The Experts below are selected from a list of 3705 Experts worldwide ranked by ideXlab platform
David D. Songstad - One of the best experts on this subject based on the ideXlab platform.
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Cryopreservation of Papaver Somniferum Cell Suspension Cultures
Planta medica, 1991Co-Authors: Laurie J. Friesen, Kutty K. Kartha, Nick Leung, Pat Englund, Kenneth L. Giles, Jong Park, David D. SongstadAbstract:The effect of culture age and various cooling rates on the survival and regrowth of cryopreserved cell cultures of Papaver Somniferum L. is described. Survival and regrowth following cryopreservation, in liquid nitrogen, occurred only with 4 and 5 day old cultures. No regrowth was observed in 3 or 6 day old cultures. Cooling rate had a significant effect on survival following cryopreservation with an optimum cooling rate of 0.5 degrees C min (-1).
Brian E. Ellis - One of the best experts on this subject based on the ideXlab platform.
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Alkaloids from Agrobacterium rhizogenes-transformed Papaver Somniferum cultures
Phytochemistry, 1993Co-Authors: Robert D. Williams, Brian E. EllisAbstract:Abstract Cell suspension cultures derived from Agrobacterium rhizogenes-transformed Papaver Somniferum tissue were investigated for growth and alkaloid content. Transformed cultures grown in phytohormone-free medium, and cultures derived from non-transformed tissue, showed little difference in growth. Both transformed and untransformed cell lines accumulated high quantities of benzylisoquinoline alkaloids, of which the major species was sanguinarine. These cell lines also produced a variety of minor alkaloids, including the sanguinarine analogues, oxysanguinarine, norsanguinarine and dihydrosanguinarine, and the protopine-type alkaloids, protopine and cryptopine. Although these transformed suspension cultures were derived from axenic root tissue, a rich source of morphinan alkaloids, there was no evidence of stable production of morphinan alkaloids in the cultures.
Laurie J. Friesen - One of the best experts on this subject based on the ideXlab platform.
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Cryopreservation of Papaver Somniferum Cell Suspension Cultures
Planta medica, 1991Co-Authors: Laurie J. Friesen, Kutty K. Kartha, Nick Leung, Pat Englund, Kenneth L. Giles, Jong Park, David D. SongstadAbstract:The effect of culture age and various cooling rates on the survival and regrowth of cryopreserved cell cultures of Papaver Somniferum L. is described. Survival and regrowth following cryopreservation, in liquid nitrogen, occurred only with 4 and 5 day old cultures. No regrowth was observed in 3 or 6 day old cultures. Cooling rate had a significant effect on survival following cryopreservation with an optimum cooling rate of 0.5 degrees C min (-1).
Meinhart H. Zenk - One of the best experts on this subject based on the ideXlab platform.
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Stereoselective reduction of codeinone, the penultimate enzymic step during morphine biosynthesis in Papaver Somniferum
Tetrahedron Letters, 1995Co-Authors: Rainer Lenz, Meinhart H. ZenkAbstract:Abstract A highly substrate specific enzyme has been discovered and purified to homogeneity both from cell suspension cultures as well as from capsule tissue of Papaver Somniferum which stereoselectively reduces (−)-codeinone to (−)-codeine and morphinone to morphine at the expense of NADPH.
N. Crespi-perellino - One of the best experts on this subject based on the ideXlab platform.
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Glucosylation of silybin by plant cell cultures of Papaver Somniferum var. setigerum
Phytochemistry, 1998Co-Authors: Vladimír Křen, Anacleto Minghetti, Petr Sedmera, Vladimír Havlíček, Véra Přikrylová, N. Crespi-perellinoAbstract:Abstract Cell cultures of Papaver Somniferum var. setigerum were shown to carry out the biotransformation of silybin into silybin -7-O-β- d -glucopyranoside .
