Toward Disentangling the Multiple Nutritional Constraints Imposed by <i>Planktothrix</i>: The Significance of Harmful Secondary Metabolites and Sterol Limitation.

ABSTRACT: The harmful bloom-forming cyanobacterium Planktothrix is commonly considered to be nutritionally inadequate for zooplankton grazers, resulting in limited top-down control. However, interactions between Planktothrix and zooplankton grazers are poorly understood. The food quality of Planktothrix is potentially constrained by morphological properties (i.e., filament formation), the production of harmful secondary metabolites, and a deficiency in essential lipids (i.e., primarily sterols). Here, we investigated the relative significance of toxin production (microcystins, carboxypeptidase A inhibitors, protease inhibitors) and sterol limitation for the performance of Daphnia feeding on one Planktothrix rubescens and one P. agardhii wild-type/microcystin

SUBMITTER: Schwarzenberger A 

PROVIDER: S-EPMC7609654 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature