Isolation and characterization of a DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) resistant strain of a marine alga, Dunaliella bioculata

Autor: D. Grizeau, R. Calvayrac, N. Jeanne
Rok vydání: 1985
Předmět:
Zdroj: Physiologia Plantarum. 65:189-195
ISSN: 1399-3054
0031-9317
DOI: 10.1111/j.1399-3054.1985.tb02381.x
Popis: A DCMU-resistant strain was isolated from cell cultures of a wall-less alga, Dunaliella bioculata (Butcher 19/4 CCAP). This variant strain is essentially characterized by its ability of grow autotrophically in the presence of 4 μM DCMU and by the stability of this property even after numerous subcultures in the absence of the herbicide. Chloroplastic structures and photosynthetic activities of whole and fragmented cells of the wild and the variant strains were compared for their respective sensitivities towards DCMU. The DCMU-resistant strain was also insensitive to other photosynthetic inhibitors such as chloroxuron, but not to atrazine. The results suggest that the DCMU-resistance could be due to some modified plastid property.
Databáze: OpenAIRE