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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 30, No. 2, 2009, pp. 137-143
Bioline Code: zr09022
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 30, No. 2, 2009, pp. 137-143

 en Developmental Expression of an Amphioxus ( Branchiostoma belcheri check for this species in other resources ) Gene Encoding a GATA Transcription Factor
Zhang, Yu-jun & Mao, Bing-yu

Abstract

GATA factors are evolutionarily conserved and play crucial roles during embryonic development in both vertebrates and invertebrates. Vertebrate GATAs can be divided into two subgroups, the GATA1/2/3 and the GATA4/5/6 classes. Through genomic analysis, we have identified three GATA factors, representing the GATA1/2/3 and GATA4/5/6 subfamilies respectively, and one GATA like protein in the genome of the basal chordate amphioxus ( Branchiostoma floridae check for this species in other resources , cephalochordata). Partial sequence of GATA123 in the amphioxus Branchiostoma belcheri check for this species in other resources (BbGATA123) was cloned and its expression pattern during early embryonic development was studied. Expression of BbGATA123 is first detected in the mesendoderm during gastrulation. Interestingly, in the late neurula and early larva stages, it is expressed strongly in the cerebral vesicle and the mid gut region. Its expression is compared to Otx, a gene known crucial for the development of anterior structures. Our observations suggest that GATA123, together with Otx, might play an important role in the development of amphioxus cerebral vesicle, the counterpart of the vertebrate brain.

Keywords
GATA factors Expression pattern Amphioxus Branchiostoma belcheri

 
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