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Properties and genetic control of four methyltransferases involved in methylation of anthocyanins in flowers of Petunia hybrida (1984)

Jonsson, L. M. V. ; Aarsman, M. E. G. ; Poulton, J. E. ; [et al.]

Springer

Planta 160 (1984), S. 174-179

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ISSN: 1432-2048

Keywords: Anthocyanin biosynthesis ; Anthocyanin-3′,5′-methyltransferase ; Petunia (anthocyanin)

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract Four S-adenosyl-l-methionine:anthocyanin-3′,5′-O-methyltransferases in flowers of Petunia hybrida were separated using the chromatofocusing technique. Each methyltransferase is controlled by one of the methylation genes Mt1, Mt2, Mf1 or Mf2. Molecular weight, pH-activity optimum, isoelectric point, several kinetic properties and the behaviour in the presence of Mg2+, ethylenediaminetetraacetic acid and S-adenosyl-l-homocysteine of each of the four enzymes were determined. The methylation in vitro of delphinidin 3-(p-coumaroyl)-rutinosido-5-glucoside reflected the accumulation patterns of methylated anthocyanins in vivo and established the regulatory role of methyltransferases in vivo.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00392867

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Corynebacterial infection of cattle in Kenya (1982)

Kariuki, D. P. ; Poulton, J.

Springer

Tropical animal health and production 14 (1982), S. 33-36

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ISSN: 1573-7438

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Description / Table of Contents: Résumé Des infections cutanées du bétail causées parCorynebacterium ovis, soit en tant que germe pathogène dominant soit en association avec d'autres organismes ont eté constatées dans un ranch du Kenya. Le taux de morbidité a été de 25 p.100 environ pour plus de 3 000 animaux, et cette maladie est apparue extrêmement infectieuse. Trois traitements ont été institués, le plus satisfaisant consistant dans la ponction des abcès les plus importants et leur lavage par irrigation avec une solution iodée.

Abstract: Resumen Se investigaron en un rancho de Kenia, infecciones de la piel causadas porCorynebacterium ovis como principal patógeo o en asociación con otros organismos. La tasa de morbilidad fué de aproximadamente 25% siendo la condición altamente contagiosa. Se instituyeron tres tratamientos siendo el más efectivo la ruptura de los abscesos y su irrigación con una solución yódica.

Notes: Summary Skin infections in cattle caused by Corynebacterium ovis, either as the main pathogen or in association with other organisms, was investigated on a Kenya ranch. The morbidity rate was approximately 25% involving more than 3,000 cattle and the condition appeared to be highly infectious. Three treatment regimes were instituted and the most effective proved to be lancing and irrigating the large abscesses with iodine solution.