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Furrow Formation in the Vegetal Hemisphere of Xenopus Eggs
Author(s) -
Kubota Tomoyuki,
Sakamoto Masahiko
Publication year - 1993
Publication title -
development, growth and differentiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.864
H-Index - 66
eISSN - 1440-169X
pISSN - 0012-1592
DOI - 10.1111/j.1440-169x.1993.00403.x
Subject(s) - xenopus , amphibian , cleavage (geology) , cleavage furrow , equator , biology , southern hemisphere , microtubule , anatomy , microbiology and biotechnology , geology , ecology , paleontology , cytokinesis , cell division , genetics , latitude , geodesy , fracture (geology) , gene , cell
The mechanism of furrow formation in the vegetal hemisphere of amphibian eggs was studied using Xenopus eggs. Injection of colchicine into the eggs after the furrow tip had entered the vegetal hemisphere arrested the subsequent cleavage. The effect of impairing the continuity between the animal and vegetal hemispheres was examined by squeezing the equator of uncleaved eggs from both sides with the edges of coverslips. On gentle squeezing a shallow vegetal furrow was formed at the first cleavage, whereas on strong squeezing furrowing was arrested at the equator. The mechanism of furrow formation in the vegetal hemisphere of amphibian eggs is discussed on the basis of these findings.