Sex determination in the silkworm, Bombyx mori: A female determinant on the W chromosome and the sex-determining gene cascade

2007 ◽  
Vol 18 (3) ◽  
pp. 379-388 ◽  
Author(s):  
Tsuguru Fujii ◽  
Toru Shimada
Keyword(s):  
Sex Determination ◽  
Bombyx Mori ◽  
W Chromosome ◽  
Female Determinant ◽  
Silkworm Bombyx Mori

Novel non-autonomous transposable elements on W chromosome of the silkworm, Bombyx mori

2010 ◽  
Vol 89 (3) ◽  
pp. 375-387 ◽  
Author(s):  
Hiroaki Abe ◽  
Tsuguru Fujii ◽  
Toru Shimada ◽  
Kazuei Mita
Keyword(s):  
Transposable Elements ◽  
Bombyx Mori ◽  
W Chromosome ◽  
Silkworm Bombyx Mori

scholarly journals Nucleotide Sequence of the Random Amplified Polymorphic DNA (RAPD) on the W Chromosome of the Silkworm, Bombyx mori (Lepidoptera: Bombycidae)

1996 ◽  
Vol 31 (4) ◽  
pp. 633-637 ◽  
Author(s):  
Hiroaki ABE ◽  
Toru SHIMADA ◽  
Shinya KAWAI ◽  
Fumi OHBAYASHI ◽  
Tae HARADA ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Bombyx Mori ◽  
Random Amplified Polymorphic Dna ◽  
W Chromosome ◽  
Silkworm Bombyx Mori

scholarly journals Identification of the key stages for sex determination in the silkworm, Bombyx mori

2013 ◽  
Vol 224 (2) ◽  
pp. 119-123 ◽  
Author(s):  
Hiroki Sakai ◽  
Fugaku Aoki ◽  
Masataka G. Suzuki
Keyword(s):  
Sex Determination ◽  
Bombyx Mori ◽  
Silkworm Bombyx Mori

Partial deletions of the W chromosome due to reciprocal translocation in the silkworm Bombyx mori

2005 ◽  
Vol 14 (4) ◽  
pp. 339-352 ◽  
Author(s):  
H. Abe ◽  
M. Seki ◽  
F. Ohbayashi ◽  
N. Tanaka ◽  
J. Yamashita ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Reciprocal Translocation ◽  
W Chromosome ◽  
Silkworm Bombyx Mori

scholarly journals Molecular structure of the copia-like retrotransposable element Yokozuna on the W chromosome of the silkworm, Bombyx mori.

1998 ◽  
Vol 73 (6) ◽  
pp. 345-352 ◽  
Author(s):  
Fumi Ohbayashi ◽  
Toru Shimada ◽  
Toshiyuki Sugasaki ◽  
Shinya Kawai ◽  
Kazuei Mita ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Bombyx Mori ◽  
W Chromosome ◽  
Retrotransposable Element ◽  
Silkworm Bombyx Mori

Recent transposition of yabusame, a novel piggyBac-like transposable element in the genome of the silkworm, Bombyx mori

Genome ◽  
2010 ◽  
Vol 53 (8) ◽  
pp. 585-593 ◽  
Author(s):  
Takaaki Daimon ◽  
Masao Mitsuhiro ◽  
Susumu Katsuma ◽  
Hiroaki Abe ◽  
Kazuei Mita ◽  
...  
Keyword(s):  
Amino Acid ◽  
Bombyx Mori ◽  
Amino Acid Identity ◽  
Chromosome 21 ◽  
W Chromosome ◽  
Transposition Activity ◽  
Dna Transposon ◽  
Silkworm Genome ◽  
Silkworm Bombyx Mori

On the W chromosome of the silkworm, Bombyx mori , we found a novel piggyBac-like DNA transposon that potentially encodes an intact transposase (610 amino acid residues), which is flanked by 16-bp perfect inverted terminal repeats and a duplicated TTAA target site. Interestingly, we also identified another intact copy of this transposon on an autosome (chromosome 21), which showed 99.6% identity in the DNA sequence of the transposase (99.3% amino acid identity). These features raised the possibility that this novel piggyBac-like DNA transposon, designated as yabusame, may retain transposition activity. Here we report the identification and characterization of yabusame transposons from the silkworm. We cloned the full length of the yabusame transposon on the W chromosome (yabusame-W) and its autosomal copy (yabusame-1). Southern blot analysis showed that there are interstrain polymorphisms in yabusame elements for their insertion sites and copy number. We also found strong evidence for the recent transposition of yabusame elements in the silkworm genome. Although our in vitro excision assays suggested that the transposition activity of yabusame-1 and yabusame-W has been lost almost entirely, our data will lead to a greater understanding of the characteristics of piggyBac superfamily elements.

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