نتایج جستجو برای: chlorophyceae

تعداد نتایج: 473  

2004
Tessa Pocock Marc-André Lachance Thomas Pröschold John C. Priscu Sam Sulgi Kim Norman P. A. Huner

An unusual psychrophilic green alga was isolated from the deepest portion of the photic zone (o0.1% of incident PAR) at a depth of 17m in the permanently ice-covered lake, Lake Bonney, Antarctica. Here we identify and report the first detailed morphological and molecular examination of this Antarctic green alga, which we refer to as strain UWO 241. To determine the taxonomic identity, UWO 241 w...

Journal: :Bulletin of environmental contamination and toxicology 1995
J Abalde A Cid S Reiriz E Torres C Herrero

Heavy metals are introduced into aquatic ecosystems from industrial wastes, agricultural runoff and mining activities. The toxicity of heavy metal ions in solution to microalgae is well known. The essentiality and toxicity of heavy metals has been a subject of extensive research (Stokes 1983). From a biological point of view, heavy metals can be divided into two categories: essential and non-es...

2016
Catherine E Seed Joseph L Tomkins

Induction of sexual reproduction in the facultatively sexual Chlamydomonas reinhardtii is cued by depletion of nitrogen. We explore the capacity for indirect monitoring of population variation in the gametogenic process using flow cytometry. We describe a high-throughput method capable of identifying fluorescence, ploidy and scatter profiles that track vegetative cells entering and undergoing g...

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