Regulation of Chlorophyll Synthesis in the Green Alga Golenkinia

Autor:	Ted Spooner, Richard J. Ellis, Robert Yakulis
Rok vydání:	1975
Předmět:	Growth medium biology Physiology Cell chemistry.chemical_element Articles Plant Science biology.organism_classification Nitrogen chemistry.chemical_compound medicine.anatomical_structure chemistry Algae Biochemistry Golenkinia Chlorophyll Darkness Glycine Genetics medicine
Zdroj:	Plant Physiology. 55:791-795
ISSN:	1532-2548 0032-0889
DOI:	10.1104/pp.55.4.791
Popis:	Chlorophyll synthesis in Golenkinia is inhibited 10-fold by growth in darkness on acetate or by growth on elevated concentrations of acetate in the light, particularly if the growth medium contains low levels of nitrogen. Glucose has no such inhibitory effect. delta-Aminolevulinic acid, with a maximal effect at 0.01 m, but not its precursors, overrides the inhibitory effect of acetate and darkness, restoring chlorophyll synthesis. Glycine, succinate, and alpha-ketoglutarate, the precursors tested, all enter the cell. Cells forming chlorophyll produce significantly more aminolevulinic acid than do cells becoming bleached, further indicating the important regulatory role of this compound. Cyclic AMP has no effect on chlorophyll synthesis. These results are compared with those obtained studying other algae, and a mechanism relating light and acetate to chlorophyll formation is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d9fa947e1e7702acc50f11d67ff1391 https://doi.org/10.1104/pp.55.4.791 Zobrazit plný text záznamu