.... immigrans oskar rescues the body patterning and pole cell defects of embryos from D. melanogaster oskar - mothers,and converts the morphology of the polar granules to that of D. immigrans . The nuclear bodies, which are structures that appear to be closely related to polar granules, are also converted...

... is a component of polar granules, large particles associated with the pole plasm and the germline precursor pole cells of the embryo. aubergine mutants fail to translate oskar mRNA efficiently and are thus defective in posterior body patterning and pole cell formation. We have found that Aubergine protein...

...Masanori Mukai; Maki Kashikawa; Satoru Kobayashi In many animal groups, the interaction between germ and somatic line is required for germ-line development. In Drosophila , the germ-line precursors (pole cells) formed at the posterior tip of the embryos migrate toward the mesodermal layer where...

...Satoru Kobayashi; Tomiichiro Kitamura; Hitoshi Sasaki; Masukichi Okada ABSTRACT In Drosophila , it has been postulated that the third intron of the P-element is spliced only in germ-line cells. To test whether this postulate is applicable to pole cells, the progenitor cells of germ line, we carried...

... in the posterior pole region in early cleavage embryos, whereas the spatial distribution of mitochondria in an embryo was uniform throughout cleavage stages. In late cleavage stages, the dye showed very weak and uniform accumulation in all regions of periplasm. Polar plasm, sequestered in pole cells, restored...

...Satoru Kobayashi; Masukichi Okada ABSTRACT Screening a cDNA library generated from poly(A) + RNA of Drosophila cleavage embryos, we selected a cDNA clone (pDE20.6). The cDNA hybridized specifically with a poly(A) + RNA that is capable of restoring embryos from u.v.-caused inability of pole cell...