granumn.

/ˈɡrɑːnəm/

/ˈɡreɪnəm/

Forms: Usually as plural ˈgrana.

Etymology: < German granum (A. Meyer Das Chlorophyllkorn in chem. morphol. und biol. Beziehung (1883) ii. 24), < Latin grānum grain.

Botany.

Any of the discs which are arranged in stacks in the chloroplast, which are formed of membranes and in which the chlorophyll is incorporated.

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

1894 S. H. Vines Students' Text-bk. Bot. I. i. 100 The chlorophyll appears to exist in an oily solution, and to be confined to the fibrillar portions of the plastid, in the form of droplets (grana).

1898 H. C. Porter tr. E. Strasburger et al. Text-bk. Bot. i. i. 57 The fundamental substance of the chlorophyll bodies is itself colourless, but contains numerous coloured drops, which are termed Grana. These consist of an oleaginous substance, which holds various pigments in solution.

1966 R. B. Park in Vernon & Seely Chlorophylls ix. 286 The chlorophyll fluorescence is seen to reside primarily in the grana stacks.

1967 J. T. O. Kirk & R. A. E. Tilney-Bassett Plastids i. 30 Most of the thylakoids in a granum extend beyond the edge of the granum.

This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2018).

单词	granum
释义	granumn. /ˈɡrɑːnəm//ˈɡreɪnəm/ Forms: Usually as plural ˈgrana. Etymology: < German granum (A. Meyer Das Chlorophyllkorn in chem. morphol. und biol. Beziehung (1883) ii. 24), < Latin grānum grain. Botany. Any of the discs which are arranged in stacks in the chloroplast, which are formed of membranes and in which the chlorophyll is incorporated. 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 1894 S. H. Vines Students' Text-bk. Bot. I. i. 100 The chlorophyll appears to exist in an oily solution, and to be confined to the fibrillar portions of the plastid, in the form of droplets (grana). 1898 H. C. Porter tr. E. Strasburger et al. Text-bk. Bot. i. i. 57 The fundamental substance of the chlorophyll bodies is itself colourless, but contains numerous coloured drops, which are termed Grana. These consist of an oleaginous substance, which holds various pigments in solution. 1966 R. B. Park in Vernon & Seely Chlorophylls ix. 286 The chlorophyll fluorescence is seen to reside primarily in the grana stacks. 1967 J. T. O. Kirk & R. A. E. Tilney-Bassett Plastids i. 30 Most of the thylakoids in a granum extend beyond the edge of the granum. This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2018). < n.1894
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