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- Stromule abstract "Stromules are microscopic structures found in plant cells. Stromules (stroma-filled tubules) are highly dynamic structures extending from the surface of all plastid types, including proplastids, chloroplasts, etioplasts, leucoplasts, amyloplasts, and chromoplasts. They were rediscovered in 1997 and have since been reported to exist in a number of angiosperm species including Arabidopsis thaliana, wheat, rice and tomato, but their role is not yet fully understood.This highly dynamic nature is caused by the close relationship between plastid stromules and actin microfilaments, which are anchored to the stromule extensions, either in a longitudinal fashion to pull from the stromule and guide the plastid in a given direction or in a hinge fashion allowing the plastid to rest anchored in a given place. The actin microfilaments also define the stromule shape through their interactions. This dynamic random walk-like movement is probably caused by Myosin XI proteins as a recent work found.Other organelles are also associated to stromules, as mitochondria, which have been observed associated and sliding over stromule tubes. Plastids and mitochondria need to be spatially close as some metabolic pathways like photorespiration require the association of both organelles to recycle glycolate and detoxify the ammonium produced during photorespiration.Stromules are usually 0.35–0.85 µm in diameter and of variable length, from short beak-like projections to linear or branched structures up to 220 µm long. They are enclosed by the inner and outer plastid envelope membranes and enable the transfer of molecules as large as RuBisCO (~560 kDa) between interconnected plastids. Stromules occur in all cell types, but stromule morphology and the proportion of plastids with stromules vary from tissue to tissue and at different stages of plant development. In general, smaller plastids produce shorter stromules, although the largest plastids, mesophyll chloroplasts procuce relatively short stromules, indicating that other factors control stromule formation. In general, stromules are more abundant in cells containing non-green plastids, and in cells containing smaller plastids. The primary function of stromules is still unresolved, although the presence of stromules markedly increases the plastid surface area, potentially increasing transport to and from the cytosol. Other functions of stromules, such as transfer of macromolecules between plastids and starch granule formation in cereal endosperm, may be restricted to particular tissues and cell types.".
- Stromule wikiPageExternalLink pmidlookup?view=long&pmid=15699062.
- Stromule wikiPageExternalLink article.php?ch=e&id=122.
- Stromule wikiPageID "2661326".
- Stromule wikiPageLength "5630".
- Stromule wikiPageOutDegree "32".
- Stromule wikiPageRevisionID "671980821".
- Stromule wikiPageWikiLink Ammonium.
- Stromule wikiPageWikiLink Amyloplast.
- Stromule wikiPageWikiLink Angiosperm.
- Stromule wikiPageWikiLink Arabidopsis_thaliana.
- Stromule wikiPageWikiLink Atomic_mass_unit.
- Stromule wikiPageWikiLink Category:Cell_anatomy.
- Stromule wikiPageWikiLink Category:Plant_physiology.
- Stromule wikiPageWikiLink Chloroplast.
- Stromule wikiPageWikiLink Chromoplast.
- Stromule wikiPageWikiLink Dalton_(unit).
- Stromule wikiPageWikiLink Endosperm.
- Stromule wikiPageWikiLink Etioplast.
- Stromule wikiPageWikiLink Flowering_plant.
- Stromule wikiPageWikiLink Glycolate.
- Stromule wikiPageWikiLink Glycolic_acid.
- Stromule wikiPageWikiLink Leaf.
- Stromule wikiPageWikiLink Leucoplast.
- Stromule wikiPageWikiLink Membrane_nanotube.
- Stromule wikiPageWikiLink Metabolic_pathway.
- Stromule wikiPageWikiLink Metabolic_pathways.
- Stromule wikiPageWikiLink Microscopy.
- Stromule wikiPageWikiLink Mitochondria.
- Stromule wikiPageWikiLink Mitochondrion.
- Stromule wikiPageWikiLink Myosin.
- Stromule wikiPageWikiLink Organelle.
- Stromule wikiPageWikiLink Organelles.
- Stromule wikiPageWikiLink Photorespiration.
- Stromule wikiPageWikiLink Plant_cell.
- Stromule wikiPageWikiLink Plastid.
- Stromule wikiPageWikiLink Plastids.
- Stromule wikiPageWikiLink Proplastid.
- Stromule wikiPageWikiLink Rice.
- Stromule wikiPageWikiLink RuBisCO.
- Stromule wikiPageWikiLink Rubisco.
- Stromule wikiPageWikiLink Starch.
- Stromule wikiPageWikiLink Tomato.
- Stromule wikiPageWikiLink Wheat.
- Stromule wikiPageWikiLinkText "Stromule".
- Stromule wikiPageWikiLinkText "stromule".
- Stromule hasPhotoCollection Stromule.
- Stromule wikiPageUsesTemplate Template:Cite_journal.
- Stromule wikiPageUsesTemplate Template:Reflist.
- Stromule subject Category:Cell_anatomy.
- Stromule subject Category:Plant_physiology.
- Stromule hypernym Structures.
- Stromule type Building.
- Stromule comment "Stromules are microscopic structures found in plant cells. Stromules (stroma-filled tubules) are highly dynamic structures extending from the surface of all plastid types, including proplastids, chloroplasts, etioplasts, leucoplasts, amyloplasts, and chromoplasts.".
- Stromule label "Stromule".
- Stromule sameAs Stromulus.
- Stromule sameAs Estrómulo.
- Stromule sameAs ストロミュール.
- Stromule sameAs m.07w3l7.
- Stromule sameAs Q2356991.
- Stromule sameAs Q2356991.
- Stromule wasDerivedFrom Stromule?oldid=671980821.
- Stromule isPrimaryTopicOf Stromule.