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Anthocyanin, transcription

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https://www.readbyqxmd.com/read/29232522/molecular-analysis-of-anthocyanin-related-genes-in-ornamental-cabbage
#1
Si-Won Jin, Md Abdur Rahim, Hoy-Taek Kim, Jong-In Park, Jong-Goo Kang, Ill-Sup Nou
Ornamental cabbage (Brassica oleracea var. acephala) is a winter-grown and important decorative plant of the Brassicaceae family, which displays an exceptional coloration in the central leaves of the rosette. Anthocyanins are the key determinant of the red, purple and blue colors of vegetative and reproductive parts of many plant species including ornamental cabbage. Total anthocyanin content was measured spectrophotometrically and the highest anthocyanin content detected in the red followed by light-red and white ornamental cabbage lines...
December 12, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29209349/regulation-of-fig-ficus-carica-l-fruit-color-metabolomic-and-transcriptomic-analyses-of-the-flavonoid-biosynthetic-pathway
#2
Ziran Wang, Yuanyuan Cui, Alexander Vainstein, Shangwu Chen, Huiqin Ma
Combined metabolomic and transcriptomic analyses were carried out with fig cultivar Green Peel and its color mutant "Purple Peel." Five and twenty-two metabolites were identified as having significantly different contents between fruit peels of the two cultivars at young and mature stages, respectively. Cyanidin O-malonylhexoside demonstrated a 3,992-fold increase in the mature purple peel, the first identification of a major cyanidin in fig fruit; cyanidin 3-O-glucoside, cyanidin O-malonylhexoside O-hexoside and cyanidin-3,5-O-diglucoside were upregulated 100-fold, revealing the anthocyanins underlying the purple mutation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29203778/kiwifruit-r2r3-myb-transcription-factors-and-contribution-of-the-novel-acmyb75-to-red-kiwifruit-anthocyanin-biosynthesis
#3
Wenbin Li, Zehong Ding, Mengbin Ruan, Xiaoling Yu, Ming Peng, Yifei Liu
Red kiwifruit (Actinidia chinensis) is a popular fresh fruit with a high market value due to its unique color, caused by anthocyanin accumulation. The R2R3-MYB transcription factors (TFs) have important roles in plant development and anthocyanin metabolism. In this first comprehensive study of R2R3-MYBs in kiwifruit, a total of 93 R2R3-MYB genes, including five novel previously unannotated AcMYBs, were identified. Their phylogenic relationship, exon-intron structures, and conserved motifs were analyzed. Based on transcriptome data, 60 AcMYBs were expressed (FPKM > 1) across seven developmental stages of kiwifruit, revealing five expression patterns...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29195942/protective-effect-of-mulberry-fruit-anthocyanin-on-human-hepatocyte-cells-lo2-and-caenorhabditis-elegans-under-hyperglycemic-conditions
#4
Fujie Yan, Xin'an Chen, Xiaodong Zheng
Type 2 diabetes is a chronic disease and hyperglycemia is important in the pathogenesis of diabetic complications. Exposure of LO2 cells to high glucose resulted in cellular glucose consumption and uptake decreases, reactive oxygen species (ROS) and superoxide anion (O2-) accumulation and mitochondrial dysfunction, which could be partly recovered by mulberry anthocyanin extract (MAE). And these protective effects were partly associated with regulation of nuclear factor erythroid 2-related factor 2 (Nrf2) and its downstream targets...
December 2017: Food Research International
https://www.readbyqxmd.com/read/29192027/transcription-factor-mediated-control-of-anthocyanin-biosynthesis-in-vegetative-tissues
#5
Nikolay Outchkourov, Rumyana Karlova, Matthijs Hoelscher, Xandra Schrama, Ikram Blilou, Esmer Jongedijk, Carmen Diez Simon, Aalt D J van Dijk, Dirk Bosch, Robert Hall, Jules Beekwilder
Plants accumulate secondary metabolites to adapt to environmental conditions. These compounds, here exemplified by the purple coloured anthocyanins, are accumulated upon high temperatures, UV-light, drought and nutrient deficiencies, and may contribute to tolerance to these stresses. Producing compounds is often part of a more broad response of the plant to changes in the environment. Here we investigate how a transcription-factor mediated program for controlling anthocyanin biosynthesis also has effects on formation of specialized cell structures and changes in the plant root architecture...
November 30, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29186488/a-putative-r3-myb-repressor-is-the-candidate-gene-underlying-atroviolacium-a-locus-for-anthocyanin-pigmentation-in-tomato-fruit
#6
Xue Cao, Zhengkun Qiu, Xiaotian Wang, Tong Van Giang, Xiaolin Liu, Jing Wang, Xiaoxuan Wang, Jianchang Gao, Yanmei Guo, Yongchen Du, Guoping Wang, Zejun Huang
Anthocyanins are potential health-promoting compounds in the human diet. The atv (atroviolacium) locus, derived from the wild tomato species Solanum cheesmaniae, has been shown to enhance anthocyanin pigmentation in tomato fruit when it co-exists with either the Aft (Anthocyanin fruit) or the Abg (Aubergine) locus. In the present study, the atv locus was fine-mapped to an approximately 5.0-kb interval on chromosome 7. A putative R3 MYB repressor was identified in this interval and is hereby designated as SlMYBATV...
November 25, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29176986/dissecting-the-variations-of-ripening-progression-and-flavonoid-metabolism-in-grape-berries-grown-under-double-cropping-system
#7
Wei-Kai Chen, Xian-Jin Bai, Mu-Ming Cao, Guo Cheng, Xiong-Jun Cao, Rong-Rong Guo, Yu Wang, Lei He, Xiao-Hui Yang, Fei He, Chang-Qing Duan, Jun Wang
A double cropping system has been commercially adopted in southern China, where there is abundant sunshine and heat resources. In this viticulture system, the first growing season normally starts as a summer cropping cycle; then, the vine is pruned and forced, resulting in a second crop in winter. Due to climate differences between the summer and winter growing seasons, grape ripening progression and flavonoid metabolism vary greatly. Here, the metabolites and transcriptome of flavonoid pathways were analyzed in grapes grown under two growing seasons at different stages...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29167678/a-radish-basic-helix-loop-helix-transcription-factor-rstt8-acts-a-positive-regulator-for-anthocyanin-biosynthesis
#8
Sun-Hyung Lim, Da-Hye Kim, Jae K Kim, Jong-Yeol Lee, Sun-Hwa Ha
The MYB-bHLH-WDR (MBW) complex activates anthocyanin biosynthesis through the transcriptional regulation. RsMYB1 has been identified as a key player in anthocyanin biosynthesis in red radish (Raphanus sativus L.), but its partner bHLH transcription factor (TF) remains to be determined. In this study, we isolated a bHLH TF gene from red radish. Phylogenetic analysis indicated that this gene belongs to the TT8 clade of the IIIF subgroup of bHLH TFs, and we thus designated this gene RsTT8. Subcellular localization analysis showed that RsTT8-sGFP was localized to the nuclei of Arabidopsis thaliana protoplasts harboring the RsTT8-sGFP construct...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29163590/multiple-copies-of-a-simple-myb-binding-site-confers-trans-regulation-by-specific-flavonoid-related-r2r3-mybs-in-diverse-species
#9
Cyril Brendolise, Richard V Espley, Kui Lin-Wang, William Laing, Yongyan Peng, Tony McGhie, Supinya Dejnoprat, Sumathi Tomes, Roger P Hellens, Andrew C Allan
In apple, the MYB transcription factor MYB10 controls the accumulation of anthocyanins. MYB10 is able to auto-activate its expression by binding its own promoter at a specific motif, the R1 motif. In some apple accessions a natural mutation, termed R6, has more copies of this motif within the MYB10 promoter resulting in stronger auto-activation and elevated anthocyanins. Here we show that other anthocyanin-related MYBs selected from apple, pear, strawberry, petunia, kiwifruit and Arabidopsis are able to activate promoters containing the R6 motif...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29162903/the-lateral-organ-boundaries-domain-gene-family-in-grapevine-genome-wide-characterization-and-expression-analyses-during-developmental-processes-and-stress-responses
#10
Jérôme Grimplet, Diana Pimentel, Patricia Agudelo-Romero, Jose Miguel Martinez-Zapater, Ana Margarida Fortes
LATERAL ORGAN BOUNDARIES (LOB) DOMAIN (LBD) constitute a family of plant-specific transcription factors with key roles in the regulation of plant organ development, pollen development, plant regeneration, pathogen response, and anthocyanin and nitrogen metabolisms. However, the role of LBDs in fruit ripening and in grapevine (Vitis vinifera L.) development and stress responses is poorly documented. By performing a model curation of LBDs in the latest genome annotation 50 genes were identified. Phylogenetic analysis showed that LBD genes can be grouped into two classes mapping on 16 out of the 19 V...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29143621/identification-and-characterization-of-regulatory-network-components-for-anthocyanin-synthesis-in-barley-aleurone
#11
Ksenia V Strygina, Andreas Börner, Elena K Khlestkina
BACKGROUND: Among natural populations, there are different colours of barley (Hordeum vulgare L.). The colour of barley grains is directly related to the accumulation of different pigments in the aleurone layer, pericarp and lemma. Blue grain colour is due to the accumulation of anthocyanins in the aleurone layer, which is dependent on the presence of five Blx genes that are not sequenced yet (Blx1, Blx3 and Blx4 genes clustering on chromosome 4HL and Blx2 and Blx5 on 7HL). Due to the health benefits of anthocyanins, blue-grained barley can be considered as a source of dietary food...
November 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29115568/radical-scavenging-linked-anti-adipogenic-activity-of-alnus-firma-extracts
#12
Sun-Il Choi, Jong Seok Lee, Sarah Lee, Jin-Ha Lee, Hee-Sun Yang, Joohong Yeo, Jong-Yea Kim, Boo-Yong Lee, Il-Jun Kang, Ok-Hwan Lee
The purpose of the present study was to investigate the antioxidant activity and anti-adipogenic effect of extracts from Alnus firma (A. firma), which is an edible plant that grows in mountainous areas. The total phenolic, flavonoid and anthocyanin content as well as the antioxidant activity of a 70% ethanolic extract of A. firma (AFE) was assessed. Furthermore, the effects of AFE on lipid accumulation and reactive oxygen species (ROS) production during adipogenesis of 3T3-L1 cells were investigated. The results revealed that the total phenolic, flavonoid and pro-anthocyanidin content of AFE as 436...
October 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29114391/erratum-the-bzip-transcription-factor-mdhy5-regulates-anthocyanin-accumulation-and-nitrate-assimilation-in-apple
#13
Jian-Ping An, Feng-Jia Qu, Ji-Fang Yao, Xiao-Na Wang, Chun-Xiang You, Xiao-Fei Wang, Yu-Jin Hao
[This corrects the article DOI: 10.1038/hortres.2017.23.].
2017: Horticulture Research
https://www.readbyqxmd.com/read/29104582/vvvhp1-2-is-transcriptionally-activated-by-vvmyba1-and-promotes-anthocyanin-accumulation-of-grape-berry-skins-via-glucose-signal
#14
Tianyu Sun, Lili Xu, Hong Sun, Qianyu Yue, Heng Zhai, Yuxin Yao
In this work, four vacuolar H(+)-PPase (VHP) genes were identified in the grape genome. Among them, VvVHP1; 2 was strongly expressed in berry skin and its expression exhibited high correlations to anthocyanin content of berry skin during berry ripening and under ABA and UVB treatments. VvVHP1; 2 was transcriptionally activated directly by VvMYBA1, and VvVHP1; 2 overexpression promoted anthocyanin accumulation in berry skins and Arabidopsis leaves; therefore, VvVHP1; 2 mediated VvMYBA1-regulated berry pigmentation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29093336/p-coumaroyl-anthocyanin-mixture-isolated-from-tuber-epidermis-of-solanum-tuberosum-attenuates-reactive-oxygen-species-and-pro-inflammatory-mediators-by-suppressing-nf-%C3%AE%C2%BAb-and-stat1-3-signaling-in-lps-induced-raw264-7-macrophages
#15
Hwi-Ho Lee, Suel-Gie Lee, Ji-Sun Shin, Ho-Young Lee, Kyungwon Yoon, Yong Woo Ji, Dae Sik Jang, Kyung-Tae Lee
Previously, we first reported the identification of four p-coumaroyl anthocyanins (petanin, peonanin, malvanin, and pelanin) from the tuber epidermis of colored potato (Solanum tuberosum L. cv JAYOUNG). In this study, we investigated the anti-oxidative and anti-inflammatory effects of a mixture of peonanin, malvanin, and pelanin (10 : 3 : 3; CAJY). CAJY displayed considerable radical scavenging capacity of 1, 1-diphenyl-2-picryl-hydrazyl (DPPH), increased mRNA levels of the catalytic and modulatory subunit of glutamate cysteine ligase, and subsequent cellular glutathione content...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29081360/-la-vie-en-rose-biosynthesis-sources-and-applications-of-betalain-pigments
#16
REVIEW
Guy Polturak, Asaph Aharoni
Betalains are tyrosine-derived red-violet and yellow pigments found exclusively in plants of the Caryophyllales order, which have drawn both scientific and economic interest. Nevertheless, research into betalain chemistry, biochemistry, and function has been limited in comparison to other major classes of plant pigments such as anthocyanins and carotenoids. The core biosynthetic pathway of this pigment class has only been fully elucidated in the past few years, opening up the possibility for betalain pigments engineering in plants and microbes...
October 25, 2017: Molecular Plant
https://www.readbyqxmd.com/read/29071176/overexpression-of-herbaceous-peony-mir156e-3p-improves-anthocyanin-accumulation-in-transgenic-arabidopsis-thaliana-lateral-branches
#17
Daqiu Zhao, Xing Xia, Mengran Wei, Jing Sun, Jiasong Meng, Jun Tao
microRNAs (miRNAs) play critical regulatory roles in plant growth and development. In the present study, the function of herbaceous peony (Paeonia lactiflora Pall.) miR156e-3p in the regulation of color formation has been investigated. Firstly, P. lactiflora miR156e-3p precursor sequence (pre-miR156e-3p) was isolated. Subsequently, the overexpression vector of pre-miR156e-3p was constructed and transformed into Arabidopsis thaliana. Moreover, the medium screening, GUS staining, polymerase chain reaction (PCR) of the GUS region and real-time quantitative PCR (qRT-PCR) of miR156e-3p all confirmed that the purpose gene had been successfully transferred into Arabidopsis plants and expressed, which resulted in apparent purple lateral branches...
December 2017: 3 Biotech
https://www.readbyqxmd.com/read/29066860/bilberry-extract-administration-prevents-retinal-ganglion-cell-death-in-mice-via-the-regulation-of-chaperone-molecules-under-conditions-of-endoplasmic-reticulum-stress
#18
Orie Nakamura, Satoru Moritoh, Kota Sato, Shigeto Maekawa, Namie Murayama, Noriko Himori, Kazuko Omodaka, Tetsuya Sogon, Toru Nakazawa
PURPOSE: To investigate the effect of bilberry extract anthocyanins on retinal ganglion cell (RGC) survival after optic nerve crush. Additionally, to determine details of the mechanism of the neuroprotective effect of bilberry extract anthocyanins and the involvement of endoplasmic reticulum stress suppression in the mouse retina. MATERIALS AND METHODS: Anthocyanins in bilberry extract (100 mg/kg/day or 500 mg/kg/day) were administrated orally to C57BL/6J mice. The expression levels of various molecular chaperones were assessed with quantitative reverse-transcription polymerase chain reaction, Western blotting, and immunohistochemistry...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29057484/biochemical-and-functional-characterization-of-acufgt3a-a-galactosyltransferase-involved-in-anthocyanin-biosynthesis-in-the-red-fleshed-kiwifruit-actinidia-chinensis
#19
Yanfei Liu, Bin Zhou, Yingwei Qi, Cuihua Liu, Zhande Liu, Xiaolin Ren
Much of the diversity of anthocyanin pigmentation in plant tissues is due to the action of glycosyltransferases, which attach sugar moieties to the anthocyanin aglycone. This step can increase both their solubility and stability. We investigated the pigmentation of the outer and inner pericarps of developing fruit of the red-fleshed kiwifruit Actinidia chinensis cv. 'Hongyang'. The results show that the red color of the inner pericarp is due to anthocyanin. Based on expression analyses of structural genes, AcUFGT was shown to be the key gene involved in the anthocyanin biosynthetic pathway...
October 23, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29023752/a-novel-r3-myb-transcriptional-repressor-associated-with-the-loss-of-floral-pigmentation-in-iochroma
#20
Daniel J Gates, Bradley J S C Olson, Tom E Clemente, Stacey D Smith
Losses of floral pigmentation represent one of the most common evolutionary transitions in flower color, yet the genetic basis for these changes has been elucidated in only a handful of cases. Here we used crossing studies, bulk-segregant RNA sequencing, phylogenetic analyses and functional tests to identify the gene(s) responsible for the transition to white flowers in Iochroma loxense. Crosses between I. loxense and its blue-flowered sister species, I. cyaneum, suggested that a single locus controls the flower color difference and that the white allele causes a nearly complete loss of pigmentation...
October 12, 2017: New Phytologist
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