phragmoplastn.

Brit.

/ˈfraɡməplɑːst/,

/ˈfraɡməplast/, U.S.

/ˈfræɡməˌplæst/

Forms: 1900s– phragmaplast (rare), 1900s– phragmoplast.

Origin: A borrowing from German. Etymon: German Phragmoplast.

Etymology: < German Phragmoplast (L. Errera 1888, in Bot. Centralbl. 34 397) < ancient Greek ϕράγμα fence, screen (see phragma n.) + German -o- -o- connective + -plast -plast comb. form.In form phragmaplast after phragma n.

Botany.

A set of microtubules which forms during mitosis in some plant cells, appearing as a barrel-shaped structure linking the two sets of chromosomes after they have separated to the poles, and lasting until the formation of the cell plate.

ΘΚΠ

the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > parts of cell > other parts

disc1835

crystalloid1863

autoplast1884

plastid1885

granum1894

primary endosperm nucleus1897

chromoplast1902

phragmoplast1904

plasmodesma1905

phragmosome1940

1904 Bot. Gaz. 38 232 Some stages in mitosis are more readily and more profoundly influenced than others. The phragmoplast is most resistant.

1946 Amer. Jrnl. Bot. 33 687/1 The cell plate appears..as a vacuolated line across the phragmaplast.

1976 A. W. Davidson in M. M. Yeoman Cell Division in Higher Plants xii. 419 The phragmoplast, which heralds cell plate formation, appears at the equator of the mitotic spindle and moves centrifugally outwards along the phragmosome.

1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) xiii. 783 Actin filaments..form a radial network that extends from the edge of the phragmoplast to the cell cortex, creating a ring around the cell.

Derivatives

phragmoˈplastic adj.

ΘΚΠ

the world > plants > part of plant > cell or aggregate tissue > [adjective] > of parts of cells

phragmoplastic1930

1930 Bull. Torrey Bot. Club 57 371 These initial stages in phragmoplastic activity may persist for a longer or shorter period.

1953 K. Esau Plant Anat. iii. 62 Phragmoplastic fibers appearing at the margins of the cell plate.

2001 Science (Nexis) 14 Dec. 2351 Key morphological characters uniting these three lineages include branched filamentous growth, oogamous sexual reproduction, and phragmoplastic cell division.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	phragmoplast
释义	phragmoplastn. Brit. /ˈfraɡməplɑːst/, /ˈfraɡməplast/, U.S. /ˈfræɡməˌplæst/ Forms: 1900s– phragmaplast (rare), 1900s– phragmoplast. Origin: A borrowing from German. Etymon: German Phragmoplast. Etymology: < German Phragmoplast (L. Errera 1888, in Bot. Centralbl. 34 397) < ancient Greek ϕράγμα fence, screen (see phragma n.) + German -o- -o- connective + -plast -plast comb. form.In form phragmaplast after phragma n. Botany. A set of microtubules which forms during mitosis in some plant cells, appearing as a barrel-shaped structure linking the two sets of chromosomes after they have separated to the poles, and lasting until the formation of the cell plate. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > parts of cell > other parts disc1835 crystalloid1863 autoplast1884 plastid1885 granum1894 primary endosperm nucleus1897 chromoplast1902 phragmoplast1904 plasmodesma1905 phragmosome1940 1904 Bot. Gaz. 38 232 Some stages in mitosis are more readily and more profoundly influenced than others. The phragmoplast is most resistant. 1946 Amer. Jrnl. Bot. 33 687/1 The cell plate appears..as a vacuolated line across the phragmaplast. 1976 A. W. Davidson in M. M. Yeoman Cell Division in Higher Plants xii. 419 The phragmoplast, which heralds cell plate formation, appears at the equator of the mitotic spindle and moves centrifugally outwards along the phragmosome. 1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) xiii. 783 Actin filaments..form a radial network that extends from the edge of the phragmoplast to the cell cortex, creating a ring around the cell. Derivatives phragmoˈplastic adj. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [adjective] > of parts of cells phragmoplastic1930 1930 Bull. Torrey Bot. Club 57 371 These initial stages in phragmoplastic activity may persist for a longer or shorter period. 1953 K. Esau Plant Anat. iii. 62 Phragmoplastic fibers appearing at the margins of the cell plate. 2001 Science (Nexis) 14 Dec. 2351 Key morphological characters uniting these three lineages include branched filamentous growth, oogamous sexual reproduction, and phragmoplastic cell division. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.1904
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