Difference between revisions of "Ascus wall layer"
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| − | '''ascus wall layer''' (''pl.'' ascus wall layers) – the differentiation of the ascus wall as observed by transmission electron microscopy (TEM).The ascus is typically covered on the outside by a gelatinous layer ([[gelin]], ''g-layer'') forming a [[fuzzy coat]]. The wall itself is further differentiated from the outside towards the inside into at least three main layers, named ''a-'', ''b-'', and ''c-layer''. Some asci also have a fourth inner layer, the ''d-layer''. This d-layer is often further differentiated throughout the tholus. For example, [[tholus flank]]s (the [[bourrelet]]) are sometimes formed by the d2-layer; the [[central cone]] (or [[apical cushion]]) is formed by the d1-layer; an axial mass is formed by an apical swelling of the c-layer. These ultrastructural wall layers are ''not'' identical with the ''functional layers'' ([[tunicae]]) that form [[exo–]] and [[endoascus]]. | + | '''ascus wall layer''' ([[Category:Noun]][[:Category:Noun|noun]], [[Category:Ascus term]][[:Category:Ascus term|ascus term]], ''pl.'' ascus wall layers) – the differentiation of the [[ascus wall]] as observed by transmission electron microscopy (TEM). The [[ascus]] is typically covered on the outside by a [[gelatinous]] layer ([[gelin]], ''g-layer'') forming a [[fuzzy coat]]. The wall itself is further differentiated from the outside towards the inside into at least three main layers, named ''a-'', ''b-'', and ''c-layer''. Some [[asci]] also have a fourth inner layer, the ''d-layer''. This d-layer is often further differentiated throughout the [[tholus]]. For example, [[tholus flank]]s (the [[bourrelet]]) are sometimes formed by the d2-layer; the [[central cone]] (or [[apical cushion]]) is formed by the d1-layer; an axial mass is formed by an apical swelling of the [[c-layer]]. These [[ultrastructural]] wall layers are ''not'' identical with the ''functional layers'' ([[tunicae]]) that form [[exoascus|exo–]] and [[endoascus]]. ''Related terms:'' [[exoascus]], [[exotunica]], [[expansible inner layer]], [[fuzzy coat]], [[gelin]], [[tunica]], [[tunicle]], [[endoascus]], [[ascoplasm]]. ''This is:'' [[Category:Part of ascus]][[:Category:Part of ascus|part of ascus]]. |
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Latest revision as of 02:00, 7 December 2005
ascus wall layer (noun,ascus term, pl. ascus wall layers) – the differentiation of the ascus wall as observed by transmission electron microscopy (TEM). The ascus is typically covered on the outside by a gelatinous layer (gelin, g-layer) forming a fuzzy coat. The wall itself is further differentiated from the outside towards the inside into at least three main layers, named a-, b-, and c-layer. Some asci also have a fourth inner layer, the d-layer. This d-layer is often further differentiated throughout the tholus. For example, tholus flanks (the bourrelet) are sometimes formed by the d2-layer; the central cone (or apical cushion) is formed by the d1-layer; an axial mass is formed by an apical swelling of the c-layer. These ultrastructural wall layers are not identical with the functional layers (tunicae) that form exo– and endoascus. Related terms: exoascus, exotunica, expansible inner layer, fuzzy coat, gelin, tunica, tunicle, endoascus, ascoplasm. This is:part of ascus.
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