Die Bestimmung kleinster Mengen von Alkoholen in sehr verd�nnten w��rigen L�sungen

Wacek, A.; Zeisler, F.

doi:10.1007/bf01220648

Cited by 4 publications

(2 citation statements)

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“…Studies of lignin deposition in tissue cultures have for the most part been oriented towards elucidating the biochemistry of lignin synthesis. For example, von Wacek and others (5)(6)(7) have demonstrated that the addition of certain lignin precursors, such as coniferyl alcohol, to the media upon which tissue cultures are grown, brings about an increase in the amount of lignin deposited on cell walls. Other investigators (8)(9)(10)(11)(12) have demonstrated a similar action of eugenol, cinnamic acid, and its derivatives, on the lignification of isolated plant organs.…”

Section: Introductionmentioning

confidence: 99%

Ionic Effects on Lignification and Peroxidase in Tissue Cultures

Lipetz

Garro

1965

The Journal of Cell Biology

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Crown-gall tumor tissue cultures release peroxidase into the medium in response to the concentration of specific ions in the medium. This release is not due to diffusion from cut surfaces or injured cells. Calcium, magnesium, and ammonium were, in that order, most effective in increasing peroxidase release. The enzyme was demonstrated cytochemically on the cell walls and in the cytoplasm. Cell wall fractions, exhaustively washed in buffer, still contained bound peroxidase. This bound peroxidase could be released by treating the wall fractions with certain divalent cations or ammonium. The order of effectiveness for removing the enzyme from the washed cell walls is: Ca++ M Sr++ > Ba++ > Mg++ > NH 4 +. These data support the thesis presented that specific ions can control the deposition of lignin on cell walls by affecting the peroxidase levels on these walls.

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Section: Introductionmentioning

confidence: 99%

Ionic Effects on Lignification and Peroxidase in Tissue Cultures

Lipetz

Garro

1965

The Journal of Cell Biology

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“…To do this, however, methanol must be determined precisely in very dilute aqueous solutions. A suitable analytical method, worked out by Fisher and Schmidt (77) and substantially refined as to apparatus by Skrabal (72), has been developed in these laboratories into a micromethod (15). Thus, methanol can now be determined, in amounts of 50 to 100 7 with a precision of ±1 7 at concentrations of about 100 p.p.m.…”

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confidence: 99%