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Guo S, Zhang M, Feng M, Liu G, Torregrosa L, Tao X, Ren R, Fang Y, Zhang Z, Meng J, Xu T. miR156b-targeted VvSBP8/13 functions downstream of the abscisic acid signal to regulate anthocyanins biosynthesis in grapevine fruit under drought. HORTICULTURE RESEARCH 2024; 11:uhad293. [PMID: 38371638 PMCID: PMC10873574 DOI: 10.1093/hr/uhad293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 12/20/2023] [Indexed: 02/20/2024]
Abstract
Anthocyanins are the primary color components of grapevine berries and wines. In cultivation practices, a moderate water deficit can promote anthocyanin accumulation in red grape skins. Our previous study showed that abscisic acid (ABA) plays a key role in this process. Herein, we identified a microRNA, vv-miR156b, that is generated in grapevine berries in response to drought stress, along with increasing anthocyanin content and biosynthetic structural gene transcripts. In contrast, vv-miR156b short tandem target mimic (STTM) function-loss callus exhibits the opposite phenotype. Results from in vivo and in vitro experiments revealed that the ABA-signaling-regulated transcription factor VvAREB2 binds directly to the ABA-responsive element (ABRE) of the MIR156b promoter and activates miR156b expression. Furthermore, two miR156b downstream targets, VvSBP8 and VvSBP13, exhibited reduced grape anthocyanin content in their overexpressors but there was a contrary result in their CRISPR-edited lines, the decrease in anthocyanin content was rescued in miR156b and SBP8/13 double overexpressors. We further demonstrated that both VvSBP8 and VvSBP13, encoding transcriptional repressors, displayed sufficient ability to interact with VvMYC1 and VvMYBA1, thereby interfering with MYB-bHLH-WD (MBW) repeat transcriptional complex formation, resulting in the repression of anthocyanin biosynthesis. Our findings demonstrate a direct functional relationship between ABA signaling and the miR156-SBP-MBW complex regulatory module in driving drought-induced anthocyanin accumulation in grape berries.
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Affiliation(s)
- Shuihuan Guo
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - Meng Zhang
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mingxin Feng
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Guipeng Liu
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Laurent Torregrosa
- UMR LEPSE, Université de Montpellier , CIRAD, INRAE, Institut Agro, 34060 Montpellier, France
| | - Xiaoqing Tao
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ruihua Ren
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yulin Fang
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhenwen Zhang
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jiangfei Meng
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tengfei Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
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Zhou P, Lei S, Zhang X, Wang Y, Guo R, Yan S, Jin G, Zhang X. Genome sequencing revealed the red-flower trait candidate gene of a peach landrace. HORTICULTURE RESEARCH 2023; 10:uhad210. [PMID: 38023475 PMCID: PMC10681006 DOI: 10.1093/hr/uhad210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023]
Abstract
Peach (Prunus persica) is an economically important fruit crop globally and an excellent material for genomic studies. While considerable progress has been made in unveiling trait-associated genes within cultivars and wild relatives, certain novel genes controlling valuable traits in peach landraces, such as the red-flowering gene, remained unclear. In this study, we sequenced and assembled the diploid genome of the red-flower landrace 'Yingzui' (abbreviated as 'RedY'). Multi-omics profiling of red petals of 'RedY' revealed the intensified red coloration associated with anthocyanins accumulation and concurrent decline in flavonols. This phenomenon is likely attributed to a natural variant of Flavonol Synthase (FLS) harboring a 9-bp exonic insertion. Intriguingly, the homozygous allelic configurations of this FLS variant were only observed in red-flowered peaches. Furthermore, the 9-bp sequence variation tightly associated with pink/red petal color in genome-wide association studies (GWAS) of collected peach germplasm resources. Functional analyses of the FLS variant, purified from procaryotic expression system, demonstrated its diminished enzymatic activity in flavonols biosynthesis, impeccably aligning with the cardinal trait of red flowers. Therefore, the natural FLS variant was proposed as the best candidate gene for red-flowering trait in peach. The pioneering unveiling of the red-flowered peach genome, coupled with the identification of the candidate gene, expanded the knowledge boundaries of the genetic basis of peach traits and provided valuable insights for future peach breeding efforts.
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Affiliation(s)
- Ping Zhou
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
- Research Centre for Engineering Technology of Fujian Deciduous Fruits, Fuzhou 350013, China
| | - Siru Lei
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Xiaodan Zhang
- Boyce Thompson Institute, Cornell University, Ithaca, NY 14853, USA
| | - Yinghao Wang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Rui Guo
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
- Research Centre for Engineering Technology of Fujian Deciduous Fruits, Fuzhou 350013, China
| | - Shaobin Yan
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
- Research Centre for Engineering Technology of Fujian Deciduous Fruits, Fuzhou 350013, China
| | - Guang Jin
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
- Research Centre for Engineering Technology of Fujian Deciduous Fruits, Fuzhou 350013, China
| | - Xingtan Zhang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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Kılıç M, Käpylä V, Gollan PJ, Aro EM, Rintamäki E. PSI Photoinhibition and Changing CO 2 Levels Initiate Retrograde Signals to Modify Nuclear Gene Expression. Antioxidants (Basel) 2023; 12:1902. [PMID: 38001755 PMCID: PMC10669900 DOI: 10.3390/antiox12111902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/10/2023] [Accepted: 10/16/2023] [Indexed: 11/26/2023] Open
Abstract
Photosystem I (PSI) is a critical component of the photosynthetic machinery in plants. Under conditions of environmental stress, PSI becomes photoinhibited, leading to a redox imbalance in the chloroplast. PSI photoinhibition is caused by an increase in electron pressure within PSI, which damages the iron-sulfur clusters. In this study, we investigated the susceptibility of PSI to photoinhibition in plants at different concentrations of CO2, followed by global gene expression analyses of the differentially treated plants. PSI photoinhibition was induced using a specific illumination protocol that inhibited PSI with minimal effects on PSII. Unexpectedly, the varying CO2 levels combined with the PSI-PI treatment neither increased nor decreased the likelihood of PSI photodamage. All PSI photoinhibition treatments, independent of CO2 levels, upregulated genes generally involved in plant responses to excess iron and downregulated genes involved in iron deficiency. PSI photoinhibition also induced genes encoding photosynthetic proteins that act as electron acceptors from PSI. We propose that PSI photoinhibition causes a release of iron from damaged iron-sulfur clusters, which initiates a retrograde signal from the chloroplast to the nucleus to modify gene expression. In addition, the deprivation of CO2 from the air initiated a signal that induced flavonoid biosynthesis genes, probably via jasmonate production.
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Affiliation(s)
| | | | | | | | - Eevi Rintamäki
- Molecular Plant Biology, Department of Life Technologies, University of Turku, 20014 Turku, Finland; (M.K.); (V.K.); (P.J.G.); (E.-M.A.)
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Rajput R, Naik J, Stracke R, Pandey A. Interplay between R2R3 MYB-type activators and repressors regulates proanthocyanidin biosynthesis in banana (Musa acuminata). THE NEW PHYTOLOGIST 2022; 236:1108-1127. [PMID: 35842782 DOI: 10.1111/nph.18382] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
Proanthocyanidins are oligomeric flavonoids that promote plant disease resistance and benefit human health. Banana is one of the world's most extensively farmed crops and its fruit pulp contain proanthocyanidins. However, the transcriptional regulatory network that fine tunes proanthocyanidin biosynthesis in banana remains poorly understood. We characterised two proanthocyanidin-specific R2R3 MYB activators (MaMYBPA1-MaMYBPA2) and four repressors (MaMYBPR1-MaMYBPR4) to elucidate the mechanisms underlying the transcriptional regulation of proanthocyanidin biosynthesis in banana. Heterologous expression of MaMYBPA1 and MaMYBPA2 partially complemented the Arabidopsis thaliana proanthocyanidin-deficient transparent testa2 mutant. MaMYBPA1 and MaMYBPA2 interacted physically with MaMYCs to transactivate anthocyanin synthase, leucoanthocyanidin reductase, and anthocyanidin reductase genes in vitro and form functional MYB-bHLH-WD Repeat (MBW) complexes with MaTTG1 to transactivate these promoters in vivo. Overexpression of MaMYBPAs alone or with MaMYC in banana fruits induced proanthocyanidin accumulation and transcription of proanthocyanidin biosynthesis-related genes. MaMYBPR repressors are also shown to interact with MaMYCs forming repressing MBW complexes, and diminished proanthocyanidin accumulation. Interestingly overexpression of MaMYBPA induces the expression of MaMYBPR, indicating an agile regulation of proanthocyanidin biosynthesis through the formation of competitive MBW complexes. Our results reveal regulatory modules of R2R3 MYB- that fine tune proanthocyanidin biosynthesis and offer possible targets for genetic manipulation for nutritional improvement of banana.
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Affiliation(s)
- Ruchika Rajput
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Jogindra Naik
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Ralf Stracke
- Chair of Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany
| | - Ashutosh Pandey
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
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Biosynthesis and medicinal applications of proanthocyanidins: A recent update. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang B, Yang H, Qu D, Zhu Z, Yang Y, Zhao Z. The MdBBX22-miR858-MdMYB9/11/12 module regulates proanthocyanidin biosynthesis in apple peel. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:1683-1700. [PMID: 35527510 PMCID: PMC9398380 DOI: 10.1111/pbi.13839] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 04/07/2022] [Accepted: 04/28/2022] [Indexed: 05/20/2023]
Abstract
Proanthocyanidins (PAs) have antioxidant properties and are beneficial to human health. The fruit of apple (Malus × domestica Borkh.), especially the peel, is rich in various flavonoids, such as PAs, and thus is an important source of dietary antioxidants. Previous research on the regulation of PAs in apple has mainly focussed on the transcription level, whereas studies conducted at the post-transcriptional level are relatively rare. In this study, we investigated the function of mdm-miR858, a miRNA with multiple functions in plant development, in the peel of apple fruit. We showed that mdm-miR858 negatively regulated PA accumulation by targeting MdMYB9/11/12 in the peel. During fruit development, mdm-miR858 expression was negatively correlated with MdMYB9/11/12 expression and PA accumulation. A 5'-RACE experiment, GUS staining assays and transient luminescent assays indicated that mdm-miR858 cleaved and inhibited the expression of MdMYB9/11/12. Overexpression of mdm-miR858 in apple calli, tobacco and Arabidopsis reduced the accumulation of PAs induced by overexpression of MdMYB9/11/12. Furthermore, we found that MdBBX22 bound to the mdm-miR858 promoter and induced its expression. Overexpression of MdBBX22 induced the expression of mdm-miR858 to inhibit the accumulation of PAs in apple calli overexpressing MdMYB9/11/12. Under light stress, MdBBX22 induced mdm-miR858 expression to inhibit PA accumulation and thereby indirectly enhanced anthocyanin synthesis in the peel. The present results revealed that the MdBBX22-miR858-MdMYB9/11/12 module regulates PA accumulation in apple. The findings provide a reference for further studies of the regulatory mechanism of PA accumulation and the relationship between PAs and anthocyanins.
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Affiliation(s)
- Bo Zhang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Shaanxi Research Center of Apple Engineering and TechnologyYanglingShaanxiChina
| | - Hui‐Juan Yang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Shaanxi Research Center of Apple Engineering and TechnologyYanglingShaanxiChina
| | - Dong Qu
- Shaanxi Key Laboratory Bio‐resourcesCollege of Bioscience and EngineeringShaanxi University of TechnologyHanzhongShaanxiChina
| | - Zhen‐Zhen Zhu
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Shaanxi Research Center of Apple Engineering and TechnologyYanglingShaanxiChina
| | - Ya‐Zhou Yang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Shaanxi Research Center of Apple Engineering and TechnologyYanglingShaanxiChina
| | - Zheng‐Yang Zhao
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Shaanxi Research Center of Apple Engineering and TechnologyYanglingShaanxiChina
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7
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Rajput R, Tyagi S, Naik J, Pucker B, Stracke R, Pandey A. The R2R3-MYB gene family in Cicer arietinum: genome-wide identification and expression analysis leads to functional characterization of proanthocyanidin biosynthesis regulators in the seed coat. PLANTA 2022; 256:67. [PMID: 36038740 DOI: 10.1007/s00425-022-03979-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
We identified 119 typical CaMYB encoding genes and reveal the major components of the proanthocyanidin regulatory network. CaPARs emerged as promising targets for genetic engineering toward improved agronomic traits in C. arietinum. Chickpea (Cicer arietinum) is among the eight oldest crops and has two main types, i.e., desi and kabuli, whose most obvious difference is the color of their seeds. We show that this color difference is due to differences in proanthocyanidin content of seed coats. Using a targeted approach, we performed in silico analysis, metabolite profiling, molecular, genetic, and biochemical studies to decipher the transcriptional regulatory network involved in proanthocyanidin biosynthesis in the seed coat of C. arietinum. Based on the annotated C. arietinum reference genome sequence, we identified 119 typical CaMYB encoding genes, grouped in 32 distinct clades. Two CaR2R3-MYB transcription factors, named CaPAR1 and CaPAR2, clustering with known proanthocyanidin regulators (PARs) were identified and further analyzed. The expression of CaPAR genes correlated well with the expression of the key structural proanthocyanidin biosynthesis genes CaANR and CaLAR and with proanthocyanidin levels. Protein-protein interaction studies suggest the in vivo interaction of CaPAR1 and CaPAR2 with the bHLH-type transcription factor CaTT8. Co-transfection analyses using Arabidopsis thaliana protoplasts showed that the CaPAR proteins form a MBW complex with CaTT8 and CaTTG1, able to activate the promoters of CaANR and CaLAR in planta. Finally, transgenic expression of CaPARs in the proanthocyanidin-deficient A. thaliana mutant tt2-1 leads to complementation of the transparent testa phenotype. Taken together, our results reveal main components of the proanthocyanidin regulatory network in C. arietinum and suggest that CaPARs are relevant targets of genetic engineering toward improved agronomic traits.
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Affiliation(s)
- Ruchika Rajput
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Shivi Tyagi
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Jogindra Naik
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Boas Pucker
- Chair of Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany
- Institute of Plant Biology and Braunschweig Integrated Centre of Systems Biology (BRICS), TU Brunswick, Brunswick, Germany
| | - Ralf Stracke
- Chair of Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany
| | - Ashutosh Pandey
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India.
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Zhang Y, Tan Q, Wang N, Meng X, He H, Wen B, Xiao W, Chen X, Li D, Fu X, Li L. PpMYB52 negatively regulates peach bud break through the gibberellin pathway and through interactions with PpMIEL1. FRONTIERS IN PLANT SCIENCE 2022; 13:971482. [PMID: 36035719 PMCID: PMC9413399 DOI: 10.3389/fpls.2022.971482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Bud dormancy, which enables damage from cold temperatures to be avoided during winter and early spring, is an important adaptive mechanism of deciduous fruit trees to cope with seasonal environmental changes and temperate climates. Understanding the regulatory mechanism of bud break in fruit trees is highly important for the artificial control of bud break and the prevention of spring frost damage. However, the molecular mechanism underlying the involvement of MYB TFs during the bud break of peach is still unclear. In this study, we isolated and identified the PpMYB52 (Prupe.5G240000.1) gene from peach; this gene is downregulated in the process of bud break, upregulated in response to ABA and downregulated in response to GA. Overexpression of PpMYB52 suppresses the germination of transgenic tomato seeds. In addition, Y2H, Bimolecular fluorescence complementation (BiFC) assays verified that PpMYB52 interacts with a RING-type E3 ubiquitin ligase, PpMIEL1, which is upregulated during bud break may positively regulate peach bud break by ubiquitination-mediated degradation of PpMYB52. Our findings are the first to characterize the molecular mechanisms underlying the involvement of MYB TFs in peach bud break, increasing awareness of dormancy-related molecules to avoid bud damage in perennial deciduous fruit trees.
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Affiliation(s)
- Yuzheng Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Qiuping Tan
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Ning Wang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiangguang Meng
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Huajie He
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Binbin Wen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Wei Xiao
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiude Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Dongmei Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiling Fu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Ling Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
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9
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Mora J, Pott DM, Osorio S, Vallarino JG. Regulation of Plant Tannin Synthesis in Crop Species. Front Genet 2022; 13:870976. [PMID: 35586570 PMCID: PMC9108539 DOI: 10.3389/fgene.2022.870976] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022] Open
Abstract
Plant tannins belong to the antioxidant compound family, which includes chemicals responsible for protecting biological structures from the harmful effects of oxidative stress. A wide range of plants and crops are rich in antioxidant compounds, offering resistance to biotic, mainly against pathogens and herbivores, and abiotic stresses, such as light and wound stresses. These compounds are also related to human health benefits, offering protective effects against cardiovascular and neurodegenerative diseases in addition to providing anti-tumor, anti-inflammatory, and anti-bacterial characteristics. Most of these compounds are structurally and biosynthetically related, being synthesized through the shikimate-phenylpropanoid pathways, offering several classes of plant antioxidants: flavonoids, anthocyanins, and tannins. Tannins are divided into two major classes: condensed tannins or proanthocyanidins and hydrolysable tannins. Hydrolysable tannin synthesis branches directly from the shikimate pathway, while condensed tannins are derived from the flavonoid pathway, one of the branches of the phenylpropanoid pathway. Both types of tannins have been proposed as important molecules for taste perception of many fruits and beverages, especially wine, besides their well-known roles in plant defense and human health. Regulation at the gene level, biosynthesis and degradation have been extensively studied in condensed tannins in crops like grapevine (Vitis vinifera), persimmon (Diospyros kaki) and several berry species due to their high tannin content and their importance in the food and beverage industry. On the other hand, much less information is available regarding hydrolysable tannins, although some key aspects of their biosynthesis and regulation have been recently discovered. Here, we review recent findings about tannin metabolism, information that could be of high importance for crop breeding programs to obtain varieties with enhanced nutritional characteristics.
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Affiliation(s)
| | | | | | - José G. Vallarino
- Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora”—Consejo Superior de Investigaciones Científicas-Universidad de Málaga- (IHSM-CSIC-UMA), Málaga, Spain
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10
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Battistoni B, Salazar J, Vega W, Valderrama-Soto D, Jiménez-Muñoz P, Sepúlveda-González A, Ahumada S, Cho I, Gardana CS, Morales H, Peña-Neira Á, Silva H, Maldonado J, González M, Infante R, Pacheco I. An Upgraded, Highly Saturated Linkage Map of Japanese Plum ( Prunus salicina Lindl.), and Identification of a New Major Locus Controlling the Flavan-3-ol Composition in Fruits. FRONTIERS IN PLANT SCIENCE 2022; 13:805744. [PMID: 35310655 PMCID: PMC8931734 DOI: 10.3389/fpls.2022.805744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Japanese plum fruits are rich in phenolic compounds, such as anthocyanins and flavan-3-ols, whose contents vary significantly among cultivars. Catechin (C) and epicatechin (EC) are flavan-3-ol monomers described in the fruits of this species and are associated with bitterness, astringency, antioxidant capacity, and susceptibility to enzymatic mesocarp browning. In this study, we aimed to identify quantitative trait loci (QTL) associated with the content of flavan-3-ol in Japanese plum fruits. We evaluated the content of C and EC in the mesocarp and exocarp of samples from 79 and 64 seedlings of an F1 progeny (<'98-99' × 'Angeleno'>) in the first and second seasons, respectively. We also constructed improved versions of linkage maps from '98-99' and 'Angeleno,' presently called single-nucleotide polymorphisms (SNPs) after mapping the already available GBS reads to Prunus salicina Lindl. cv. 'Sanyueli' v2.0 reference genome. These data allowed for describing a cluster of QTLs in the cultivar, 'Angeleno,' associated with the flavan-3-ol composition of mesocarp and exocarp, which explain up to 100% of the C/EC ratio. Additionally, we developed a C/EC metabolic marker, which was mapped between the markers with the highest log of odds (LOD) scores detected by the QTL analysis. The C/EC locus was located in the LG1, at an interval spanning 0.70 cM at 108.30-108.90 cM. Our results suggest the presence of a novel major gene controlling the preferential synthesis of C or EC in the Japanese plum fruits. This study is a significant advance in understanding the regulation of synthesizing compounds associated with fruit quality, postharvest, and human health promotion.
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Affiliation(s)
- Benjamín Battistoni
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Programa de Doctorado en Ciencias Silvoagropecuarias y Veterinarias, Universidad de Chile, Santiago, Chile
| | - Juan Salazar
- Department of Plant Breeding, Centro de Edafología y Biología Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Murcia, Spain
| | - Wladimir Vega
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Diego Valderrama-Soto
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Pablo Jiménez-Muñoz
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | | | - Sebastián Ahumada
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Isaac Cho
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Claudio Sebastiano Gardana
- Dipartimento di Scienze per gli Alimenti, la Nutrizione, l’Ambiente, Università degli Studi di Milano, Milan, Italy
| | - Héctor Morales
- Departamento de Agroindustria y Enología, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - Álvaro Peña-Neira
- Departamento de Agroindustria y Enología, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - Herman Silva
- Departamento de Producción Agrícola, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - Jonathan Maldonado
- Departamento de Producción Agrícola, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - Mauricio González
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Centre for Genomic Regulation (CGR), Santiago, Chile
| | - Rodrigo Infante
- Departamento de Producción Agrícola, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - Igor Pacheco
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
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11
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Karppinen K, Lafferty DJ, Albert NW, Mikkola N, McGhie T, Allan AC, Afzal BM, Häggman H, Espley RV, Jaakola L. MYBA and MYBPA transcription factors co-regulate anthocyanin biosynthesis in blue-coloured berries. THE NEW PHYTOLOGIST 2021; 232:1350-1367. [PMID: 34351627 DOI: 10.1111/nph.17669] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 08/02/2021] [Indexed: 05/14/2023]
Abstract
The regulatory network of R2R3 MYB transcription factors in anthocyanin biosynthesis is not fully understood in blue-coloured berries containing delphinidin compounds. We used blue berries of bilberry (Vaccinium myrtillus) to comprehensively characterise flavonoid-regulating R2R3 MYBs, which revealed a new type of co-regulation in anthocyanin biosynthesis between members of MYBA-, MYBPA1- and MYBPA2-subgroups. VmMYBA1, VmMYBPA1.1 and VmMYBPA2.2 expression was elevated at berry ripening and by abscisic acid treatment. Additionally, VmMYBA1 and VmMYBPA1.1 expression was strongly downregulated in a white berry mutant. Complementation and transient overexpression assays confirmed VmMYBA1 and VmMYBA2 to induce anthocyanin accumulation. Promoter activation assays showed that VmMYBA1, VmMYBPA1.1 and VmMYBPA2.2 had similar activity towards dihydroflavonol 4-reductase (DFR) and anthocyanidin synthase (ANS), but differential regulation activity for UDP-glucose flavonoid 3-O-glucosyltransferase (UFGT) and flavonoid 3'5'-hydroxylase (F3'5'H) promoters. Silencing of VmMYBPA1.1 in berries led to the downregulation of key anthocyanin and delphinidin biosynthesis genes. Functional analyses of other MYBPA regulators, and a member of novel MYBPA3 subgroup, associated them with proanthocyanidin biosynthesis and F3'5'H expression. The existence of 18 flavonoid-regulating MYBs indicated gene duplication, which may have enabled functional diversification among MYBA, MYBPA1 and MYBPA2 subgroups. Our results provide new insights into the intricate regulation of the complex anthocyanin profile found in blue-coloured berries involving regulation of both cyanidin and delphinidin branches.
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Affiliation(s)
- Katja Karppinen
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9037, Norway
| | - Declan J Lafferty
- The New Zealand Institute for Plant and Food Research Ltd, Palmerston North, 4410, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, 1142, New Zealand
| | - Nick W Albert
- The New Zealand Institute for Plant and Food Research Ltd, Palmerston North, 4410, New Zealand
| | - Nelli Mikkola
- Department of Ecology and Genetics, University of Oulu, Oulu, 90014, Finland
| | - Tony McGhie
- The New Zealand Institute for Plant and Food Research Ltd, Palmerston North, 4410, New Zealand
| | - Andrew C Allan
- School of Biological Sciences, University of Auckland, Auckland, 1142, New Zealand
- The New Zealand Institute for Plant and Food Research Ltd, Auckland, 1025, New Zealand
| | - Bilal M Afzal
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9037, Norway
| | - Hely Häggman
- Department of Ecology and Genetics, University of Oulu, Oulu, 90014, Finland
| | - Richard V Espley
- The New Zealand Institute for Plant and Food Research Ltd, Auckland, 1025, New Zealand
| | - Laura Jaakola
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, 9037, Norway
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, 1431, Norway
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12
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Aničić N, Patelou E, Papanikolaou A, Kanioura A, Valdesturli C, Arapitsas P, Skorić M, Dragićević M, Gašić U, Koukounaras A, Kostas S, Sarrou E, Martens S, Mišić D, Kanellis A. Comparative Metabolite and Gene Expression Analyses in Combination With Gene Characterization Revealed the Patterns of Flavonoid Accumulation During Cistus creticus subsp. creticus Fruit Development. FRONTIERS IN PLANT SCIENCE 2021; 12:619634. [PMID: 33841455 PMCID: PMC8034662 DOI: 10.3389/fpls.2021.619634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Cistus creticus L. subsp. creticus (rockrose) is a shrub widespread in Greece and the Mediterranean basin and has been used in traditional medicine as herb tea for colds, for healing and digestive hitches, for the treatment of maladies, as perfumes, and for other purposes. Compounds from its flavonoid fraction have recently drawn attention due to antiviral action against influenza virus and HIV. Although several bioactive metabolites belonging to this group have been chemically characterized in the leaves, the genes involved in their biosynthesis in Cistus remain largely unknown. Flavonoid metabolism during C. creticus fruit development was studied by adopting comparative metabolomic and transcriptomic approaches. The present study highlights the fruit of C. creticus subsp. creticus as a rich source of flavonols, flavan-3-ols, and proanthocyanidins, all of which displayed a decreasing trend during fruit development. The majority of proanthocyanidins recorded in Cistus fruit are B-type procyanidins and prodelphinidins, while gallocatechin and catechin are the dominant flavan-3-ols. The expression patterns of biosynthetic genes and transcription factors were analyzed in flowers and throughout three fruit development stages. Flavonoid biosynthetic genes were developmentally regulated, showing a decrease in transcript levels during fruit maturation. A high degree of positive correlations between the content of targeted metabolites and the expression of biosynthetic genes indicated the transcriptional regulation of flavonoid biosynthesis during C. creticus fruit development. This is further supported by the high degree of significant positive correlations between the expression of biosynthetic genes and transcription factors. The results suggest that leucoanthocyanidin reductase predominates the biosynthetic pathway in the control of flavan-3-ol formation, which results in catechin and gallocatechin as two of the major building blocks for Cistus proanthocyanidins. Additionally, there is a decline in ethylene production rates during non-climacteric Cistus fruit maturation, which coincides with the downregulation of the majority of flavonoid- and ethylene-related biosynthetic genes and corresponding transcription factors as well as with the decline in flavonoid content. Finally, functional characterization of a Cistus flavonoid hydroxylase (F3'5'H) was performed for the first time.
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Affiliation(s)
- Neda Aničić
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”-National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Efstathia Patelou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antigoni Papanikolaou
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anthi Kanioura
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Camilla Valdesturli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Panagiotis Arapitsas
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Marijana Skorić
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”-National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milan Dragićević
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”-National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Uroš Gašić
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”-National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Athanasios Koukounaras
- Department of Horticulture, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stefanos Kostas
- Department of Horticulture, School of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eirini Sarrou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization - DEMETER, Thessaloniki, Greece
| | - Stefan Martens
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Danijela Mišić
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”-National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Angelos Kanellis
- Group of Biotechnology of Pharmaceutical Plants, Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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13
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Yan H, Pei X, Zhang H, Li X, Zhang X, Zhao M, Chiang VL, Sederoff RR, Zhao X. MYB-Mediated Regulation of Anthocyanin Biosynthesis. Int J Mol Sci 2021; 22:3103. [PMID: 33803587 PMCID: PMC8002911 DOI: 10.3390/ijms22063103] [Citation(s) in RCA: 146] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 11/16/2022] Open
Abstract
Anthocyanins are natural water-soluble pigments that are important in plants because they endow a variety of colors to vegetative tissues and reproductive plant organs, mainly ranging from red to purple and blue. The colors regulated by anthocyanins give plants different visual effects through different biosynthetic pathways that provide pigmentation for flowers, fruits and seeds to attract pollinators and seed dispersers. The biosynthesis of anthocyanins is genetically determined by structural and regulatory genes. MYB (v-myb avian myeloblastosis viral oncogene homolog) proteins are important transcriptional regulators that play important roles in the regulation of plant secondary metabolism. MYB transcription factors (TFs) occupy a dominant position in the regulatory network of anthocyanin biosynthesis. The TF conserved binding motifs can be combined with other TFs to regulate the enrichment and sedimentation of anthocyanins. In this study, the regulation of anthocyanin biosynthetic mechanisms of MYB-TFs are discussed. The role of the environment in the control of the anthocyanin biosynthesis network is summarized, the complex formation of anthocyanins and the mechanism of environment-induced anthocyanin synthesis are analyzed. Some prospects for MYB-TF to modulate the comprehensive regulation of anthocyanins are put forward, to provide a more relevant basis for further research in this field, and to guide the directed genetic modification of anthocyanins for the improvement of crops for food quality, nutrition and human health.
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Affiliation(s)
- Huiling Yan
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
| | - Xiaona Pei
- Harbin Research Institute of Forestry Machinery, State Administration of Forestry and Grassland, Harbin 150086, China;
- Research Center of Cold Temperate Forestry, CAF, Harbin 150086, China
| | - Heng Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
| | - Xiang Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
| | - Xinxin Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
| | - Minghui Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
| | - Vincent L. Chiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA;
| | - Ronald Ross Sederoff
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA;
| | - Xiyang Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (H.Y.); (H.Z.); (X.L.); (X.Z.); (M.Z.); (V.L.C.)
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14
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Cao Y, Jia H, Xing M, Jin R, Grierson D, Gao Z, Sun C, Chen K, Xu C, Li X. Genome-Wide Analysis of MYB Gene Family in Chinese Bayberry ( Morella rubra) and Identification of Members Regulating Flavonoid Biosynthesis. FRONTIERS IN PLANT SCIENCE 2021; 12:691384. [PMID: 34249063 PMCID: PMC8264421 DOI: 10.3389/fpls.2021.691384] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/31/2021] [Indexed: 05/05/2023]
Abstract
Chinese bayberry (Morella rubra), the most economically important fruit tree in the Myricaceae family, is a rich source of natural flavonoids. Recently the Chinese bayberry genome has been sequenced, and this provides an opportunity to investigate the organization and evolutionary characteristics of MrMYB genes from a whole genome view. In the present study, we performed the genome-wide analysis of MYB genes in Chinese bayberry and identified 174 MrMYB transcription factors (TFs), including 122 R2R3-MYBs, 43 1R-MYBs, two 3R-MYBs, one 4R-MYB, and six atypical MYBs. Collinearity analysis indicated that both syntenic and tandem duplications contributed to expansion of the MrMYB gene family. Analysis of transcript levels revealed the distinct expression patterns of different MrMYB genes, and those which may play important roles in leaf and flower development. Through phylogenetic analysis and correlation analyses, nine MrMYB TFs were selected as candidates regulating flavonoid biosynthesis. By using dual-luciferase assays, MrMYB12 was shown to trans-activate the MrFLS1 promoter, and MrMYB39 and MrMYB58a trans-activated the MrLAR1 promoter. In addition, overexpression of 35S:MrMYB12 caused a significant increase in flavonol contents and induced the expression of NtCHS, NtF3H, and NtFLS in transgenic tobacco leaves and flowers and significantly reduced anthocyanin accumulation, resulting in pale-pink or pure white flowers. This indicates that MrMYB12 redirected the flux away from anthocyanin biosynthesis resulting in higher flavonol content. The present study provides valuable information for understanding the classification, gene and motif structure, evolution and predicted functions of the MrMYB gene family and identifies MYBs regulating different aspects of flavonoid biosynthesis in Chinese bayberry.
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Affiliation(s)
- Yunlin Cao
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Huimin Jia
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Mengyun Xing
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Rong Jin
- Agricultural Experiment Station, Zhejiang University, Hangzhou, China
| | - Donald Grierson
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Loughborough, United Kingdom
| | - Zhongshan Gao
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Chongde Sun
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Kunsong Chen
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Changjie Xu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Xian Li
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
- Institute of Fruit Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- *Correspondence: Xian Li,
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15
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Shi L, Chen X, Wang K, Yang M, Chen W, Yang Z, Cao S. MrMYB6 From Chinese Bayberry ( Myrica rubra) Negatively Regulates Anthocyanin and Proanthocyanidin Accumulation. FRONTIERS IN PLANT SCIENCE 2021; 12:685654. [PMID: 34220906 PMCID: PMC8253226 DOI: 10.3389/fpls.2021.685654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/27/2021] [Indexed: 05/06/2023]
Abstract
Anthocyanins and proanthocyanidins (PAs) are important flavonoids in Chinese bayberry (Morella rubra), which functions in fruit color and exhibits multiple health promoting and disease-preventing effects. To investigate the regulation of their biosynthesis in Chinese bayberries, we isolated and identified a subgroup 4 MYB transcription factor (TF), MrMYB6, and found MrMYB6 shared similar repressor domains with other MYB co-repressors of anthocyanin and PA biosynthesis after sequence analysis. Gene expression results revealed the transcripts of MrMYB6 were negatively correlated with the anthocyanin and insoluble PA contents and also with the gene expressions involved in anthocyanin biosynthesis and PA specific genes such as MrLAR and MrANR during the late ripening stages of bayberries. In addition, overexpression of MrMYB6 in tobacco inhibited the transcript levels of NtCHI, NtLAR, and NtANR2, resulting into a decline in the levels of anthocyanins and PAs in tobacco flowers. We further found that MrMYB6 interacted with MrbHLH1 and MrWD40-1 to form functional complexes that acted to directly repress the promoter activities of the PA-specific gene MrLAR and MrANR and the anthocyanin-specific gene MrANS and MrUFGT. Taken together, our results suggested that MrMYB6 might negatively regulate anthocyanin and PA accumulation in Chinese bayberry.
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16
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Advances in Biosynthesis and Biological Functions of Proanthocyanidins in Horticultural Plants. Foods 2020; 9:foods9121774. [PMID: 33265960 PMCID: PMC7759826 DOI: 10.3390/foods9121774] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/26/2020] [Accepted: 11/26/2020] [Indexed: 02/06/2023] Open
Abstract
Proanthocyanidins are colorless flavonoid polymers condensed from flavan-3-ol units. They are essential secondary plant metabolites that contribute to the nutritional value and sensory quality of many fruits and the related processed products. Mounting evidence has shown that the accumulation of proanthocyanidins is associated with the resistance of plants against a broad spectrum of abiotic and biotic stress conditions. The biosynthesis of proanthocyanidins has been examined extensively, allowing for identifying and characterizing the key regulators controlling the biosynthetic pathway in many plants. New findings revealed that these specific regulators were involved in the proanthocyanidins biosynthetic network in response to various environmental conditions. This paper reviews the current knowledge regarding the control of key regulators in the underlying proanthocyanidins biosynthetic and molecular mechanisms in response to environmental stress. Furthermore, it discusses the directions for future research on the metabolic engineering of proanthocyanidins production to improve food and fruit crop quality.
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17
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Zhang M, Liu J, Ma Q, Qin Y, Wang H, Chen P, Ma L, Fu X, Zhu L, Wei H, Yu S. Deficiencies in the formation and regulation of anther cuticle and tryphine contribute to male sterility in cotton PGMS line. BMC Genomics 2020. [PMID: 33228563 DOI: 10.1186/s12864-020-07250-7251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND Male sterility is a simple and efficient pollination control system that is widely exploited in hybrid breeding. In upland cotton, CCRI9106, a photosensitive genetic male sterile (PGMS) mutant isolated from CCRI040029, was reported of great advantages to cotton heterosis. However, little information concerning the male sterility of CCRI9106 is known. Here, comparative transcriptome analysis of CCRI9106 (the mutant, MT) and CCRI040029 (the wild type, WT) anthers in Anyang (long-day, male sterile condition to CCRI9106) was performed to reveal the potential male sterile mechanism of CCRI9106. RESULTS Light and electron microscopy revealed that the male sterility phenotype of MT was mainly attributed to irregularly exine, lacking tryphine and immature anther cuticle. Based on the cytological characteristics of MT anthers, anther RNA libraries (18 in total) of tetrad (TTP), late uninucleate (lUNP) and binucleate (BNP) stages in MT and WT were constructed for transcriptomic analysis, therefore revealing a total of 870,4 differentially expressed genes (DEGs). By performing gene expression pattern analysis and protein-protein interaction (PPI) networks construction, we found down-regulation of DEGs, which enriched by the lipid biosynthetic process and the synthesis pathways of several types of secondary metabolites such as terpenoids, flavonoids and steroids, may crucial to the male sterility phenotype of MT, and resulting in the defects of anther cuticle and tryphine, even the irregularly exine. Furthermore, several lipid-related genes together with ABA-related genes and MYB transcription factors were identified as hub genes via weighted gene co-expression network analysis (WGCNA). Additionally, the ABA content of MT anthers was reduced across all stages when compared with WT anthers. At last, genes related to the formation of anther cuticle and tryphine could activated in MT under short-day condition. CONCLUSIONS We propose that the down-regulation of genes related to the assembly of anther cuticle and tryphine may lead to the male sterile phenotype of MT, and MYB transcription factors together with ABA played key regulatory roles in these processes. The conversion of fertility in different photoperiods may closely relate to the functional expression of these genes. These findings contribute to elucidate the mechanism of male sterility in upland cotton.
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Affiliation(s)
- Meng Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Ji Liu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Qiang Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Yuan Qin
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Pengyun Chen
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Liang Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Xiaokang Fu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Longfu Zhu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China.
| | - Shuxun Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China.
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18
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Zhang M, Liu J, Ma Q, Qin Y, Wang H, Chen P, Ma L, Fu X, Zhu L, Wei H, Yu S. Deficiencies in the formation and regulation of anther cuticle and tryphine contribute to male sterility in cotton PGMS line. BMC Genomics 2020; 21:825. [PMID: 33228563 PMCID: PMC7685665 DOI: 10.1186/s12864-020-07250-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 11/18/2020] [Indexed: 01/17/2023] Open
Abstract
Background Male sterility is a simple and efficient pollination control system that is widely exploited in hybrid breeding. In upland cotton, CCRI9106, a photosensitive genetic male sterile (PGMS) mutant isolated from CCRI040029, was reported of great advantages to cotton heterosis. However, little information concerning the male sterility of CCRI9106 is known. Here, comparative transcriptome analysis of CCRI9106 (the mutant, MT) and CCRI040029 (the wild type, WT) anthers in Anyang (long-day, male sterile condition to CCRI9106) was performed to reveal the potential male sterile mechanism of CCRI9106. Results Light and electron microscopy revealed that the male sterility phenotype of MT was mainly attributed to irregularly exine, lacking tryphine and immature anther cuticle. Based on the cytological characteristics of MT anthers, anther RNA libraries (18 in total) of tetrad (TTP), late uninucleate (lUNP) and binucleate (BNP) stages in MT and WT were constructed for transcriptomic analysis, therefore revealing a total of 870,4 differentially expressed genes (DEGs). By performing gene expression pattern analysis and protein-protein interaction (PPI) networks construction, we found down-regulation of DEGs, which enriched by the lipid biosynthetic process and the synthesis pathways of several types of secondary metabolites such as terpenoids, flavonoids and steroids, may crucial to the male sterility phenotype of MT, and resulting in the defects of anther cuticle and tryphine, even the irregularly exine. Furthermore, several lipid-related genes together with ABA-related genes and MYB transcription factors were identified as hub genes via weighted gene co-expression network analysis (WGCNA). Additionally, the ABA content of MT anthers was reduced across all stages when compared with WT anthers. At last, genes related to the formation of anther cuticle and tryphine could activated in MT under short-day condition. Conclusions We propose that the down-regulation of genes related to the assembly of anther cuticle and tryphine may lead to the male sterile phenotype of MT, and MYB transcription factors together with ABA played key regulatory roles in these processes. The conversion of fertility in different photoperiods may closely relate to the functional expression of these genes. These findings contribute to elucidate the mechanism of male sterility in upland cotton. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07250-1.
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Affiliation(s)
- Meng Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China.,National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Ji Liu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Qiang Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Yuan Qin
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Pengyun Chen
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Liang Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Xiaokang Fu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China
| | - Longfu Zhu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China.
| | - Shuxun Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, China.
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Lara MV, Bonghi C, Famiani F, Vizzotto G, Walker RP, Drincovich MF. Stone Fruit as Biofactories of Phytochemicals With Potential Roles in Human Nutrition and Health. FRONTIERS IN PLANT SCIENCE 2020; 11:562252. [PMID: 32983215 PMCID: PMC7492728 DOI: 10.3389/fpls.2020.562252] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/12/2020] [Indexed: 05/07/2023]
Abstract
Phytochemicals or secondary metabolites present in fruit are key components contributing to sensory attributes like aroma, taste, and color. In addition, these compounds improve human nutrition and health. Stone fruits are an important source of an array of secondary metabolites that may reduce the risk of different diseases. The first part of this review is dedicated to the description of the main secondary organic compounds found in plants which include (a) phenolic compounds, (b) terpenoids/isoprenoids, and (c) nitrogen or sulfur containing compounds, and their principal biosynthetic pathways and their regulation in stone fruit. Then, the type and levels of bioactive compounds in different stone fruits of the Rosaceae family such as peach (Prunus persica), plum (P. domestica, P. salicina and P. cerasifera), sweet cherries (P. avium), almond kernels (P. dulcis, syn. P. amygdalus), and apricot (P. armeniaca) are presented. The last part of this review encompasses pre- and postharvest treatments affecting the phytochemical composition in stone fruit. Appropriate management of these factors during pre- and postharvest handling, along with further characterization of phytochemicals and the regulation of their synthesis in different cultivars, could help to increase the levels of these compounds, leading to the future improvement of stone fruit not only to enhance organoleptic characteristics but also to benefit human health.
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Affiliation(s)
- María Valeria Lara
- Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, Legnaro, Italy
| | - Franco Famiani
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Giannina Vizzotto
- Department of Agricultural, Food, Environmental, and Animal Sciences, University of Udine, Udine, Italy
| | - Robert P. Walker
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - María Fabiana Drincovich
- Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
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20
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Arlotta C, Puglia GD, Genovese C, Toscano V, Karlova R, Beekwilder J, De Vos RCH, Raccuia SA. MYB5-like and bHLH influence flavonoid composition in pomegranate. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 298:110563. [PMID: 32771164 DOI: 10.1016/j.plantsci.2020.110563] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/25/2020] [Accepted: 06/11/2020] [Indexed: 05/28/2023]
Abstract
The fruit of the pomegranate (Punica granatum L.) is an important nutraceutical food rich in polyphenolic compounds, including hydrolysable tannins, anthocyanins and flavonols. Their composition varies according to cultivar, tissue and fruit development stage and is probably regulated by a combination of MYB and bHLH type transcription factors (TFs). In this study, metabolomics analysis during fruit developmental stages in the main pomegranate cultivars, Wonderful and Valenciana with contrasting colour of their ripe fruits, showed that flavonols were mostly present in flowers while catechins were highest in unripe fruits and anthocyanins in late fruit maturation stages. A novel MYB TF, PgMYB5-like, was identified, which differs from previously isolated pomegranate TFs by unique C-terminal protein motifs and lack of the amino-acid residues conserved among anthocyanins promoting MYBs. In both pomegranate cultivars the expression of PgMYB5-like was high at flowering stage, while it decreased during fruit ripening. A previously identified bHLH-type TF, PgbHLH, also showed high transcript levels at flowering stage in both cultivars, while it showed a decrease in expression during fruit ripening in cv. Valenciana, but not in cv. Wonderful. Functional analysis of both TFs was performed by agro-infiltration into Nicotiana benthamiana leaves. Plants infiltrated with the PgMYB5-like+PgbHLH combined construct showed a specific and significant accumulation of intermediates of the flavonoid pathway, especially dihydroflavonols, while anthocyanins were not produced. Thus, we propose a role for PgMYB5-like and PgbHLH in the first steps of flavonoid production in flowers and in unripe fruits. The expression patterns of these two TFs may be key in determining the differential flavonoid composition in both flowers and fruits of the pomegranate varieties Wonderful and Valenciana.
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Affiliation(s)
- Carmen Arlotta
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Agricoli e Forestali del Mediterraneo (CNR-ISAFOM) U.O.S. Catania, Via Empedocle, 58, 95128, Catania, Italy
| | - Giuseppe D Puglia
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Agricoli e Forestali del Mediterraneo (CNR-ISAFOM) U.O.S. Catania, Via Empedocle, 58, 95128, Catania, Italy.
| | - Claudia Genovese
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Agricoli e Forestali del Mediterraneo (CNR-ISAFOM) U.O.S. Catania, Via Empedocle, 58, 95128, Catania, Italy
| | - Valeria Toscano
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Agricoli e Forestali del Mediterraneo (CNR-ISAFOM) U.O.S. Catania, Via Empedocle, 58, 95128, Catania, Italy
| | - Rumyana Karlova
- Wageningen Plant Research, Bioscience, 6700 AA, Wageningen, the Netherlands
| | - Jules Beekwilder
- Wageningen Plant Research, Bioscience, 6700 AA, Wageningen, the Netherlands
| | - Ric C H De Vos
- Wageningen Plant Research, Bioscience, 6700 AA, Wageningen, the Netherlands
| | - Salvatore A Raccuia
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Agricoli e Forestali del Mediterraneo (CNR-ISAFOM) U.O.S. Catania, Via Empedocle, 58, 95128, Catania, Italy
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21
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Peng Y, Thrimawithana AH, Cooney JM, Jensen DJ, Espley RV, Allan AC. The proanthocyanin-related transcription factors MYBC1 and WRKY44 regulate branch points in the kiwifruit anthocyanin pathway. Sci Rep 2020; 10:14161. [PMID: 32843672 PMCID: PMC7447792 DOI: 10.1038/s41598-020-70977-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/07/2020] [Indexed: 12/11/2022] Open
Abstract
The groups of plant flavonoid metabolites termed anthocyanins and proanthocyanins (PA) are responsible for pigmentation in seeds, flowers and fruits. Anthocyanins and PAs are produced by a pathway of enzymes which are transcriptionally regulated by transcription factors (TFs) that form the MYB-bHLH-WD40 (MBW) complex. In this study, transcriptomic analysis of purple-pigmented kiwifruit skin and flesh tissues identified MYBC1, from subgroup 5 of the R2R3 MYB family, and WRKY44 (highly similar to Arabidopsis TTG2) as candidate activators of the anthocyanin pathway. Transient over-expression of MYBC1 and WRKY44 induced anthocyanin accumulation in tobacco leaves. Dual luciferase promoter activation assays revealed that both MYBC1 and WRKY44 were able to strongly activate the promoters of the kiwifruit F3'H and F3'5'H genes. These enzymes are branch points of the pathway which specifies the type of anthocyanin accumulated. Stable over-expression of MYBC1 and WRKY44 in kiwifruit calli activated the expression of F3'5'H and PA-related biosynthetic genes as well as increasing levels of PAs. These results suggest that while previously characterised anthocyanin activator MYBs regulate the overall anthocyanin biosynthesis pathway, the PA-related TFs, MYBC1 and WRKY44, more specifically regulate key branch points. This adds a layer of regulatory control that potentially balances anthocyanin and PA levels.
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Affiliation(s)
- Yongyan Peng
- School of Biological Sciences, University of Auckland, 3 Symonds Street, Auckland, New Zealand.
- The New Zealand Institute for Plant and Food Research Limited, 120 Mt Albert Road, Auckland, New Zealand.
| | - Amali H Thrimawithana
- The New Zealand Institute for Plant and Food Research Limited, 120 Mt Albert Road, Auckland, New Zealand
| | - Janine M Cooney
- The New Zealand Institute for Plant and Food Research Limited, Bisley Road, Ruakura, Hamilton, 3214, New Zealand
| | - Dwayne J Jensen
- The New Zealand Institute for Plant and Food Research Limited, Bisley Road, Ruakura, Hamilton, 3214, New Zealand
| | - Richard V Espley
- School of Biological Sciences, University of Auckland, 3 Symonds Street, Auckland, New Zealand
- The New Zealand Institute for Plant and Food Research Limited, 120 Mt Albert Road, Auckland, New Zealand
| | - Andrew C Allan
- School of Biological Sciences, University of Auckland, 3 Symonds Street, Auckland, New Zealand
- The New Zealand Institute for Plant and Food Research Limited, 120 Mt Albert Road, Auckland, New Zealand
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22
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Liu C, Hao J, Qiu M, Pan J, He Y. Genome-wide identification and expression analysis of the MYB transcription factor in Japanese plum (Prunus salicina). Genomics 2020; 112:4875-4886. [PMID: 32818635 DOI: 10.1016/j.ygeno.2020.08.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 08/06/2020] [Accepted: 08/13/2020] [Indexed: 01/20/2023]
Abstract
MYB proteins constitute one of the largest transcription factor families in plants, members of which are involved in various plant physiological and biochemical processes. Japanese plum (Prunus salicina) is one of the important stone fruit crops worldwide. To date, no comprehensive study of the MYB family in Japanese plum has been reported. In this study, we performed genome-wide analysis of MYB genes in Japanese plum including the phylogeny, gene structures, protein motifs, chromosomal locations, collinearity and expression patterns analysis. A total of 96 Japanese plum R2R3-MYB (PsMYB) genes were characterized and distributed on 8 chromosomes at various densities. Collinearity analysis indicated that the segmental duplication events played a crucial role in the expansion of PsMYB genes, and the interspecies synteny analysis revealed the orthologous gene pairs between Japanese plum and other four selected Rosaceae species. The 96 PsMYB genes could be classified into 27 subgroups based on phylogenetic topology, as supported by the conserved gene structures and motif compositions. Further comparative phylogenetic analysis revealed the functional divergence of MYB gene family during evolution, and three subgroups which included only Rasaceae MYB genes were identified. Expression analysis revealed the distinct expression profiles of the PsMYB genes, and further functional predictions found some of them might be associated with the plum fruit quality traits. Our researches provide a global insight into the organization, phylogeny, evolution and expression patterns of the PsMYB genes, and contribute to the greater understanding of their functional roles in Japanese plum.
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Affiliation(s)
- Chaoyang Liu
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Maoming Branch, Maoming 525000, China
| | - Jingjing Hao
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Maoming Branch, Maoming 525000, China
| | - Mengqing Qiu
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Maoming Branch, Maoming 525000, China
| | - Jianjun Pan
- Agricultural Technology Extension Center of Conghua District, Guangdong Province, Guangzhou 510900, China
| | - Yehua He
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Maoming Branch, Maoming 525000, China.
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23
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Cheng J, Yu K, Shi Y, Wang J, Duan C. Transcription Factor VviMYB86 Oppositely Regulates Proanthocyanidin and Anthocyanin Biosynthesis in Grape Berries. FRONTIERS IN PLANT SCIENCE 2020; 11:613677. [PMID: 33519871 PMCID: PMC7838568 DOI: 10.3389/fpls.2020.613677] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/22/2020] [Indexed: 05/07/2023]
Abstract
Proanthocyanidins (PAs) and anthocyanins are two vital groups of flavonoid compounds for grape berries and red wines. Several transcription factors (TFs) have been identified to be involved in regulating PA and anthocyanin biosynthesis in grape berries. However, research on TFs with different regulatory mechanisms for these two biosynthesis branches in grapes remains limited. In this study, we identified an R2R3-MYB TF, VviMYB86, whose spatiotemporal gene expression pattern in grape berries coincided well with PA accumulation but contrasted with anthocyanin synthesis. Both in vivo and in vitro experiments verified that VviMYB86 positively regulated PA biosynthesis, primarily by upregulating the expression of the two leucoanthocyanidin reductase (LAR) genes in the Arabidopsis protoplast system, as well as in VviMYB86-overexpressing grape callus cultured under 24 h of darkness. Moreover, VviMYB86 was observed to repress the anthocyanin biosynthesis branch in grapes by downregulating the transcript levels of VviANS and VviUFGT. Overall, VviMYB86 is indicated to have a broad effect on flavonoid synthesis in grape berries. The results of this study will help elucidate the regulatory mechanism governing the expression of the two LAR genes in grape berries and provide new insights into the regulation of PA and anthocyanin biosynthesis in grape berries.
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Affiliation(s)
- Jing Cheng
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Keji Yu
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Ying Shi
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Jun Wang
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Changqing Duan
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing, China
- *Correspondence: Changqing Duan,
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Zhou H, Lin-Wang K, Wang F, Espley RV, Ren F, Zhao J, Ogutu C, He H, Jiang Q, Allan AC, Han Y. Activator-type R2R3-MYB genes induce a repressor-type R2R3-MYB gene to balance anthocyanin and proanthocyanidin accumulation. THE NEW PHYTOLOGIST 2019; 221:1919-1934. [PMID: 30222199 DOI: 10.1111/nph.15486] [Citation(s) in RCA: 153] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 09/12/2018] [Indexed: 05/22/2023]
Abstract
Anthocyanin and proanthocyanidin (PA) accumulation is regulated by both myeloblastosis (MYB) activators and repressors, but little information is available on hierarchical interactions between the positive and negative regulators. Here, we report on a R2R3-MYB repressor in peach, designated PpMYB18, which acts as a negative regulator of anthocyanin and PA accumulation. PpMYB18 can be activated by both anthocyanin- and PA-related MYB activators, and is expressed both at fruit ripening and juvenile stages when anthocyanins or PAs, respectively, are being synthesized. The PpMYB18 protein competes with MYB activators for binding to basic Helix Loop Helixes (bHLHs), which develops a fine-tuning regulatory loop to balance PA and anthocyanin accumulation. In addition, the bHLH binding motif in the R3 domain and the C1 and C2 repression motifs in the C-terminus of PpMYB18 both confer repressive activity of PpMYB18. Our study also demonstrates a modifying negative feedback loop, which prevents cells from excess accumulation of anthocyanin and PAs, and serves as a model for balancing secondary metabolite accumulation at the transcriptional level.
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Affiliation(s)
- Hui Zhou
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, Wuhan, 430074, China
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230031, China
| | - Kui Lin-Wang
- The New Zealand Institute for Plant & Food Research Ltd, Mt Albert Research Centre, Private Bag, Auckland, 92169, New Zealand
| | - Furong Wang
- Institute of Fruit Tree and Tea, Hubei Academy of Agricultural Sciences, Wuhan, 430209, China
| | - Richard V Espley
- The New Zealand Institute for Plant & Food Research Ltd, Mt Albert Research Centre, Private Bag, Auckland, 92169, New Zealand
| | - Fei Ren
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Jianbo Zhao
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Collins Ogutu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, Wuhan, 430074, China
- Sino-African Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Huaping He
- Institute of Fruit Tree and Tea, Hubei Academy of Agricultural Sciences, Wuhan, 430209, China
| | - Quan Jiang
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Andrew C Allan
- The New Zealand Institute for Plant & Food Research Ltd, Mt Albert Research Centre, Private Bag, Auckland, 92169, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, 1020, New Zealand
| | - Yuepeng Han
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of Sciences, Wuhan, 430074, China
- Sino-African Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
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Cao Y, Xie L, Ma Y, Ren C, Xing M, Fu Z, Wu X, Yin X, Xu C, Li X. PpMYB15 and PpMYBF1 Transcription Factors Are Involved in Regulating Flavonol Biosynthesis in Peach Fruit. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:644-652. [PMID: 30525549 DOI: 10.1021/acs.jafc.8b04810] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Flavonoids are major polyphenol compounds in plants and contribute substantially to the health-promoting benefits of fruit and vegetables. Peach is rich in polyphenols with flavonols as the main flavonoids. To investigate the regulation of flavonol biosynthesis in peach fruit, two R2R3-MYB transcription factor (TF) genes, PpMYB15 and PpMYBF1, were isolated and characterized. Sequence analysis revealed that the PpMYB15 and PpMYBF1 proteins are members of the flavonol clade of the R2R3-MYB family. Real-time quantitative PCR analysis showed that PpMYB15 and PpMYBF1 transcript levels correlated well with the flavonol content and the expression of flavonol synthase ( PpFLS1) in different fruit samples. Dual-luciferase assays indicated that both PpMYB15 and PpMYBF1 could trans-activate promoters of flavonoid biosynthesis genes, including chalcone synthase ( PpCHS1), chalcone isomerase ( PpCHI1), flavanone 3-hydroxylase ( PpF3H), and PpFLS1. Transient overexpression of 35S::PpMYB15 or 35S::PpMYBF1 both triggered flavonol biosynthesis but not anthocyanin and proanthocyanidin biosynthesis in tobacco leaves. In transgenic tobacco flowers, overexpression of 35S::PpMYB15 or 35S::PpMYBF1 caused a significant increase in flavonol levels and significantly reduced anthocyanin accumulation, resulting in pale-pink or pure white flowers. These results suggest that PpMYB15 and PpMYBF1 are functional flavonol-specific positive regulators in peach fruit and are important candidates for biotechnological engineering flavonol biosynthesis in plants.
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Affiliation(s)
- Yunlin Cao
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Linfeng Xie
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Yingyue Ma
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Chuanhong Ren
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Mengyun Xing
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Zishan Fu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Xinyue Wu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Xueren Yin
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Changjie Xu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
| | - Xian Li
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology , Zhejiang University , Hangzhou 310058 , China
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Li C, Qiu J, Huang S, Yin J, Yang G. AaMYB3 interacts with AabHLH1 to regulate proanthocyanidin accumulation in Anthurium andraeanum (Hort.)-another strategy to modulate pigmentation. HORTICULTURE RESEARCH 2019; 6:14. [PMID: 30603098 PMCID: PMC6312548 DOI: 10.1038/s41438-018-0102-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 10/02/2018] [Accepted: 10/11/2018] [Indexed: 05/20/2023]
Abstract
Proanthocyanidins (PAs), also known as "condensed tannins", are colorless metabolites produced through the flavonoid pathway that are involved in stress resistance in plants. Because PAs are involved in the anthocyanin biosynthetic pathway, they play a role in the modification of pigmentation conferred by anthocyanins in ornamental organs. In this study, we isolated the gene and functionally characterized an R2R3-MYB transcription factor (TF), AaMYB3, and a basic helix-loop-helix TF, AabHLH1, from Anthurium andraeanum (Hort.), a typical tropical flower. AaMYB3 is primarily expressed in the spathe and negatively correlates with anthocyanin accumulation. A complementation test in an Arabidopsis tt8 mutant showed that AabHLH1 successfully restores the PA-deficient seed coat phenotype. The ectopic overexpression of AaMYB3 alone or its coexpression with AabHLH1 in transgenic tobacco resulted in light pink or even pale-pink corolla limbs by reducing their anthocyanin levels and greatly enhancing their accumulation of PAs. This overexpression of the anthurium TF genes upregulated the late anthocyanin enzyme-encoding genes (NtDFR and NtANS) and the key PA genes (NtLAR and NtANR) in transgenic tobacco. The interaction between AaMYB3 and the AabHLH1 protein was confirmed using yeast two-hybrid (Y2H) and bimolecular fluorescence complementation (BiFC) assays. In the developing red spathes of the cultivars "Vitara" and "Tropical", the expression of AaMYB3 was closely linked to PA accumulation, and AaMYB3 was coexpressed with AaCHS, AaF3H, AaDFR, AaANS, AaLAR, and AaANR. The expression pattern of AabHLH1 was similar to that of AaF3'H. Our results suggest that AaMYB3 and AabHLH1 are involved in the regulation of PA biosynthesis in anthurium and could potentially be used to metabolically engineer PA biosynthesis in plants.
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Affiliation(s)
- Chonghui Li
- Tropical Crops Genetic Resources Institute, the Chinese Academy of Tropical Agricultural Sciences (CATAS) / Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture, Danzhou, 571737 China
- The Engineering Technology Research Center of Tropical Ornamental Plant Germplasm Innovation and Utilization, Hainan Province, Danzhou, 571737 China
| | - Jian Qiu
- Rubber Research Institute, CATAS/ Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture, Danzhou, 571737 China
| | - Surong Huang
- Tropical Crops Genetic Resources Institute, the Chinese Academy of Tropical Agricultural Sciences (CATAS) / Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture, Danzhou, 571737 China
- The Engineering Technology Research Center of Tropical Ornamental Plant Germplasm Innovation and Utilization, Hainan Province, Danzhou, 571737 China
| | - Junmei Yin
- Tropical Crops Genetic Resources Institute, the Chinese Academy of Tropical Agricultural Sciences (CATAS) / Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture, Danzhou, 571737 China
- The Engineering Technology Research Center of Tropical Ornamental Plant Germplasm Innovation and Utilization, Hainan Province, Danzhou, 571737 China
| | - Guangsui Yang
- Tropical Crops Genetic Resources Institute, the Chinese Academy of Tropical Agricultural Sciences (CATAS) / Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture, Danzhou, 571737 China
- The Engineering Technology Research Center of Tropical Ornamental Plant Germplasm Innovation and Utilization, Hainan Province, Danzhou, 571737 China
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Biochemical and Functional Characterization of Anthocyanidin Reductase (ANR) from Mangifera indica L. Molecules 2018; 23:molecules23112876. [PMID: 30400564 PMCID: PMC6278290 DOI: 10.3390/molecules23112876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 10/27/2018] [Accepted: 10/30/2018] [Indexed: 11/20/2022] Open
Abstract
Mango (Mangifera indica L.) is abundant in proanthocyanidins (PAs) that are important for human health and plant response to abiotic stresses. However, the molecular mechanisms involved in PA biosynthesis still need to be elucidated. Anthocyanidin reductase (ANR) catalyzes a key step in PA biosynthesis. In this study, three ANR cDNAs (MiANR1-1,1-2,1-3) were isolated from mango, and expressed in Escherichia coli. In vitro enzyme assay showed MiANR proteins convert cyanidin to their corresponding flavan-3-ols, such as (−)-catechin and (−)-epicatechin. Despite high amino acid similarity, the recombinant ANR proteins exhibited differences in enzyme kinetics and cosubstrate preference. MiANR1-2 and MiANR1-3 have the same optimum pH of 4.0 in citrate buffer, while the optimum pH for MiANR1-1 is pH 3.0 in phosphate buffer. MiANR1-1 does not use either NADPH or NADH as co-substrate while MiANR1-2/1-3 use only NADPH as co-substrate. MiANR1-2 has the highest Km and Vmax for cyanidin, followed by MiANR1-3 and MiANR1-1. The overexpression of MiANRs in ban mutant reconstructed the biosynthetic pathway of PAs in the seed coat. These data demonstrate MiANRs can form the ANR pathway, leading to the formation of two types of isomeric flavan-3-ols and PAs in mango.
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Allan AC, Espley RV. MYBs Drive Novel Consumer Traits in Fruits and Vegetables. TRENDS IN PLANT SCIENCE 2018; 23:693-705. [PMID: 30033210 DOI: 10.1016/j.tplants.2018.06.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/01/2018] [Accepted: 06/05/2018] [Indexed: 05/27/2023]
Abstract
Eating plant-derived compounds can lead to a longer and healthier life and also benefits the environment. Innovation in the fresh food sector, as well as new cultivars, can improve consumption of fruit and vegetables, with MYB transcription factors being a target to drive this novelty. Plant MYB transcription factors are implicated in diverse roles including development, hormone signalling, and metabolite biosynthesis. The reds and blues of fruit and vegetables provided by anthocyanins, phlobaphenes, and betalains are controlled by specific R2R3 MYBs. New studies are now revealing that MYBs also control carotenoid biosynthesis and other quality traits, such as flavour and texture. Future breeding techniques may manipulate or create alleles of key MYB transcription factors.
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Affiliation(s)
- Andrew C Allan
- New Zealand Institute for Plant and Food Research, Mt Albert, Auckland, New Zealand; School of Biological Sciences, University of Auckland, Auckland, New Zealand.
| | - Richard V Espley
- New Zealand Institute for Plant and Food Research, Mt Albert, Auckland, New Zealand
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29
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Zhang C, Ma R, Xu J, Yan J, Guo L, Song J, Feng R, Yu M. Genome-wide identification and classification of MYB superfamily genes in peach. PLoS One 2018; 13:e0199192. [PMID: 29927971 PMCID: PMC6013194 DOI: 10.1371/journal.pone.0199192] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 06/01/2018] [Indexed: 11/18/2022] Open
Abstract
The MYB transcription factor superfamily is one of the largest superfamilies modulating various biological processes in plants. Over the past few decades, many MYB superfamily genes have been identified and characterized in some plant species. However, genes belonging to the MYB superfamily in peach (Prunus persica) have not been comprehensively identified and characterized although the genome sequences of peach were released several years ago. In total, this study yielded a set of 256 MYB superfamily genes that was divided into five subfamilies: the R2R3-MYB (2R-MYB), R1R2R3-MYB (3R-MYB), MYB-related (1R-MYB), 4R-MYB, and Atypical-MYB subfamilies. These subfamilies contained 128, 4, 109, 1, and 14 members, respectively. The 128 R2R3-MYB subfamily genes in peach were further clustered into 35 groups, and the 109 MYB-related subfamily genes were further clustered into 6 groups: the CCA1-like, CPC-like, TBP-like, I-box-binding-like, R-R-type, and Peach-specific groups. The motif compositions and exon/intron structures within each group within the R2R3-MYB or MYB-related subfamily in peach were highly conserved. The logo sequences of the R2 and R3 repeats of R2R3-MYB subfamily members were highly conserved with those in these repeats of several other plant species. Except for 48 novel peach-specific MYB genes, the remaining 208 out of 256 MYB genes in peach were conserved with the corresponding 198 MYB genes in A. thaliana. Additionally, the 256 MYB genes unevenly distributed on chromosomes 1 to 8 of the peach genome. Eighty-one orthologous pairs of peach/A. thaliana MYB genes were identified among 256 MYB genes in peach and 198 MYB genes in A. thaliana in this study. In addition, 146 pairs of paralogous MYB genes were identified on the eight chromosomes of peach. The expression levels of some of the 51 MYB genes selected for qRT-PCR analysis decreased or increased with red-fleshed fruit development, while the expression patterns of some genes followed no clear rules over the five developmental stages of fruits. This study laid the foundation for further functional analysis of MYB superfamily genes in peach and enriched the knowledge of MYB superfamily genes in plant species.
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Affiliation(s)
- Chunhua Zhang
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Ruijuan Ma
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Jianlan Xu
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Juan Yan
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Lei Guo
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Juan Song
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Ruchao Feng
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Mingliang Yu
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
- * E-mail:
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Delgado LD, Zúñiga PE, Figueroa NE, Pastene E, Escobar-Sepúlveda HF, Figueroa PM, Garrido-Bigotes A, Figueroa CR. Application of a JA-Ile Biosynthesis Inhibitor to Methyl Jasmonate-Treated Strawberry Fruit Induces Upregulation of Specific MBW Complex-Related Genes and Accumulation of Proanthocyanidins. Molecules 2018; 23:molecules23061433. [PMID: 29899259 PMCID: PMC6100305 DOI: 10.3390/molecules23061433] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/09/2018] [Accepted: 06/11/2018] [Indexed: 11/16/2022] Open
Abstract
Fleshy fruits are an important source of anthocyanins and proanthocyanidins (PAs), which protect plants against stress, and their consumption provides beneficial effects for human health. In strawberry fruit, the application of exogenous methyl jasmonate (MeJA) upregulates anthocyanin accumulation, although the relationship between the jasmonate pathway and anthocyanin and PA biosynthesis in fruits remains to be understood. Anthocyanin and PA accumulation is mainly regulated at the transcriptional level through R2R3-MYB and bHLH transcription factors in different plant species and organs. Here, the effect of jarin-1, a specific inhibitor of bioactive JA (jasmonoyl-isoleucine, JA-Ile) biosynthesis, on anthocyanin and PA accumulation was evaluated during strawberry (Fragaria × ananassa) fruit development using an in vitro ripening system for 48 h. Also, we observed the effects of MeJA and the application of jarin-1 to MeJA-treated fruits (MeJA + jarin-1 treatment). We assessed changes of expression levels for the JA-Ile and MeJA biosynthetic (FaJAR1.2 and FaJMT), JA signaling-related (FaMYC2 and FaJAZ1), MYB-bHLH-WD40 (MBW) complex-related (FabHLH3/33, FaMYB9/10/11, and repressor FaMYB1), and anthocyanin and PA biosynthetic (FaANS, FaUFGT, FaANR, and FaLAR) genes. In addition, the promoter region of MBW complex-related MYB genes was isolated and sequenced. We found a higher redness of strawberry fruit skin and anthocyanin content in MeJA-treated fruits with respect to jarin-1-treated ones concomitant with an upregulation of FaANS and FaUFGT genes. Inversely, the PA content was higher in jarin-1- and MeJA + jarin-1-treated than in MeJA-treated fruits. MeJA + jarin-1 treatment resulted in an upregulation of FaANR and associated transcription factors such as FabHLH33 and FaMYB9/11 along with FaJMT and FaJAR1.2. Finally, we found JA-responsive elements in the promoter regions of FaMYB1/9/10/11 genes. It is proposed that PA biosynthesis-related genes can be upregulated by the application of jarin-1 to MeJA-treated fruit, thus increasing PA accumulation in strawberry.
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Affiliation(s)
- Laura D Delgado
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
| | - Paz E Zúñiga
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
| | - Nicolás E Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
| | - Edgar Pastene
- Laboratorio de Farmacognosia, Faculty of Pharmacy, Universidad de Concepción, Concepción 4070386, Chile.
| | - Hugo F Escobar-Sepúlveda
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
| | - Pablo M Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
| | - Adrián Garrido-Bigotes
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
- Faculty of Forest Sciences, Universidad de Concepción, Concepción 4070386, Chile.
| | - Carlos R Figueroa
- Phytohormone Research Laboratory, Institute of Biological Sciences, Universidad de Talca, Talca 3465548, Chile.
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31
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Zhang C, Feng R, Ma R, Shen Z, Cai Z, Song Z, Peng B, Yu M. Genome-wide analysis of basic helix-loop-helix superfamily members in peach. PLoS One 2018; 13:e0195974. [PMID: 29659634 PMCID: PMC5901983 DOI: 10.1371/journal.pone.0195974] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/03/2018] [Indexed: 12/24/2022] Open
Abstract
The basic helix-loop-helix (bHLH) transcription factor family is a superfamily found in all eukaryotes that plays important roles in regulating growth and development. Over the past several decades, many bHLH superfamily genes have been identified and characterized in herbaceous and woody plants. However, the genes belonging to the bHLH superfamily in peach (Prunus persica) have not yet been comprehensively identified and characterized. Here, we identified 95 members of the bHLH superfamily in the peach genome, and these genes were classified into 19 subfamilies based on a phylogenetic comparison with bHLH proteins from Arabidopsis. The members within each subfamily were highly conserved according to the analysis of motif compositions and exon/intron organizations. The 95 bHLH genes were unevenly distributed on chromosomes 1 to 8 of the peach genome. We identified 57 pairs of bHLH members that were orthologous between peach and Arabidopsis. Additionally, 48 pairs of paralogous bHLH genes were identified on the eight chromosomes of the peach genome. Coupled with relative expression analysis of bHLH genes in red-fleshed peach fruit at five developmental stages, we identified several bHLH genes that might be involved in fruit development and anthocyanin biosynthesis. This study provides insight into the molecular mechanisms through which these genes are involved in the regulation of biological and biochemical processes in peach and lays the foundation for further studies on these genes.
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Affiliation(s)
- Chunhua Zhang
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Ruchao Feng
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Ruijuan Ma
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Zhijun Shen
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Zhixiang Cai
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Zhizhong Song
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Bin Peng
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
| | - Mingliang Yu
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, Jiangsu, China
- * E-mail:
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32
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Ding K, Pei T, Bai Z, Jia Y, Ma P, Liang Z. SmMYB36, a Novel R2R3-MYB Transcription Factor, Enhances Tanshinone Accumulation and Decreases Phenolic Acid Content in Salvia miltiorrhiza Hairy Roots. Sci Rep 2017; 7:5104. [PMID: 28698552 PMCID: PMC5506036 DOI: 10.1038/s41598-017-04909-w] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/22/2017] [Indexed: 11/08/2022] Open
Abstract
Phenolic acids and tanshinones are two major bioactive components in Salvia miltiorrhiza Bunge. A novel endogenous R2R3-MYB transcription factor, SmMYB36, was identified in this research. This transcript factor can simultaneously influence the content of two types of components in SmMYB36 overexpression hairy roots. SmMYB36 was mainly localized in the nucleus of onion epidermis and it has transactivation activity. The overexpression of SmMYB36 promoted tanshinone accumulation but inhibited phenolic acid and flavonoid biosynthesis in Salvia miltiorrhiza hairy roots. The altered metabolite content was due to changed metabolic flow which was regulated by transcript expression of metabolic pathway genes. The gene transcription levels of the phenylpropanoid general pathway, tyrosine derived pathway, methylerythritol phosphate pathway and downstream tanshinone biosynthetic pathway changed significantly due to the overexpression of SmMYB36. The wide distribution of MYB binding elements (MBS, MRE, MBSI and MBSII) and electrophoretic mobility shift assay results indicated that SmMYB36 may be an effective tool to regulate metabolic flux shifts.
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Affiliation(s)
- Kai Ding
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Tianlin Pei
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Zhengqing Bai
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanyan Jia
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Pengda Ma
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.
| | - Zongsuo Liang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, China.
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Chlorogenic acid, anthocyanin and flavan-3-ol biosynthesis in flesh and skin of Andean potato tubers (Solanum tuberosum subsp. andigena). Food Chem 2017; 229:837-846. [PMID: 28372251 DOI: 10.1016/j.foodchem.2017.02.150] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 02/22/2017] [Accepted: 02/28/2017] [Indexed: 12/31/2022]
Abstract
Natural variation of Andean potato was used to study the biosynthesis of phenolic compounds. Levels of phenolic compounds and corresponding structural gene transcripts were examined in flesh and skin of tubers. Phenolic acids, mainly chlorogenic acid (CGA), represent the major compounds, followed by anthocyanins and flavan-3-ols. High-anthocyanin varieties have high levels of CGA. Both metabolite and transcript levels were higher in skin than in flesh and showed a good correspondence. Two hydroxycinnamoyl-CoA transferases (HCT/HQT) have been involved in CGA production, of which HCT reflects CGA levels. Catechin was found in pigmented tissues whereas epicatechin was restricted to tuber skin. Transcripts of leucoanthocyanidin reductase (LCR), which generates catechin, could not be detected. Anthocyanidin reductase (ANR) transcripts, the enzyme responsible for epicatechin production, showed similar levels among samples. These data suggest that the biosynthesis of flavan-3-ols in potato tuber would require ANR but not LCR and that an epimerization process is involved.
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Lu Y, Bu Y, Hao S, Wang Y, Zhang J, Tian J, Yao Y. MYBs affect the variation in the ratio of anthocyanin and flavanol in fruit peel and flesh in response to shade. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 168:40-49. [PMID: 28167273 DOI: 10.1016/j.jphotobiol.2017.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 01/14/2017] [Accepted: 01/19/2017] [Indexed: 12/20/2022]
Abstract
Fruit pigment accumulation, which represents an important indicator of nutrient quality and appearance value, is often affected by low light under rain, cloud, fog and haze conditions during the veraison period. It is not known whether continuous low light interferes with the production and accumulation of secondary metabolites in veraison fruit. In this paper, we measured pigments and the transcriptional level of genes related to secondary metabolites, i.e., flavonoid biosynthesis in the peel and flesh of Malus crabapple 'Radiant' fruit in response to normal light and shade from 10th July to 30th August. The results showed crosstalk between the flavonoid biosynthetic genes and the involvement of key transcription factors such as McMYB4, McMYB7, McMYB10, and McMYB16 in the regulation of the ratio of anthocyanins and flavanols, which accounted for the different colouration of the fruit peel and flesh under shade conditions. A model is proposed for the regulation of the flavonoid pathway in the peel and flesh of 'Radiant' fruit based on our study results. Moreover, the molecular mechanism for 'Radiant' fruit colouration provides reference information for understanding the light regulatory mechanism involved in the biosynthesis of flavonoids and for designing the next generation of apple breeding.
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Affiliation(s)
- Yanfen Lu
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing University of Agriculture, Beijing 102206, China
| | - Yufen Bu
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing University of Agriculture, Beijing 102206, China
| | - Suxiao Hao
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing University of Agriculture, Beijing 102206, China
| | - Yaru Wang
- Department of Ornamental Horticulture, China Agricultural University, Beijing 100193,China
| | - Jie Zhang
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing University of Agriculture, Beijing 102206, China
| | - Ji Tian
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing University of Agriculture, Beijing 102206, China
| | - Yuncong Yao
- College of Plant Science and Technology, Beijing Key Laboratory for Agricultural Application and New Technique, Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing University of Agriculture, Beijing 102206, China.
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35
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Zhou H, Peng Q, Zhao J, Owiti A, Ren F, Liao L, Wang L, Deng X, Jiang Q, Han Y. Multiple R2R3-MYB Transcription Factors Involved in the Regulation of Anthocyanin Accumulation in Peach Flower. FRONTIERS IN PLANT SCIENCE 2016; 7:1557. [PMID: 27818667 PMCID: PMC5073212 DOI: 10.3389/fpls.2016.01557] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 10/03/2016] [Indexed: 05/21/2023]
Abstract
Anthocyanin accumulation is responsible for flower coloration in peach. Here, we report the identification and functional characterization of eight flavonoid-related R2R3-MYB transcription factors, designated PpMYB10.2, PpMYB9, PpMYBPA1, Peace, PpMYB17, PpMYB18, PpMYB19, and PpMYB20, respectively, in peach flower transcriptome. PpMYB10.2 and PpMYB9 are able to activate transcription of anthocyanin biosynthetic genes, whilst PpMYBPA1 and Peace have a strong activation on the promoters of proanthocyanin (PA) biosynthetic genes. PpMYB17-20 show a strong repressive effect on transcription of flavonoid pathway genes such as dihydroflavonol 4-reductase. These results indicate that anthocyanin accumulation in peach flower is coordinately regulated by a set of R2R3-MYB genes. In addition, PpMYB9 and PpMYB10.2 are closely related but separated into two groups, designated MYB9 and MYB10, respectively. PpMYB9 shows a strong activation on the PpUGT78A2 promoter, but with no effect on the promoter of PpUGT78B (commonly called PpUFGT in previous studies). In contrast, PpMYB10.2 is able to activate the PpUFGT promoter, but not for the PpUGT78A2 promoter. Unlike the MYB10 gene that is universally present in plants, the MYB9 gene is lost in most dicot species. Therefore, the PpMYB9 gene represents a novel group of anthocyanin-related MYB activators, which may have diverged in function from the MYB10 genes. Our study will aid in understanding the complex mechanism regulating floral pigmentation in peach and functional divergence of the R2R3-MYB gene family in plants.
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Affiliation(s)
- Hui Zhou
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
| | - Qian Peng
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
- University of Chinese Academy of SciencesBeijing, China
| | - Jianbo Zhao
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry SciencesBeijing, China
| | - Albert Owiti
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
- University of Chinese Academy of SciencesBeijing, China
| | - Fei Ren
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry SciencesBeijing, China
| | - Liao Liao
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
- Sino-African Joint Research Center, Chinese Academy of SciencesWuhan, China
| | - Lu Wang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
- Sino-African Joint Research Center, Chinese Academy of SciencesWuhan, China
| | - Xianbao Deng
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
- Sino-African Joint Research Center, Chinese Academy of SciencesWuhan, China
| | - Quan Jiang
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry SciencesBeijing, China
| | - Yuepeng Han
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan, China
- Sino-African Joint Research Center, Chinese Academy of SciencesWuhan, China
- *Correspondence: Yuepeng Han,
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