| leaf phenology and seasonal variation of photosynthesis of invasive berberis thunbergii (japanese barberry) and two co-occurring native understory shrubs in a northeastern united states deciduous forest. | early leafing and extended leaf longevity can be important mechanisms for the invasion of the forest understory. we compared the leaf phenology and photosynthetic characteristics of berberis thunbergii, an early leafing invasive shrub, and two co-occurring native species, evergreen kalmia latifolia and late leafing vaccinium corymbosum, throughout the 2004 growing season. berberis thunbergii leafed out 1 month earlier than v. corymbosum and approximately 2 weeks prior to the overstory trees. the ... | 2007 | 17647021 |
| cooked blueberries: anthocyanin and anthocyanidin degradation and their radical-scavenging activity. | this study examined anthocyanin and anthocyanidin composition and radical-scavenging activity of three cultivars of blueberries (vaccinium corymbosum l., cv. bluecrop, bluetravel, and ozarkblue) before and after cooking. a total of 13 anthocyanins were separated and monitored in methanolic extracts of raw fruits by high-performance liquid chromatography/diode array detector (hplc/dad). principal component analysis using the anthocyanin profile as variables revealed differences according to culti ... | 2010 | 20662539 |
| bog bilberry (vaccinium uliginosum l.) extract reduces cultured hep-g2, caco-2, and 3t3-l1 cell viability, affects cell cycle progression, and has variable effects on membrane permeability. | bog bilberry (vaccinium uliginosum l.) is a blue-pigmented edible berry related to bilberry (vaccinium myrtillus l.) and the common blueberry (vaccinium corymbosum). the objective of this study was to investigate the effect of a bog bilberry anthocyanin extract (bbae) on cell growth, membrane permeability, and cell cycle of 2 malignant cancer cell lines, caco-2 and hep-g2, and a nonmalignant murine 3t3-l1 cell line. bbae contained 3 identified anthocyanins. the most abundant anthocyanin was cyan ... | 2010 | 20492295 |
| preparative separation of chlorogenic acid by centrifugal partition chromatography from highbush blueberry leaves (vaccinium corymbosum l.). | blueberries (genus vaccinium) have gained worldwide focus because of the high anthocyanin content of their fruits. in contrast, the leaves of blueberry have not attracted any attention, even though they contain large quantities of chlorogenic acid, a strong antioxidant compound. | 2013 | 20310076 |
| degradation of anthocyanins and anthocyanidins in blueberry jams/stuffed fish. | this study examined the effects of cooking on the degradation of anthocyanins and anthocyanidins of blueberries (vaccinium corymbosum l.) from cultivar bluecrop. fruits were used to prepare jams with different degrees brix and stuffed fish. a systematic evaluation of the degradation of anthocyanins and anthocyanidins of blueberries was performed; for that purpose an hplc/dad method was used to determine anthocyanin profile and anthocyanidin contents in fresh and cooked blueberries and in jams. t ... | 2009 | 19845348 |
| isoprene derivatives from the leaves and callus cultures of vaccinium corymbosum var. bluecrop. | the phytochemical analysis of vaccinium corymbosum var bluecrop leaves and callus biomass revealed ursolic acid, oleanolic acid, alpha-amyrin and beta-amyrin in both plant materials. beta-sitosterol was determined only in callus biomass. the structure of isolated compounds was elucidated by tlc co-chromatography with standards and with spectroscopic methods (1h nmr, 13c nmr, ei-ms). | 2012 | 16022493 |
| the change of total anthocyanins in blueberries and their antioxidant effect after drying and freezing. | this study examined the effects of freezing, storage, and cabinet drying on the anthocyanin content and antioxidant activity of blueberries (vaccinium corymbosum l). fresh samples were stored for two weeks at $\5^\circ$ c while frozen samples were kept for up to three months at $-20^\circ$ c. there were two drying treatments, one including osmotic pretreatment followed by cabinet drying and the other involving only cabinet drying. total anthocyanins found in fresh blueberries were $7.2 \pm 0.5$ ... | 2004 | 15577185 |
| effect of high-oxygen atmospheres on blueberry phenolics, anthocyanins, and antioxidant capacity. | the influence of high oxygen concentrations on total phenolic, total anthocyanin, individual phenolic compounds, and antioxidant capacity (measured as oxygen radical absorbance capacity, orac) in highbush blueberry fruit (vaccinium corymbosum l. cv. duke) was investigated. freshly harvested blueberries were placed in jars ventilated continuously with air or with 40, 60, 80, or 100% o(2) at 5 degrees c for up to 35 days. samples were taken initially and at 7-day intervals during storage. whereas ... | 2003 | 14611188 |
| seasonal variation of temperature response of respiration in invasive berberis thunbergii (japanese barberry) and two co-occurring native understory shrubs in a northeastern us deciduous forest. | in the understory of a closed forest, plant growth is limited by light availability, and early leafing is proposed to be an important mechanism of plant invasion by providing a spring c "subsidy" when high light is available. however, studies on respiration, another important process determining plant net c gain, are rare in understory invasive plants. in this study, leaf properties and the temperature response of leaf respiration were compared between invasive berberis thunbergii, an early leaf ... | 2007 | 17609983 |
| intraspecific variation in aphid resistance and constitutive phenolics exhibited by the wild blueberry vaccinium darrowi. | illinoia pepperi (macgillivray) infests cultivated highbush blueberries, vaccinium corymbosum l., in the northeastern united states. allopatric resistance to i. pepperi was examined in vaccinium darrowi camp, which evolved in the absence of i. pepperi in the southeastern u.s. v. corymbosum cv. "elliott", was used as a susceptible control. between population variability in i. pepperi resistance was assessed by measuring length of the prereproductive period, fecundity, and survivorship on 14 v. da ... | 2007 | 17333374 |
| the influence of auxins on the biosynthesis of isoprene derivatives in callus cultures of vaccinium corymbosum var. bluecrop. | callus cultures of vaccinium corymbosum var. bluecrop were optimized for their isoprene derivatives production by supplementing schenk-hildebrandt (sh) medium with constant concentration of kinetin (2.32 microm) and two different amounts of selected auxins. every auxin, except for iba, used in 10-time higher concentration (2,4d, naa, iaa, noa) stimulated biosynthesis of beta-sitosterol and inhibited triterpene synthesis. quantitative analysis of isoprene derivatives in callus biomass collected o ... | 2013 | 16989318 |
| protective activities of vaccinium antioxidants with potential relevance to mitochondrial dysfunction and neurotoxicity. | both the neurotransmitter dopamine (da) and a neurotoxic metabolite, 6-hydroxy da, can be oxidized to generate hydrogen peroxide and other reactive species (ros). ros promote oxidative stress and have been implicated in dopaminergic neurodegeneration, e.g., parkinson's disease (pd). there is also evidence for a relation between catecholamine-mediated oxidative damage in dopaminergic neurons and the effects of these neurotransmitters on the redox state of cytochrome c (cytc). in neurons and other ... | 2007 | 16956663 |
| anthocyanins, phenolics, and antioxidant capacity in diverse small fruits: vaccinium, rubus, and ribes. | fruits from 107 genotypes of vaccinium l., rubus l., and ribes l., were analyzed for total anthocyanins (acy), total phenolics (tph), and antioxidant capacities as determined by oxygen radical absorbing capacity (orac) and ferric reducing antioxidant power (frap). fruit size was highly correlated (r = 0.84) with acy within vaccinium corymbosum l., but was not correlated to acy across eight other vaccinium species, or within 27 blackberry hybrids. certain vaccinium and ribes fruits with pigmented ... | 2002 | 11804523 |
| native vaccinium spp. and gaylussacia spp. infested by rhagoletis mendax (diptera: tephritidae) in the great lakes region: a potential source of inoculum for infestation of cultivated blueberries. | in this study, we addressed the question of whether or not native stands of blueberry (vaccinium spp.) and/or huckleberry (gaylussacia spp.) support populations of blueberry maggot, rhagoletis mendax curran, in the great lakes region. infestation of commercial blueberries by the blueberry maggot, r. mendax, is a serious problem in many areas where blueberries are grown. in the past 10-20 yr, commercial bighbush blueberry, vaccinium corymbosum l., production has expanded into places such as south ... | 2001 | 11777039 |
| evaluation of various deployment strategies of imidacloprid-treated spheres in highbush blueberries for control of rhagoletis mendax (diptera: tephritidae). | biodegradable, ammonium-baited spheres treated with the neonicotinoid insecticide provado (imidacloprid) at 2% (ai) were evaluated for controlling blueberry maggot flies, rhagoletis mendax curran. three strategies for sphere deployment in highbush blueberries, vaccinium corymbosum l., were compared with untreated control plots in 1999 and once again compared against control plots and organophosphate insecticide sprays in 2000. the patterns of sphere deployment were as follows: (1) perimeter depl ... | 2001 | 11561850 |
| oxygen radical absorbance capacity (orac) and phenolic and anthocyanin concentrations in fruit and leaf tissues of highbush blueberry. | antioxidant capacity, as measured by oxygen radical absorbance capacity (orac), and total phenolic and total anthocyanin contents were evaluated in fruit tissues of 87 highbush blueberry (vacciniumcorymbosum l.) and species-introgressed highbush blueberry cultivars. orac and phenolic levels were evaluated in leaf tissues of the same materials. average values for orac, phenolics, and anthocyanins in fruit were 15.9 orac units, 1.79 mg/g (gallic acid equivalents), and 0.95 mg/g (cyanidin-3-glucosi ... | 2001 | 11368580 |
| effect of pollen load size and source (self, outcross) on seed and fruit production in highbush blueberry cv. 'bluecrop' (vaccinium corymbosum; ericaceae). | reproductive fitness of a plant is ultimately determined by both number and quality of seed offspring. this is determined by sexual selection of pollen microspores and ovules during pollination and fertilization. these processes may include pollen competition and seed abortion, which reduce the number of microspores and ovules available for final seed production. thus, even an excess of pollen microspores to ovules does not result in fertile seeds equal to ovule number. we investigated pollen re ... | 2000 | 11080108 |
| identification of dehydrin-like proteins responsive to chilling in floral buds of blueberry (vaccinium, section cyanococcus). | the level of three major polypeptides of 65, 60, and 14 kd increased in response to chilling unit accumulation in floral buds of a woody perennial, blueberry (vaccinium, section cynaococcus). the level of the polypeptides increased most dramatically within 300 h of chilling and decreased to the prechilling level with the initiation of budbreak. cold-hardiness levels were assessed for dormant buds of vaccinium corymbosum and vaccinium ashei after different chilling treatments until the resumption ... | 1994 | 8016270 |
| growth characteristics and ion contents of non-selected and salt-selected callus lines of highbush blueberry (vacdnium corymbosum) cultivars blue crop and denise blue. | non-selected and sodium chloride selected callus lines of vacdnium corymbosum l.cv blue crop and cv. denise blue were grown on media supplemented with 0-100 mm nacl. for both cultivars, fresh weight and dry weight yields were greater in selected lines on all levels of nacl. selected lines of blue crop displayed better growth than selected lines of denise blue at most concentrations of nacl. internal na(+) and cl(-) concentrations in selected and non-selected lines of both cultivars increased as ... | 1990 | 24226601 |
| early-acting inbreeding depression and reproductive success in the highbush blueberry, vaccinium corymbosum l. | tetraploid vaccinium corymbosum genotypes exhibit wide variability in seed set following self- and cross-pollinations. in this paper, a post-zygotic mechanism (seed abortion) under polygenic control is proposed as the basis for fertility differences in this species. a pollen chase experiment indicated that self-pollen tubes fertilize ovules, but are also 'outcompeted' by foreign male gametes in pollen mixtures. matings among cultivars derived from a pedigree showed a linear decrease in seed numb ... | 1990 | 24226746 |
| production and viability of unreduced gametes in triploid interspecific blueberry hybrids. | three triploid (2n=3x=36) blueberry hybrids were obtained by hand-pollinating approximately 7,000 flowers of tetraploid highbush blueberry cultivars (based on vaccinium corymbosum l.) with pollen from the diploid species v. elliottii chapm. meiotic analysis of these triploids revealed trivalents, bivalents and univalents in all metaphase i cells, with lagging chromosomes evident at anaphase i. pollen of the three triploids was mostly aborted and did not stain with acetocarmine. however, the thre ... | 1988 | 24232275 |
| in vitro attempts to overcome the cross-incompatibility between vaccinium corymbosum l. and v. elliottii chapm. | seed was readily obtained from v. corymbosum zygotes using embryo rescue techniques, even when embryos were cultured at proembryonic stages. best in vitro seed development was obtained when ovules were cultured attached to placental tissues. successful fruit and seed development in culture occurred only when the fruit was cut longitudinally or when the basal portion of the fruit was removed previous to plating. addition of various vitamins, amino acids, and growth regulators to the nutrient medi ... | 1985 | 24254018 |
| anthocyanin and proanthocyanidin content in selected white and red wines. oxygen radical absorbance capacity comparison with nontraditional wines obtained from highbush blueberry. | antioxidant capacity, as measured by oxygen radical absorbance capacity (orac(pe)), total phenolic, total and individual anthocyanins, and proanthocyanidin fraction contents were evaluated in red and white wines from grapes. a comparison in terms of antioxidant capacity is made with nontraditional wines made from highbush blueberry. blueberries are among fruits that are best recognized for their potential health benefits. in red wines, total oligomeric proanthocyanidin content, including catechi ... | 2003 | 12903941 |
| oxygen radical absorbing capacity of phenolics in blueberries, cranberries, chokeberries, and lingonberries. | the antioxidant activity of phenolics in fruits of blueberry (vaccinium corymbosum cv. sierra), cranberry (vaccinium macrocarpon cv. ben lear), wild chokeberry (aronia melanocarpa), and lingonberry (vaccinium vitis-idaea cv. amberland) was determined in this study. the phenolic constituents and contents among the different berries varied considerably. anthocyanins were found to be the main components in all these berries. chlorogenic acid in blueberry, quercetin glycosides in cranberry and lingo ... | 2003 | 12517117 |