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sporopollenin

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sporopollenin
sporopollenin Biochem. (-ˈpɒlənɪn) [a. G. sporopollenin (Zetsche & Vicari 1931, in Helv. Chim. Acta XIV. 64): see sporonin and pollenin.] An inert substance, consisting largely of polysaccharides, that forms the resistant outer coating of spores and pollen grains.1931 Chem. Abstr. XXV. 2455 The crud... Oxford English Dictionary
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Sporopollenin
Sporopollenin is one of the most chemically inert biological polymers. Sporopollenin has found uses in the field of paleoclimatology as well. wikipedia.org
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Phenylpropanoid
Sporopollenin Phenylpropanoids and other phenolics are part of the chemical composition of sporopollenin. It is related to cutin and suberin. It is likely that sporopollenin is derived from several precursors that are chemically cross-linked to form a rigid structure. wikipedia.org
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sporonin
sporonin Biochem. (ˈspɒrənɪn) [a. G. sporonin (Zetsche & Huggler 1928, in Ann. der Chem. CDLXI. 94): see sporo- and -in1.] An inert substance forming the resistant outer covering of spores. Cf. sporopollenin.1928 Chem. Abstr. XXII. 2949 This, after prolonged digestion with HCl, followed by boiling w... Oxford English Dictionary
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Dinosporin
This organic compound has similarities to sporopollenin, but is unique to dinoflagellates. Previous descriptions of dinosporin having similar properties to sporopollenin were based on both compounds’ resistance to hydrolysis and high preservation wikipedia.org
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pollenin
ˈpollenin Chem. [ad. F. pollénine, f. pollen: see -in1.] A supposed peculiar substance obtained from pollen, and from the spores of Lycopodium: see quots. Cf. sporopollenin. Quot. 1931 does not represent a new sense.1816 Thomson's Ann. Philos. VII. 49 The pollen, he [Professor John] finds, always co... Oxford English Dictionary
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Chlorotetraedron
However, Tetraedron has uninucleate cells (i.e. with a single nucleus at maturity), only produces autospores and not zoospores, and has a rough outer sporopollenin wikipedia.org
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carotinoid
carotenoid, carotinoid Biochem. (ˈkærətɪnɔɪd) [ad. G. Carotinoïde (M. Tswett 1911, in Ber. d. Deut. Bot. Ges. XXIX. 630); see prec. + -oid.] Any one of a group of pigments including the carotenes, the xanthophylls, and fucoxanthin, found in many plants and animals. Also attrib. or as adj.1913 Chem. ... Oxford English Dictionary
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Cryptospore
Chemical composition (Some) cryptospores are composed of sporopollenin and have the same chemical makeup as co-occurring trilete spores. wikipedia.org
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Pediastrum
These walls are difficult to break down due to the presence of sporopollenin and silica, which the algae uses to defend itself against infection. wikipedia.org
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Protosalvinia
Lignin and cutin have been found in the thalli, and sporopollenin in the spore walls. wikipedia.org
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Micractinium
Both lack sporopollenin in their cell walls, and have pyrenoids that are transversed by thylakoid membranes and covered in a starch sheath. wikipedia.org
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Conchiolin
See also Chitin Corneous Mollusc shell Periostracum Sporopollenin Tectin External links Structure of the conchiolin cases of the prisms in Mytilus wikipedia.org
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Aroideae
Many Aroideae have spiny pollen grains without a sporopollenin outer exine layer and lacking an aperture. wikipedia.org
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Zygomycota
The walls of these spores contain sporopollenin in some species. Sporopollenin is formed out of β-carotene and is very resistant to biological and chemical degradation. wikipedia.org
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