Long interspersed elements in three species of Gracilaria (Gracilariaceae, Rhodophyta)

LI Yuhui; YAO Jianting; GAO Tianxiang; DUAN Delin

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Long interspersed elements in three species of Gracilaria (Gracilariaceae, Rhodophyta)

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In order to find out whether long interspersed elements (LINEs) existed in macro-algae genomes or not, we tested the LINE homologues in representative families (species): Gracilaria (G.eucheumoides Harv., G. tenuistipitata Chang et Xia, and G. textorii (Sur) De-Toni), Laminaria (L. longissima Miyabe and L. japonica Aresch.), and Ulva (U. lactuca L. and U. pertusa Kjellm.) during 2004 to 2005. Polymerase Chain Reaction (PCR) was carried out with degenerate oligonucleotide primers designed from LINEs of rice homologues and Cin 4 of maize. Cloning and nucleotide sequencing of the PCR products revealed that 4 clones that derived from 3 species of Gracilaria have LINE homologues. The nucleotide sequences of the 4 LINE homologues diverged greatly, but the amino acid sequences deduced from them were relatively conserved. The endonuclease regions of the LINE homologues greatly diverged from that of other plants, but they had closer phylogenetic relationship to Zepp elements in Chlorella sp., which indicated that sequence divergence by vertical transmission has been a major influence on the evolution of algal LINEs.

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《中国海洋湖沼学报（英文版）》 |2007年第1期|59-66|共8页
作者
LI Yuhui; YAO Jianting; GAO Tianxiang; DUAN Delin;
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作者单位

Department of Aquaculture, Ocean University of China, Qingdao 266003, China;

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;

Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;

Department of Aquaculture, Ocean University of China, Qingdao 266003, China;

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;

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原文格式 PDF
正文语种 chi
中图分类海洋学;
关键词
Endonuclease gene; long interspersed element (LINE); phylogeny; Gracilaria; Gracilariaceae; Rhodophyta;

机译：核酸内切酶基因;长穿插元件（LINE）;系统发育;禾本科;禾本科;红景天;

Long interspersed elements in three species of Gracilaria (Gracilariaceae, Rhodophyta)

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