Protista

(redirected from protistan)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

Protista

 [pro-tis´tah]
in the classification of living organisms, a kingdom comprising unicellular organisms with distinct nuclei (the eukaryotes), including protozoa, algae (except blue-green “algae,” which are now classified as bacteria), and certain intermediate forms.

Pro·tis·ta

(prō-tis'tă),
A kingdom of both plantlike and animallike eucaryotic unicellular organisms, either in the form of solitary organisms, for example, protozoa, or colonies of cells lacking true tissues.
[G. ntr. pl. of prōtistos, the first of all]

Protista

/Pro·tis·ta/ (pro-tis´tah)
1. a kingdom comprising the unicellular bacteria, algae, slime molds, fungi, and protozoa; it includes all single-celled organisms.
2. a kingdom comprising unicellular organisms with distinct nuclei (the eukaryotes), including protozoa, algae, and certain intermediate forms.

Pro·tis·ta

(prō-tis'tă)
A kingdom of both plantlike and animallike eukaryotic unicellular organisms, either in the form of solitary organisms, e.g., protozoa, or colonies of cells lacking true tissues.
[G. ntr. pl. of prōtistos, the first of all]

Protista

or

Protoctista

the kingdom, in older CLASSIFICATIONS, which contains eukaryotic, mostly unicellular, organisms, including ALGAE, diatoms (BACILLARIOPHYCEAE), PROTOZOANS and slime moulds.

Protista

a kingdom comprising bacteria, algae, slime molds, fungi and protozoa; it includes all single-celled prokaryotic organisms.
References in periodicals archive ?
8 %) daily production (see Table 3), suggesting a strong top-down regulation of protistan populations.
Every four months (December, April and August), fifteen oysters were haphazardly removed from each bag to evaluate condition index and infection intensity by the protistan parasite Perkinsus marinus, as described in Condition Index and Parasitic Infection.
Sorospermium) an aquatic protistan parasite about which relatively little has been discovered.
Furthermore, although protistan kleptoplasty often involves the presence of algal nuclei or nuclear remnants in addition to the chloroplast within the host cell (Gast et al.
Stramenopiles: chromophytes from a protistan perspective.
Ichthyophthirius multifiliis ("Ick") is a ciliated, parasitic protistan that commonly infests freshwater fish.
We experimentally examined the association between variation in protistan consumer diversity and standing unicellular algal biomass in microbial microcosms to test for patterns of association between biotic diversity and autotrophic biomass.
The protistan parasite Perkinsus marinus is found on the east coast of the United States from Maine to Florida and in the Gulf of Mexico (Andrews 1988, Ford & Tripp 1996).
Recent studies found that a small subunit sequence of r DNA to be similar to that of members of the Dermocystidium genus: aquatic protistan fish parasites that belong to the DRIP clade.