Search Results - (Author, Cooperation:C. Nagai)
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1Latest Papers from Table of Contents or Articles in PressF. Denoeud ; L. Carretero-Paulet ; A. Dereeper ; G. Droc ; R. Guyot ; M. Pietrella ; C. Zheng ; A. Alberti ; F. Anthony ; G. Aprea ; J. M. Aury ; P. Bento ; M. Bernard ; S. Bocs ; C. Campa ; A. Cenci ; M. C. Combes ; D. Crouzillat ; C. Da Silva ; L. Daddiego ; F. De Bellis ; S. Dussert ; O. Garsmeur ; T. Gayraud ; V. Guignon ; K. Jahn ; V. Jamilloux ; T. Joet ; K. Labadie ; T. Lan ; J. Leclercq ; M. Lepelley ; T. Leroy ; L. T. Li ; P. Librado ; L. Lopez ; A. Munoz ; B. Noel ; A. Pallavicini ; G. Perrotta ; V. Poncet ; D. Pot ; Priyono ; M. Rigoreau ; M. Rouard ; J. Rozas ; C. Tranchant-Dubreuil ; R. VanBuren ; Q. Zhang ; A. C. Andrade ; X. Argout ; B. Bertrand ; A. de Kochko ; G. Graziosi ; R. J. Henry ; Jayarama ; R. Ming ; C. Nagai ; S. Rounsley ; D. Sankoff ; G. Giuliano ; V. A. Albert ; P. Wincker ; P. Lashermes
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-09-06Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Caffeine/biosynthesis/*genetics ; Coffea/classification/*genetics ; *Evolution, Molecular ; *Genome, Plant ; Methyltransferases/genetics/*physiology ; Phylogeny ; Plant Proteins/genetics/*physiologyPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 1572-8838Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyElectrical Engineering, Measurement and Control TechnologyNotes: Abstract During the electro-initiated polymerization of acrylamide by utilizing Kolbe's electrolysis as a source of free radicals in an aqueous solution of acetic acid and potassium acetate, only an oligomer with a molecular weight of 4000–6000 was obtained. However, by the addition of ferric ion, a high-polymer with a molecular weight of a few millions was obtained. The effective action of ferric ions was retarded by the presence of ferrous ion and a large amount of chloride ion. The optimum amount of ferric ion for the formation of high-polymer and the effects and roles of various ions on the process of polymerization are discussed.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 1432-1459Source: Springer Online Journal Archives 1860-2000Topics: MedicineType of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1573-5060Keywords: intergeneric hybrid ; genetic variance ; sugarcane ; chromosome number ; isozymeSource: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Summary Somaclonal variation from a partially sterile intergeneric hybrid was obtained for sugarcane improvement and for understanding phylogeny. Over 1,000 somaclones were regenerated from callus cultures of intergeneric hybrid clone H83-9998 (2n = ca. 94) involving H62-4671 (Saccharum spp. hybrid, 2n = ca. 115) x 28NG7 (Erianthus arundinaceum, 2n = 60) as parents. One hundred twenty-six somaclones were selected on the basis of observed morphological variation and planted in large plots with the original hybrid and its parental clones for detailed studies. Data were collected for stalk (number, length, diameter), leaf (length, width) and sucrose characters. Obvious variations in dewlap shape, leaf and stalk colors, leaf angle, rhizome habit, and pollen fertility, as well as date of flowering, were recorded. Chromosome and isozyme analyses were conducted to confirm that the observed phenotypic variation among somaclones had a genetic basis. Chromosome numbers of somaclones selected on the basis of phenotypic variation ranged from 2n = 66 to 2n = 109. With isozyme analysis, 1 to 4 band variations in three systems (peroxidase, phosphoglucomutase, and phosphoglucoisomerase) were found. Significant genetic variance estimates (σG2/σP2) and genetic CVs (6.7–25.6%) indicate that the differences observed among somaclonal variants would likely remain stable in additional asexually propagated cycles. Yield was estimated from stalk volume x refractometer solids, and 9 out of 126 somaclones produced higher estimates yield than the hybrid. One somaclone showed estimated yield that was not significantly different from the Saccharum parent.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1573-5060Keywords: Saccharum spp. ; sugarcane ; aneuploidy ; plant variation ; somaclones ; colchicineSource: Springer Online Journal Archives 1860-2000Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Summary Sugarcane (Saccharum spp.) clones are amenable to gross chromosome manipulation due to their high polyploid nature (2n=100–120). This study was conducted to analyze the effects on plant morphology of altering chomosome number via callus culture. Callus cultures from clone H69-9092 were established, and plants were regenerated following colchicine treatment of cultured cells. Cytological analysis showed that variant somaclones were aneuploids with a wide range in chromosome numbers (2n=66–196). Some 22 visually distinct somaclones were planted in 1.35 m2 plots with five replications to compare morphological and quality characteristics with H69-9092 at 8 months of growth. Extreme morphological variation was observed between somaclones, but coefficients of variation for quality factors-fibers %, refractometer solids %, pol %, and juice purity-and stomatal length were smaller than those for morphological traits associated with stalk volume and leaf area. Significant negative correlations were found between chromosome number and most morphological traits, e.g., stalk length (r=-0.58), number (r=-0.69), diameter (r=-0.54) and volume (r=-0.65); internode length (r=-0.57); and leaf area (r=-0.48). A positive correlation was found between chromosome number and stomatal length (r=-0.66). No significant correlations were found between chromosome number and quality factors. Aneuploids with higher than parental chromosome number had reduced growth. However, depression in growth was generally not observed in somaclones lower in chromosome number than the parent.Type of Medium: Electronic ResourceURL: