当前位置： SCI文献检索 > DEVELOPMENTAL BIOLOGY期刊下所有文献 > Embryonic expression profiles and conserved localization mechanisms of pem/postplasmic mRNAs of two species of ascidian, Ciona intestinalis and Ciona savignyi.

Embryonic expression profiles and conserved localization mechanisms of pem/postplasmic mRNAs of two species of ascidian, Ciona intestinalis and Ciona savignyi.

Abstract：

:In many animals, the first cue for development is transcripts and/or proteins that are provided maternally and are localized at specific regions of fertilized eggs and early embryos. The ascidian is known to exhibit a mosaic mode of development, which is largely dependent on localized maternal factors. In early Ciona intestinalis embryos, the posterior-most localization appears to be the major specialized pattern of maternal transcripts. The present study examined the temporal and spatial expression pattern of 40 genes known as pem/postplasmic genes, for which maternal mRNAs are localized at the posterior-most region during early Ciona embryogenesis. Ten of these genes showed redistribution to B8.12-line cells, which are known to give rise to germ cells in ascidians. In addition 23 orthologues were newly identified in a related ascidian species, Ciona savignyi, and 16 of them showed the mRNA localization pattern at the posterior-most region. Furthermore, the localized pattern of exogenous mRNA, which comprised the 3' UTR of C. intestinalis pem/postplasmic genes conjugated with the LacZ ORF, showed the localization at the posterior-most region in C. savignyi embryos. Likewise, the 3' UTR of C. savignyi pem/postplasmic genes conjugated with the LacZ ORF showed localization at the posterior most region in C. intestinalis embryos, suggesting that localization mechanisms are conserved between the two species. The present study therefore provides basic information for future functional analyses of these pem/postplasmic genes and for exploring the mechanisms of localization of mRNAs.

journal_name

Dev Biol

journal_title

Developmental biology

authors

Yamada L

doi

10.1016/j.ydbio.2006.05.018

subject

Has Abstract

pub_date

2006-08-15 00:00:00

pages

524-36

issue

2

eissn

0012-1606

issn

1095-564X

pii

S0012-1606(06)00806-2

journal_volume

296

pub_type

杂志文章

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