obligate

[ob´lĭ-gāt]

not facultative; necessary; compulsory; pertaining to or characterized by the ability to survive only in a particular environment or to assume only a particular role, as an obligate anaerobe.

ob·li·gate

(ob'li-gāt),

Without an alternative system or pathway.

[L. ob-ligo, pp. -atus, to bind to]

Farlex Partner Medical Dictionary © Farlex 2012

obligate

(ŏb′lĭ-gāt′)

adj. (-gĭt, -gāt′)

Able to exist or survive only in a particular environment or by assuming a particular role: an obligate parasite; an obligate anaerobe.

n. (-gĭt, -gāt′)

An obligate organism.

ob′li·ga·ble (-gə-bəl) adj.

ob′li·gate·ly adv.

ob′li·ga′tor n.

obligate

adjective Necessarily; without alternative; required.

obligate

adjective Necessarily; without alternative

ob·li·gate

(ob'li-găt)

Without an alternative system or pathway.

[L. ob-ligo, pp. -atus, to bind to]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

obligate

Able to survive only in a particular environment. Used especially of certain parasites.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

obligate

(of an organism) being able to live only in one set of conditions. For example, obligate parasites such as the tapeworm require a host for completion of the life cycle; obligate aerobes such as man require atmospheric oxygen for respiration. Compare FACULTATIVE.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

Nonetheless, given the high frequency at which animal blastomeres contributed to endoderm and the lower frequency at which vegetal blastomeres contributed to ectoderm compared to obligately plank-totrophic echinoids (as in Fig.

A shift in germ layer allocation is correlated with large egg size and facultative planktotrophy in the echinoid Clypeaster rosaceus

luteola have evolved habitat-restricted searching behavior either before, coincidentally with, or after becoming obligately associated with Cecropia.

Experimental studies of species-specificity in Cecropia-ant relationships

Ehrlichiae are obligately intraleukocytic bacteria.

Tick, tick, tick, tick ... boom! The explosion of tick-borne diseases

nov, sp nov, the obligately intracellular bacterium of porcine proliferative enteropathy.

Detection of Lawsonia intracellularis fecal shedding in dogs in Minas Gerais, Brazil/Deteccao de Lawsonia intracellularis em fezes de caes em Minas Gerais, Brasil

Downy mildew disease of cultivated tobacco (Nicotiana tabacum L.), commonly known as blue mold, is caused by the obligately biotrophic oomycete pathogen Peronospora tabacina D.B.

Overexpression of the synthetic chimeric Native-T-Phylloplanin-GFP genes optimized for monocot and dicot plants renders enhanced resistance to blue mold disease in tobacco (N. tabacum L.)

To the Editor: Bulleidia extructa is an obligately anaerobic, nonmotile, non-spore-forming gram-positive bacillus first described in 2000 by Downes et al.

Bulleidia extructa periprosthetic hip joint infection, United States

schinkii are two obligately syntrophic bacteria which grow only in co- culture with methanogens (de Bok et al., 2005; Imachi et al.,2007).

Syntrophic Propionate Degradation in Anaerobic Digestion: A Review

interexta are considered facultative or marginal vernal pool species; they are often associated with moist depressions and other seasonally wet habitats, but are not obligately tied to vernal depressions as are the core clade members.

Allotetraploids in patagonia with affinities to western North American diploids: did dispersal or genome doubling occur first?

These few species have breeding biologies that span the range of self fertility, from self compatible to self incompatible; a few are obligately xenogamous.

Breeding biology of the threadstalk milkvetch, Astragalus filipes (Fabaceae), with a review of the genus

nov., a halophilic obligately anaerobic bacterium producing endospores with attached gas vacuoles.

Isolation and characterization of halophilic bacteria from the dead sea coast, Jordan

nov., a mesophilic obligately chemolithotrophic bacterium isolated from a deep-sea hydrothermal vent in the Fiji Basin.

Interrelationships between vent fluid chemistry, temperature, seismic activity, and biological community structure at a mussel-dominated, deep-sea hydrothermal vent along the East Pacific Rise

Embryological analyses showed that this plant is obligately apomictic.

Registration of Q4188 and Q4205, sexual tetraploid germplasm lines of bahiagrass. (Registrations of Germplasms)