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https://www.readbyqxmd.com/read/28327625/early-metabolic-and-transcriptional-variations-in-fruit-of-natural-white-fruited-fragaria-vesca-genotypes
#1
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
https://www.readbyqxmd.com/read/28326087/arabidopsis-nac-transcription-factor-jungbrunnen1-exerts-conserved-control-over-gibberellin-and-brassinosteroid-metabolism-and-signaling-genes-in-tomato
#2
Sara Shahnejat-Bushehri, Annapurna D Allu, Nikolay Mehterov, Venkatesh P Thirumalaikumar, Saleh Alseekh, Alisdair R Fernie, Bernd Mueller-Roeber, Salma Balazadeh
The Arabidopsis thaliana NAC transcription factor JUNGBRUNNEN1 (AtJUB1) regulates growth by directly repressing GA3ox1 and DWF4, two key genes involved in gibberellin (GA) and brassinosteroid (BR) biosynthesis, respectively, leading to GA and BR deficiency phenotypes. AtJUB1 also reduces the expression of PIF4, a bHLH transcription factor that positively controls cell elongation, while it stimulates the expression of DELLA genes, which are important repressors of growth. Here, we extend our previous findings by demonstrating that AtJUB1 induces similar GA and BR deficiency phenotypes and changes in gene expression when overexpressed in tomato (Solanum lycopersicum)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28317748/bioaccessibility-of-bioactive-compounds-and-antioxidant-potential-of-ju%C3%A3-ara-fruits-euterpe-edulis-martius-subjected-to-in-vitro-gastrointestinal-digestion
#3
Mayara Schulz, Fabíola Carina Biluca, Luciano Valdemiro Gonzaga, Graciele da Silva Campelo Borges, Luciano Vitali, Gustavo Amadeu Micke, Jefferson Santos de Gois, Tarcisio Silva de Almeida, Daniel Lazaro Gallindo Borges, Paul Richard Momsen Miller, Ana Carolina Oliveira Costa, Roseane Fett
An in vitro method involving simulated gastrointestinal digestion was used to assess the bioaccessibility of fifteen minerals, twenty-two phenolic compounds and the antioxidant capacity in juçara fruit during seven ripening stages. For minerals and phenolics, respectively, initial contents were up to 1325.9 and 22.9mg100g(-1), whereas after in vitro digestion, the maximum values were 556.7 and 14.43mg100g(-1) (dry matter). Antioxidant capacity, determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (DPPH) and ferric reducing antioxidant power (FRAP), after in vitro digestion decreased 51-78% when compared to the crude extract...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28315000/polyphenol-metabolism-in-differently-colored-cultivars-of-red-currant-ribes-rubrum-l-through-fruit-ripening
#4
Zala Zorenc, Robert Veberic, Darinka Koron, Silvija Miosic, Olly Sanny Hutabarat, Heidi Halbwirth, Maja Mikulic-Petkovsek
Rare red currants colors caused by low anthocyanin content in the pink and a lack of anthocyanins in the white cultivar correlated with low ANS gene expression, enzyme activity, and increased sugar/acid ratios. Changes in the contents of polyphenols, sugars, and organic acids in berries of the three differently colored Ribes rubrum L. cultivars ('Jonkheer van Tets', 'Pink Champagne', and 'Zitavia') were determined by LC-MS and HPLC at 4 sampling times during the last month of fruit ripening. The activities of the main flavonoid enzymes, chalcone synthase/chalcone isomerase (CHS/CHI), flavanone 3-hydroxylase (FHT), and dihydroflavonol 4-reductase (DFR), and the expression of anthocyanidin synthase (ANS) were additionally measured...
March 17, 2017: Planta
https://www.readbyqxmd.com/read/28304376/an-integrated-analysis-based-on-transcriptome-and-proteome-reveals-deastringency-related-genes-in-cpcna-persimmon
#5
Wenxing Chen, Yalou Xiong, Liqing Xu, Qinglin Zhang, Zhengrong Luo
Persimmon fruits accumulate a large amount of proanthocyanidins (PAs) during development. PAs cause a dry or puckering sensation due to its astringency. Pollination constant and non-astringent (PCNA) persimmon fruits can lose astringency during fruit ripening. However, little is known about the mechanism of natural de-astringency of Chinese PCNA (CPCNA). To gain insight into the molecular events of CPCNA natural de-astringency, we used mRNA-seq and iTRAQ-based quantitative proteomic analysis to measure changes in genes and proteins expression at two key stages of natural astringency removal (i...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28301727/carotenoid-profile-antioxidant-capacity-and-chromoplasts-of-pink-guava-psidium-guajava-l-cv-%C3%A2-criolla%C3%A2-during-fruit-ripening
#6
Carolina Rojas-Garbanzo, Maike Gleichenhagen, Annerose Heller, Patricia Esquivel, Nadine Schulze-Kaysers, Andreas Schieber
Pigments of pericarp and pulp of pink guava (Psidium guajava L. cv. ´Criolla´) were investigated to elucidate the profile and the accumulation of main carotenoids during four stages of fruit ripening by using HPLC-DAD and APCI-MS/MS analysis. Seventeen carotenoids were identified and changes in their profile during fruit ripening were observed. The carotenoids all-trans-β-carotene, 15-cis-lycopene, and all-trans-lycopene were present in all ripening stages, but all-trans-lycopene was found to be predominant (from 63 % to 92 % of total carotenoids) and responsible for the high lipophilic antioxidant capacity determined by spectrophotometric assays...
March 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28299506/identification-of-the-ligand-of-pru-p-3-a-peach-ltp
#7
Nuria Cubells-Baeza, Cristina Gómez-Casado, Leticia Tordesillas, Carmen Ramírez-Castillejo, María Garrido-Arandia, Pablo González-Melendi, María Herrero, Luis F Pacios, Araceli Díaz-Perales
Pru p 3, a peach LTP, is located in pollinated flower styles and secreting downy hairs, transporting a derivative of camptothecin bound to phytosphingosine. Pru p 3 may inhibit a second pollination and may keep away herbivores until seed maturation. The allergen Pru p 3, a peach lipid transfer protein, has been well studied. However, its physiological function remains to be elucidated. Our results showed that Pru p 3 usually carries a lipid ligand that play an essential role in its function in plants. Using ESI-qToF, we observed that the ligand was a derivative of camptothecin binding to phytosphingosine, wich that is inserted into the hydrophobic tunnel of the protein...
March 15, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28294971/exploring-the-functions-of-9-lipoxygenase-dklox3-in-ultrastructural-changes-and-hormonal-stress-response-during-persimmon-fruit-storage
#8
Kun Meng, Yali Hou, Ye Han, Qiuyan Ban, Yiheng He, Jiangtao Suo, Jingping Rao
Lipoxygenase (LOX) initiates the hydroperoxidation of polyunsaturated fatty acids and is involved in multiple physiological processes. In this study, investigation of various microscopic techniques showed that the fruit peel cellular microstructure of the two persimmon cultivars differed after 12 days of storage, resulting in fruit weight loss and an increased number and depth of microcracks. Analysis of subcellular localization revealed that greater amounts of DkLOX3-immunolabelled gold particles accumulated in "Fupingjianshi" than in "Ganmaokui" during storage...
March 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28293851/love-me-not-meter-a-sensor-device-for-detecting-petal-detachment-forces-in-arabidopsis-thaliana
#9
Andrew Maule, Graham Henning, Sara Patterson
Abscission is the developmentally controlled loss of plant organs, providing diverse functions such as shedding senescent or diseased leaves, dispersing seeds, or dropping ripened fruit. This process is defined by the hydrolytic breakdown of the middle lamella in the abscission zone, allowing for organ detachment. While the model plant Arabidopsis thaliana does not undergo leaf abscission, it does have a predictable progression of floral organ abscission. To study abscission zone physical integrity in Arabidopsis, a breakstrength meter for Arabidopsis was developed to reliably measure the petal detachment forces...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28293849/inhibitors-of-ethylene-biosynthesis-and-signaling
#10
G Eric Schaller, Brad M Binder
Ethylene is a gas biosynthesized by plants which has many physiological and developmental effects on their growth. Ethylene affects agriculturally and horticulturally important traits such as fruit ripening, post-harvest physiology, senescence, and abscission, and so ethylene action is often inhibited to improve the shelf life of fruits, vegetables, and cut flowers. Chemical inhibitors of ethylene action are also useful for research to characterize the mechanisms of ethylene biosynthesis and signal transduction, and the role that ethylene plays in various physiological processes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28293839/escherichia-coli-based-expression-and-in-vitro-activity-assay-of-1-aminocyclopropane-1-carboxylate-acc-synthase-and-acc-oxidase
#11
Shigeru Satoh, Yusuke Kosugi
1-Aminocyclopropane-1-carboxylate (ACC) synthase and ACC oxidase are key enzymes in the ethylene biosynthetic pathway in plant tissues, and in vitro assay of their activities is indispensable for analysis, especially, for studying the action mechanism of inhibitors of ethylene biosynthesis. The enzymes can be obtained from plant tissues that are producing ethylene abundantly, such as ripening fruit- and senescing flower tissues, but it is necessary to separate the enzymes from co-extracted ACC by partial purification, making the procedure laborious and time-consuming...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28291596/isolation-and-characterization-of-9-lipoxygenase-and-epoxide-hydrolase-2-genes-insight-into-lactone-biosynthesis-in-mango-fruit-mangifera-indica-l
#12
Ashish B Deshpande, Hemangi G Chidley, Pranjali S Oak, Keshav H Pujari, Ashok P Giri, Vidya S Gupta
Uniqueness and diversity of mango flavour across various cultivars are well known. Among various flavour metabolites lactones form an important class of aroma volatiles in certain mango varieties due to their ripening specific appearance and lower odour detection threshold. In spite of their biological and biochemical importance, lactone biosynthetic pathway in plants remains elusive. Present study encompasses quantitative real-time analysis of 9-lipoxygenase (Mi9LOX), epoxide hydrolase 2 (MiEH2), peroxygenase, hydroperoxide lyase and acyl-CoA-oxidase genes during various developmental and ripening stages in fruit of Alphonso, Pairi and Kent cultivars with high, low and no lactone content and explains their variable lactone content...
March 10, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28285999/evolution-of-multiple-sensory-systems-drives-novel-egg-laying-behavior-in-the-fruit-pest-drosophila-suzukii
#13
Marianthi Karageorgi, Lasse B Bräcker, Sébastien Lebreton, Caroline Minervino, Matthieu Cavey, K P Siju, Ilona C Grunwald Kadow, Nicolas Gompel, Benjamin Prud'homme
The rise of a pest species represents a unique opportunity to address how species evolve new behaviors and adapt to novel ecological niches [1]. We address this question by studying the egg-laying behavior of Drosophila suzukii, an invasive agricultural pest species that has spread from Southeast Asia to Europe and North America in the last decade [2]. While most closely related Drosophila species lay their eggs on decaying plant substrates, D. suzukii oviposits on ripening fruit, thereby causing substantial economic losses to the fruit industry [3-8]...
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28284159/portable-raman-spectroscopy-for-an-in-situ-monitoring-the-ripening-of-tomato-solanum-lycopersicum-fruits
#14
Josu Trebolazabala, Maite Maguregui, Héctor Morillas, Alberto de Diego, Juan Manuel Madariaga
Ripening is one of the most important transformations that fruits and vegetables suffer, from an unripe to a ripe stage. In this study, it was followed up and analyzed the variations in the composition of tomato fruits at different ripening stages (green or unripe, orange or middle ripe, red or ripe and brown or overripe). The results obtained from the Raman measurements carried out showed a change in the composition of tomato fruits in the transit from green to brown. The analysis confirmed an increase of carotenoids from an unripe to a ripe stage of these fruits, being lycopene the characteristic carotenoid of the optimum ripe stage...
March 7, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28283921/new-insights-into-the-operative-network-of-faeo-an-enone-oxidoreductase-from-fragaria-x-ananassa-duch
#15
Gabriella Collu, Domenica Farci, Francesca Esposito, Francesca Pintus, Joanna Kirkpatrick, Dario Piano
The 2-methylene-furan-3-one reductase or Fragaria x ananassa Enone Oxidoreductase (FaEO) catalyses the last reductive step in the biosynthesis of 4-hydroxy-2,5-dimethyl-3(2H)-furanone, a major component in the characteristic flavour of strawberries. In the present work, we describe the association between FaEO and the vacuolar membrane of strawberry fruits. Even if FaEO lacks epitopes for stable or transient membrane-interactions, it contains a calmodulin-binding region, suggesting that in vivo FaEO may be associated with the membrane via a peripheral protein complex with calmodulin...
March 11, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28282293/preliminary-phytochemical-analysis-and-evaluation-of-antioxidant-cytotoxic-and-inhibition-of-lipopolysaccaride-induced-nos-inos-expression-in-balb-c-mice-liver-by-ziziphus-oenoplia-mill-fruit
#16
Ramaraj Thirugnanasampandan, Gunasekar Ramya, Gunasekaran Bhuvaneswari, Srinivasan Aravindh, Suresh Vaishnavi, Madhusudhanan Gogulramnath
BACKGROUND: Ziziphus oenoplia Mill. is an ethnomedicinal plant and its fruit has been traditionally used by Puliar tribes of Anamalai Hills, Tamil Nadu, India to treat various ailments. Phytochemical analysis, antioxidant, cytotoxic and inducible nitric oxide synthase (iNOS) gene downregulation activities of Z. oenoplia fruit (ZOF) were studied. METHODS: To explore bioactive compounds present in the ripened fruits, high-performance thin-layer chromatography (HPTLC) and gas chromatography/mass spectrometry (GC-MS) analysis were done...
March 10, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28270225/post-transcriptional-regulation-of-fruit-ripening-and-disease-resistance-in-tomato-by-the-vacuolar-protease-slvpe3
#17
Weihao Wang, Jianghua Cai, Peiwen Wang, Shiping Tian, Guozheng Qin
BACKGROUND: Proteases represent one of the most abundant classes of enzymes in eukaryotes and are known to play key roles in many biological processes in plants. However, little is known about their functions in fruit ripening and disease resistance, which are unique to flowering plants and required for seed maturation and dispersal. Elucidating the genetic mechanisms of fruit ripening and disease resistance is an important goal given the biological and dietary significance of fruit. RESULTS: Through expression profile analyses of genes encoding tomato (Solanum lycopersicum) cysteine proteases, we identify a number of genes whose expression increases during fruit ripening...
March 7, 2017: Genome Biology
https://www.readbyqxmd.com/read/28261242/identification-and-functional-characterization-of-a-tonoplast-dicarboxylate-transporter-in-tomato-solanum-lycopersicum
#18
Ruiling Liu, Boqiang Li, Guozheng Qin, Zhanquan Zhang, Shiping Tian
Acidity plays an important role in flavor and overall organoleptic quality of fruit and is mainly due to the presence of organic acids. Understanding the molecular basis of organic acid metabolism is thus of primary importance for fruit quality improvement. Here, we cloned a putative tonoplast dicarboxylate transporter gene (SlTDT) from tomato, and submitted it to the NCBI database (GenBank accession number: KC733165). SlTDT protein contained 13 putative transmembrane domains in silico analysis. Confocal microscopic study using green fluorescent fusion proteins revealed that SlTDT was localized on tonoplast...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28261096/antioxidant-activities-metabolic-profiling-proximate-analysis-mineral-nutrient-composition-of-salvadora-persica-fruit-unravel-a-potential-functional-food-and-a-natural-source-of-pharmaceuticals
#19
Asha Kumari, Asish K Parida, Jaykumar Rangani, Ashok Panda
Salvadora persica is a medicinally important plant mainly used in oral hygiene. However, little attention has been given towards the nutritional prominence of this plant. This study encloses the proximate and mineral nutrient contents, amino acid composition, metabolite profiling and antioxidant potential of S. persica fruit. The ripen fruit contained substantial amount of sugars, mineral nutrients, carotenoids, polyphenols and flavonoids. The metabolic profiling of the fruit extract by GC-MS revealed a total of 22 metabolites comprising of sugars, sugar alcohols, organic acids, organic base, and aromatic silica compound...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28248258/effects-of-al-3-and-la-3-trivalent-metal-ions-on-tomato-fruit-proteomes
#20
Sasikiran Sangireddy, Ikenna Okekeogbu, Zhujia Ye, Suping Zhou, Kevin J Howe, Tara Fish, Theodore W Thannhauser
The tomato (Solanum lycopersicum) ripening process from mature green (MG) to turning and then to red stages is accompanied by the occurrences of physiological and biochemical reactions, which ultimately result in the formation of the flavor, color and texture of ripe fruits. The two trivalent metal ions Al(3+) and La(3+) are known to induce different levels of phytotoxicity in suppressing root growth. This paper aims to understand the impacts of these two metal ions on tomato fruit proteomes. Tomato 'Micro-Tom' plants were grown in a hydroponic culture system supplemented with 50 μM aluminum sulfate (Al₂ (SO4)₃...
February 11, 2017: Proteomes
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