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Anthocyanin, regulation

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https://www.readbyqxmd.com/read/27920784/the-arabidopsis-angustifolia3-yoda-gene-cascade-induces-anthocyanin-accumulation-by-regulating-sucrose-levels
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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/27867356/cyanidin-3-o-glucoside-protects-against-1-3-dichloro-2-propanol-induced-reduction-of-progesterone-by-up-regulation-of-steroidogenic-enzymes-and-camp-level-in-leydig-cells
#7
Jianxia Sun, Wei Xu, Cuijuan Zhu, Yunfeng Hu, Xinwei Jiang, Shiyi Ou, Zhijian Su, Yadong Huang, Rui Jiao, Weibin Bai
1,3-Dichloro-2-propanol (1,3-DCP) is a food processing contaminant and has been shown to perturb male reproductive function. Cyanidin-3-O-glucoside (C3G), an anthocyanin antioxidant, is reported to have protective effects on many organs. However, it remains unclear whether C3G protects against chemical-induced reproductive toxicity. The present study was therefore to investigate the intervention of C3G on 1,3-DCP-induced reproductive toxicity in R2C Leydig cells. Results demonstrated that C3G inhibited the 1,3-DCP-induced cytotoxicity and cell shape damage with the effective doses being ranging from 10 to 40 μmol/L...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27865612/changes-in-intestinal-immunity-gut-microbiota-and-expression-of-energy-metabolism-related-genes-explain-adenoma-growth-in-bilberry-and-cloudberry-fed-apc-min-mice
#8
Essi Päivärinta, Mikael Niku, Johanna Maukonen, Markus Storvik, Anu Heiman-Lindh, Maria Saarela, Anne-Maria Pajari, Marja Mutanen
We showed previously that ellagitannin-rich cloudberries and anthocyanin-rich bilberries reduce the number of intestinal adenomas in multiple intestinal neoplasia/+ (Apc(Min)) mice. We also found that cloudberries decreased the size of adenomas, whereas bilberries increased it. Here we hypothesized that the difference in adenoma growth could be explained by dissimilar effects of the berries on intestinal immune responses and gut microbiota, potentially driven by the distinct polyphenol compositions of the 2 berries...
October 15, 2016: Nutrition Research
https://www.readbyqxmd.com/read/27865350/the-fruit-of-acanthopanax-senticosus-rupr-et-maxim-harms-improves-insulin-resistance-and-hepatic-lipid-accumulation-by-modulation-of-liver-adenosine-monophosphate-activated-protein-kinase-activity-and-lipogenic-gene-expression-in-high-fat-diet-fed-obese-mice
#9
Tetsuo Saito, Miyako Nishida, Masafumi Saito, Akari Tanabe, Takahiro Eitsuka, Shi-Hua Yuan, Nobuo Ikekawa, Hiroshi Nishida
Obesity-associated insulin resistance is a major risk factor for most metabolic diseases, including dyslipidemia and type 2 diabetes. Acanthopanax senticosus (Rupr. et Maxim.) Harms (Goka) root has been used in traditional Chinese medicine for treatment of diabetes and other conditions; however, little is known about the effects of Goka fruit (GF). Goka fruit is rich in anthocyanin, which has beneficial effects on obesity and insulin resistance via activation of adenosine monophosphate-activated protein kinase (AMPK)...
October 2016: Nutrition Research
https://www.readbyqxmd.com/read/27858514/involvement-of-sth7-in-light-adapted-development-in-arabidopsis-thaliana-promoted-by-both-strigolactone-and-karrikin
#10
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
https://www.readbyqxmd.com/read/27847126/effects-of-blueberry-anthocyanins-on-retinal-oxidative-stress-and-inflammation-in-diabetes-through-nrf2-ho-1-signaling
#11
Yu Song, Lili Huang, Jianfeng Yu
Anthocyanins, which are abundant in blueberries, provide significant protection against many chronic diseases. We investigated the effects of blueberry anthocyanins (BA) on diabetes-induced oxidative stress and inflammation in rat retinas. Male rats were divided randomly into five groups. Intraperitoneal injection of streptozotocin (STZ, 60mg/kg) was used to induce a rat diabetes model. BA at 20, 40, and 80mg/kg were given orally for about 12weeks. The results showed that BA could prevent diabetes-induced weight loss and increased blood glucose...
December 15, 2016: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/27829354/transcriptome-sequencing-and-metabolite-analysis-for-revealing-the-blue-flower-formation-in-waterlily
#12
Qian Wu, Jie Wu, Shan-Shan Li, Hui-Jin Zhang, Cheng-Yong Feng, Dan-Dan Yin, Ru-Yan Wu, Liang-Sheng Wang
BACKGROUND: Waterlily (Nymphaea spp.), a perennial herbaceous aquatic plant, is divided into two ecological groups: hardy waterlily and tropical waterlily. Although the hardy waterlily has no attractive blue flower cultivar, its adaptability is stronger than tropical waterlily because it can survive a cold winter. Thus, breeding hardy waterlily with real blue flowers has become an important target for breeders. Molecular breeding may be a useful way. However, molecular studies on waterlily are limited due to the lack of sequence data...
November 9, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27818667/multiple-r2r3-myb-transcription-factors-involved-in-the-regulation-of-anthocyanin-accumulation-in-peach-flower
#13
Hui Zhou, Qian Peng, Jianbo Zhao, Albert Owiti, Fei Ren, Liao Liao, Lu Wang, Xianbao Deng, Quan Jiang, Yuepeng Han
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...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27817120/identification-of-anthocyanin-biosynthesis-related-micrornas-in-a-distinctive-chinese-radish-raphanus-sativus-l-by-high-throughput-sequencing
#14
Yuyan Sun, Yang Qiu, Mengmeng Duan, Jinglei Wang, Xiaohui Zhang, Haiping Wang, Jiangping Song, Xixiang Li
Anthocyanins are widely distributed water-soluble phytochemical pigments belonging to the flavonoid group. To date, limited knowledge is available about the regulatory roles of miRNAs in anthocyanin biosynthesis in plants. To identify the miRNAs associated with anthocyanin biosynthesis in radish, five small RNA (sRNA) libraries constructed from 'Xinlimei' radish roots at 11, 21, 44, 56 and 73 days (d) were examined using high-throughput sequencing technology. A total of 102.02 million (M) clean reads were generated, from which 483 known and 1415 novel miRNAs were identified...
November 5, 2016: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/27813555/cloning-and-bioinformatic-analysis-of-transcription-factor-myb10-from-the-red-leaf-peach
#15
X Q Wang, J Han, Y Wen, W B Jiang, J G Fang, B B Zhang, R J Ma
In higher plants, the transcription factor MYB10 is an important regulator of anthocyanin biosynthesis. In order to study its role in the development of red coloration in peach leaves, the full-length MYB10 complementary DNA sequence of the red-leaf peach cultivar 'Tsukuba No. 5' (Prunus persica f. atropurpurea) was successfully cloned using reverse transcription-polymerase chain reaction. The sequence was assigned the GenBank accession No. KP315904. Bioinformatic analysis identified the complete MYB10 open reading frame, consisting of 678 bp encoding 225 amino acids...
October 24, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27811015/myb75-phosphorylation-by-mpk4-is-required-for-light-induced-anthocyanin-accumulation-in-arabidopsis
#16
Shengnan Li, Wenyi Wang, Jinlan Gao, Kangquan Yin, Rui Wang, ChengCheng Wang, Morten Petersen, John Mundy, Jin-Long Qiu
Light is a major environmental cue affecting various physiological and metabolic processes in plants. Although plant photoreceptors are well characterized, the mechanisms by which light regulates downstream responses are less clear. In Arabidopsis thaliana, the accumulation of photo-protective anthocyanin pigments is light dependent and the R2R3 MYB transcription factor MYB75/PAP1 regulates anthocyanin accumulation. Here we report that MYB75 interacts with and is phosphorylated by MAP KINASE 4 (MPK4). Their interaction is dependent on MPK4 kinase activity and is required for full function of MYB75...
November 3, 2016: Plant Cell
https://www.readbyqxmd.com/read/27810677/effects-of-ambient-solar-uv-radiation-on-grapevine-leaf-physiology-and-berry-phenolic-composition-along-one-entire-season-under-mediterranean-field-conditions
#17
María-Ángeles Del-Castillo-Alonso, María P Diago, Rafael Tomás-Las-Heras, Laura Monforte, Gonzalo Soriano, Javier Martínez-Abaigar, Encarnación Núñez-Olivera
In the present study we assessed the effects of ambient solar UV exclusion on leaf physiology, and leaf and berry skin phenolic composition, of a major grapevine cultivar (Tempranillo) grown under typically Mediterranean field conditions over an entire season. In general, the effects of time were stronger than those of UV radiation. Ambient UV caused a little stressing effect (eustress) on leaf physiology, with decreasing net photosynthesis rates and stomatal conductances. However, it was not accompanied by alterations in Fv/Fm or photosynthetic pigments, and was partially counterbalanced by the UV-induced accumulation of protective flavonols...
October 22, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27794275/excess-boron-responsive-regulations-of-antioxidative-mechanism-at-physio-biochemical-and-molecular-levels-in-arabidopsis-thaliana
#18
Doğa Selin Kayıhan, Ceyhun Kayıhan, Yelda Özden Çiftçi
This work was aimed to evaluate the effect of boron (B) toxicity on oxidative damage level, non-enzymatic antioxidant accumulation such as anthocyanin, flavonoid and proline and expression levels of antioxidant enzymes including superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and glutathione reductase (GR) and their respective activities as well as expression levels of miR398 and miR408 in Arabidopsis thaliana. Plants were germinated and grown on MS medium containing 1 mM B (1B) and 3 mM B (3B) for 14 d...
October 18, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27790239/the-arabidopsis-transcription-factor-anac032-represses-anthocyanin-biosynthesis-in-response-to-high-sucrose-and-oxidative-and-abiotic-stresses
#19
Kashif Mahmood, Zhenhua Xu, Ashraf El-Kereamy, José A Casaretto, Steven J Rothstein
Production of anthocyanins is one of the adaptive responses employed by plants during stress conditions. During stress, anthocyanin biosynthesis is mainly regulated at the transcriptional level via a complex interplay between activators and repressors of anthocyanin biosynthesis genes. In this study, we investigated the role of a NAC transcription factor, ANAC032, in the regulation of anthocyanin biosynthesis during stress conditions. ANAC032 expression was found to be induced by exogenous sucrose as well as high light (HL) stress...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27788164/effect-of-debagging-time-on-pigment-patterns-in-the-peel-and-sugar-and-organic-acid-contents-in-the-pulp-of-golden-delicious-and-qinguan-apple-fruit-at-mid-and-late-stages-of-development
#20
Chenjuan Jing, Changqing Ma, Juan Zhang, Shujuan Jing, Xiaobing Jiang, Yazhou Yang, Zhengyang Zhao
This study examined the effect of debagging time on color and flavor / taste compounds in the non-red apple cultivar 'Golden Delicious' and red cultivar 'Qinguan' at mid and late stages of fruit development. Debagging briefly improved the red color in both cultivars, the peel of 'Golden Delicious' presenting pale-pink hue. However, rapid anthocyanin accumulation occurred in apple peel at a specific time (after 179 days after flowering (DAF) in 'Qinguan') and was unaltered by debagging time in the red cultivar 'Qinguan'...
2016: PloS One
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