Résumé
La formation des amino-acides dans les feuilles deBryophyllum Daigremontianum Berger dépend à la fois de la vitesse de la formation des courtes chaînes carbonées et de celle de la fourniture d'N réduit.
La lumière accélère la genèse des amino-acides qui peuvent dériver des produits initiaux de la photosynthèse (α-alanine, sérine, glycocolle) ainsi que des amino-acides dont les chaînes carbonées proviennent d'une 2e carboxylation (ac. aspartique et β-alanine) ou encore des oxydations cellulaires (ac. glutamique, ac. γ-aminobutyrique).
Summary
The formation of amino-acids in the leaves ofBryophyllum Daigremontianum Berger depends on the speed of the formation of the short carbon chains and on that of the supply of reduced nitrogen.
Light accelerates the genesis of the amino-acids which can derivate from initial products of photosynthesis (alanine, serine, glycine) as well as from amino-acids, the carbon chains of which proceed from a second carboxylation (aspartic acid and alanine) or from cellular oxydations (glutamic acid, aminobutyric acid).
Zusammenfassung
Die Entstehung der Aminosäuren in den Blättern vonBryophyllum Daigremontianum Berger ist gleichzeitig abhängig von der Schnelligkeit der Bildung von kurzen Kohlenstoff-Ketten und von der Schnelligkeit der Zufuhr an reduziertem Stickstoff.
Das Licht beschleunigt das Entstehen der Aminosäuren, die von den Anfangsprodukten der Photosynthese herstammen können (Alanin, Serin, Glykokoll,) sowie von Aminosäuren, deren Kohlenstoff-Ketten aus einer zweiten Carboxylierung (Asparaginsäure und β-Alanin) oder auch von Oxydationen innerhalb der Zellen herkommen (Glutaminsäure, γ-Aminobuttersäure).
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Champigny, M.M.L. Formation des amino-acides au cours de la photosynthèse. Plant Food Hum Nutr 3, 91–98 (1958). https://doi.org/10.1007/BF01884038
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DOI: https://doi.org/10.1007/BF01884038