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PubMed1994

Recombinant beet curly top virus genomes exhibit both parental and novel pathogenic phenotypes.

Recombinant genomes derived from the Logan and CFH strains of the geminivirus beet curly top virus (BCTV) have been constructed and analyzed for pathogenicity on Nicotiana benthamiana and sugar beet (Beta vulgaris L.). Infectivity assays indicated that the latent period on N. benthamiana was primarily determined by a DNA fragment bearing the leftward open reading frames (ORFs) L1, L2, L3, and L4. Recombinants bearing leftward ORFs from the CFH strain were characterized as having a short latent period (mean = 6-11 days), while the reciprocal recombinants bearing leftward ORFs from the Logan strain had latent periods defined as long (mean = 16-22 days). Infectivity assays on sugar beet indicated that certain recombinant BCTV genomes exhibited novel pathogenic properties not common to either wild type strain, including the loss of systemic movement and replication competency, or asymptomatic systemic infection of sugar beet. The results indicate that N. benthamiana is a more permissive host than sugar beet with respect to heterologous combinations of BCTV genes, and that pathogenicity and virulence of BCTV in sugar beet requires the interaction of certain viral gene products and/or cis-elements that have coevolved in the same strain.

Biological Transport↗
PubMed1995

Sequence comparison and classification of beet luteovirus isolates.

Three distinct sequence groups were found among partial nucleotide sequences of 38 isolates of beet western yellows virus (BWYV) and beet mild yellowing virus (BMYV) from Europe, Iran and the USA. The first group contains both sugar beet and oilseed rape specific isolates, and the differentiating characteristic linked to this host range specificity are 2 single base pair changes in a 1,200 nucleotide region of the genome. It is proposed that the European BWYV strains that can be transferred at low frequency between rape and sugar beet belong to this group. Also belonging to this group are the published BWYV sequences of Veidt et al. and of the California BWYV-ST9 isolate. The second group contains mostly rape-derived isolates which have an intergenic region highly distinct from that of group-1 isolates but similar polymerase and coat protein regions. It is proposed that the rape-specific BWYV isolates which cannot be transmitted to sugar beet belong to this group. The third group contains mostly beet-specific isolates from Southern Europe and Iran, and may be adapted to the Mediterranean climate and flora. It is distinct from groups 1 and 2 in all three genome regions investigated and its polymerase and intergenic regions are as much related to those of potato leafroll virus (PLRV) and curcurbit aphid borne yellows virus (CABYV) as they are to those of group-1 and group-2. On the basis of sequence similarities and established nomenclature it is proposed to use BWYV for groups 1 and 2 (BWYV-1 and BWYV-2 respectively) and to use BMYV for group-3 isolates, which are distinct enough from the other two groups to merit a separate nomenclature.

Amino Acid Sequence↗
PubMed1991

Nitrate-nitrite levels in commercially processed and home processed beets and spinach.

Nitrate and nitrite content of commercially processed and home processed beets and spinach samples were analyzed using specific ion electrode and colorimetric methods. The home processed beets were found to be significantly higher in nitrate content than the commercially processed beets. This difference was attributed to differences in processing methods. Pickled and Harvard beets contained significantly lower amounts of nitrate/nitrite on a dry weight basis than the other types of processed beets, evidently due to the diluting effect of added sucrose. Home frozen spinach showed a trend toward lower nitrate content than commercially frozen spinach, although the difference was not significant. Length of storage of home processed beets and spinach did not appear to affect nitrate or nitrite content.

Colorimetry↗
PubMed2002

Crop-weed interactions in the Beta vulgaris complex at a local scale: allelic diversity and gene flow within sugar beet fields.

Crop-wild hybrids and weed beets are the main source of agronomic concern for sugar beet production all over Europe. In order to understand the dynamics of crop-wild interactions and the evolution of weediness in Beta vulgaris, we investigated genetic features of bolting individuals occurring at a local scale, i.e. within two sugar beet fields of the French northern area of sugar beet production. By analysing ploidy level, mitochondrial DNA and microsatellite polymorphism, the genetic diversity and the genetic relationships among three different classes of individuals (variety, in-row and out-row weed-beets) from a given field were examined. Such genetic analyses provide a unique opportunity to obtain evidence for the weeds origin and the evolutionary hypotheses previously stated. All the individuals shared in common the Svulg mitochondrial haplotype, and thus a common maternal origin. Conversely, the large genetic diversity at microsatellite loci highlighted the large diversity of the pollinator plants (cultivated and wild plants) during the-seed production process, as well as during the further evolution of weed beets in the sugar production area.

Journal Article↗
PubMed1989

Bioavailability of oxalic acid from spinach, sugar beet fibre and a solution of sodium oxalate consumed by female volunteers.

Oxalate bioavailability from sugar beet fibre (40 g), spinach (25 g) and a solution of sodium oxalate (182 mg) was tested in nine women using a triplicated 3 x 3 Latin square arrangement. Each test substance provided 120 mg oxalic acid. Throughout the study the volunteers consumed a control diet and the test substances were administered at breakfast on specified days. After an initial 2-day control period, oxalate was administered in three test periods that consisted of one test day followed by one control day. Urine collected during 24-hr periods was analysed daily for oxalate. Oxalate excretion did not differ among the five control days and was not increased significantly following the ingestion of sugar beet fibre by the volunteers. Oxalate excretion was greater (P less than 0.0001) for the mean of the spinach and sodium oxalate solution diets than for the mean of the sugar beet fibre and control diets. Oxalate bioavailability from sugar beet fibre was 0.7% compared with bioavailabilities of 4.5 and 6.2% for spinach and oxalate solutions, respectively. The low bioavailability of oxalate from sugar beet fibre may be attributable to its high ratio of minerals (calcium and magnesium) to oxalate, its complex fibre matrix or the loss of the soluble oxalate during processing of sugar beets.

Administration, Oral↗
PubMed2000

Improved detection and differentiation of poleroviruses infecting beet or rape by multiplex RT-PCR.

Three distinct species of virus inducing yellowing of beet, Beet mild yellowing virus (BMYV), Brassica yellows virus (BrYV, synonym BWYV) and Beet chlorosis virus (BChV) have been characterised from the genus Polerovirus. Until recently, no available tools were available to allow accurate and reliable distinction of the three species. Based on previous nucleotide sequence alignments and phylogenetic studies, we show that the use of molecular methods enabled the discrimination of these three beet Polerovirus species, but with differences in efficiency and specificity. Primers CP+ and CP- encompassing ORF-3, which encodes the coat protein, allowed the amplification by RT-PCR of a fragment of 563 bp for all isolates. Molecular methods such as SSCP or RFLP were able to discriminate these fragments by utilizing the differences in sequence. However, SSCP is a highly sensitive technique and was not suitable for the distinction of the Polerovirus species, because all isolates tested displayed a unique pattern. Analysis of the ORF3 RT-PCR products, digested with SmaI, RsaI and AccI restriction enzymes revealed four distinct patterns specific for the three species. However, point mutations can alter the RFLP patterns, making the interpretation of the results difficult. Primers were designed to amplify specifically sequences corresponding to ORF-0 of the three viral species. By using the three new sets of ORF-0 specific primers and CP+/CP- primers in a single multiplex RT-PCR, the detection and discrimination of the three beet Polerovirus species was possible in infected plants. The multiplex RT-PCR method provides a reliable and highly sensitive method to detect and identify viral species and will be of great interest for epidemiological studies of beet poleroviruses.

Brassica↗
PubMed1993

Effects of increasing levels of sugar-beet pulp in broiler chicken diets on nutrient digestion and serum lipids.

Broiler chickens were fed on a control diet based on maize or on diets including conventionally-dried (standard pulp) or vacuum-dried (Fipec pulp) sugar-beet pulp at inclusion levels of 23, 46 and 92 g/kg. Diets were fed ad lib. except for half of the chickens fed on the control diet which were fed twice daily at a restricted level. Although not statistically significant, chickens given the 23 g sugar-beet pulp/kg diets generally consumed more feed, had increased body weights and converted feed more efficiently at both day 14 and 21 than those fed on the control diet or diets including 46 or 92 g sugar-beet pulp/kg. Ileal digestibilities of organic matter, crude fat and crude protein generally decreased with increasing levels of sugar-beet pulp in the diet. Birds fed on diets including sugar-beet pulp had reduced total serum cholesterol concentrations. There were only minor differences obtained in production responses, serum cholesterol concentrations, digestibilities and carcass composition between chickens fed on the two types of beet pulp, indicating that the different drying procedures had very little influence on the product. High triacylglycerol and total serum cholesterol concentrations obtained for the restricted level-fed chickens demonstrated a meal frequency factor.

Animals↗
PubMed1994

Effects of feeding restriction and meal pattern of a sugar beet-containing diet and control diet on nutrient digestibility, plasma lipid concentrations and postprandial triacylglycerol response in broiler chickens.

Broiler chickens were fed on a control diet based on maize or a diet containing sugar-beet-pulp fibre (Beetfiber) at an inclusion level of 46 g/kg. Diets were provided ad lib. or at a restricted level either once daily or three times daily. On days 13 and 20, chickens fed on the ad lib. control and sugar-beet-pulp-containing diets generally weighed more and had poorer feed conversion ratios than chickens given the restricted control and sugar-beet-pulp-containing diets respectively. Furthermore, chickens given the restricted diets once daily had greater body weights and generally improved feed conversion efficiencies compared with chickens given the restricted diets three times daily. Generally, elevated plasma lipid concentrations were observed amongst chickens given the restricted diets once daily compared with chickens fed ad lib. as well as the restricted diets three times daily, while chickens fed on restricted diets three times daily had plasma lipid concentrations intermediate between those fed ad lib. and once daily. In a plasma triacyglycerol response study on day 22, feeding of sugar-beet-pulp-containing diets generally reduced postprandial triacylglycerol concentrations and delayed triacylglycerol response relative to chickens given the control diets either ad lib. or restricted, which may indicate gastrointestinal adaptation to feeding of a fibre-rich diet. Postprandial triacylglycerol concentrations observed for chickens receiving restricted diets were increased compared with chickens given the respective ad lib. diets, indicating adaptation of chickens to reduced feed frequency. On day 25, feeding of sugar-beet-pulp-containing diets decreased digesta dry matter content and ileal organic matter digestibility. Chickens given sugar-beet-pulp-containing diets generally had, on day 25, increased caecal short-chain fatty acid (SCFA) concentrations in comparison with chickens given the ad lib. control diet, indicating increased fermentation of dietary components. It is also noteworthy that the greatest SCFA concentrations were observed amongst chickens given the control diet once daily, suggesting enhanced caecal fermentation capacity. This may have been a consequence of increased bacterial activity and caecal hypertrophy due to infrequent feeding of a low-fibre diet.

Animals↗
PubMedDate not supplied

[Energetic utilization of sugar beets, dried shreds, sucrose and apple pectin by growing swine. 1. Study overview and composition and digestibility of feed and rations].

Total metabolism experiments with a basic ration were carried out over two measuring periods and with a basic ration plus supplements of raw sugar beets, steamed sugar beets, dried sugar beet pulp, sucrose and apple pectin resp. with 4 pigs per test group and 4 test groups (LW 40-135 kg). Live weight gain was approximately equal after the feeding of raw and steamed sugar beets. It amounted to 650 g/animal and day in the first experimental period and to 715 g in the second. After feeding dried sugar beet pulp as supplement the corresponding weight gain was 525 and 565 g/animal and day. In the course of the ontogenetic development up to a live weight of about 70 kg an increase of digestibility could be observed. Adaptation cannot be excluded. This question will be pursued in the following experiments, so that consequences for energetic feed evaluation have to be postponed. For both raw and steamed sugar beets the digestibility of the organic matter was 88%, of NFE 95% and of water soluble carbohydrates 95%.

Animal Feed↗
PubMed1993

The effect of supplementary formalin treated soya-bean meal on feed intake, milk yield and live-weight gain of dairy cows fed ensiled fodder beets.

The present experiment compared formalin treated soya-bean meal (2 kg DM) with barley and urea (2.4 kg DM) as supplements for a mixture of ensiled beets and ammonium-treated straw given ad libitum in a cross over experiment with two periods of 6 weeks. Furthermore, these diets were compared to a traditional diet with fodder beets and ad libitum feeding with grass silage for a period of 12 weeks. The soya-bean meal increased the daily intake of beet-straw silage significantly from 13.1 to 14.1 kg DM (P < 0.01), the yield of milk protein (from 775 to 803 g; P < 0.05) and the live-weight gain (from 138 to 400 g; P < 0.05). Compared to the traditional diet, in which the total energy intake was close to that of the beet-straw silage diets, milk and protein yield (but not milk fat yield) were lower by the beet-straw silage feeding, although not significantly. However, this response seems to be typical and may indicate that not only the amino acid supply of the cows but also the supply of other glucogenic nutrients may be adversely affected when feeding ensiled beets.

Animals↗
PubMed2004

Effect of the red imported fire ant on cotton aphid population density and predation of bollworm and beet armyworm eggs.

The effects of the red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae), on cotton aphid, Aphis gossypii Glover, populations and its predation of bollworm, Helicoverpa zea (Boddie), and beet armyworm, Spodoptera exigua (Hübner), (both Lepidoptera: Noctuidae) eggs were evaluated in cotton under field conditions during 2001 and 2002 in central and northern Texas. In central Texas, cotton aphid populations were approximately 5.5 times greater and predation of sentinel bollworm eggs 2 times greater in the presence of S. invicta versus in its absence, although aphid populations did not reach economic levels. Most predation of beet armyworm egg masses, measured via direct nocturnal observations, was due to S. invicta (68%) and cotton fleahopper, Pseudatomoscelis seriatus (Reuter) (21%), where S. invicta was present, and by the mite Abrolophus sp. (52%), spiders (13%), and minute pirate bug (Orius sp.) (13%) where S. invicta was absent. Predation of sentinel bollworm eggs and beet armyworm egg masses was approximately 1.5 and 4.1 times greater, respectively, in the presence of S. invicta versus in their absence. In the presence of S. invicta, the relative frequencies of minute pirate bug and cotton fleahopper were higher, and of S. invicta and native ants lower in beat bucket samples compared with their relative frequencies in nocturnal observations of predation upon beet armyworm egg masses. In the absence of S. invicta seven of eight predators sampled were similarly represented in beat bucket samples and nocturnal observations of beet armyworm egg mass predation, whereas minute pirate bug occurred at a higher frequency in beat bucket samples relative to nocturnal observations. These observations suggested that the relative frequencies of minute pirate bug, cotton fleahopper, S. invicta and native ants in beat bucket samples do not closely reflect the frequency with which these predators prey on noctuid eggs. Overall, the results of this study show that although S. invicta may promote aphid populations early in the growing season, it is an important predator of bollworm and beet armyworm eggs later in the season.

Animals↗
PubMed1986

The influence of wheat bran and sugar-beet pulp on the digestibility of dietary components in a cereal-based pig diet.

The influence of added wheat bran or dried sugar-beet pulp on the apparent digestion of dietary components was examined in pigs fitted with duodenal and terminal ileal cannulas. The pigs were fed a basal cereal-based diet alone or substituted at a level of 33% by wheat bran or beet pulp. Neither fibrous component influenced the digestibility of starch, but inclusion of beet pulp decreased dry matter content and digestibility of ash, protein and fat in the ileum and fecal digestibility of fat. Between 11 and 37% of the nonstarch polysaccharides were degraded anterior to the ileum, and the percentage of beet pulp diet nonstarch polysaccharides that was soluble increased from 11% in the feed to 35% at the ileum. Xylose and glucose were the least degraded nonstarch polysaccharide residues in all three diets, and the non-starch polysaccharide residues varied in susceptibility to breakdown within and between diets, depending on the composition of the fiber. Almost 50% of the beet pulp, but less than 20% of the wheat bran, was degraded in the large intestine. The inclusion of wheat bran and beet pulp increased fecal output by 127 and 56%, respectively.

Animal Feed↗
PubMed1982

Biosynthesis, translocation, and accumulation of betaine in sugar beet and its progenitors in relation to salinity.

Like other halophytic chenopods, sugar beet (Beta vulgaris L.) can accumulate high betaine levels in shoots and roots. N,N,N-trimethylglycine impedes sucrose crystallization and so lowers beet quality. The objective of this research was to examine the genetic variability and physiological significance of betaine accumulation in sugar beet and its relatives. Three cultivated genotypes of B. vulgaris and two genotypes of the wild progenitor B. maritima L. were grown with and without gradual salinization (final NaCl concentration = 150 millimolar). At 6 weeks old, all five genotypes had moderately high betaine levels in shoots and roots when unsalinized (averages for all genotypes: shoots = 108 micromoles per gram dry weight; roots = 99 micromoles per gram dry weight). Salinization raised betaine levels of shoots and roots 2- to 3-fold, but did not greatly depress shoot or root growth. The genotype WB-167-an annual B. maritima type-always had approximately 40% lower betaine levels in roots than the other four genotypes, although the betaine levels in the shoots were not atypically low.THE SITE AND PATHWAY OF BETAINE SYNTHESIS WERE INVESTIGATED IN YOUNG, SALINIZED SUGAR BEET PLANTS BY: (a) supplying 1 micromole [(14)C]ethanolamine to young leaf blades or to the taproot sink of intact plants; (b) supplying tracer [(14)C]formate to discs of leaf, hypocotyl, and taproot tissues in darkness. Conversion of both (14)C precursors to betaine was active only in leaf tissue. Very little (14)C appeared in the phospholipid phosphatidylcholine before betaine was heavily labeled; this was in marked contrast to the labeling patterns in salinized barley. Phosphorylcholine was a prominent early (14)C metabolite of both [(14)C]ethanolamine and [(14)C]formate in all tissues of sugar beet. Betaine translocation was examined in young plants of sugar beet and WB-167 by applying tracer [methyl-(14)C]betaine to a young expanded leaf and determining the distribution of (14)C after 3 days. In all cases, extensive (14)C translocation to young leaves and taproot sink occurred; neither in the fed leaf nor in sink organs were any (14)C metabolites of betaine detected.

Journal Article↗
PubMed1983

Auxin-induced ethylene production as related to auxin metabolism in leaf discs of tobacco and sugar beet.

Exogenously supplied indole-3-acetic acid (IAA) stimulated ethylene production in tobacco (Nicotiana glauca) leaf discs but not in those of sugar beet (Beta vulgaris L.). The stimulatory effect of IAA in tobacco was relatively small during the first 24 hours of incubation but became greater during the next 24 hours. It was found that leaf discs of these two species metabolized [1-(14)C]IAA quite differently. The rate of decarboxylation in sugar beet discs was much higher than in tobacco. The latter contained much less free IAA but a markedly higher level of IAA conjugates. The major conjugate in the sugar beet extracts was indole-3-acetylaspartic acid, whereas tobacco extracts contained mainly three polar IAA conjugates which were not found in the sugar beet extracts. The accumulation of the unidentified conjugates corresponded with the rise of ethylene production in the tobacco leaf discs. Reapplication of all the extracted IAA conjugates resulted in a great stimulation of ethylene production by tobacco leaf discs which was accompanied by decarboxylation of the IAA conjugates. The results suggest that in tobacco IAA-treated leaf discs the IAA conjugates could stimulate ethylene production by a slow release of free IAA. The inability of the exogenously supplied IAA to stimulate ethylene production in the sugar beet leaf discs was not due to a deficiency of free IAA within the tissue but rather to the lack of responsiveness of this tissue to IAA, probably because of an autoinhibitory mechanism existing in the sugar beet leaf discs.

Journal Article↗
PubMed1998

Cytoplasmic diversity in leaf beet cultivars as revealed by mitochondrial DNA analysis.

Mitochondrial (mt) DNA restriction fragment length polymorphisms are convenient markers for identifying cytoplasmic variation among plant cultivars. In an attempt to detect new cytoplasmic genotypes useful for sugarbeet breeding, we have compared the hybridization patterns of mtDNA from three groups of cultivated beets, viz. leaf beet, garden beet, and fodder beet. Utilized as probes were the two sugarbeet mtDNA clones that were capable of distinguishing normal fertile and different sources of male-sterile cytoplasms from one another. The analysis allowed the identification of four chondriome types among 14 leaf beet cultivars examined. Two out of the four chondriome types were found to be different from the previously described fertile or male-sterile chondriome type. Our results thus indicate that leaf beet cultivars and landraces make up the primary cytoplasmic gene pool of the sugarbeet.

Base Sequence↗
PubMed2005

Beet leafhopper (Hemiptera: Cicadellidae) settling behavior, survival, and reproduction on selected host plants.

Experiments were conducted to determine the settling behavior, survival, and reproduction of the beet leafhopper, Circulifer tenellus (Baker), when maintained on selected host plants. This leafhopper was recently identified in the Columbia Basin of Washington and Oregon as the probable vector of the beet leafhopper-transmitted virescence agent phytoplasma, causal agent of several vegetable crop diseases, including potato purple top. Plants selected for study were sugar beet, Beta vulgaris L.; radish, Raphanus sativus L.; dry bean, Phaseolus vulgaris L.; potato, Solanum tuberosum L.; carrot, Daucus carota L.; and tomato, Lycopersicon esculentum Mill. Leafhopper adults were confined on caged plants, and settling behavior was observed during a 72-h period and survival was monitored for 40 d. Also, oviposition and nymphal production were investigated by maintaining leafhoppers for approximately 90 d on each of the selected plants. Sixty to 100% of leafhoppers settled on all studied plants during the first 5 h, but settling on bean and tomato declined sharply thereafter. Leafhopper mortality was very high on bean and tomato, with 95 and 65% of the leafhoppers, respectively, dying in about a week. In contrast, 77, 90, and 95% of leafhoppers maintained on potato, sugar beet, and radish, respectively, survived until the end of the 40-d experimental period. Beet leafhopper oviposition and nymphal production and development only occurred on sugar beet, radish, and potato; reproduction was lower on potato.

Animals↗
PubMed1994

Effects of concentrated separator dried beet pulp on nutrient digestibility, milk production, and preference of Holstein cattle.

Concentrated separator by-product was fed to cattle to determine TDN, milk production, and feed preference. The TDN content of concentrated separator by-product was determined using a substitution method involving a basal diet of alfalfa and grass hay and a treatment diet of alfalfa and grass hay plus 10% added concentrated separator by-product. Four ruminally cannulated cows in a replicated 2 x 2 Latin square design were used. The estimated TDN content of concentrated separator by-product was 59.3%. Twenty midlactation dairy cows were fed either a control ration containing 20% molasses dried beet pulp or a treatment ration containing 20% concentrated separator by-product dried beet pulp. Cows in the treatment group produced significantly less daily milk and 3.5% FCM than the control group. Percentages of milk fat, protein, lactose, and SNF were not different between treatments. Eight Holstein heifers were used to determine feed preference. Heifers were given a choice among 20% molasses dried beet pulp (control) or 10, 15, or 30% concentrated separator by-product dried beet pulp. Heifers showed no preference between 10 or 15% concentrated separator by-product dried beet pulp and control, but preferred the control over the 30% concentrated separator by-product dried beet pulp.

Animal Feed↗
PubMed2002

Effect of subsoiling on the yield of sugar beet under conditions of rhizomania infection.

The rhizomania is known in Hungary since 1982. The causal agent, Beet necrotic yellow vein benyvirus (BNYVV) is transmitted by a soil-borne fungus Polymyxa betae Keskin. A field experiment was done under rhizomania infested and non-infested conditions to compare the yield parameters of five tolerant and four sensitive sugar beet hybrids. Tolerant varieties produced higher root yield under rhizomania infected conditions. The root yields of the sensitive varieties were similar to the tolerant ones on the uninfested field, but the root mass of some tolerant varieties exceeded the production of the former group. Subsoiling was carried out in two strips of a heavily infested field, while conventional soil cultivation was done on the other parts. There was not any other difference in the cultivation of the treated and control areas. Sugar beet root samples were collected at the time of harvesting from the subsoiled and control plots. Beet necrotic yellow vein virus (BNYVV) infection was tested by means of ELISA. Virus content, yield and yield parameters of samples were compared. There were no significant differences in virus infection between sugar beet roots derived from subsoiled and untreated plots. Ratio of BNYVV infected plants was about 90% in both areas. However, yield and yield parameters showed remarkable difference. Root yield of treated plots, calculated from average individual root weight and 80,000 plant/ha plant density exceeded by 140% the yield of control. Sugar content was 2.6% higher and the harmful non-sugar content was lower on the subsoiled plots. Owing to the favourable chemical and technological value of beet the white sugar content was approximately three-times higher on the treated area.

Agriculture↗