The Rhizaria are a diverse and species-rich supergroup of mostly unicellular [3] eukaryotes. [4] Except for the Chlorarachniophytes and three species in the genus Paulinella in the phylum Cercozoa, they are all non-photosynthetic, but many Foraminifera and Radiolaria have a symbiotic relationship with unicellular algae. [5]

Rhizaria. The Rhizaria supergroup includes many of the amoebas, most of which have threadlike or needle-like pseudopodia (Figure \(\PageIndex{13}\)). Pseudopodia function to trap and engulf food particles and to direct movement in rhizarian protists. These pseudopods project outward from anywhere on the cell surface and can anchor to a substrate.

The Rhizaria supergroup includes many of the amoebas with thin threadlike, needle-like or root-like pseudopodia (Ammonia tepida, a Rhizaria species, can be seen in Figure 1), rather than the broader lobed pseudopodia of the Amoebozoa.

Rhizaria: this is a diverse group of mostly heterotrophic unicellular eukaryotes including both amoeboid and flagellate forms [35]. Two iconic protist groups, Haeckel's Radiolaria and the Foraminifera, are members of the Rhizaria.

2014年2月3日 · Rhizaria is the last-born in the current family of eukaryotic supergroups, and we are only starting to come to grip with its diversity. Rhizaria remains the least studied supergroup, and, importantly, the lineages about which we know the most are the least representative of the group as a whole.

2016年4月20日 · Large amoeba-like organisms known as Rhizaria have often been overlooked in studies of ocean biology and biogeochemistry. Underwater imaging and ecological network analyses are revealing their...

2024年11月23日 · Rhizaria are a supergroup of protists, typically amoebas, that are characterized by the presence of needle-like pseudopodia.