Pesquizas sobre o Copromastix prowazeki n. g. n. sp.

Aragão, Henrique de Beaurepaire

doi:10.1590/s0074-02761916000200005

Cited by 4 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Perhaps because Bunting found her strain in the rat cecum, Tetramitus has generally been considered coprophilic, and the majority of work has been done on strains recovered from contaminated environments, e.g. cecal contents of the rat and cockroach (Rafalko, 1951), feces of the human (Aragao, 1916) and the bat (Outka, 1965), and dung water (Hollande, 1942). However, Sandon (1927) reported the widespread occurrence of 7'.…”

mentioning

confidence: 99%

THE AMEBA-TO-FLAGELLATE TRANSFORMATION IN TETRAMITUS ROSTRATUS

Outka

Kluss

1967

The Journal of Cell Biology

View full text Add to dashboard Cite

Tetramitus exhibits independent ameboid and flagellate stages of remarkable morphological dichotomy. Transformation of the ameba involves the formation of four kinetosomes and their flagella. The arrangement of these kinetosomes and associated whorls of microtubules extending under the pellicle establishes the asymmetric flagellate form. While no recognizable kinetosomal precursors have been seen in amebae, and there is no suggestion of self-replication in dividing flagellates, developmental stages of kinetosomes have been identified. These are occasionally seen in association with the nucleus or with dense bodies which lie either inside of or close to the proximal end of the prokinetosome. Outgrowth of flagella involves formation of an axoneme and a membrane. From the distal tip of the kinetosome microtubules grow into a short bud, which soon forms an expanded balloon containing a reticulum of finely beaded filaments. The free ends of the microtubules appear unraveled; they are seen first as single elements, then as doublets, and finally are arranged into a cylinder. Growth in length is accompanied by a reduction in the diameter of the balloon. The concept that the formation of the kinetic apparatus might involve a nuclear contribution, followed by a spontaneous assembly of microtubules, is suggested.

show abstract

mentioning

confidence: 99%

THE AMEBA-TO-FLAGELLATE TRANSFORMATION IN TETRAMITUS ROSTRATUS

Outka

Kluss

1967

The Journal of Cell Biology

View full text Add to dashboard Cite

show abstract

Binary fission in the amoeboid and flagellate phases of tetramitus rostratus (Protozoa)

Bunting

Wenrich

1929

Journal of Morphology

View full text Add to dashboard Cite

AUTHORS' ABSTRACTI i~i i s ,if this ;iniorl,oHiigt,lliite is similar i i i striirriirr i n liotli yliitses of f a i r l y largt. caryiismir S U~~O I I I I~C~ h y : I ~iericaryosomal ar1.a i n which ic pericaryosonial grnnulrs i i i i a fine reticuliiiii. O n t h e i n n e r s u r f a c e ca is R h y e r of epithcwil chriinintie granules. s similiir in both nmiieli:~ and flagt~llate phases. D u r i n g t h e prophase arid t h e expanded earyosnmc. h r r o m e s resolved into hasolihilic a n d osylihilic compoirrnts a n d nssumt's either a n iihlong, dunili-hell. or spindle shape.The i,rrirar\,osoiir;tl granules P n l a r p . 4hift nbont, i i r i d eveiitua11y beconie a r r a n g e d i n a n equatorial h n d aroilird t h e elongated oaryosome. 1 1 1 the m c t : i~~h t h e equatorial plate of ehromo-SOIIICS ;ippt~ars nfttsr t h e i n w a r d migration of tlit, pt'rir: sonial granules, acronipaiiied b y thi, fiiriuiitiori of a definite intr:inuelrar siiindle, ~i s i i x l l y t h 1)olar masses, polar granule?, :arid it i'riitrodcsmrist*, Aftrr t h r Iiii~e!vai~d mi~rii.tiori of the d:ii:ghtc,r ])liltes of chroniosonies 111 thr an:ililiasr, the tt4o~ihasr cui'htrictioii of the 11iic1t~;rr meiiihr~inr p r o d u w s tw(i daughtrr iiriclPi with i i Iiortioii of tlir cpiiidle r i m i i i n i n p oiitsidr. T h r eliitliet?tl laser of g r a n u l e s r e m a i n s i l i ~i l a c r on the nuclear ~iirruhr:riie dririiip i h v r i r t i w I\rocc*s of mitosis. I'lasmoton~y n o~i i i a I!? folloxvs 111 i tosi s, bii t 111 :I y hi, di.1 ii y i~l , givi n p rise to m tilt i iiiirleat 12 i n dividn nl R. I n the flagellate tlic h1el)hiiroplast i i~u i i l l y d i v i d r s siiiiriltatieously \t.itli, hiit indepeiidentlp of.t h e nucleus. T h r r e are m a n y diviJrgeirws i n the dt4:iils of mitosis. h u t thrse are thought to he variations of one type of dirisioii rat1it.r tliiiii rxiini~ilcs of different ~irocesses.

show abstract

Mitotic division in the amoebo‐flagellate, Tetramitus rostratus

Rafalko¹

1951

Journal of Morphology

View full text Add to dashboard Cite

THIRTY-SEVEN FIQURESNuclear division of both the amoeboid and the flagellate forms of Tetrarnitus rostratus was described by Bunting and Wenrich ('29); but because the Feulgen technique was not widely used at that time, haematoxylin-stained preparations furnished the chief criteria for the interpretation of the nuclear structure and the mitotic process. Both the nuclear structure and the general account of its division, though incomplete, were portrayed and described as accurately as the technological limitations warranted.Hollande ('42), however, gave an account of his studies of nuclear structure and division that was so divergent from that of the above authors, as well as of the present work, that an account based on the study of material stained with the Feulgen technique, reputedly specific for chromatin selectivity, seemed quite essential for a more complete cytological interpretation. MATERIALS AND METHODSThe amoebo-flagellate used in the present study was found in fecal cultures both from the coecal contents of a rat and from the rectum of a cockroach. A clone culture was started by placing a single amoeba into a. culture-medium consistinq of a suspension of human feces in boiled pond water filtered 'The reproduction of plates of drawings which illustrate this paper was financed by a grant giren by Southern Illinois University.

show abstract

Pesquizas sobre o Copromastix prowazeki n. g. n. sp.

Cited by 4 publications

References 0 publications

THE AMEBA-TO-FLAGELLATE TRANSFORMATION IN TETRAMITUS ROSTRATUS

THE AMEBA-TO-FLAGELLATE TRANSFORMATION IN TETRAMITUS ROSTRATUS

Binary fission in the amoeboid and flagellate phases of tetramitus rostratus (Protozoa)

Mitotic division in the amoebo‐flagellate, Tetramitus rostratus

Contact Info

Product

Resources

About