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Anthocyanin, regulation

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https://www.readbyqxmd.com/read/28423209/r2r3-myb-transcription-factor-mdmyb73-is-involved-in-malate-accumulation-and-vacuolar-acidification-in-apple
#1
Da-Gang Hu, Yuan-Yuan Li, Quan-Yan Zhang, Ming Li, Cui-Hui Sun, Jian-Qiang Yu, Yu-Jin Hao
Malate, the predominant organic acid in many fruits, is a crucial component of fruit organoleptic quality, including taste and flavor. The genetic and environmental mechanisms affecting malate metabolism in fruit cells have been studied extensively. However, the transcriptional regulation of malate-metabolizing enzymes and vacuolar transporters remains poorly understood. Our previous studies demonstrated that MdMYB1 modulates anthocyanin accumulation and vacuolar acidification, by directly activating vacuolar transporters, including MdVHA-B1, MdVHA-E, MdVHP1, and MdtDT...
April 19, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28422049/regulation-of-anthocyanin-biosynthesis-in-purple-leaves-of-zijuan-tea-camellia-sinensis-var-kitamura
#2
Lingxia Wang, Dezhuo Pan, Meng Liang, Yakubu Saddeeq Abubakar, Jian Li, Jinke Lin, Shipin Chen, Wei Chen
Plant anthocyanin biosynthesis is well understood, but the regulatory mechanism in purple foliage tea remains unclear. Using isobaric tag for relative and absolute quantification (iTRAQ), 815 differential proteins were identified in the leaves of Zijuan tea, among which 20 were associated with the regulation of anthocyanin metabolism. We found that the abundances of anthocyanin synthesis-related enzymes such as chalcone synthase, chalcone isomerase, dihydroflavonol 4-reductase and anthocyanin synthetase, as well as anthocyanin accumulation-related UDP-glucosyl transferase and ATP-binding cassette (ABC) transporters in the purple leaves were all significantly higher than those in the green leaves...
April 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28421329/characterization-of-two-tt2-type-myb-transcription-factors-regulating-proanthocyanidin-biosynthesis-in-tetraploid-cotton-gossypium-hirsutum
#3
Nan Lu, Marissa Roldan, Richard A Dixon
Two TT2-type MYB transcription factors identified from tetraploid cotton are involved in regulating proanthocyanidin biosynthesis, providing new strategies for engineering condensed tannins in crops. Proanthocyanidins (PAs), also known as condensed tannins, are important secondary metabolites involved in stress resistance in plants, and are health supplements that help to reduce cholesterol levels. As one of the most widely grown crops in the world, cotton provides the majority of natural fabrics and is a supplemental food for ruminant animals...
April 18, 2017: Planta
https://www.readbyqxmd.com/read/28419463/profiling-of-anthocyanins-in-transgenic-purple-fleshed-sweet-potatoes-by-hplc-ms-ms
#4
Jingqiu Ge, Yijie Hu, Hongxia Wang, Yuanshe Huang, Peng Zhang, Zhihua Liao, Min Chen
BACKGROUND: Anthocyanins in Purple-fleshed Sweet Potato (PSP) are beneficial to human health. The leaf color (Lc) gene is a transcription factor involved in regulating anthocyanin biosynthesis. The anthocyanin profiles of wild-type PSP of Ayamurasaki and its three Lc-transgenic lines were investigated by HPLC-MS/MS. And in vitro antioxidant activities of wild-type and Lc-transgenic lines, including reducing power activity, DPPH radical scavenging activity, hydroxyl radical scavenging activity, linoleic acid autoxidation inhibition activity, ABTS free radical scavenging activity and oxygen radical absorbance capacity activity, were measured...
April 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28419325/dissecting-molecular-and-physiological-response-mechanisms-to-high-solar-radiation-in-cyanic-and-acyanic-leaves-a-case-study-on-red-and-green-basil
#5
Massimiliano Tattini, Federico Sebastiani, Cecilia Brunetti, Alessio Fini, Sara Torre, Antonella Gori, Mauro Centritto, Francesco Ferrini, Marco Landi, Lucia Guidi
Photosynthetic performance and the expression of genes involved in light signaling and the biosynthesis of isoprenoids and phenylpropanoids were analysed in green ('Tigullio', TIG) and red ('Red Rubin', RR) basil. The aim was to detect the physiological and molecular response mechanisms to high sunlight. The attenuation of blue-green light by epidermal anthocyanins was shown to evoke shade-avoidance responses with consequential effects on leaf morpho-anatomical traits and gas exchange performance. Red basil had a lower mesophyll conductance, partially compensated by the less effective control of stomatal movements, in comparison with TIG...
April 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28412633/relationship-among-color-development-anthocyanin-and-pigment-related-gene-expression-in-crimson-seedless-grapes-treated-with-abscisic-acid-and-sucrose
#6
Daniela Olivares, Carolina Contreras, Victoria Muñoz, Sebastián Rivera, Mauricio González-Agüero, Julio Retamales, Bruno G Defilippi
'Crimson Seedless' is one of the most important table grape varieties in Chile, but under certain environmental conditions, the fruit exhibits inadequate red color development, causing economic losses due to lower product quality. The use of plant growth regulators, such as abscisic acid (ABA) and ethylene, during development increases the anthocyanin content of the skin, improving the color of the berry. Recently, sucrose has been identified as a signaling molecule capable of regulating the expression of genes of the anthocyanin biosynthesis pathway...
April 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28412546/prefoldins-negatively-regulate-cold-acclimation-in-arabidopsis-thaliana-by-promoting-nuclear-proteasome-mediated-hy5-degradation
#7
Carlos Perea-Resa, Miguel A Rodríguez-Milla, Elisa Iniesto, Vicente Rubio, Julio Salinas
The process of cold acclimation is an important adaptive response whereby many plants from temperate regions increase their freezing tolerance after being exposed to low-nonfreezing temperatures. The correct development of this response relies on the precise accumulation of a number of transcription factors that regulate the appropriate patterns of cold-responsive gene expression. Multiple studies have revealed a variety of molecular mechanisms involved in promoting the accumulation of these transcription factors...
April 12, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28399809/transcriptomic-profiling-of-two-pak-choi-varieties-with-contrasting-anthocyanin-contents-provides-an-insight-into-structural-and-regulatory-genes-in-anthocyanin-biosynthetic-pathway
#8
Lu Zhang, Bin Xu, Tao Wu, Yanfang Yang, Lianxue Fan, Muxuan Wen, Jiaxin Sui
BACKGROUND: The accumulation of anthocyanin in horticultural crops not only improves their stress tolerances but also their nutritional values. Many key regulatory and structural genes in anthocyanin biosynthesis have been identified in model plants, but limited information is available for non-model plant species featured with colored leaves. In this study, two Pak Choi varieties with green or purple leaves were selected to analyze the anthocyanin biosynthesis through RNA-Seq. RESULTS: A total of 2475 unigenes were differentially expressed between these tested varieties, including 1303 down-regulated and 1172 up-regulated genes in the purple-leafed one...
April 11, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28393456/blackcurrant-anthocyanins-modulate-ccl11-secretion-and-suppress-allergic-airway-inflammation
#9
Odette M Shaw, Tafadzwa Nyanhanda, Tony K McGhie, Jacquie L Harper, Roger D Hurst
CCL11, a chemokine, is linked to the early development of airways eosinophilia in allergic asthma. Therefore, CCL11 production is a target for abrogating eosinophilic-driven airway inflammation. Blackcurrants are high in compounds that regulate inflammation, particularly anthocyanins. In this study we investigated the effect of oral blackcurrant supplementation on allergen-induced eosinophilia and CCL11 production; we also profiled key compounds in blackcurrants that were linked to this effect. 10 mg/kg (total anthocyanins) of a commercially available, anthocyanin-rich New Zealand 'Ben Ard' blackcurrant extract ('Currantex 30') attenuated ovalbumin-induced inflammation, eosinophilia (by 52...
April 9, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28392796/spatiotemporal-transcriptome-analysis-provides-insights-into-bicolor-tepal-development-in-lilium-tiny-padhye
#10
Leifeng Xu, Panpan Yang, Yayan Feng, Hua Xu, Yuwei Cao, Yuchao Tang, Suxia Yuan, Xinyan Liu, Jun Ming
The bicolor Asiatic hybrid lily cultivar "Tiny Padhye" is an attractive variety because of its unique color pattern. During its bicolor tepal development, the upper tepals undergo a rapid color change from green to white, while the tepal bases change from green to purple. However, the molecular mechanisms underlying these changes remain largely uncharacterized. To systematically investigate the dynamics of the lily bicolor tepal transcriptome during development, we generated 15 RNA-seq libraries from the upper tepals (S2-U) and basal tepals (S1-D, S2-D, S3-D, and S4-D) of Lilium "Tiny Padhye...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28389868/remodelling-of-lace-plant-leaves-antioxidants-and-ros-are-key-regulators-of-programmed-cell-death
#11
Adrian N Dauphinee, Jacob I Fletcher, Georgia L Denbigh, Christian R Lacroix, Arunika H L A N Gunawardena
Antioxidants and reactive oxygen species are integral for programmed cell death signaling during perforation formation in the lace plant ( Aponogeton madagascariensis ). The lace plant is an excellent model system for studying developmentally regulated programmed cell death (PCD). During early lace plant leaf development, PCD systematically deletes cells resulting in a perforated leaf morphology that is unique in planta. A distinct feature in young lace plant leaves is an abundance of anthocyanins, which have antioxidant properties...
April 7, 2017: Planta
https://www.readbyqxmd.com/read/28386931/subfunctionalization-of-duplicate-myb-genes-in-solanum-commersonii-generated-the-cold-induced-scan2-and-the-anthocyanin-regulator-scan1
#12
Vincenzo D'Amelia, Riccardo Aversano, Alessandra Ruggiero, Giorgia Batelli, Ingo Appelhagen, Claudio Dinacci, Lionel Hill, Cathie Martin, Domenico Carputo
Wild potato species are useful sources allelic diversity and loci lacking in the cultivated potato. In these species, the presence of anthocyanins in leaves has been associated with a greater tolerance to cold stress. However, the molecular mechanisms that allow potatoes to withstand cold exposure remain unclear. Here, we show that the expression of AN2, a MYB transcription factor, is induced by low temperatures in wild, cold tolerant Solanum commersonii, and not in susceptible S. tuberosum varieties. We found that AN2 is a paralog of the potato anthocyanin regulator AN1, showing similar interaction ability with bHLH co-partners...
April 7, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28373746/cyanidin-3-o-glucoside-modulates-the-in-vitro-inflammatory-crosstalk-between-intestinal-epithelial-and-endothelial-cells
#13
Daniela Ferrari, Francesco Cimino, Deborah Fratantonio, Maria Sofia Molonia, Romina Bashllari, Rossana Busà, Antonella Saija, Antonio Speciale
Intestinal epithelium represents a protective physical barrier and actively contributes to the mucosal immune system. Polarized basolateral intestinal secretion of inflammatory mediators, followed by activation of NF-κB signaling and inflammatory pathways in endothelial cells, efficiently triggers extravasation of neutrophils from the vasculature, therefore contributing to the development and maintenance of intestinal inflammation. Proper regulation of NF-κB activation at the epithelial interface is crucial for the maintenance of physiological tissue homeostasis...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28370629/a-group-of-grapevine-myba-transcription-factors-located-in-chromosome-14-control-anthocyanin-synthesis-in-vegetative-organs-with-different-specificities-compared-to-the-berry-color-locus
#14
José Tomás Matus, Erika Cavallini, Rodrigo Loyola, Janine Höll, Laura Finezzo, Silvia Dal Santo, Sandrine Vialet, Mauro Commisso, Federica Roman, Andrea Schubert, José Antonio Alcalde, Jochen Bogs, Agnès Ageorges, Giovanni Battista Tornielli, Patricio Arce-Johnson
Grapevine organs accumulate anthocyanins in a cultivar-specific and environmentally induced manner. The MYBA1-A2 genes within the berry color locus in chromosome 2 represent the major genetic determinants of fruit color. The simultaneous occurrence of transposon insertions and point mutations in these genes is responsible for most white-skinned phenotypes. However, red pigmentation found in vegetative organs suggests the presence of additional regulators. This work describes a genomic region of chromosome 14 containing three closely related R2R3-MYB genes, named MYBA5, MYBA6 and MYBA7...
April 2, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28345675/a-myb-transcription-factor-dcmyb6-is-involved-in-regulating-anthocyanin-biosynthesis-in-purple-carrot-taproots
#15
Zhi-Sheng Xu, Kai Feng, Feng Que, Feng Wang, Ai-Sheng Xiong
Carrots are widely grown and enjoyed around the world. Purple carrots accumulate rich anthocyanins in the taproots, while orange, yellow, and red carrots accumulate rich carotenoids in the taproots. Our previous studies indicated that variation in the activity of regulatory genes may be responsible for variations in anthocyanin production among various carrot cultivars. In this study, an R2R3-type MYB gene, designated as DcMYB6, was isolated from a purple carrot cultivar. In a phylogenetic analysis, DcMYB6 was grouped into an anthocyanin biosynthesis-related MYB clade...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344589/characterization-of-genes-encoding-key-enzymes-involved-in-anthocyanin-metabolism-of-kiwifruit-during-storage-period
#16
Boqiang Li, Yongxiu Xia, Yuying Wang, Guozheng Qin, Shiping Tian
'Hongyang' is a red fleshed kiwifruit with high anthocyanin content. In this study, we mainly investigated effects of different temperatures (25 and 0°C) on anthocyanin biosynthesis in harvested kiwifruit, and characterized the genes encoding key enzymes involved in anthocyanin metabolism, as well as evaluated the mode of the action, by which low temperature regulates anthocyanin accumulation in 'Hongyang' kiwifruit during storage period. The results showed that low temperature could effectively enhance the anthocyanin accumulation of kiwifruit in the end of storage period (90 days), which related to the increase in mRNA levels of ANS1, ANS2, DRF1, DRF2, and UGFT2...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28338881/mdhb1-down-regulation-activates-anthocyanin-biosynthesis-in-the-white-fleshed-apple-cultivar-granny-smith
#17
Yonghua Jiang, Cuihua Liu, Dan Yan, Xiaohong Wen, Yanli Liu, Haojie Wang, Jieyu Dai, Yujie Zhang, Yanfei Liu, Bin Zhou, Xiaolin Ren
Coloration in apple (Malus×domestica) flesh is mainly caused by the accumulation of anthocyanin. Anthocyanin is biosynthesized through the flavonoid pathway and regulated by MYB, bHLH, and WD40 transcription factors (TFs). Here, we report that the HD-Zip I TF MdHB1 was also involved in the regulation of anthocyanin accumulation. MdHB1 silencing caused the accumulation of anthocyanin in 'Granny Smith' flesh, whereas its overexpression reduced the flesh content of anthocyanin in 'Ballerina' (red-fleshed apple)...
February 1, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28335727/overexpression-of-snapdragon-delila-del-gene-in-tobacco-enhances-anthocyanin-accumulation-and-abiotic-stress-tolerance
#18
Aung Htay Naing, Kyeung Il Park, Trinh Ngoc Ai, Mi Young Chung, Jeung Sul Han, Young-Wha Kang, Ki Byung Lim, Chang Kil Kim
BACKGROUND: Rosea1 (Ros1) and Delila (Del) co-expression controls anthocyanin accumulation in snapdragon flowers, while their overexpression in tomato strongly induces anthocyanin accumulation. However, little data exist on how Del expression alone influences anthocyanin accumulation. RESULTS: In tobacco (Nicotiana tabacum 'Xanthi'), Del expression enhanced leaf and flower anthocyanin production through regulating NtCHS, NtCHI, NtF3H, NtDFR, and NtANS transcript levels...
March 23, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28330557/loss-of-anthocyanins-and-modification-of-the-anthocyanin-profiles-in-grape-berries-of-malbec-and-bonarda-grown-under-high-temperature-conditions
#19
Inés de Rosas, María Teresa Ponce, Emiliano Malovini, Leonor Deis, Bruno Cavagnaro, Pablo Cavagnaro
Malbec and Bonarda are the two most widely cultivated grape varieties in Argentina, and their derived red wines are recognized worldwide, being their intense color a major quality trait. The temperature during fruit ripening conditions berries color intensity. In the main viticulture region of Malbec and Bonarda a 2-3°C increase in temperature has been predicted for the upcoming years as consequence of the global climate change. In the present study, this predicted temperature raise was simulated under field-crop conditions, and its effect on anthocyanin pigmentation in berries of Malbec and Bonarda was monitored by HPLC analysis throughout the ripening process, in two growing seasons...
May 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28327625/early-metabolic-and-transcriptional-variations-in-fruit-of-natural-white-fruited-fragaria-vesca-genotypes
#20
Katja Härtl, Alisandra Denton, Katrin Franz-Oberdorf, Thomas Hoffmann, Melanie Spornraft, Björn Usadel, Wilfried Schwab
Strawberry fruits (Fragaria vesca) are valued for their sweet fruity flavor, juicy texture, and characteristic red color caused by anthocyanin pigments. To gain a deeper insight into the regulation of anthocyanin biosynthesis, we performed comparative metabolite profiling and transcriptome analyses of one red-fruited and two natural white-fruited strawberry varieties in two tissues and three ripening stages. Developing fruit of the three genotypes showed a distinctive pattern of polyphenol accumulation already in green receptacle and achenes...
March 22, 2017: Scientific Reports
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