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- Sporopollenin abstract "Sporopollenin is one of the most chemically inert biological polymers. It is a major component of the tough outer (exine) walls of plant spores and pollen grains. It is chemically very stable and is usually well preserved in soils and sediments. The exine layer is often intricately sculptured in species-specific patterns (see image at right), allowing material recovered from (for example) lake sediments to provide useful information to palynologists about plant and fungal populations in the past. Sporopollenin has found uses in the field of paleoclimatology as well. Sporopollenin is also found in the cell walls of several taxa of green alga, including Phycopeltis (an ulvophycean) and Chlorella.The chemical composition of sporopollenin is not exactly known, due to its unusual chemical stability and resistance to degradation by enzymes and strong chemical reagents. Analyses have revealed a mixture of biopolymers, containing mainly long chain fatty acids, phenylpropanoids, phenolics and traces of carotenoids. Tracer experiments have shown that phenylalanine is a major precursor, but other carbon sources also contribute. It is likely that sporopollenin derives from several precursors that are chemically cross-linked to form a rigid structure. Electron microscopy shows that the tapetal cells that surround the developing pollen grain in the anther have a highly active secretory system containing lipophilic globules. These globules are believed to contain sporopollenin precursors. Chemical inhibitors of pollen development and many male sterile mutants have effects on the secretion of these globules by the tapetal cells.Sporopollenin has been applied in the nutrition and pharmaceutical fields, where it is claimed to have medicinal and health benefits".
- Sporopollenin thumbnail Misc_pollen.jpg?width=300.
- Sporopollenin wikiPageExternalLink contents.php?vol=49&issue=5-6&doi=052019lb.
- Sporopollenin wikiPageID "1127490".
- Sporopollenin wikiPageLength "4263".
- Sporopollenin wikiPageOutDegree "29".
- Sporopollenin wikiPageRevisionID "681127022".
- Sporopollenin wikiPageWikiLink Anther.
- Sporopollenin wikiPageWikiLink Biopolymer.
- Sporopollenin wikiPageWikiLink Carotenoid.
- Sporopollenin wikiPageWikiLink Category:Palynology.
- Sporopollenin wikiPageWikiLink Category:Pollination.
- Sporopollenin wikiPageWikiLink Chitin.
- Sporopollenin wikiPageWikiLink Chlorella.
- Sporopollenin wikiPageWikiLink Conchiolin.
- Sporopollenin wikiPageWikiLink Cytoplasmic_male_sterility.
- Sporopollenin wikiPageWikiLink Electron_microscope.
- Sporopollenin wikiPageWikiLink Electron_microscopy.
- Sporopollenin wikiPageWikiLink Enzyme.
- Sporopollenin wikiPageWikiLink Fatty_acid.
- Sporopollenin wikiPageWikiLink File:Misc_pollen.jpg.
- Sporopollenin wikiPageWikiLink Green_alga.
- Sporopollenin wikiPageWikiLink Green_algae.
- Sporopollenin wikiPageWikiLink Male_sterile.
- Sporopollenin wikiPageWikiLink Natural_phenol.
- Sporopollenin wikiPageWikiLink Paleoclimatology.
- Sporopollenin wikiPageWikiLink Palynology.
- Sporopollenin wikiPageWikiLink Phenols.
- Sporopollenin wikiPageWikiLink Phenylalanine.
- Sporopollenin wikiPageWikiLink Phenylpropanoid.
- Sporopollenin wikiPageWikiLink Phycopeltis.
- Sporopollenin wikiPageWikiLink Plant.
- Sporopollenin wikiPageWikiLink Pollen.
- Sporopollenin wikiPageWikiLink Secretion.
- Sporopollenin wikiPageWikiLink Sediment.
- Sporopollenin wikiPageWikiLink Soil.
- Sporopollenin wikiPageWikiLink Spore.
- Sporopollenin wikiPageWikiLink Stamen.
- Sporopollenin wikiPageWikiLink Tapetal_cells.
- Sporopollenin wikiPageWikiLink Tapetum_(botany).
- Sporopollenin wikiPageWikiLink Tectin_(secretion).
- Sporopollenin wikiPageWikiLink Ulvophycea.
- Sporopollenin wikiPageWikiLink Ulvophyceae.
- Sporopollenin wikiPageWikiLinkText "Sporopollenin".
- Sporopollenin wikiPageWikiLinkText "sporopollenin".
- Sporopollenin hasPhotoCollection Sporopollenin.
- Sporopollenin wikiPageUsesTemplate Template:Citation_needed.
- Sporopollenin wikiPageUsesTemplate Template:Cite_journal.
- Sporopollenin wikiPageUsesTemplate Template:More_footnotes.
- Sporopollenin wikiPageUsesTemplate Template:Reflist.
- Sporopollenin subject Category:Palynology.
- Sporopollenin subject Category:Pollination.
- Sporopollenin type Article.
- Sporopollenin type Article.
- Sporopollenin type Science.
- Sporopollenin comment "Sporopollenin is one of the most chemically inert biological polymers. It is a major component of the tough outer (exine) walls of plant spores and pollen grains. It is chemically very stable and is usually well preserved in soils and sediments.".
- Sporopollenin label "Sporopollenin".
- Sporopollenin sameAs Esporopol·lenina.
- Sporopollenin sameAs Sporopolenin.
- Sporopollenin sameAs Sporopollenin.
- Sporopollenin sameAs Esporopolenina.
- Sporopollenin sameAs Sporopollénine.
- Sporopollenin sameAs Esporopolenina.
- Sporopollenin sameAs Sporopollenin.
- Sporopollenin sameAs Sporopollenina.
- Sporopollenin sameAs スポロポレニン.
- Sporopollenin sameAs Sporopollenine.
- Sporopollenin sameAs Sporopolenina.
- Sporopollenin sameAs Esporopolenina.
- Sporopollenin sameAs m.048msq.
- Sporopollenin sameAs สปอโรพอลเลนิน.
- Sporopollenin sameAs Q1067743.
- Sporopollenin sameAs Q1067743.
- Sporopollenin wasDerivedFrom Sporopollenin?oldid=681127022.
- Sporopollenin depiction Misc_pollen.jpg.
- Sporopollenin isPrimaryTopicOf Sporopollenin.