Issue |
Ann. Limnol. - Int. J. Lim.
Volume 30, Number 4, December 1994
|
|
---|---|---|
Page(s) | 313 - 321 | |
DOI | https://doi.org/10.1051/limn/1994023 | |
Published online | 15 April 2009 |
Stockage intracellulaire des nutriments chez l'algue verte Chlorella sorokiniana Shihira & Krauss
Intracellular storage of nutrients for the green algae Chlorella sorokiniana Shihira & Krauss
1
Laboratoire de Physiologie Végétale, Faculté des Sciences Semlalia, Avenue du Prince Moulay Abdellah, BP S15, Marrakech, Maroc
2
Laboratoire d'Hydrobiologie, Université Paul-Sabatier, URA CNRS 695, 118, route de Narbonne, 31062 Toulouse Cedex, France
Les réserves intracellulaires en azote et en phosphore ont été déterminées chez Chlorella sorokiniana. Les quotas cellulaires maximal et minimal pour les deux nutriments sont respectivement de 67,9 et 19,9 µg at. 10-9 cellules pour l'azote et de 5,19 et 0,51 µg at. 10-9 cellules pour le phosphore. Les carences azotée et phosphorée s'accompagnent d'une réduction importante (de 44 % à 83 %) des teneurs en chlorophylle des cellules.
Abstract
Intracellular reserves of nitrogen and phosphorus have been determined for the green algae Chlorella sorokiniana. The maximum and minimum quotas for the two nutrients were respectively 67,9 and 19,9 µg at. 10-9 cells for nitrogen and 5,19 and 0,51 µg at. 10-9 cells for phosphorus. The lack of nitrogen and phosphorus in the medium led to a marked reduction (44 % to 83 %) of the cellular pool of chlorophyll.
Mots clés : chlorella sorokiniana / quotas cellulaires / azote / phosphore / chlorophylle
Key words: chlorella sorokiniana / cellular quotas / nitrogen / phosphorus / chlorophyll
© Gauthier-Villars, 1994
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