Blastomeres derived from the vegetal pole provide extra-embryonic nutrition to sturgeon (Acipenser) embryos: Transition from holoblastic to meroblastic cleavage

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652036%3A_____%2F22%3A00556615" target="_blank" >RIV/86652036:_____/22:00556615 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12520/22:43904435

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0044848622000138?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0044848622000138?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2022.737899" target="_blank" >10.1016/j.aquaculture.2022.737899</a>

Result language

angličtina

Original language name

Blastomeres derived from the vegetal pole provide extra-embryonic nutrition to sturgeon (Acipenser) embryos: Transition from holoblastic to meroblastic cleavage

Original language description

Generally, holoblastic cleavage in embryos (as in amphibians) in which all blastomeres contribute to one of the germ layers, are preserved as a stem lineage of vertebrates, and meroblastic cleavage has evolved independently in each vertebrate lineage. The increasing egg size: yolk volume is the key factor for transition from holoblastic to meroblastic cleavage patterns. Sturgeon (Acipenser) eggs are two times larger than those of the African clawed frog Xenopus laevis (amphibian), despite the varying size, sturgeon embryos retain nearly the same developmental characteristics as X. laevis. Comparatively, the fate of blastomeres derived from the vegetal pole (VP) of a sturgeon embryo is unspecified. Thus, the goal of this study was to determine whether the VP of the embryo contributes to embryonic development, or is simply extra-embryonic. This may also reveal whether the transition of the cleavage pattern (holoblastic to meroblastic) in the actinopterygian lineage is correlated with the egg size: yolk volume. Here, we found that sturgeon vegetal blastomeres formed only primordial germ cells, and the rest were made up of cellular yolk (yolk cells, YCs). Morphological and phenotypic characteristics revealed that after the 1 k-cell / mid-blastula transition, YCs became transcriptionally inactive and served only to provide nutrition to larvae as they developed. Furthermore, inhibition of vegetal blastomeres revealed that sturgeon can utilize their yolk in an acellular form, similar to teleosts, implying that meroblastic cleavage in the actinopterygians, like teleosts, might have evolved by the fusion of the vegetal blastomeres.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Aquaculture

ISSN

0044-8486

e-ISSN

1873-5622

Volume of the periodical

551

Issue of the periodical within the volume

MAR 30 2022

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

737899

UT code for WoS article

000773652600004

EID of the result in the Scopus database

2-s2.0-85123284517