Search Results - (Author, Cooperation:E. L. Rice)
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1Latest Papers from Table of Contents or Articles in PressB. Macintosh ; J. R. Graham ; T. Barman ; R. J. De Rosa ; Q. Konopacky ; M. S. Marley ; C. Marois ; E. L. Nielsen ; L. Pueyo ; A. Rajan ; J. Rameau ; D. Saumon ; J. J. Wang ; J. Patience ; M. Ammons ; P. Arriaga ; E. Artigau ; S. Beckwith ; J. Brewster ; S. Bruzzone ; J. Bulger ; B. Burningham ; A. S. Burrows ; C. Chen ; E. Chiang ; J. K. Chilcote ; R. I. Dawson ; R. Dong ; R. Doyon ; Z. H. Draper ; G. Duchene ; T. M. Esposito ; D. Fabrycky ; M. P. Fitzgerald ; K. B. Follette ; J. J. Fortney ; B. Gerard ; S. Goodsell ; A. Z. Greenbaum ; P. Hibon ; S. Hinkley ; T. H. Cotten ; L. W. Hung ; P. Ingraham ; M. Johnson-Groh ; P. Kalas ; D. Lafreniere ; J. E. Larkin ; J. Lee ; M. Line ; D. Long ; J. Maire ; F. Marchis ; B. C. Matthews ; C. E. Max ; S. Metchev ; M. A. Millar-Blanchaer ; T. Mittal ; C. V. Morley ; K. M. Morzinski ; R. Murray-Clay ; R. Oppenheimer ; D. W. Palmer ; R. Patel ; M. D. Perrin ; L. A. Poyneer ; R. R. Rafikov ; F. T. Rantakyro ; E. L. Rice ; P. Rojo ; A. R. Rudy ; J. B. Ruffio ; M. T. Ruiz ; N. Sadakuni ; L. Saddlemyer ; M. Salama ; D. Savransky ; A. C. Schneider ; A. Sivaramakrishnan ; I. Song ; R. Soummer ; S. Thomas ; G. Vasisht ; J. K. Wallace ; K. Ward-Duong ; S. J. Wiktorowicz ; S. G. Wolff ; B. Zuckerman
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-08-15Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Articles: DFG German National LicensesKoeppe, D. E. ; Rohrbaugh, L. M. ; Rice, E. L. ; Wender, S. H.
Oxford, UK : Blackwell Publishing Ltd
Published 1970Staff ViewISSN: 1399-3054Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: Through the use of paper chromatographic separation, and fluorometric and spectrophotometric analysis, three caffeoylquinic acid isomers and scopolin have been quantilaed in tobacco as a function of age and chilling temperature. Coldchilled plants exhibited nitrate deficiency symptoms and 4-5 fold increases over control plants in chlorogenic acid (CGA) concentration in all plant sections except the roots. Varying lesser increases in neochlorogenic acid, “Band 510”, and scopolin concentration were also observed in the above ground sections of chilled plants. Roots of cold-chilled plants contained lesser concentrations of CGA and scopolin than control plants after 15 days of treatment. Leaves from the same control plant were found to decrease in CGA, Band 510 and scopolin concentration with age, while neochlorogenic acid concentrations changed little. In stem sections CGA concentration also decreased basipetally while the concentrations of scopolin increased. Similar leaf age studies done with cold-chilled plants revealed phenolic concentration changes comparable to those of control plants, even though their concentrations were appreciably higher.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesLi, H. C. ; Rice, E. L. ; Rohrbaugh, L. M. ; Wender, S. H.
Oxford, UK : Blackwell Publishing Ltd
Published 1970Staff ViewISSN: 1399-3054Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: A significant depression of callus growth resulted from low concentrations of abscisic acid (ABA) added to the medium recommended by Linsmaier and Skoog. Low concentrations also decreased the chlorogenic acid and lignin content of the callus, and generally decreased amounts of scopolin and scopoletin in the tissue. Gibberellic acid (GA3) stimulated callus growth in a low concentration (0.1 mg/1) and inhibited growth at a high concentration (10.0 mg/1). Both levels of GA3 increased scopoletin accumulation in tobacco callus. A high concentration of GA3 increased the accumulation of scopolin and chlorogenic acids, whereas a low concentration decreased the amounts of these two phenolic compounds. In comparison with the control, lignin synthesis was stimulated by a low GA3 concentration, but a high GA3 concentration did not have a significant effect. Both low and high concentrations of GA3 overcame ABA inhibition of growth and lignin synthesis, and partially reversed ABA inhibition of scopoletin production. However, GA3 did not reverse the inhibitory effect of ABA on scopolin production. The low concentration of GA3 overcame the inhibition of chlorogenic acid production resulting from a 0.01 mg/1 concentration of ABA, but this was the only reversal of chlorogenic acid inhibition resulting from addition of GA3 to the medium.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-1793Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The intraspecific patterns of morphometric variation were examined in Fucus distichus L. and F. evanescens C.Ag., using samples gathered from 49 sites spread across the North Atlantic. Ten characters were measured on each plant. The data were subjected to bivariate regression analyses, canonical correlation analysis and nested analysis of variance (ANOVA). It was shown that the combined effects of the three environmental variables measured for each site (latitude, longitude and exposure) could only explain 23 and 15% respectively of the intraspecific morphometric variation. Inter-individual, within-site differences accounted for a further 62 and 53%. The remaining variation appears to be expressed on a geographic scale of tens of kilometres at most. Thus, the species seem to take the form of fine-scale phenotypic mosaics, superimposed on weak major clines. Such a pattern has not previously been described for any macroalga, although it is known in some angiosperms.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1432-1793Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Productivities of two cohorts of Chordaria flagelliformis (O. F. Müll.) C. Ag. were estimated from measured changes in biomass and survivorship over time. Maximum productivity during the summer growing season was 2.6 g C m-2 d-1. Although this figure is relatively high, the short growing season results in an annual production of only 89 g C m-2. The significance of primary production by C. flagelliformis lies in its seasonal timing. During the summer growth period, 50% of production was recycled directly by detrital material. During the same time period, productivity and biomass losses of other seaweeds are at their lowest.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1432-1939Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary The ratio of nitrate/ammonium in the soil decreases from a high level in the early stages of old field succession to a low level in the climax in the tall grass prairie region of central Oklahoma. Characteristic plant species from different stages of succession were grown in culture solutions where the total nitrogen content was held constant, but the form varied from nitrate only to ammonium only. The nitrate reductase activity of leaves and roots was measured in vivo. The results indicates that four pioneer species had relatively high levels of enzyme activity while four climax species had relatively low levels. Nitrate reductase activity was consistently higher in either the leaves or the roots of a species than in the other organ regardless of the nitrogen treatment. Enzyme activity generally decreased with decreasing nitrate concentrations, but seven cases were found where there were no significant differences in enzyme activity between any of the nitrogen treatments. All eight species had their highest shoot dry weights on the ammonium only treatment.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1573-5176Keywords: Gracilaria ; taxonomy ; organellar DNA restriction ; anatomy ; chromosome number ; interfertilitySource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Gracilaria chilensis Bird, McLachlanet Oliveira from Chile andG. sordida Nelson from New Zealand have been compared with respect to reproductive anatomy, chromosome number, interfertility, and organellar DNA restriction profiles. No differences were found in reproductive anatomy, which in these species is distinguished by deeptextorii-type spermatangial conceptacles and prominent tubular nutritive cells directed only to the floor of the cystocarp. The species share a chromosome number ofn = 24 and are readily interfertile. Electrophoretic profiles of organellar DNA digested with four different restriction endonucleases were virtually identical between the species except for bands that represented accompanying plasmids. However, previous research has indicated that the four plasmid bands inG. chilensis and the single one inG. sordida have a common origin. On these groundsG. chilensis andG. sordida areType of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1573-5176Keywords: Ahnfeltia ; Chondrus ; Furcellaria ; Palmaria ; rRNA sequenceSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract 18S rRNA gene sequences are presented forAhnfeltia plicata, Chondrus crispus, Furcellaria lumbricalis andPalmaria palmata, commercially important marine algae of the North Atlantic. The sequences range from 1765 to 1777 nucleotides in length, with guanine + cytosine content of 50.1% to 52.4%. Sequence divergence between species in different orders was 11.3–12.3%, whereas the variation betweenC. crispus andF. lumbricalis, both from the Gigartinales, was only 3.6%. Based on limited experience with other groups of Rhodophyta, these sequences obtained from single populations are likely to be representative of the species as a whole, with little variation expected among conspecifics regardless of morphological aberration or apparent genetic isolation.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1573-5117Keywords: seaweed ; Gracilariaceae ; taxonomy ; plastid DNA restriction ; chromosomes ; hybridization ; anatomySource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Recognition of species in the Gracilariaceae, often notoriously difficult, is being aided by a combination of classical and modern techniques. We review some recent findings and present new results that may lead to redefinition of Gracilaria verrucosa, the type species of its genus. Plastid DNA restriction profiles (patterns of banding obtained by electrophoresis of DNA after restriction endonuclease digestion) from eleven strains ascribed to G. verrucosa indicated that the concept of this species in northern Europe includes possibly three taxa, one of which is known now to be a species of Gracilariopsis. In contrast, restriction profiles from Argentinian and Japanese strains were closely similar to the predominant pattern for European G. verrucosa. Profiles of several other strains, from the western Atlantic and eastern Pacific, were dissimilar to the European group and to each other. A chromosome number of n = 24 was determined for a representative of the predominant European group, and preliminary results of hybridization trials suggest that these strains, and others with approximately the same plastid DNA restriction pattern, are interfertile.Type of Medium: Electronic ResourceURL: