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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/29173

Title: Ascospore ultrastructure of Halosarpheia fibrosa (Halosphaeriales, Ascomycota)
Authors: Pang Ka-Lai;Jones E.B. Gareth;Chiang Wai-Lun;Vrijmoed Lilian L.P.
Contributors: NTOU:Institute of Marine Biology
國立臺灣海洋大學:海洋生物研究所
Keywords: Halosphaeriaceae;marine fungi;systematics;taxonomy
Date: 2006-08
Issue Date: 2011-10-21T03:04:44Z
Publisher: E. Schweizerbart'sche Verlagsbuchhandlung
Abstract: Abstract:An ultrastructural study was undertaken to characterise Halosarpheia sensu stricto by examining ascospores and appendages of the type species, H. fibrosa. At the transmission ultrastructural level, ascospores comprise a tetralaminate mesosporium with different degrees of electron density and an electron-dense episporium. In the inner three mesosporic layers, fibrils are arranged longitudinally while the outer mesosporic layer has radiating fibrils. An electron-dense delimiting membrane surrounds the whole ascospore and appendages. Appendages comprise an amorphous component of granular appearance and coiled electron-dense threads. A tiny protrusion was observed at the ascospore poles, where the appendage connects to the ascospore wall. Appendage precursor material originates from the mesosporium through discontinuities in the episporium. The ascospore wall of Halosarpheia trullifera still needs re-examination to determine the nature of the outer wall layer and to understand its taxonomic placement in Halosarpheia sensu stricto.
Relation: 83(1-2), pp.207-217
URI: http://ntour.ntou.edu.tw/handle/987654321/29173
Appears in Collections:[海洋生物研究所] 期刊論文

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