Trophic flexibility of marine diplonemids-switching from osmotrophy to bacterivory

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F22%3A00557051" target="_blank" >RIV/60077344:_____/22:00557051 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12520/22:43904482 RIV/60076658:12310/22:43904482

Result on the web

<a href="https://www.nature.com/articles/s41396-022-01192-0" target="_blank" >https://www.nature.com/articles/s41396-022-01192-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41396-022-01192-0" target="_blank" >10.1038/s41396-022-01192-0</a>

Result language

angličtina

Original language name

Trophic flexibility of marine diplonemids-switching from osmotrophy to bacterivory

Original language description

Diplonemids are one of the most abundant groups of heterotrophic planktonic microeukaryotes in the world ocean and, thus, are likely to play an essential role in marine ecosystems. So far, only few species have been introduced into a culture, allowing basic studies of diplonemid genetics, morphology, ultrastructure, metabolism, as well as endosymbionts. However, it remains unclear whether these heterotrophic flagellates are parasitic or free-living and what are their predominant dietary patterns and preferred food items. Here we show that cultured diplonemids, maintained in an organic-rich medium as osmotrophs, can gradually switch to bacterivory as a sole food resource, supporting positive growth of their population, even when fed with a low biovolume of bacteria. We further observed remarkable differences in species-specific feeding patterns, size-selective grazing preferences, and distinct feeding strategies. Diplonemids can discriminate between low-quality food items and inedible particles, such as latex beads, even after their ingestion, by discharging them in the form of large waste vacuoles. We also detected digestion-related endogenous autofluorescence emitted by lysosomes and the activity of a melanin-like material. We present the first evidence that these omnipresent protists possess an opportunistic lifestyle that provides a considerable advantage in the generally food resource-limited marine environments.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

The ISME Journal

ISSN

1751-7362

e-ISSN

1751-7370

Volume of the periodical

16

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

1409-1419

UT code for WoS article

000743834700001

EID of the result in the Scopus database

2-s2.0-85122869791