Skeletal ultrastructure of the calcified red alga Galaxaura oblongata, Hainan Island, China

	Skeletal ultrastructure of the calcified red alga Galaxaura oblongata, Hainan Island, China
	Mu, XA ; Riding, R
	1999-02-01
发表期刊	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN	0034-6667
卷号	104 期号:3-4 页码:205-212
摘要	Aragonite calcification in the red alga Galaxaura oblongata (Ellis et Solander) Lamouroux (Chaetangiaceae, Nemaliales) from southern China, occurs at three sites in the cortex: (1) intercellular spaces (ICS); (2) the cell wall, and (3) the inner surface of the cortex. The ICS is the principal site of calcification and contains aragonite mainly in the form of equidimensional granules similar to 1-2 mu m in size, although needle-like crystals up to 3 mu m in length are also present locally Granules range from densely to loosely packed. A dense and even layer peripheral to the ICS is interpreted to represent calcification of the cell wall. Coarser radial clumps of elongate crystals, forming a thin discontinuous layer on the inner surface of the cortex, resemble a cement fringe facing into the medulla, but form during the life of the alga. Calcification in these specimens shows similarities, and differences, to both coralline red algae, in which calcification is limited to the cell wall, and halimedacean green algae in which it is limited to the ICS. Some members of the Palaeozoic family Moniliporellaceae show similarities in their skeletal organization to Galaxaura. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词	algae calcification China Galaxaura Recent Rhodophyta Moniliporellaceae ultrastructure
语种	英语
关键词[WOS]	RHODOPHYTA
WOS研究方向	Plant Sciences ; Paleontology
WOS类目	Plant Sciences ; Paleontology
WOS记录号	WOS:000078766400002
出版者	ELSEVIER SCIENCE BV
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/828
专题	中国科学院南京地质古生物研究所
通讯作者	Riding, R
作者单位	1.Univ Wales Coll Cardiff, Dept Earth Sci, Cardiff CF1 3YE, S Glam, Wales 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Mu, XA,Riding, R. Skeletal ultrastructure of the calcified red alga Galaxaura oblongata, Hainan Island, China[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,1999,104(3-4):205-212.
APA	Mu, XA,&Riding, R.(1999).Skeletal ultrastructure of the calcified red alga Galaxaura oblongata, Hainan Island, China.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,104(3-4),205-212.
MLA	Mu, XA,et al."Skeletal ultrastructure of the calcified red alga Galaxaura oblongata, Hainan Island, China".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 104.3-4(1999):205-212.