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Expression patterns indicate that BMP2/4 and Chordin, not BMP5-8 and Gremlin, mediate dorsal-ventral patterning in the mollusk Crassostrea gigas
Tan, Sujian1,2; Huan, Pin1; Liu, Baozhong1,3
2017-03-01
发表期刊DEVELOPMENT GENES AND EVOLUTION
卷号227期号:2页码:75-84
文章类型Article
摘要Though several bilaterian animals use a conserved BMP2/4-Chordin antagonism to pattern the dorsal-ventral (DV) axis, the only lophotrochozoan species in which early DV patterning has been studied to date, the leech Helobdella robusta, appears to employ BMP5-8 and Gremlin. These findings call into question the conservation of a common DV patterning mechanism among bilaterian animals. To explore whether the unusual DV patterning mechanism in H. robusta is also used in other lophotrochozoan species, we investigated the expression of orthologous genes in the early embryo of a bivalve mollusk, Crassostrea gigas. Searching of the genome and phylogenetic analysis revealed that C. gigas possesses single orthologs of BMP2/4, Chordin, and BMP5-8 and no Gremlin homolog. Whole mount in situ hybridization revealed mRNA localization of BMP2/4 and Chordin on the opposite sides of embryos, suggesting the potential involvement of a BMP2/4-Chordin antagonism in DV patterning in this species. Furthermore, universal BMP5-8 expression and the absence of a Gremlin homolog in the C. gigas genome called into question any major contribution by BMP5-8 and Gremlin to early DV patterning in this species. Additionally, we identified seven genes showing asymmetric expression along the DV axis, providing further insight into DV patterning in C. gigas. We present the first report of a Chordin gene in a lophotrochozoan species and of the opposite expression of BMP2/4 (dorsal) and Chordin (ventral) along the D/V axis of a lophotrochozoan embryo. The findings of this study further the knowledge of axis formation in lophotrochozoan species and provide insight into the evolution of the animal DV patterning mechanism.
关键词Axis Bmp2/4 Chordin Dorsal-ventral Mollusk
DOI10.1007/s00427-016-0570-3
收录类别SCI
语种英语
WOS记录号WOS:000396117400001
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文献类型期刊论文
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条目标识符http://ir.qdio.ac.cn/handle/337002/136741
专题实验海洋生物学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266000, Peoples R China
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Tan, Sujian,Huan, Pin,Liu, Baozhong. Expression patterns indicate that BMP2/4 and Chordin, not BMP5-8 and Gremlin, mediate dorsal-ventral patterning in the mollusk Crassostrea gigas[J]. DEVELOPMENT GENES AND EVOLUTION,2017,227(2):75-84.
APA Tan, Sujian,Huan, Pin,&Liu, Baozhong.(2017).Expression patterns indicate that BMP2/4 and Chordin, not BMP5-8 and Gremlin, mediate dorsal-ventral patterning in the mollusk Crassostrea gigas.DEVELOPMENT GENES AND EVOLUTION,227(2),75-84.
MLA Tan, Sujian,et al."Expression patterns indicate that BMP2/4 and Chordin, not BMP5-8 and Gremlin, mediate dorsal-ventral patterning in the mollusk Crassostrea gigas".DEVELOPMENT GENES AND EVOLUTION 227.2(2017):75-84.
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