periplasmn.
/ˈpɛrᵻplaz(ə)m/, U.S. /ˈpɛrəˌplæzəm/ 1. Mycology. In an oomycete, esp. one of the order Peronosporales: the outer portion of the cytoplasm in an oogonium or antheridium. Cf. ooplasm n. 2.
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the world > plants > particular plants > fungi > [noun] > parts of > reproductive parts
capsule1693
perithecium1800
aecidium1821
hymenium1830
pseudoperidium1832
pseudoperithecium1832
disc1842
trichidium1842
spicule1843
sporophore1849
stylospore1851
pycnide1856
cyst1857
pycnidium1857
basidium1858
cystidium1858
basidiospore1859
conidium1861
pollinarium1861
gonosphere1865
hymenophorum1866
spicula1866
teleutospore1866
promycelium1867
gonosphaerium1873
hymenophore1874
paracyst1874
sterigma1874
pollinodium1875
scolecite1875
uredospore1875
metuloid1879
operculum1879
uredo1879
aecidiospore1880
pycnidiospore1880
uredo-fruit1882
chlamydospore1884
teleutosorus1884
fruitcake1885
ascocarp1887
periplasm1887
pycnospore1887
pyrenocarp1887
macrostylospore1894
autobasidium1895
oidium1895
zygophore1904
aeciospore1905
aecium1905
pycniospore1905
teliospore1905
telium1905
uredinium1905
uredosorus1905
fruit-body1912
sporodochium1913
probasidium1916
fruiting body1918
pycnium1926
holobasidium1928
protoperithecium1937
uredium1937
1887 H. E. F. Garnsey & I. B. Balfour tr. H. A. de Bary Compar. Morphol. & Biol. Fungi v. 134 The space between the oosphere and the wall of the oogonium continues to be filled with a slightly granular hyaline protoplasm, the periplasm, which may easily be overlooked.
1937 H. C. I. Gwynne-Vaughan & B. Barnes Structure & Developm. of Fungi 90 In other Oomycetes, the solitary oosphere lives free in the oogonium, surrounded by some residual material, the periplasm.
1998 New Phytologist 140 337 (caption) Some polysaccharide fibrils are present in the periplasm in close contact with the thickenings [of the cell walls].
2. Entomology. The cytoplasm just inside the vitelline membrane of an insect's egg, surrounding the yolk.
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the world > life > biology > substance > cell > cell substance > [noun] > protoplasm or cytoplasm
biogen1848
protoplasm1848
protoplast1851
matrix1854
cytoplasm1857
plasma1863
bioplasm1869
plasmogen1888
morphoplasm1893
periplasm1925
1925 A. D. Imms Gen. Textbk. Entomol. 158 The protoplasm forms a reticulum which pervades the substance of the egg and also forms a bounding layer, or periplasm, which lies just beneath the vitelline membrane.
1984 L. W. Browder Developmental Biol. (ed. 2) x. 452 The remaining cytoplasm is located in the spaces surrounding the yolk particles and in a thin, peripheral layer (called the periplasm) just below the plasmalemma.
1995 Ann. Entomol. Soc. Amer. 88 809 Cleavage nuclei were observed 1st in the anterior 1/3 of the egg and, as they developed, became more evenly distributed into the periplasm.
3. Microbiology. The region of a bacterial or other cell between the plasma membrane and the cell wall or outer membrane.
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the world > life > biology > substance > cell > parts of cell > [noun] > regions
polar cap1887
inclusion1890
target1936
periplasm1961
1961 P. Mitchell in T. W. Goodwin & O. Lindberg Biol. Struct. & Function II. 590 Observations forced us to the conclusion that the glucose-6-phosphatase of intact Escherichia coli is enclosed in a region between the cell wall and the surface of the osmotic barrier component which we might appropriately call the ‘periplasm’.
1974 Jrnl. Bacteriol. 19 243/2 To determine whether the Hg(II)-reducing activity is present in the cytoplasm, the periplasm, or both.
2002 Jrnl. Bacteriol. 184 6490 An elongated lipoprotein that is hypothesized to span the periplasm and coordinate efflux of such substrates.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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