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https://www.readbyqxmd.com/read/28189049/characterization-of-metabolites-in-different-kiwifruit-varieties-by-nmr-and-fluorescence-spectroscopy
#1
Nur Ashikin Abdul Hamid, Ahmed Mediani, M Maulidiani, Faridah Abas, Yong Seo Park, Hanna Leontowicz, Maria Leontowicz, Jacek Namiesnik, S Gorinstein
It is known from our previous studies that kiwifruits, which are used in common human diet, have preventive properties of coronary artery disease. This study describes a combination of (1)H NMR spectroscopy, multivariate data analyses and fluorescence measurements in differentiating of some kiwifruit varieties, their quenching and antioxidant properties. A total of 41 metabolites were identified by comparing with literature data Chenomx database and 2D NMR. The binding properties of the extracted polyphenols against HSA showed higher reactivity of studied two cultivars in comparison with the common Hayward...
January 25, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28159291/corrigendum-to-nutrient-compositions-and-antioxidant-capacity-of-kiwifruit-actinidia-and-their-relationship-with-flesh-color-and-commercial-value-food-chem-218-2017-294-304
#2
Tingting Ma, Xiangyu Sun, Jinmei Zhao, Yilin You, Yushan Lei, Guitian Gao, Jicheng Zhan
No abstract text is available yet for this article.
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28159273/synthesis-and-characterization-of-hollow-porous-molecular-imprinted-polymers-for-the-selective-extraction-and-determination-of-caffeic-acid-in-fruit-samples
#3
Dengxin Fan, Ling Jia, Haiyan Xiang, Mijun Peng, Hui Li, Shuyun Shi
Hollow porous molecular imprinted polymers (HPMIPs) were prepared using caffeic acid (CA) as template, 4-vinylpyridine (4-VP) as functional monomer, and MCM-48 as sacrificial support. Large surface area (562.7m(2)/g) of HPMIPs resulted in high binding capacity (27.26mg/g) and fast kinetic binding (40min) in comparison with solid MIPs. Equilibrium data fitted well to Freundlich equation, and adsorption process with multi-diffusion mechanisms could be described by pseudo-second order model. Selectivity of HPMIPs was favorable...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28158721/kiwifruit-svp2-gene-prevents-premature-budbreak-during-dormancy
#4
Rongmei Wu, Tianchi Wang, Ben A W Warren, Andrew C Allan, Richard C Macknight, Erika Varkonyi-Gasic
No abstract text is available yet for this article.
February 3, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28131340/sucrose-phloem-unloading-follows-an-apoplastic-pathway-with-high-sucrose-synthase-in-actinidia-fruit
#5
Cheng Chen, Yulin Yuan, Chen Zhang, Huixia Li, Fengwang Ma, Mingjun Li
Phloem unloading plays a pivotal role in photoassimilate partitioning and the accumulation of sugars in sink organs, e.g. fruit. Here, we investigated the pathway of sucrose unloading in kiwifruit (Actinidia deliciasa cv. Qinmei) using a combination of electron microscopy, transport of the phloem-mobile symplastic tracer carboxyfluorescein and enzyme activity and gene expression assays. Our structural investigation revealed that the sieve element-companion cell complex of bundles feeding the fruit flesh was symplastically isolated from its surrounding parenchyma cells throughout fruit development, whereas numerous plasmodesmata were present between the phloem parenchyma cells...
February 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28125645/gbs-based-deconvolution-of-the-surviving-north-american-collection-of-cold-hardy-kiwifruit-actinidia-spp-germplasm
#6
Arthur T O Melo, Robert S Guthrie, Iago Hale
Plant germplasm collections can be invaluable resources to plant breeders, provided they are well-characterized. After 140 years of acquisition and curation efforts by a wide and largely non-coordinated array of private and institutional actors, the current US collection of cold-hardy kiwifruit (Actinidia spp.) is rife with misclassifications, misnomers, and mix-ups. To facilitate the systematic improvement and resource-efficient curation of these species of long-recognized horticultural potential, we used genotyping-by-sequencing (GBS) data to deconvolute this historic collection...
2017: PloS One
https://www.readbyqxmd.com/read/28112597/identification-of-loci-of-pseudomonas-syringae-pv-actinidiae-involved-in-lipolytic-activity-and-their-role-in-colonization-of-kiwifruit-leaves
#7
Hitendra Kumar Patel, Patrizia Ferrante, Meng Xianfa, Sree Gowrinadh Javvadi, Sujatha Subramoni, Marco Scortichini, Vittorio Venturi
Bacterial canker disease caused by Pseudomonas syringae pv. actinidiae (Psa), an emerging pathogen of kiwifruit plants, has recently brought about major economic losses worldwide. Genetic studies on virulence functions of Psa have not yet been reported and there is little experimental data regarding bacterial genes involved in pathogenesis. In this study, we performed a genetic screen in order to identify transposon mutants altered in the lipolytic activity as it is known that mechanisms of regulation, production and secretion of enzymes often play crucial roles in virulence of plant pathogens...
January 23, 2017: Phytopathology
https://www.readbyqxmd.com/read/28063194/evolution-of-copper-resistance-in-the-kiwifruit-pathogen-pseudomonas-syringae-pv-actinidiae-through-acquisition-of-integrative-conjugative-elements-and-plasmids
#8
Elena Colombi, Christina Straub, Sven Künzel, Matthew D Templeton, Honour C McCann, Paul B Rainey
Horizontal gene transfer can precipitate rapid evolutionary change. In 2010 the global pandemic of kiwifruit canker disease caused by Pseudomonas syringae pv. actinidiae (Psa) reached New Zealand. At the time of introduction, the single clone responsible for the outbreak was sensitive to copper, however, analysis of a sample of isolates taken in 2015 and 2016 showed that a quarter were copper resistant. Genome sequences of seven strains showed that copper resistance - comprising czc/cusABC and copABCD systems - along with resistance to arsenic and cadmium, was acquired via uptake of integrative conjugative elements (ICEs), but also plasmids...
January 7, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28003537/ileal-digesta-nondietary-substrates-from-cannulated-pigs-are-major-contributors-to-in-vitro-human-hindgut-short-chain-fatty-acid-production
#9
Carlos A Montoya, Shane M Rutherfurd, Paul J Moughan
BACKGROUND: It has been assumed that short-chain fatty acids (SCFAs) in the colon originate mainly from dietary fiber fermentation. However, SCFAs in the colon are also produced from the fermentation of nondietary material. OBJECTIVES: We aimed to predict the relative contributions of dietary and nondietary substrates in the production of SCFAs with the use of a human fecal inoculum for diets containing kiwifruit as a model fiber. METHODS: Terminal ileal digesta were collected from ileal-cannulated male pigs [n = 7; mean ± SD: 41...
December 21, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27992562/two-subclasses-of-differentially-expressed-tps1-genes-and-biochemically-active-tps1-proteins-may-contribute-to-sugar-signalling-in-kiwifruit-actinidia-chinensis
#10
Charlotte Voogd, Lara A Brian, Erika Varkonyi-Gasic
Trehalose metabolism and its intermediate trehalose-6-phosphate (T6P) are implicated in sensing and signalling sucrose availability. Four class I TREHALOSE-6-PHOSPHATE SYNTHASE (TPS1) genes were identified in kiwifruit, three of which have both the TPS and trehalose-6-phosphate phosphatase (TPP) domain, while the fourth gene gives rise to a truncated transcript. The transcript with highest sequence homology to Arabidopsis TPS1, designated TPS1.1a was the most highly abundant TPS1 transcript in all examined kiwifruit tissues...
2016: PloS One
https://www.readbyqxmd.com/read/27983700/characterization-of-starch-degradation-related-genes-in-postharvest-kiwifruit
#11
Xiong Hu, Sheng Kuang, Ai-Di Zhang, Wang-Shu Zhang, Miao-Jin Chen, Xue-Ren Yin, Kun-Song Chen
Starch is one of the most important storage carbohydrates in plants. Kiwifruit typically accumulate large amounts of starch during development. The fruit retain starch until commercial maturity, and its postharvest degradation is essential for consumer acceptance. The activity of genes related to starch degradation has, however, rarely been investigated. Based on the kiwifruit genome sequence and previously reported starch degradation-related genes, 17 novel genes were isolated and the relationship between their expression and starch degradation was examined using two sets of materials: ethylene-treated (100 µL/L, 20 °C; ETH) vs...
December 15, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27933987/influence-of-geographical-location-of-orchards-on-green-kiwifruit-bioactive-components
#12
Ivana Giangrieco, Simona Proietti, Stefano Moscatello, Lisa Tuppo, Alberto Battistelli, Francesco La Cara, Maurizio Tamburrini, Franco Famiani, Maria Antonietta Ciardiello
Italy is one of the world's major kiwifruit producers and exporters with orchards located in different areas from the north to the south of the peninsula. This study sought to investigate for the first time the possible influence of the geographical location of kiwifruit orchards on some fruit components, selected because of their involvement in beneficial or negative effects on human health. The fruits harvested in 16 Italian areas were analyzed, and the results obtained show that the observed variations of the relative amounts of total proteins, kiwellin, the major allergen actinidin, ascorbate, polyphenols, and superoxide dismutase (SOD)-like activity seem not to be related to the geographical location of the orchards...
December 7, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27904461/outbreak-and-spread-of-bacterial-canker-of-kiwifruit-caused-by-pseudomonas-syringae-pv-actinidiae-biovar-3-in-korea
#13
Gyoung Hee Kim, Kwang-Hyung Kim, Kyeong In Son, Eu Ddeum Choi, Young Sun Lee, Jae Sung Jung, Young Jin Koh
A bacterial pathogen, Pseudomonas syringae pv. actinidiae (Psa), is a causal agent of kiwifruit bacterial canker worldwide. Psa biovar 3 (Psa3) was first detected in 2011 at an orchard in Dodeok-myeon, Goheunggun, Jeonnam Province in Korea. In this study, we present the results of an epidemiological study regarding Psa3 occurrence on kiwifruit orchards in Korea for the period of 2013 to 2015. Since the first detection of Psa3 in 2011, there was no further case reported by 2013. However, Psa3 was rapidly spreading to 33 orchards in 2014; except for three orchards in Sacheonsi, Gyeongnam Province, most cases were reported in Jeju Island...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27904460/d-psa-k-a-model-for-estimating-the-accumulated-potential-damage-on-kiwifruit-canes-caused-by-bacterial-canker-during-the-growing-and-overwintering-seasons
#14
Ki Seok Do, Bong Nam Chung, Jae Ho Joa
We developed a model, termed D-PSA-K, to estimate the accumulated potential damage on kiwifruit canes caused by bacterial canker during the growing and overwintering seasons. The model consisted of three parts including estimation of the amount of necrotic lesion in a non-frozen environment, the rate of necrosis increase in a freezing environment during the overwintering season, and the amount of necrotic lesion on kiwifruit canes caused by bacterial canker during the overwintering and growing seasons. We evaluated the model's accuracy by comparing the observed maximum disease incidence on kiwifruit canes against the damage estimated using weather and disease data collected at Wando during 1994-1997 and at Seogwipo during 2014-2015...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27865618/actinidia-arguta-supplementation-protects-aorta-and-liver-in-rats-with-induced-hypercholesterolemia
#15
Maria Leontowicz, Hanna Leontowicz, Iwona Jesion, Wojciech Bielecki, Katarzyna Najman, Piotr Latocha, Yong-Seo Park, Shela Gorinstein
There are no published results focusing on the study of hardy kiwifruit as a supplementation to the atherogenic diet. We hypothesized that hardy kiwifruit (Actinidia arguta (A. arguta)) from Poland possess better pro-healthy action than two Asian varieties (Hayward and Bidan). We tested this hypothesis by measuring the metabolic reactions of rats loaded with 1% cholesterol and supplemented with 5% of hardy kiwifruit (A. arguta), Hayward, or Bidan in their diets. The experiment was performed on 71 male Wistar rats...
November 2016: Nutrition Research
https://www.readbyqxmd.com/read/27855880/physicochemical-properties-of-kiwifruit-starch
#16
COMPARATIVE STUDY
Dongxing Li, Fan Zhu
Three varieties of golden kiwifruit (Actinidia chinensis) (Gold3, Gold9 and Hort16A) were collected at the commercial harvesting time, and physicochemical properties of starches from core and outer pericarp were studied. Starch contents (dry weight basis) in outer pericarp and core tissues ranged from 38.6 to 51.8% and 34.6 to 40.7%, respectively. All the kiwifruit starches showed B-type polymorph. Compared to the outer pericarp starches, amylose content and enzyme susceptibility of core starches were higher, and the degree of crystallinity, granule size and gelatinization parameters of core starches were somewhat lower...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27802570/overall-quality-properties-of-kiwifruit-treated-by-cinnamaldehyde-and-citral-microbial-antioxidant-capacity-during-cold-storage
#17
Yuan Wang, Tingting Shan, Yahong Yuan, Tianli Yue
This work was undertaken to evaluate the microbiological characteristics and antioxidant and physiological activities in kiwifruits (Actinida deliciosa var. Qinmei) with/without cinnamaldehyde (C1) and citral (C2) fumigation treatments (5 μL/L) during 0, 3, 6, 9, and 12 d of storage at 4 °C. Essential oils (EOs) treatment lowered the total viable counts, yeast, and mold to 1.54, 2.36, and 2.05 log CFU/g, respectively. Moreover, EOs improved the antioxidant activities of kiwifruit. They enhanced phenolics and flavonoids content in fruit tissue by 49...
December 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27752304/equicarbohydrate-partial-exchange-of-kiwifruit-for-wheaten-cereal-reduces-postprandial-glycaemia-without-decreasing-satiety
#18
Suman Mishra, Jinny Willis, Juliet Ansell, John Alexander Monro
Kiwifruit is a carbohydrate food of low glycaemic potency which could potentially be exchanged for starch-based foods in management of postprandial glycaemia. The effect of equicarbohydrate partial exchange of kiwifruit varieties 'Hayward' green (GR) and 'Zesy002' (SunGold; SG) for a starchy wheat-based breakfast cereal (WB) on the characteristics of the postprandial glycaemic response and satiety was therefore determined. A total of twenty non-diabetic subjects (mean age 36 years; mean BMI 24·5 kg/m(2)) consumed four meals, each containing 40 g available carbohydrate, in random order, after an overnight fast...
2016: Journal of Nutritional Science
https://www.readbyqxmd.com/read/27749150/development-and-validation-of-an-infection-risk-model-for-bacterial-canker-of-kiwifruit-using-a-multiplication-and-dispersal-concept-for-forecasting-bacterial-diseases
#19
R M Beresford, J L Tyson, W R Henshall
A weather-based disease prediction model for bacterial canker of kiwifruit (known worldwide as Psa; Pseudomonas syringae pv. actinidiae biovar 3) was developed using a new mechanistic scheme for bacterial disease forecasters, the multiplication and dispersal concept. Bacterial multiplication is estimated from a temperature function, the M index, accumulated from hourly air temperature over 3 days for hours when the leaf canopy is wet. Rainfall provides free water to move inoculum to infection sites, and the daily risk indicator, the R index, is the 3-day accumulation of the M index output on days with total rainfall >1 mm; otherwise, R is zero...
February 2017: Phytopathology
https://www.readbyqxmd.com/read/27732749/is-kiwifruit-allergy-a-matter-in-kiwifruit-cultivating-regions-a-population-based-study
#20
Mehtap Haktanir Abul, Selim Dereci, Sadan Hacisalihoglu, Fazil Orhan
BACKGROUND: Although kiwifruit is known as a common cause of food allergy, population-based studies concerning the prevalence of kiwifruit allergy do not exist. We aimed to determine the prevalence and clinical characteristics of IgE-mediated kiwifruit allergy in 6-18-year-old urban schoolchildren in a region where kiwifruit is widely cultivated. METHODS: This cross-sectional study recruited 20,800 of the randomly selected 6-18-year-old urban schoolchildren from the Rize city in the eastern Black Sea region of Turkey during 2013...
February 2017: Pediatric Allergy and Immunology
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