Transcription factor families inferred from genome sequences of photosynthetic stramenopiles.
New Phytol
; 188(1): 52-66, 2010 Oct.
Article
en En
| MEDLINE
| ID: mdl-20646219
ABSTRACT
⢠By comparative analyses we identify lineage-specific diversity in transcription factors (TFs) from stramenopile (or heterokont) genome sequences. We compared a pennate (Phaeodactylum tricornutum) and a centric diatom (Thalassiosira pseudonana) with those of other stramenopiles (oomycetes, Pelagophyceae, and Phaeophyceae (Ectocarpus siliculosus)) as well as to that of Emiliania huxleyi, a haptophyte that is evolutionarily related to the stramenopiles. ⢠We provide a detailed description of diatom TF complements and report numerous peculiarities in both diatoms, the heat shock factor (HSF) family is overamplified and constitutes the most abundant class of TFs; Myb and C2H2-type zinc finger TFs are the two most abundant TF families encoded in all the other stramenopile genomes investigated; the presence of diatom and lineage-specific gene fusions, in particular a class of putative photoreceptors with light-sensitive Per-Arnt-Sim (PAS) and DNA-binding (basic-leucine zipper, bZIP) domains and an HSF-AP2 domain fusion. ⢠Expression data analysis shows that many of the TFs studied are transcribed and may be involved in specific responses to environmental stimuli. ⢠Evolutionary and functional relevance of these observations are discussed.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fotosíntesis
/
Factores de Transcripción
/
Familia de Multigenes
/
Genoma
/
Estramenopilos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
New Phytol
Asunto de la revista:
BOTANICA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Francia