carotenoid profiling using multivariate curve resolution. Anal Bioanal Chem 2012; 405:5075-86. [DOI: 10.1007/s00216-012-6555-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 10/29/2012] [Accepted: 11/06/2012] [Indexed: 12/20/2022]
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22
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Carrera J, Fernández del Carmen A, Fernández-Muñoz R, Rambla JL, Pons C, Jaramillo A, Elena SF, Granell A. Fine-tuning tomato agronomic properties by computational genome redesign. PLoS Comput Biol 2012; 8:e1002528. [PMID: 22685389 PMCID: PMC3369923 DOI: 10.1371/journal.pcbi.1002528] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 04/06/2012] [Indexed: 11/18/2022] Open
Abstract
Considering cells as biofactories, we aimed to optimize its internal processes by using the same engineering principles that large industries are implementing nowadays: lean manufacturing. We have applied reverse engineering computational methods to transcriptomic, metabolomic and phenomic data obtained from a collection of tomato recombinant inbreed lines to formulate a kinetic and constraint-based model that efficiently describes the cellular metabolism from expression of a minimal core of genes. Based on predicted metabolic profiles, a close association with agronomic and organoleptic properties of the ripe fruit was revealed with high statistical confidence. Inspired in a synthetic biology approach, the model was used for exploring the landscape of all possible local transcriptional changes with the aim of engineering tomato fruits with fine-tuned biotechnological properties. The method was validated by the ability of the proposed genomes, engineered for modified desired agronomic traits, to recapitulate experimental correlations between associated metabolites.
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Affiliation(s)
- Javier Carrera
- Instituto de Biologa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas-UPV, Valencia, Spain
- Synth-Bio Group, Institute of Systems and Synthetic Biology, Universite d'Evry Val d'Essonne - Genopole - CNRS UPS3201, Evry, France
- * E-mail: (JC); (AG)
| | - Asun Fernández del Carmen
- Instituto de Biologa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas-UPV, Valencia, Spain
| | - Rafael Fernández-Muñoz
- Instituto de Hortofruticultura Subtropical y Mediterranea “La Mayora” (IHSM-UMA-CSIC), Algarrobo-Costa, Malaga, Spain
| | - Jose Luis Rambla
- Instituto de Biologa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas-UPV, Valencia, Spain
| | - Clara Pons
- Instituto de Biologa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas-UPV, Valencia, Spain
| | - Alfonso Jaramillo
- Synth-Bio Group, Institute of Systems and Synthetic Biology, Universite d'Evry Val d'Essonne - Genopole - CNRS UPS3201, Evry, France
| | - Santiago F. Elena
- Instituto de Biologa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas-UPV, Valencia, Spain
- The Santa Fe Institute, Santa Fe, New Mexico, United States of America
| | - Antonio Granell
- Instituto de Biologa Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas-UPV, Valencia, Spain
- * E-mail: (JC); (AG)
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