Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| stimulation of somatic embryogenesis and plant regeneration from anther culture of vitis vinifera cv. cabernet-sauvignon. | somatic embryogenesis and subsequent diploid plants have been obtained from anthers of vitis vinifera cabernet-sauvignon, a cultivar so far considered as recalcitrant to in vitro regeneration. anthers enclosing microspores near the first pollen mitosis were found to be the most responsive. however, from a practical point of view anther length proved to be an easier criterium for determining the optimal physiological anther stage. calli derived from the anther somatic tissues produced embryoids o ... | 1986 | 24248303 |
| changes in the activity of catalase (ec 1.11.1.6) in relation to the dormancy of grapevine (vitis vinifera l.) buds. | catalase activity in grapevine (vitis vinifera l.) buds cv. ;perlette.' increased to a maximum in october and thereafter decreased within 3 months to less than half its maximal rate. the decrease in catalase activity coincided with the decline in temperature during winter. the rate of sprouting of buds forced at 23 degrees c was negatively related to the activity of catalase. artificial chilling of grapevine canes at 5 degrees c resulted in a 25% decrease of catalase activity in the buds after 3 ... | 1986 | 16664957 |
| presence and identification of polyamines in xylem and phloem exudates of plants. | polyamines were identified by high performance liquid chromatography (benzoylation) and by thin layer chromatography (dansylation) in xylem exudates from stems of sunflowers (helianthus annuus [l.]), mung bean (vigna radiata [l.] wilczek), grapevine (vitis vinifera [l.] cv grenache), and orange (citrus sinensis [l.] osbeck, cv valencia), as well as in phloem sap (using elution into edta) of sunflower and mung bean plants. putrescine was the major polyamine detected, ranging in concentrations of ... | 1986 | 16665153 |
| separation of viroid rnas by cellulose chromatography indicating conformational distinctions. | a series of viroids and viroid-like rnas extracted from citron (citrus medica), grapevine (vitis vinifera), and avocado (persea americanum) displayed differential binding capacities to cellulose in the presence of ethanol. this nonionic interaction was influenced by the presence of magnesium ions suggesting variations in conformation among the viroid rnas and corresponding differences in reactivity with cellulose. the specific elution profiles present a basis for the subclassification of groups ... | 1986 | 3776103 |
| assimilation of 3h in photosynthesizing leaves exposed to hto. | potato and wine grape plants were exposed for a period of 4 h to tritiated water vapor, and simultaneously to 14co2 which served as a tracer for photosynthetic assimilation. during and after exposure, foliar samples were collected in which the exchangeable and nonexchangeable fractions of organic 3h were determined, taking care that the exchangeable fraction should not be lost to atmosphere. it was demonstrated that about 20% of the organic h in vegetation could be exchanged with 3h of tissue wa ... | 1984 | 6511427 |
| the effect of atmospheric pollution on vitis vinifera l. pollen ultrastructure under natural conditions. | the ultrastructural modification of pollen grains in vitis vinifera l. variety and hybrids in areas of so2 atmospheric pollution (the main polluting so2 usually reaches 2.72 mg/m3), nitrogen oxide, and other gases derived from noniron metal processing factories have been studied. strains 1001 and 1002, resistant varieties, do not undergo ultrastructural modifications. neuburger and issabelle, medium resistant ones, have a heterogeneity in ultrastructural organization from normal forms to forms h ... | 1984 | 6734498 |
| the physiological role of malic enzyme in grape ripening. | the high specificity of malic enzyme (me; ec 1.1.1.40) from grape berries (vitis vinifera l.) for the naturally occurring l-enantiomer of malic acid, its very selective c4-decarboxylation, and certain allosteric properties, reported previously, favour the conjecture of a regulatory function of me in fruit malic acid degradation. on the other hand, high me activity was detected even during the acid-accumulating phase of berry development. also, the in vitro reversibility of the reaction supports ... | 1984 | 24258672 |
| mutagen content of table wines made from various grape species and hybrid cultivars. | the mutagen content of wines produced from the european vitis vinifera grapes was compared with that of wines produced from hybrids of v. vinifera and species indigenous to north america. mutagens were extracted on an xad-2 amberlite resin column and activated with s-9 and/or faecalase in the salmonella/microsomal mutagen assay. all white wines had insignificant mutagen levels. the only red wine to produce statistically significant reversion frequencies was that made from the concord grape. the ... | 1984 | 6373529 |
| the effect of myo-inositol on the growth of callus tissue in vitis. | on m2-medium, which is a revised linsmaier and skoogmedium, callus tissue of vitis vinifera cv. müller-thurgau shows normal growth not dependent upon myo-inositol. callus cells of this cultivar may therefore be able to synthesize myo-inositol. callus cells of the cv. aris require myo-inositol and show increasing growth up to an optimum of 250 mg 1(-1). further increase of the myo-inositol concentration resulted in decreasing growth. growth promotion may be due to a higher cell division rate and ... | 1984 | 23195051 |
| endogenous gibberellin-like substances in somatic embryos of grape (vitis vinifera x vitis rupestris) in relation to embryogenesis and the chilling requirement for subsequent development of mature embryos. | endogenous gibberellin (ga)-like substances were examined in suspension cultures of somatic embryos of a hybrid grape (vitis vinifera x vitis rupestris) during embryogenesis, and in mature embryos chilled at 4 degrees c, and subsequently incubated at 26 degrees c with and without abscisic acid (aba). the extract was separated into a nonpolar fraction (would contain ga-precursors); a fraction that would contain free gas; and a highly h(2)o-soluble fraction (would contain ga glucosyl conjugates an ... | 1983 | 16663304 |
| determination of c distribution in photosynthetic serine and phosphoglycerate from grape leaves. | serine and phosphoglyceric acid are the classical marker intermediates of photorespiration and reductive carbon assimilation in c(3) plants. the present paper introduces a new and fast method for the determination of (14)c distribution in these compounds by selective elimination of c-3 (naio(4)) or c-1 (ninhydrin/ceric sulfate). reproducibility of the procedure was found to be better than +/-1% upon degradation of [u-(14)c]serine and [u-(14)c]glycerate standards.determination of labeling pattern ... | 1983 | 16663262 |
| [anthocyanosides extracted from vitis vinifera, vaccinium myrtillus and pinus maritimus. i. elastase-inhibiting activities in vitro. ii. compared angioprotective activities in vivo]. | 1983 | 6553084 | |
| pathway of photosynthetic malate formation in vitis vinifera, a c(3) plant. | the time course of intramolecular isotope distribution in phosphoglyceric acid and serine was determined after exposure of grape leaf discs (vitis vinifera l.) to (14)co(2) (1000 microliters per liter) for variable metabolic periods, and the labeling patterns were compared with the respective isotope distribution in the c(1-3) fragment of malic acid. the results clearly support the classical concept of a close precursor-product relationship between photosynthetic phosphoglycerate and malic acid. ... | 1983 | 16663263 |
| biogenesis of monoterpenes : bioconversion of citral by a cell suspension culture of muscat grapes. | cell suspension cultures of "muscat de frontignan" grapes vitis vinifera l. are able to convert citral (a mixture of neral and geranial) into the corresponding monoterpenic alcohols, nerol and geraniol. the geraniol formed is esterified into geranyl acetate. bioconversion of nerol or geraniol added alone to the cell suspension was also studied. interconversions between these different monoterpenic compounds are described and discussed. | 1982 | 24259016 |
| dormancy in somatic embryos and seeds ofvitis: changes in endogenous abscisic acid during embryogeny and germination. | abscisic acid (aba) in extracts of somatic embryos and seeds of gloryvine (vitis vinifera l.xv. rupestris scheele) was measured by gas chromatography-mass spectrometry-selected ion monitoring using deuterated aba, (±)-[c-3me-(2)h3]aba, ([(2)h3]aba) as internal standard. the aba content increased rapidly during embryogeny (0.035 ng/embryo at the globular stage to 0.22 ng/embryo at the mature stage). the level of aba in the tissues of somatic embryos, expressed in ng/mg dry weight, decreased from ... | 1982 | 24275974 |
| tissue origins, cell lineages and patterns of cell division in the developing dermal system of the frut of vitis vinifera l. | cell division during development of the dermal system of fruit of the grape cv. gordo is confined to the first growth period. the epidermis is conserved with anticlinal proliferative cell divisions providing for increase in cell number. the hypodermis is the layer of origin of the collenchymatous dermal system. six or seven layers are differentiated by periclinal cell divisions early in the first growth period, and later increase in size is obtained by proliferative anticlinal cell divisions. th ... | 1981 | 24302105 |
| monitoring of grape harvesters for evidence of cholinesterase inhibition. | this report describes the results of a long-term monitoring study of 36 grape harvesters who were occupationally exposed to organophosphate pesticide residues following reentry into vineyards during september and october 1976. the study was designed to evaluate biochemical parameters associated with organophosphate pesticide residues. insignificant changes in blood cholinesterase activity were found. some workers had very low levels of organophosphate metabolites in the urine during the entire 6 ... | 1981 | 7265295 |
| interaction between meloidogyne arenaria and glomus fascicuqlatus in grape. | root zones of grape (fitis vinifera cv thompson seedless) cuttings were infested with chlamydospores of glomus fasciculatus or eggs of meloidogyne arenaria or both. growth of grapevines was greatest in mycorrhizal (g. fasciculatus) plants. mycorrhizal development and growth of mycorrhizal and nonmycorrhizal plants were reduced in the presence of m. arenaria. at low initial nematode inoculum (pi) levels (approx. 200 eggs/plant), the presence of mycorrhizae enhanced plant growth during 1 yr, but n ... | 1981 | 19300722 |
| flowering in vitis: conversion of tendrils into inflorescences and bunches of grapes. | inflorescences and fruits with viable seeds were produced in place of tendrils in plants of vitis vinifera l. cv. "muscat of alexandria" and in a staminate hybrid grapevine (vitis vinifera x v. rupestris scheele) following repeated applications of 10-20 μl of 50-200 μm 6-(benzylamino)-9-(2-tetrahydropyranyl)-9h-purine (pba) to apices. young leaves, shoot tips and axillary buds were removed before the pba treatments were commenced. the number and weight of berries produced by inflorescences deriv ... | 1979 | 24317675 |
| quantitative aspects of the development of meloidogyne arenaria larvae in grapevine varieties and rootstocks. | the development and productivity of parasitic stages of meloidogyne arenaria were quantitatively defined in 14 varieties or rootstocks of grapevine. mean development to maturity was related linearly to the number of degree-hours above 10 c temperature experienced from the time of penetration in all cultivars in which nematode adulthood was achieved. averaged across varieties, 13,142 heat units were required for development of the mean individual to maturity. the standard deviation of the develop ... | 1979 | 19305553 |
| enzymes of krebs-henseleit cycle in vitis vinifera l: iii. in vivo and in vitro studies of arginase. | the presence of arginase (ec 3.5.3.7) in various tissues from vitis vinifera l. cultivars was demonstrated by both in vivo and in vitro enzyme assays. initial velocities determined by the two methods were in close agreement. optimum conditions for maximum enzyme activity were 25 to 30 millimolar l-arginine, about 1 millimolar mn(2+) (ph 9.4 to 9.8), and incubation temperature of 37 to 38 c. l-arginine hydrolysis was linear with increasing sliced fresh tissue up to 500 milligrams for in vivo assa ... | 1978 | 16660514 |
| enzymes of krebs-henseleit cycle in vitis vinifera l: ii. arginosuccinate synthetase and lyase. | arginosuccinate (asa) synthetase and lyase activities were detected in extracts from vitis vinifera l. cv. chenin blanc mature leaves and seedlings. optimum reaction conditions for asa synthetase were 10 millimolar l-citrulline, 7.5 millimolar l-aspartate, 3 to 4 millimolar atp, 12 millimolar mg(2+) (ph 7.5 to 8.0), enzyme extract up to equivalent of about 200 milligrams of fresh tissue, and incubation temperature of 38 to 40 c. optimum reaction conditions for asa lyase were 4 millimolar asa-k s ... | 1978 | 16660513 |
| enzymes of krebs-henseleit cycle in vitis vinifera l: i. ornithine carbamoyltransferase: isolation and some properties. | ornithine carbamoyltransferase (oct) activity was detected in extracts from mature leaves, fruit, germinating seeds, and seedlings of vitis vinifera l. michaelis-menten constants for oct were 3.5 millimolar for carbamyl phosphate and 5.5 millimolar for l-ornithine. concentrations of l-ornithine greater than 10 millimolar slightly inhibited the enzyme, whereas carbamyl phosphate at concentrations greater than the optimal (about 10 millimolar) did not affect oct activity. l-citrulline formation wa ... | 1978 | 16660512 |
| α-glucosidase from grape berries: partial purification and characterization. | α-glucosidase (α-d-glucoside glucohydrolase ec 3.2.1.20) was purified approximately 30-fold from grape berries (vitis vinifera var. riesling). besides maltose the enzyme preparation hydrolyzes to a lesser extent maltotriose, isomaltose, and starch. it has a ph optimum of 5.1 and a molecular weight of about 100,000. tris, glycerol, several mono-and disaccharides were tested as inhibitors. the kinetic behavior of ribose, fructose, cellobiose, sucrose, turanose, methylglucopyranoside, tris, and gly ... | 1978 | 24408102 |
| control of flowering in the grapevine (vitis vinifera l.): formation of inflorescences in vitro by isolated tendrils. | tendrils produced from shoot tips of grapevine (vitis vinifera l.) cultured in vitro on nitsch's medium developed into inflorescences when 5 to 10 mum benzyladenine (ba) or 6-(benzylamino)-9-(2-tetrahydropyranyl)-9h-purine (pba) were applied directly to the tendril tips. inflorescences did not form on tendrils if the cytokinins were supplied in the agar. tendrils cultured in agitated liquid medium containing ba, pba, or zeatin riboside showed profuse branching and tendrils were transformed into ... | 1978 | 16660225 |
| factors affecting the extraction of intact ribonucleic acid from plant tissues containing interfering phenolic compounds. | using conventional methods it is impossible to extract rna as uncomplexed intact molecules from the leaves of grapevines (vitis vinifera l.) and from a number of woody perennial species that contain high levels of reactive phenolic compounds. a procedure involving the use of high concentrations of the chaotropic agent sodium perchlorate prevents the binding of phenolic compounds to rna during extraction. analyses of the phenolics present in plant tissues used in these experiments indicate that t ... | 1977 | 16660134 |
| the effect of fruit-removal on cytokinins and gibberellin-like substances in grape leaves. | removal of fruit from potted cuttings of vitis vinifera l. increased the concentration of a cytokininglucoside in leaf tissue extracts and decreased the level of extractable gibberellin-like substances. the glucoside (of zeatin riboside) is not present in xylem exudate of v. vinifera l., and appears to be synthesized in the leaves. berry extracts contain zeatin-riboside and smaller amounts of cytokinin-glucoside. the changes in the level of these hormones are discussed in relation to previous re ... | 1977 | 24420222 |
| observations on the host-parasite relationship of pratylenchus vulnus on grapevine, vitis vinifera. | 1977 | 19305574 | |
| changes in anthocyanin and phenolics content of grapevine leaf and fruit tissues treated with sucrose, nitrate, and abscisic acid. | sucrose (0.04 to 0.12 m) induces accumulation of both total phenolics and anthocyanin in leaf discs of grapevine (vitis vinifera l.) incubated in intermittent light. abscisic acid (20 mum) and 2-chloroethyl phosphonic acid (60 mum) act synergistically with the sucrose to enhance its induction of both total phenolics and anthocyanin. the magnitude of this interaction depends on leaf age. nitrate (30 mm) inhibits sucrose induction of phenolics and anthocyanin. levels of total phenolics and anthocy ... | 1976 | 16659699 |
| scanning electron microscopy of cell wall formation around isolated plant protoplasts. | the process of cell wall regeneration around two species of higher plant protoplasts has been studied using reflection scanning electron microscopy. the first stage in the process is the formation of short fibres from randomly spaced centres. with protoplasts of tobacco leaf (nicotiana tabacum l., cv white burley) these fibres then elongate and interlace apparently at random to give rise to a matted continuous layer of wall. protoplasts of a suspension culture of grapevine cells (vitis vinifera ... | 1976 | 24424768 |
| ultrastructural studies of the binding of concanavalin a to the plasmalemma of higher plant protoplasts. | the binding of concanavalin a to the plasmalemma of higher plants has been studied using protoplasts of two species. the lectin aggregates both tobacco (nicotiana tabacum l.) leaf protoplasts and protoplasts prepared from a suspension cell culture of grapevine (vitis vinifera l.). differences in lectin binding have been investigated using concanavalin a conjugated to ferritin or bound to colloidal gold. tobacco protoplasts exhibit continuous and saturated labelling of the plasmalemma surface wit ... | 1976 | 24424545 |
| effects of pratylenchus vulnus and xiphinema index singly and combined on vine growth of vitis vinifera. | inoculation of 'thompson seedless' grapevines with 500 xiphinerna index or 1,000 pratylenchus vulnus alone or in combination suppressed vine shoot and root growth under greenhouse conditions. pratytenchus vulnus caused greater stunting of roots than x. index. each nematode species inhibited top growth about equally. concomitant inoculations caused greater stunting of tops and roots than did inoculations of either nematode species alone. differences in growth between inoculated and control plants ... | 1976 | 19308243 |
| the influence of temperature on malic acid metabolism in grape berries: i. enzyme responses. | phosphoenolpyruvate (pep) carboxylase activity in immature ;carignane' grape berries (vitis vinifera l.) had a temperature optimum of about 38 c, whereas malic enzyme activity rose with increasing temperature between 10 and 46 c. in vitro temperature inactivation rates for the pep carboxylase were markedly greater than for the malic enzyme activity. from the simultaneous action of malic acid-producing enzymes (pep carboxylase and malic dehydrogenase) and malic acid-degradating enzyme (malic enzy ... | 1975 | 16659305 |
| relationship of grapevine yield and growth to nematode densities. | yield, growth, and vigor of individual grape vines were correlated with nematode population densities in a series of california vineyards. in a hanford sandy loam soil, xiphinema americanum densities showed negative correlations with yield, growth, and vigor of vines. when vines were categorized according to vigor, x. americanurn densities had little relationship to yield of high-vigor vines, but were negatively correlated with yield of low-vigor vines. densities of paratylenchus harnatus were p ... | 1975 | 19308172 |
| [on the rhizosphere microflora of the grape vine (vitis vinifera ssp. sativa, proles pontica, subproles balcanica, a.m. negrul) "kadarka". ii. effects of antibiotics on the bacteria of rhizosphere and the growth of grape vine influenced by these bacteria (author's transl)]. | 1974 | 4480499 | |
| [on the rhizosphere microflora of the grape vine (vitis vinifera ssp. sativa, proles pontica, subproles balcanica. a.m. negrul) "kadarka". i. morphological, biochemical, and serological characterization of bacteria (author's transl)]. | 1974 | 4211535 | |
| rapid estimates of relative water content. | relative water content may be accurately estimated using the ratio of tissue fresh weight to tissue turgid weight, termed here relative tissue weight. that relative water content and relative tissue weight are linearly related is demonstrated algebraically. the mean value of r(2) for grapevine (vitis vinifera l. cv. shiraz) leaf tissue over eight separate sampling occasions was 0.993. similarly high values were obtained for maize (zea mays cv. cornell m-3) (0.998) and apple (malus sylvestris cv. ... | 1974 | 16658686 |
| the hormone content of ripening grape berries and the effects of growth substance treatments. | berries on field-grown vitis vinifera cv. doradillo were treated at different times during stage ii with benzothiazole-2-oxyacetic acid or 2-chloroethylphosphonic acid, and measurements were made of their growth and hormone content. the concentration of ethylene was low during stage ii and declined as berries ripened. both 2-chloroethylphosphonic acid and benzothiazole-2-oxyacetic acid caused increases in ethylene concentration, yet they had varying effects on ripening: the former applied at the ... | 1973 | 16658384 |
| benzyladenine-induced movement of c-labeled photosynthate into roots of vitis vinifera. | roots of vitis vinifera l., were treated with benzyladenine when the plant shoots were 38 cm long. seventy-two hours after benzyladenine treatment, apical or basal leaves on separate shoots were exposed to (14)co(2). control shoots received (14)co(2) but no benzyladenine. application of benzyladenine directed (14)c-photosynthate to roots, but a small amount of radioactivity was detected in the shoot tip when (14)co(2) was administered to an apical leaf. distribution of radioactivity among the su ... | 1973 | 16658327 |
| [eco-physiological investigations on wild and cultivated plants in the negev desert : iii. daily courses of net photosynthesis and transpiration at the end of the dry period]. | the daily course of net photosynthesis and transpiration was measured with temperature and humidity controlled cuvettes at the end of the dry summer season in the negev desert. species studied included: dominant species of the natural vegetation, cultivated plants in the run-off farm avdat and permanently irrigated plants. an analysis of the influence of single climatic factors on gas exchange was given in part ii of this publication. the reactions of the plants to complex changes in all the env ... | 1972 | 28313070 |
| [eco-physiological investigations on wild and cultivated plants in the negev desert : ii. the influence of climatic factors on carbon dioxide exchange and transpiration at the end of the dry period]. | the influence of climatic factors on net photosynthesis, dark respiration and transpiration was investigated in the negev desert at the end of the dry summer period when plant water stress was at a maximum. species studied included: dominant species of the natural vegetation (artemisia herba-alba, hammada scoparia, noaea mucronata, reaumuria negevensis, salsola inermis, zygophyllum dumosum), cultivated plants receiving rainfall and run-off water during the winter season in the run-off farm avdat ... | 1972 | 28311256 |
| biochemical changes in terminal root galls caused by an ectoparasitic nematode, longidorus africanus: amino acids. | the amino acids of terminal root galls caused by longidorus africanus on bur marigold (bidens tripartita l.) and grapevine (vitis vinifera l.) were studied. the galled roots of bur marigold contained 73% more cell-wall protein and 184% more free amino acids. the main changes among the free amino acids of the galled tissue were a large increase (1900%) in proline and a decrease in aspartic acid (56%) compared with the respective check tissue. hydroxyproline decreased in the wall protein fraction ... | 1971 | 19322388 |
| [after-effects in untreated progenies from chickens treated with the products from resistant interspecific grape-vine hybrids]. | feeding hens and cocks for 6-8 weeks with the products - wines and juices - from ± resistant interspecific grapevine varieties (f1, f2r), i.e. from crosses between sensitive types of vitis vinifera and ± resistant american wild types, led to physiological changes of the treated animals. these changes became evident by more than 40% of malformations, especially of legs and plumage, among the individuals of their untreated f1 progeny. these effects proved to be reproducable.among the f2-individual ... | 1971 | 24430524 |
| modification of pattern of photosynthate movement within and between shoots of vitis vinifera l. | during the prebloom and bloom stages, no movement of labeled photosynthates occurred from a shoot of vitis vinifera l. fed with (14)co(2), to an adjacent shoot on the same spur. movement of labeled assimilates into the unfed shoot was induced when this shoot was sprayed with 2.89 x 10(-3)m gibberellic acid during the prebloom stage. during the bloom stage darkening or defoliation of the unfed shoot resulted in the import of labeled photosynthates from the adjacent fed shoot. similarly, movement ... | 1970 | 16657499 |
| effects of ethylene and 2-chloroethylphosphonic acid on the ripening of grapes. | the effects of ethylene gas, 2-chloroethylphosphonic acid, and the auxin, benzothiazole-2-oxyacetic acid, on the ripening of grapes (vitis vinifera l.) was investigated. ethylene hastened the start of ripening of doradillo grapes when it was aplied for 10 days starting midway through the slow growth phase. 2-chloroethylphosphonic acid applied to shiraz grapes showed the same effect, but when it was applied earlier, during the second half of the first rapid growth phase or at the start of the slo ... | 1970 | 16657356 |
| [equipment for the promotion of germination of vine seeds (vitis vinifera l.) with sterile surfaces under sterile conditions]. | 1970 | 5537389 | |
| [sterilization of the surface of grape (vitis vinifera l.) seeds]. | 1970 | 5535934 | |
| influence of benzyladenine, leaf darkening, and ringing on movement of c-labeled assimilates into expanded leaves of vitis vinifera l. | leaves of vitis vinifera l., nearly fully expanded, imported only trace amounts of (14)c following assimilation of (14)co(2) by a lower leaf on the same shoot, but benzyladenine (ba) application at 4.4 x 10(-3)m caused a marked increase in the movement of (14)c into these leaves. older leaves near the shoot base were less responsive; ba treatment alone had little effect on import of labeled assimilates from adjacent leaves but when the ba-treated leaves were darkened there was an increased impor ... | 1969 | 16657198 |
| increases in the levels of cytokinins in bleeding sap of vitis vinifera l. after ccc treatment. | paper-chromatogramed extracts of bleeding sap from grapevines treated with (2-chloroethyl)trimethylammonium chloride (ccc) contained higher levels of substances with cytokinin activity than did untreated plants. with the chromatographic solvent used, ccc was unlikely to interfere with the expression of the cytokinin response. | 1968 | 17773238 |
| gibberellin-like activity in berries of seeded and seedless tokay grapes. | gibberellin-like activity in berries of both ;tokay' (seeded) and ;seedless tokay' grapes (vitis vinifera l.) at different stages of development was determined. activity in both seeded and seedless berries was mainly in the acidic ethyl acetate fraction. in seeded berries there was very high activity beginning at the early fruit-set stage and persisting for about 3 weeks after which the activity fell to low level and vanished by the middle of july. on august 1 there was another activity peak. th ... | 1968 | 16656767 |
| gonadotropin promotion of adventitious root production on cuttings of begonia semperflorens and vitis vinifera. | adventitious rooting of begonia semperflorens cv. indian maid and vitis vinifera cv. semillon stem cuttings was significantly promoted by human chorionic gonadotropin (hcg). basal sections of hcg treated cuttings upon which promoted rooting took place had markedly less endogenous gibberellin (ga) activity than non-treated controls or apical sections of treated ones, while changes in auxin levels were not found. hcg also inhibited ga(3)-induced reducing sugar release from embryoless barley endosp ... | 1968 | 5641189 |
| gibberellin-like substances in root exudate of vitis vinifera. | the levels of gibberellin (ga)-like activity in the root exudate of two seedless varieties of vitis vinifera were examined by the barley endosperm assay, and compared with levels determined for other parts of the plant. that activity was due to ga-like substances was confirmed with dwarf-5 corn.when acidic, ethyl acetate soluble ga-like substances from sap and leaf extracts were chromatogrammed on thin layers of silica gel in chloroform/ethyl acetate/formic acid (50:50:1), activity moved to the ... | 1967 | 24549951 |
| effect of root temperature on cytokinin activity in root exudate of vitis vinifera l. | root exudates of plants of vitis vinifera l. cv. thompson seedless, grown in nutrient cultures with root temperatures maintained at either 20 degrees or 30 degrees and with shoots at a common air temperature, were assayed for cytokinin activity. after chromatography of freeze-dried sap on paper with n-butanol/acetic acid/water (4:1:1). activity was detected with a soybean callus assay. for both root temperatures, major activity appeared between r(f) 0.6 and r(f) 0.8, at about the same concentrat ... | 1967 | 16656625 |
| effect of ccc on the growth of roots of vitis vinifera l. | when plants of vitis vinifera l. were grown in solution cultures containing (2-chloroethyl)trimethylammonium chloride (ccc), roots became shorter and thicker than those of untreated control plants. the effect of ccc on vine roots could be counteracted by gibberellic acid simultaneously applied either to the solution cultures or to aerial organs of the plant. | 1967 | 24522506 |
| sex conversion in a male vitis vinifera l. by a kinin. | a synthetic (reputed) kinin, sd 8339, at 1000 parts per million in alcohol solution, applied to flower clusters of a male grapevine about 3 weeks before anthesis, completely converted the flower sex from male to hermaphrodite. indolebutyric acid, 2,3,5-triiodobenzoic acid, 2-chloroethyltrimethylammonium chloride beta-naphthoxyacetic acid, beta-indoleacetic acid, alpha-naphthaleneacetic acid, and gibberellin a(3) failed to modify the sex. | 1966 | 17755400 |
| sugars and organic acids of vitis vinifera. | glucose, fructose, galactose, sucrose, maltose, melibiose, raffinose, and stachyose were identified in the leaves, bark, roots, and berries of vitis vinifera l. var. thompson seedless. in addition to these sugars, verbascose and manninotriose were found in the leaves and bark.malic, tartaric, citric, isocitric, ascorbic, cis-aconitic, oxalic, glycolic, glyoxylic, succinic, lactic, glutaric, fumaric, pyrrolidone carboxylic, alpha-ketoglutaric, pyruvic, oxaloacetic, galacturonic, glucuronic, shiki ... | 1966 | 16656357 |
| relation of seededness and ringing to gibberellin-like activity in berries of vitis vinifera. | 1965 | 16656155 | |
| relation of ringing to gibberellin-like activity in berries of vitis vinifera l. | 1965 | 5836339 | |
| influence of environment on metabolism of organic acids and carbohydrates in vitis vinifera. i. temperature. | 1964 | 16656026 | |
| [research on vine rhizosphere (vitis vinifera)]. | 1963 | 14048728 | |
| relationship of growth and development to changes in sugars, auxins, and gibberellins in fruit of seeded and seedless varieties of vitis vinifera. | 1960 | 16655336 | |
| prolonging dormancy in vitis vinifera with gibberellin. | 1959 | 13657050 | |
| [examination of yeast fungi in wine grapes in bulgaria]. | 1957 | 13525060 | |
| starch and sugars of vitis vinifera. | 1945 | 16653997 | |
| carbohydrate metabolism of vitis vinifera: hemicellulose. | 1938 | 16653495 | |
| parthenocarpy and seedlessness in vitis vinifera. | 1932 | 17842446 | |
| the constituents of the sap of the vine (vitis vinifera l.). | 1924 | 16743387 | |
| date palm tree (phoenix dactylifera l.): natural products and therapeutic options. | many plants, including some of the commonly consumed herbs and spices in our daily food, can be safely and effectively used to prevent and/or treat some health concerns. for example, caffeine the active ingredient found in coffee beans (coffea), shows biological activity in the treatment of the central nervous system (cns) disorders, indole-3-carbinol, and 3,3'-diindolylmethane are both broccoli (brassica oleracea) derived phytochemicals with potential anti-cancer activity, and resveratrol, isol ... | 0 | 28588600 |
| use of natural diversity and biotechnology to increase the quality and nutritional content of tomato and grape. | improving fruit quality has become a major goal in plant breeding. direct approaches to tackling fruit quality traits specifically linked to consumer preferences and environmental friendliness, such as improved flavor, nutraceutical compounds, and sustainability, have slowly been added to a breeder priority list that already includes traits like productivity, efficiency, and, especially, pest and disease control. breeders already use molecular genetic tools to improve fruit quality although most ... | 0 | 28553296 |
| low source-sink ratio reduces reserve starch in grapevine woody canes and modulates sugar transport and metabolism at transcriptional and enzyme activity levels. | severe leaf removal decreases storage starch and sucrose in grapevine cv. cabernet sauvignon fruiting cuttings and modulates the activity of key enzymes and the expression of sugar transporter genes. leaf removal is an agricultural practice that has been shown to modify vineyard efficiency and grape and wine composition. in this study, we took advantage of the ability to precisely control the number of leaves to fruits in cabernet sauvignon fruiting cuttings to study the effect of source-sink ra ... | 0 | 28526983 |
| grape composition under abiotic constrains: water stress and salinity. | water stress and increasing soil salt concentration represent the most common abiotic constrains that exert a negative impact on mediterranean vineyards performance. however, several studies have proven that deficit irrigation strategies are able to improve grape composition. in contrast, irrigation with saline waters negatively affected yield and grape composition, although the magnitude of these effects depended on the cultivar, rootstock, phenological stage when water was applied, as well as ... | 0 | 28611795 |
| different exogenous sugars affect the hormone signal pathway and sugar metabolism in "red globe" (vitis vinifera l.) plantlets grown in vitro as shown by transcriptomic analysis. | exogenously applied 2% fructose is the most appropriate carbon source that enhances photosynthesis and growth of grape plantlets compared with the same concentrations of sucrose and glucose. the role of the sugars was regulated by the expression of key candidate genes related to hormones, key metabolic enzymes, and sugar metabolism of grape plantlets ( vitis vinifera l.) grown in vitro. the addition of sugars including sucrose, glucose, and fructose is known to be very helpful for the developmen ... | 0 | 28550410 |
| diosmin/essential oil combination for dermal photo-protection using a lipoid colloidal carrier. | solar irradiation induces skin inflammatory processes causing deleterious effects like premature ageing. in this study, the designed lipoid colloidal carrier (lcc) was loaded with diosmin in combination with different essential oils, to be used as a topical photo-protective preparation. to investigate the ability of the essential oils to potentiate diosmin effects, the diosmin/essential oil-loaded lccs (lcc2, lcc3 and lcc4) were compared to the diosmin-loaded lcc (lcc1). the incorporated essenti ... | 0 | 28390258 |
| relationship among color development, anthocyanin and pigment-related gene expression in 'crimson seedless' grapes treated with abscisic acid and sucrose. | 'crimson seedless' is one of the most important table grape varieties in chile, but under certain environmental conditions, the fruit exhibits inadequate red color development, causing economic losses due to lower product quality. the use of plant growth regulators, such as abscisic acid (aba) and ethylene, during development increases the anthocyanin content of the skin, improving the color of the berry. recently, sucrose has been identified as a signaling molecule capable of regulating the exp ... | 0 | 28412633 |
| isolation of native proanthocyanidins from grapevine (vitis vinifera) and other fruits in aqueous buffer. | condensed tannins (also called proanthocyanidins) present in strategic tissues of fruits (outer pericarp and vascular bundles) were known as short polymers of flavan-3-ols. a pretreatment of the plant material (fruits from the grapevine, persimmon) with buffered ascorbic acid and triton x-100 followed by acetone extraction provided native white fully depolymerizable tannins. tannins are usually extracted with aqueous solvents and further purified, although artifactual oxidations occur, altering ... | 0 | 28291348 |
| identification and organoleptic contribution of (z)-1,5-octadien-3-one to the flavor of vitis vinifera cv. merlot and cabernet sauvignon musts. | the main goal of this research was to identify key aroma compounds involved in the dried fruits (prune and dried fig) aroma of musts. an odoriferous zone (oz) was detected by gas chromatography coupled with olfactometry (gc-o) and identified as (z)-1,5-octadien-3-one (geranium). a quantitation method by spme-gc-ms (ci, meoh) was developed and validated for assaying this very fragrant ketone in musts for the first time (lod, 0.15 ng/l; loq, 0.5 ng/l). concentrations of (z)-1,5-octadien-3-one in m ... | 0 | 28190353 |
| transcriptomic analyses of ascorbic acid and carotenoid metabolites influenced by root restriction during grape berry development and ripening. | ascorbic acid (asa) and carotenoids are recognized as crucial metabolites for various biological processes in plants. the contents of asa and carotenoids in fruits are influenced by external environmental stimuli, such as water, temperature, light, and hormones. however, it is still not clear whether it can be affected by root restriction (rr) treatment. in this study, "summer black" grape berries (vitis vinifera × v. labrusca) under rr and control treatments during development and ripening were ... | 0 | 28177240 |
| rna-sequencing reveals biological networks during table grapevine ('fujiminori') fruit development. | grapevine berry development is a complex and genetically controlled process, with many morphological, biochemical and physiological changes occurring during the maturation process. research carried out on grapevine berry development has been mainly concerned with wine grape, while barely focusing on table grape. 'fujiminori' is an important table grapevine cultivar, which is cultivated in most provinces of china. in order to uncover the dynamic networks involved in anthocyanin biosynthesis, cell ... | 0 | 28118385 |
| resveratrol as an anticancer agent: a review. | owing to their antimicrobial, antioxidant, and anti-inflammatory activity, grapes (vitis vinifera l.) are the archetypal paradigms of fruits used not only for nutritional purposes but also for exclusive therapeutics. grapes are a prominent and promising source of phytochemicals, especially resveratrol, a phytoalexin antioxidant found in red grapes which has both chemopreventive and therapeutic effects against various ailments. resveratrol's role in reducing different human cancers, including bre ... | 0 | 28001084 |
| aba and ga3 regulate the synthesis of primary and secondary metabolites related to alleviation from biotic and abiotic stresses in grapevine. | plants are able to synthesize a large number of organic compounds. among them, primary metabolites are known to participate in plant growth and development, whereas secondary metabolites are mostly involved in defense and other facultative processes. in grapevine, one of the major fruit crops in the world, secondary metabolites, mainly polyphenols, are of great interest for the wine industry. even though there is an extensive literature on the content and profile of those compounds in berries, s ... | 0 | 27998613 |
| potential health benefits and quality of dried fruits: goji fruits, cranberries and raisins. | dried fruits are important snacks and additives to other foods due to their taste and nutritional advantages. therefore there is an important goal to control the quality of the food on the market for consumer's safety. antioxidant activity of goji fruits (lycium barbarum), cranberries (vaccinium macrocarpon and oxycoccus) and raisins (vitis vinifera) were studied using the dpph (2,2-diphenyl-1-picrylhydrazyl) and folin-ciocalteu assays. cu, mn and ge influencing antioxidant activity were determi ... | 0 | 27979197 |
| extracellular vesicles in food: experimental evidence of their secretion in grape fruits. | in the last decade, the number of studies related with extracellular vesicles (evs) has dramatically grown since their role as key part of intercellular communication has been confirmed. evs, as transporter of distinct bioactive molecules, can take part in different physiological mechanisms and have been gaining attention as potential tools with a wide range of therapeutic effects. whereas a high number of studies have been published related to mammalian derived evs, including products as food s ... | 0 | 27664331 |
| the photomorphogenic factors uv-b receptor 1, elongated hypocotyl 5, and hy5 homologue are part of the uv-b signalling pathway in grapevine and mediate flavonol accumulation in response to the environment. | grapevine (vitis vinifera l.) is a species well known for its adaptation to radiation. however, photomorphogenic factors related to uv-b responses have not been molecularly characterized. we cloned and studied the role of uv-b receptor (uvr1), elongated hypocotyl 5 (hy5), and hy5 homologue (hyh) from v. vinifera we performed gene functional characterizations, generated co-expression networks, and tested them in different environmental conditions. these genes complemented the arabidopsis uvr8 and ... | 0 | 27543604 |
| investigation of anti-asthmatic potential of dried fruits of vitis vinifera l. in animal model of bronchial asthma. | fruits of vitis vinifera l., commonly known as grapes, are largely consumed worldwide because of their high nutritional and medicinal benefits. | 0 | 27536321 |
| evaluation of the anti-inflammatory activity of raisins (vitis vinifera l.) in human gastric epithelial cells: a comparative study. | raisins (vitis vinifera l.) are dried grapes largely consumed as important source of nutrients and polyphenols. several studies report health benefits of raisins, including anti-inflammatory and antioxidant properties, whereas the anti-inflammatory activity at gastric level of the hydro-alcoholic extracts, which are mostly used for food supplements preparation, was not reported until now. the aim of this study was to compare the anti-inflammatory activity of five raisin extracts focusing on inte ... | 0 | 27447609 |
| field-grown grapevine berries use carotenoids and the associated xanthophyll cycles to acclimate to uv exposure differentially in high and low light (shade) conditions. | light quantity and quality modulate grapevine development and influence berry metabolic processes. here we studied light as an information signal for developing and ripening grape berries. a vitis vinifera sauvignon blanc field experiment was used to identify the impacts of uvb on core metabolic processes in the berries under both high light (hl) and low light (ll) microclimates. the primary objective was therefore to identify uvb-specific responses on berry processes and metabolites and disting ... | 0 | 27375645 |
| review of the pharmacological effects of vitis vinifera (grape) and its bioactive constituents: an update. | vitis vinifera fruit (grape) contains various phenolic compounds, flavonoids and stilbenes. in recent years, active constituents found in the fruits, seeds, stems, skin and pomaces of grapes have been identified and some have been studied. in this review, we summarize the active constituents of different parts of v. vinifera and their pharmacological effects including skin protection, antioxidant, antibacterial, anticancer, antiinflammatory and antidiabetic activities, as well as hepatoprotectiv ... | 0 | 27196869 |
| grapes (vitis vinifera) as a potential candidate for the therapy of the metabolic syndrome. | metabolic syndrome is associated with several disorders, including hypertension, diabetes, hyperlipidemia as well as cardiovascular diseases and stroke. plant-derived polyphenols, compounds found in numerous plant species, play an important role as potential treatments for components of metabolic syndrome. studies have provided evidence for protective effects of various polyphenol-rich foods against metabolic syndrome. fruits, vegetables, cereals, nuts, and berries are rich in polyphenolic compo ... | 0 | 26800498 |
| aflatoxins b1, b2, g1, and g2 contamination in ground red peppers commercialized in sanliurfa, turkey. | aflatoxins (afs) are hepatogenic, teratogenic, imunosuppressive, and carcinogenic fungal metabolites found in feeds, nuts, wine-grapes, spices, and other grain crops. humans are exposed to afs via consumption of mycotoxin-contaminated foods. this study aimed to determine the prevalence of af contamination in powdered red peppers sold in sanliurfa. a total of 42 samples were randomly collected from retail shops, supermarkets, open bazaars, and apiaries and examined for the occurrence and levels o ... | 0 | 25773893 |
| bone health nutraceuticals alter microarray mrna gene expression: a randomized, parallel, open-label clinical study. | dietary intake of fruits and vegetables has been suggested to have a role in promoting bone health. more specifically, the polyphenols they contain have been linked to physiological effects related to bone mineral density and bone metabolism. in this research, we use standard microarray analyses of peripheral whole blood from post-menopausal women treated with two fixed combinations of plant extracts standardized to polyphenol content to identify differentially expressed genes relevant to bone h ... | 0 | 26902403 |