Uptake and Metabolism of 2,2-bis-(p-Chlorophenyl-1,1,1-trichloroethane (DDT) by Marine Phytoplankton and Its Effects on Growth and Chloroplast Electron Transport

Abstract

The effects of DDT (2,2-bis-(p-chlorophenyl)-1, 1, 1-trichloroethane) on to develop a reasonable picture of its distribution in marine air, water, biota, or sediment. Present evidence shows DDT residues being found in widely separated geographical areas and in many levels of food chains, their concentrations increasing in the higher levels (8,16,18,19,25,26 The medium used to culture the phytoplankton was similar in composition to one described by Carlucci and Bowes (7).All species were bacteria-free. Sterility tests were made periodically by introduction of a small inoculum of the culture into peptone-enriched medium. Cultures were also checked for purity by phase microscopy.All glassware used in the experiment was rinsed with redistilled hexane and checked for the presence of DDT and related compounds.Culture vessels were 250-ml Erlenmeyer flasks. Each contained 150 ml of mediulm. The flasks were plugged with cotton 172 www.plantphysiol.org on May 11, 2018 -Published by Downloaded from

Accumulation, metabolism, and effects of organochlorine insecticides on microorganisms.

“…The most common product of DDT metabolism in algae is DDE (in contrast with DDD, which is the major metabolic product of DDT in bacteria). Another difference is the low ability of algae to metabolize DDT, for the amounts of DDE produced from DDT ranged from 3 to 10% (26). In addition to DDE, trace levels of polar metabolites in S. costatum (202) and DDD in A. amalloides (178) have also been reported.…”

Accumulation, degradation and biological effects of lindane on Scenedesmus obliquus (Turp.) Kütz

“…The main unicellular algae from the pond were collected, and experiments were conducted for algae growth, pigment content, pigment absorption spectrum and animo acid content, in order to study accumulation and degradation of lindane by the algae as theoretical basis for a proper engineering treatment (Huanag & Glogna, 1968;Bores, 1972). The main unicellular algae from the pond were collected, and experiments were conducted for algae growth, pigment content, pigment absorption spectrum and animo acid content, in order to study accumulation and degradation of lindane by the algae as theoretical basis for a proper engineering treatment (Huanag & Glogna, 1968;Bores, 1972).…”

Artspezifische Wachstumsreaktionen einiger Grünalgen auf einen kombinierten DDT‐Starklicht‐Salzstreß

“…Schon bei Algen berichtet VERSINO (1971) von einer 10 6 -fachen Anreicherung gegenüber dem Außenmedium. Eine algizide Wir kung von DDT konnte vor allem bei marinen Algen festgesellt werden (UKE- LES 1962, WURSTER 1968, MENZEL et al 1970, BOWES und GEE 1971, BOWES 1972, MOSSER et al 1972, FISHER 1975. Vergleichbare Resultate wurden bei Algen des Süßwassers nicht gefunden.…”