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Anthocyanin, transcription

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https://www.readbyqxmd.com/read/28086798/genome-wide-association-analysis-of-seedling-traits-in-diverse-sorghum-germplasm-under-thermal-stress
#1
Ratan Chopra, Gloria Burow, John J Burke, Nicholas Gladman, Zhanguo Xin
BACKGROUND: Climate variability due to fluctuation in temperature is a worldwide concern that imperils crop production. The need to understand how the germplasm variation in major crops can be utilized to aid in discovering and developing breeding lines that can withstand and adapt to temperature fluctuations is more necessary than ever. Here, we analyzed the genetic variation associated with responses to thermal stresses in a sorghum association panel (SAP) representing major races and working groups to identify single nucleotide polymorphisms (SNPs) that are associated with resilience to temperature stress in a major cereal crop...
January 13, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28081181/aronia-melanocarpa-extract-ameliorates-hepatic-lipid-metabolism-through-ppar%C3%AE-2-downregulation
#2
Chung-Hwa Park, Jung-Hee Kim, Eun Byul Lee, Wonhee Hur, Oh-Joo Kwon, Hyoung-Jin Park, Seung Kew Yoon
Nonalcoholic fatty liver disease (NAFLD) is a hepatic manifestation of metabolic syndrome. Studies have demonstrated that anthocyanin-rich foods may improve hyperlipidemia and ameliorate hepatic steatosis. Here, effects of Aronia melanocarpa (AM), known to be rich of anthocyanins, on hepatic lipid metabolism and adipogenic genes were determined. AM was treated to C57BL/6N mice fed with high fat diet (HFD) or to FL83B cells treated with free fatty acid (FFA). Changes in levels of lipids, enzymes and hormones were observed, and expressions of adipogenic genes involved in hepatic lipid metabolism were detected by PCR, Western blotting and luciferase assay...
2017: PloS One
https://www.readbyqxmd.com/read/28053648/harnessing-anthocyanin-rich-fruit-a-visible-reporter-for-tracing-virus-induced-gene-silencing-in-pepper-fruit
#3
Jihyun Kim, Minkyu Park, Eun Soo Jeong, Je Min Lee, Doil Choi
BACKGROUND: Virus-induced gene silencing (VIGS) has become a powerful tool for post-genomic technology in plant species. This is important, especially in select plants, such as the pepper plant, that are recalcitrant to Agrobacterium-mediated transformation. Although VIGS in plants has been widely employed as a powerful tool for functional genomics, scattering phenotypic effects by uneven gene silencing has been implemented in order to overcome challenges in experiments with fruit tissues...
2017: Plant Methods
https://www.readbyqxmd.com/read/28051907/novel-r2r3-myb-transcription-factors-from-prunus-americana-regulate-differential-patterns-of-anthocyanin-accumulation-in-tobacco-and-citrus
#4
Kasturi Dasgupta, Roger Thilmony, Ed Stover, Maria Luiza Oliveira, James Thomson
The level of anthocyanins in plants vary widely among cultivars, developmental stages and environmental stimuli. Previous studies have reported that the expression of various MYBs regulate anthocyanin pigmentation during growth and development. Here we examine the activity of three novel R2R3-MYB transcription factor (TF) genes, PamMybA.1, PamMybA.3 and PamMybA.5 from Prunus americana. The anthocyanin accumulation patterns mediated by CaMV double35S promoter (db35Sp) controlled expression of the TFs in transgenic tobacco were compared to citrus-MoroMybA, Arabidopsis-AtMybA1 and grapevine-VvMybA1 transgenics during their entire growth cycles...
January 4, 2017: GM Crops & Food
https://www.readbyqxmd.com/read/28025485/overexpression-of-amrosea1-gene-confers-drought-and-salt-tolerance-in-rice
#5
Mingzhu Dou, Sanhong Fan, Suxin Yang, Rongfeng Huang, Huiyun Yu, Xianzhong Feng
Ectopic expression of the MYB transcription factor of AmROSEA1 from Antirrhinum majus has been reported to change anthocyanin and other metabolites in several species. In this study, we found that overexpression of AmRosea1 significantly improved the tolerance of transgenic rice to drought and salinity stresses. Transcriptome analysis revealed that a considerable number of stress-related genes were affected by exogenous AmRosea1 during both drought and salinity stress treatments. These affected genes are involved in stress signal transduction, the hormone signal pathway, ion homeostasis and the enzymes that remove peroxides...
December 22, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28018399/the-onion-allium-cepa-l-r2r3-myb-gene-myb1-regulates-anthocyanin-biosynthesis
#6
Kathy E Schwinn, Hanh Ngo, Fernand Kenel, David A Brummell, Nick W Albert, John A McCallum, Meeghan Pither-Joyce, Ross N Crowhurst, Colin Eady, Kevin M Davies
Bulb color is an important consumer trait for onion (Allium cepa L., Allioideae, Asparagales). The bulbs accumulate a range of flavonoid compounds, including anthocyanins (red), flavonols (pale yellow), and chalcones (bright yellow). Flavonoid regulation is poorly characterized in onion and in other plants belonging to the Asparagales, despite being a major plant order containing many important crop and ornamental species. R2R3-MYB transcription factors associated with the regulation of distinct branches of the flavonoid pathway were isolated from onion...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28011403/cyanidin-3-o-glucoside-ameliorates-palmitate-induced-insulin-resistance-by-modulating-irs-1-phosphorylation-and-release-of-endothelial-derived-vasoactive-factors
#7
Deborah Fratantonio, Francesco Cimino, Maria Sofia Molonia, Daniela Ferrari, Antonella Saija, Fabio Virgili, Antonio Speciale
Increased plasma levels of free fatty acids, including palmitic acid (PA), cause insulin resistance in endothelium characterized by a decreased synthesis of insulin-mediated vasodilator nitric oxide (NO), and by an increased production of the vasoconstrictor protein, endothelin-1. Several in vitro and in vivo studies suggest that anthocyanins, natural phenols commonly present in food and vegetables from Mediterranean Diet, exert significant cardiovascular health-promoting activities. These effects are possibly mediated by a positive regulation of the transcription factor Nrf2 and activation of cellular antioxidant and cytoprotective genes...
December 21, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27999588/divergent-regulation-of-cbf-regulon-on-cold-tolerance-and-plant-phenotype-in-cassava-overexpressing-arabidopsis-cbf3-gene
#8
Dong An, Qiuxiang Ma, Wei Yan, Wenzhi Zhou, Guanghua Liu, Peng Zhang
Cassava is a tropical origin plant that is sensitive to chilling stress. In order to understand the CBF cold response pathway, a well-recognized regulatory mechanism in temperate plants, in cassava, overexpression of an Arabidopsis CBF3 gene is studied. This gene renders cassava increasingly tolerant to cold and drought stresses but is associated with retarded plant growth, leaf curling, reduced storage root yield, and reduced anthocyanin accumulation in a transcript abundance-dependent manner. Physiological analysis revealed that the transgenic cassava increased proline accumulation, reduced malondialdehyde production, and electrolyte leakage under cold stress...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27995376/double-stranded-rna-binding-protein-drb3-negatively-regulates-anthocyanin-biosynthesis-by-modulating-pap1-expression-in-arabidopsis-thaliana
#9
Hikaru Sawano, Takuma Matsuzaki, Tomoyuki Usui, Midori Tabara, Akihito Fukudome, Akihiro Kanaya, Daichi Tanoue, Akihiro Hiraguri, Gorou Horiguchi, Misato Ohtani, Taku Demura, Toshinori Kozaki, Kazuo Ishii, Hiromitsu Moriyama, Toshiyuki Fukuhara
The model plant Arabidopsis thaliana has five double-stranded RNA-binding proteins (DRB1-DRB5), two of which, DRB1 and DRB4, are well characterized. In contrast, the functions of DRB2, DRB3 and DRB5 have yet to be elucidated. In this study, we tried to uncover their functions using drb mutants and DRB-over-expressed lines. In over-expressed lines of all five DRB genes, the over-expression of DRB2 or DRB3 (DRB2ox or DRB3ox) conferred a downward-curled leaf phenotype, but the expression profiles of ten small RNAs were similar to that of the wild-type (WT) plant...
January 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/27990149/genistein-a-novel-anthocyanin-synthesis-promoter-that-directly-regulates-biosynthetic-genes-in-red-cabbage-in-a-light-dependent-way
#10
Na Zhang, Yan Qi, Hai-Jun Zhang, Xiaoyun Wang, Hongfei Li, Yantong Shi, Yang-Dong Guo
Genistein (GNT), an isoflavone, is used in the clinical treatment of various health disorders. GNT is found in primary food source plants and some medical plants. However, studies on the functions of GNT in plants are rarely reported. In this study, we demonstrated that GNT plays an important role in promoting anthocyanin accumulation in red cabbage. GNT solutions (10, 20, 30, 40, and 50 mg/L) as foliar fertilizers were applied to red cabbage. Consequently, anthocyanin accumulation in red cabbage increased in a light-dependent manner...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27984587/identification-of-a-novel-l-rhamnose-uptake-transporter-in-the-filamentous-fungus-aspergillus-niger
#11
Jasper Sloothaak, Dorett I Odoni, Vitor A P Martins Dos Santos, Peter J Schaap, Juan Antonio Tamayo-Ramos
The study of plant biomass utilization by fungi is a research field of great interest due to its many implications in ecology, agriculture and biotechnology. Most of the efforts done to increase the understanding of the use of plant cell walls by fungi have been focused on the degradation of cellulose and hemicellulose, and transport and metabolism of their constituent monosaccharides. Pectin is another important constituent of plant cell walls, but has received less attention. In relation to the uptake of pectic building blocks, fungal transporters for the uptake of galacturonic acid recently have been reported in Aspergillus niger and Neurospora crassa...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27979226/fractionation-enzyme-inhibitory-and-cellular-antioxidant-activity-of-bioactives-from-purple-sweet-potato-ipomoea-batatas
#12
Tuba Esatbeyoglu, Miriam Rodríguez-Werner, Anke Schlösser, Peter Winterhalter, Gerald Rimbach
Sweet potato (Ipomoea batatas L.) is mainly cultivated in Asia. The deep purple color of purple sweet potato (PSP) is due to the high content of acylated anthocyanins. In the present study, PSP-derived polyphenols were identified using HPLC-PDA and HPLC-ESI-MS(n) analyses. After concentration of the polyphenols from PSP, preparative separation into two fractions, designated anthocyanins (AF) and copigments (CF), was carried out using adsorptive membrane chromatography. In enzyme inhibitory assays, all PSP samples inhibited the enzymes α-amylase, α-glucosidase and xanthine oxidase...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27966737/myba2-gene-involved-in-anthocyanin-and-flavonol-biosynthesis-pathways-in-grapevine
#13
T Q Niu, Z D Gao, P F Zhang, X J Zhang, M Y Gao, W Ji, W X Fan, P F Wen
MYBA2 transcription factor (Myb-related gene) affects the coloring in grapevine berry and plays an important role in the biosynthesis of anthocyanin. The MYBA2 gene was cloned from Vitis vinifera L. cv. Cabernet Sauvignon and polyclonal antibodies for VvmybA2 were prepared. The VvmybA2 gene expression patterns were observed in seven tissues (the leaf, stem, flower, bud, root, berry, and tendril) and during the berry development stage at transcriptional and translational levels, respectively. The results indicated that the expression of VvmybA2 was approximately 11-fold higher in the berry than that in the other six tissues, and increased rapidly from 60 days after full bloom reaching a maximum on day 80...
December 2, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27920784/the-arabidopsis-angustifolia3-yoda-gene-cascade-induces-anthocyanin-accumulation-by-regulating-sucrose-levels
#14
Lai-Sheng Meng, Ying-Qiu Li, Meng-Qian Liu, Ji-Hong Jiang
Anthocyanin accumulation specifically depends on sucrose (Suc) signaling/levels. However, the gene cascades specifically involved in the Suc signaling/level-mediated anthocyanin biosynthetic pathway are still unknown. Arabidopsis ANGUSTIFOLIA3 (AN3), a transcription coactivator, is involved in the regulation of leaf shape and drought tolerance. Recently, an AN3-CONSTITUTIVE PHOTOMORPHOGENIC 1 gene cascade has been reported to regulate the light signaling-mediated anthocyanin accumulation. Target gene analysis indicates that AN3 is associated with the YODA (YDA) promoter, a mitogen-activated protein kinase kinase kinase, in vivo for inducing anthocyanin accumulation...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27909441/apple-f-box-protein-mdmax2-regulates-plant-photomorphogenesis-and-stress-response
#15
Jian-Ping An, Rui Li, Feng-Jia Qu, Chun-Xiang You, Xiao-Fei Wang, Yu-Jin Hao
MAX2 (MORE AXILLARY GROWTH2) is involved in diverse physiological processes, including photomorphogenesis, the abiotic stress response, as well as karrikin and strigolactone signaling-mediated shoot branching. In this study, MdMAX2, an F-box protein that is a homolog of Arabidopsis MAX2, was identified and characterized. Overexpression of MdMAX2 in apple calli enhanced the accumulation of anthocyanin. Ectopic expression of MdMAX2 in Arabidopsis exhibited photomorphogenesis phenotypes, including increased anthocyanin content and decreased hypocotyl length...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27896020/identification-of-phenolic-secondary-metabolites-from-schotia-brachypetala-sond-fabaceae-and-demonstration-of-their-antioxidant-activities-in-caenorhabditis-elegans
#16
Mansour Sobeh, Esraa ElHawary, Herbenya Peixoto, Rola M Labib, Heba Handoussa, Noha Swilam, Ahmed H El-Khatib, Farukh Sharapov, Tamer Mohamed, Sonja Krstin, Michael W Linscheid, Abdel Nasser Singab, Michael Wink, Nahla Ayoub
BACKGROUND: Schotia brachypetala Sond. (Fabaceae) is an endemic tree of Southern Africa whose phytochemistry and pharmacology were slightly studied. The present work aimed at profiling the major phenolics compounds present in the hydro-alcohol extract from S. brachypetala leaves (SBE) using LC/HRESI/MS/MS and NMR and prove their antioxidant capabilities using novel methods. METHODS: In vitro assays; DPPH, TEAC persulfate decolorizing kinetic and FRAP assays, and in vivo assays: Caenorhabditis elegans strains maintenance, Intracellular ROS in C...
2016: PeerJ
https://www.readbyqxmd.com/read/27895648/grape-ripening-is-regulated-by-deficit-irrigation-elevated-temperatures-according-to-cluster-position-in-the-canopy
#17
Olfa Zarrouk, Cecilia Brunetti, Ricardo Egipto, Carla Pinheiro, Tânia Genebra, Antonella Gori, Carlos M Lopes, Massimiliano Tattini, M Manuela Chaves
The impact of water deficit on berry quality has been extensively investigated during the last decades. Nonetheless, there is a scarcity of knowledge on the performance of varieties exposed to a combination of high temperatures/water stress during the growing season and under vineyard conditions. The objective of this research was to investigate the effects of two irrigation regimes, sustained deficit irrigation (SDI, 30% ETc) and regulated deficit irrigation (RDI, 15% ETc) and of two cluster positions within the canopy (east- and west-exposed sides) on berry ripening in red Aragonez (Tempranillo) grapevines...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27879624/transcriptome-analysis-identifies-key-candidate-genes-mediating-purple-ovary-coloration-in-asiatic-hybrid-lilies
#18
Leifeng Xu, Panpan Yang, Suxia Yuan, Yayan Feng, Hua Xu, Yuwei Cao, Jun Ming
Lily tepals have a short lifespan. Once the tepals senesce, the ornamental value of the flower is lost. Some cultivars have attractive purple ovaries and fruits which greatly enhance the ornamental value of Asiatic hybrid lilies. However, little is known about the molecular mechanisms of anthocyanin biosynthesis in Asiatic hybrid lily ovaries. To investigate the transcriptional network that governs purple ovary coloration in Asiatic hybrid lilies, we obtained transcriptome data from green ovaries (S1) and purple ovaries (S2) of Asiatic "Tiny Padhye"...
November 20, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27872628/proteomics-and-ssh-analyses-of-ala-promoted-fruit-coloration-and-evidence-for-the-involvement-of-a-mads-box-gene-mdmads1
#19
Xinxin Feng, Yuyan An, Jie Zheng, Miao Sun, Liangju Wang
Skin color is a key quality attribute of fruits and how to improve fruit coloration has long been a major concern. 5-Aminolevulinic acid (ALA), a natural plant growth regulator, can significantly increase anthocyanin accumulation in fruit skin and therefore effectively improve coloration of many fruits, including apple. However, the molecular mechanism how ALA stimulates anthocyanin accumulation in fruit skin remains unknown. Here, we investigated the impact of ALA on apple skin at the protein and mRNA levels...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27858514/involvement-of-sth7-in-light-adapted-development-in-arabidopsis-thaliana-promoted-by-both-strigolactone-and-karrikin
#20
Jutiporn Thussagunpanit, Yuko Nagai, Miyu Nagae, Kiyoshi Mashiguchi, Nobutaka Mitsuda, Masaru Ohme-Takagi, Takeshi Nakano, Hidemitsu Nakamura, Tadao Asami
Strigolactones (SLs) and karrikins (KARs) regulate photomorphogenesis. GR24, a synthetic SL and KAR1, a KAR, inhibit the hypocotyl elongation of Arabidopsis thaliana in a weak light. GR24 and KAR1 up-regulate the expression of STH7, encoding a transcription factor belonging to the double B-box zinc finger subfamily. In this study, we used STH7-overexpressing (STH7ox) lines and functionally defective STH7 (STH7-SRDX) mutants to investigate roles of SLs and KARs in photomorphogenesis of Arabidopsis. Hypocotyl elongation of STH7-SRDX mutants was less sensitive to both GR24 and KAR1 treatment than that of wild-type Arabidopsis under weak light conditions...
November 18, 2016: Bioscience, Biotechnology, and Biochemistry
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