English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The marine mixotrophic ciliate  Mesodinium rubrum  is known to acquire chloroplasts, mitochondria, nucleomorphs, and nucleus from its cryptophyte prey, particularly from species in the genera,  Geminigera  and  Teleaulax . The sequestered prey nucleus and chloroplasts are considered to support photosynthesis of  M. rubrum . In addition, recent studies have shown enlargement of the retained prey nucleus in starved  M. rubrum  and have inferred that enlargement results from the fusion of ingested prey nuclei. Thus far, however, little is known about the mechanism underlying the enlargement of the prey nucleus in  M. rubrum . Here, we conducted starvation and refeeding studies to monitor the fate of prey nuclei acquired by  M. rubrum  when feeding on  Teleaulax amphioxeia  and to explore the influence of the retained prey nucleus on photosynthesis of  M. rubrum . Results indicate that enlargement of the prey nucleus does not result from fusion of nuclei. Furthermore, the enlarged prey nucleus does not appear to divide during cell division of  M. rubrum . The presence of a prey nucleus significantly affected photosynthetic performance of  M. rubrum , while the number of retained chloroplasts had little influence on rate of carbon fixation. We interpret results within the context of a model that considers the dynamics of ingested prey nuclei during division of  M. rubrum .

Dynamics of Sequestered Cryptophyte Nuclei in Mesodinium rubrum during Starvation and Refeeding