請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/50347
標題: OSTF1: A HD-GL2 family homeobox gene is developmentally regulated during early embryogenesis in rice
作者: Yang, J.Y.
呂維茗
Chung, M.C.
Tu, C.Y.
Leu, W.M.
關鍵字: embryogenesis
HD-GL2
homeobox
in situ hybridization
rice
embryonic pattern-formation
layer-specific gene
arabidopsis-thaliana
hd-zip
protein
expression
meristem
domain
evolution
root
期刊/報告no:: Plant and Cell Physiology, Volume 43, Issue 6, Page(s) 628-638.
摘要: In many eukaryotic organisms, homeobox genes are important regulators that specify the cell fate and body plan in early embryogenesis. In this study, a gene designated OSTF1 (Oryza sativa transcription factor 1) encoding a homeodomain protein in rice was isolated and characterized. The encoded OSTF1, although sharing only approximately 51% sequence identity with other RD-GL2 members, contains four characteristic motifs (an N-terminal acidic region, a homeodomain, a truncated leucine zipper, and a START domain). OSTF1 was detected as a single copy gene in rice. The transcripts were absent in young panicle or mature spikelet before anthesis, but appeared very early in the pollinated grain with a transient profile. In vegetative tissues examined, expression was only detectable in root. In situ hybridization analysis on developing grains revealed that OSTF1 was strongly and uniformly expressed in the embryo at the globular stage and preferentially localized to the protoderm at 3-6 d after pollination. Expression was also detectable in the integument and throughout the endosperm. Although OSTF1 is not closely related to the remaining HD-GL2 members in sequences, this gene exhibits an analogous epidermis-p referential expression pattern.
URI: http://hdl.handle.net/11455/50347
ISSN: 0032-0781
文章連結: http://dx.doi.org/10.1093/pcp/pcf076
顯示於類別:生物科技學研究所

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