Sponge Cytogenetics — Mitotic Chromosomes of Ten Species of Freshwater Sponge
スポンサーリンク
概要
- 論文の詳細を見る
Porifera (sponges) are the most basal phylum of extant metazoans. To gain insight into sponge genome construction, cytogenetic analysis was performed for ten freshwater sponge species of six genera, using conventional Giemsa staining, chromosome banding, and fluorescence in-situ hybridization. The karyotypes were very similar among the ten species, exhibiting a diploid chromosome number of 2n=46 or 48, and usually consisted of microchromosomes with one or two pairs of large chromosomes. The 18S-28S rRNA genes were localized to a single pair of microchromosomes in two Ephydatia species. Hybridization signals of the telomere (TTAGGG)n sequences were observed at the ends of metaphase chromosomes. The genome sizes of Ephydatia fluviatilis and Ephydatia muelleri were estimated by flow cytometric analysis as about 0.7 pg per diploid complement. These freshwater sponge species appear to represent a fairly homogeneous group with respect to karyotypes.
- Zoological Society of Japanの論文
著者
-
Ishijima Junko
Lab. Animal Cytogenet. Creat. Res. Initiatit. "sousei" Hokkaido Univ.
-
Matsuda Yoichi
Grad. Sch. Life Sci. Hokkaido Univ.:lab. Anim. Cytogenet. Div. Genome Dyn. Creative Res. Initiative
-
Matsuda Yoichi
Cent. Adv. Sci. Tech. Hokkaido Univ.:grad. Sch. Environ. Earth Sci. Hokkaido Univ.:fac. Sci. Hokkaid
-
Matsuda Yoichi
Lab. Mol. Cell. Genet. Dept. Biol. Sci. Grad. Sch. Sci.:lab. Animal Cytogenet. Dept. Genome Dyn. Cre
-
Matsuda Yoichi
Grad. Sch. Life Sci. Hokkaido Univ.:lab. Anim. Cytogenet. Div. Genome Dyn. Creative Res. Initiative
-
Matsuda Yoichi
Laboratory Of Cytogenetics Division Of Bioscience Graduate School Of Environmental Earth Science Hok
-
Iwabe Naoyuki
Laboratory of Animal Cytogenetics, Division of Genome Dynamics, Creative Research Initiative "Sousei", Hokkaido University
関連論文
- The molecular basis of chromosome orthologies and sex chromosomal differentiation in palaeognathous birds
- Comparison of the Z and W sex chromosomal architectures in elegant crested tinamou (Eudromia elegans) and ostrich (Struthio camelus) and the process of sex chromosome differentiation in palaeognathous birds.
- Highly conserved linkage homology between birds and turtles: Bird and turtle chromosomes are precise counterparts of each other
- O-17. A study on gene dosage compensation of Z chromosome in chicken(Abstracts of the 52nd Annual Meeting of the Society of Chromosome Research)
- Promoter Activity and Chromosomal Location of the Rana rugosa P450 Aromatase (CYP19) Gene(Reproductive Biology)
- O-08. Structure and evolution of centromere-specific repetitive DNA sequences in birds(Abstracts for the oral and the poster presentations,Abstracts of the Joint Meeting: the 58th Annual Meeting of the Society of Chromosome Research and the 17th Annual Me
- O-10. Karyotypic analysis of two blind snake species (Scolecophidia) and the process of karyotypic changes in Serpentes(Abstracts for the oral and the poster presentations,Abstracts of the Joint Meeting: the 58th Annual Meeting of the Society of Chromosom
- Evidence for different origin of sex chromosomes in snakes, birds, and mammals and step-wise differentiation of snake sex chromosomes.
- A novel family of repetitive DNA sequences amplified site-specifically on the W chromosomes in Neognathous birds.
- O-09. Evolution of karyotypes and centromere-specific repetitive DNA sequences in the Falconiformes(Abstracts of the oral and poster presentations)
- O-08. Comparison of the origin of sex chromosomes in snakes, birds and mammals, and delineation of the process of sex chromosome-differentiation in snakes(Abstracts of the oral and poster presentations)
- O-12. A novel repetitive DNA sequence that compose the W chromosome-specific heterochromatin of elegant crested tinamou (Eudromia elegans)(Abstracts of the oral and poster presentations, Abstract of the 56th Annual Meeting of The Society of Chromosome Res
- O-11. Molecular cytogenetic study on karyotypic evolution in the order Falconiformes(Abstracts of the oral and poster presentations, Abstract of the 56th Annual Meeting of The Society of Chromosome Research)
- O-16. Molecular cytogenetic analysis of site-specific highly repetitive DNA sequences in the subfamily Cricetinae(Abstracts of the oral and poster presentations, Abstracts of the 54th Annual Meeting of the Society of Chromosome Research)
- O-15. Molecular cloning and characterization of centromeric highly repetitive DNA sequences in the Strigiformes species(Abstracts of the oral and poster presentations, Abstracts of the 54th Annual Meeting of the Society of Chromosome Research)
- O-13. Construction of comparative cytogenetic maps among human, chicken and reptiles with EST clones(Abstracts of the oral and poster presentations, Abstracts of the 54th Annual Meeting of the Society of Chromosome Research)
- O-08. Molecular characterization and chromosomal distribution of site-specific highly repetitive DNA sequences isolated from Syrian hamster (Mesocricetus auratus)(Abstracts of the oral and poster presentations)(The 53rd Annual Meeting of the Society of Ch
- O-07. Cloning and characterization of highly repetitive DNA sequences in avian and reptilian species(Abstracts of the oral and poster presentations)(The 53rd Annual Meeting of the Society of Chromosome Research)
- Comparative cytogenetic studies on chromosome organization of birds and reptiles(Symposium : Current development and perspective on chromosome banding techniques)(The 53rd Annual Meeting of the Society of Chromosome Research)
- O-16. Comparative chromosome study between chicken and Guinea fowl by FISH(Abstracts of the 52nd Annual Meeting of the Society of Chromosome Research)
- O-15. Comparative analysis of bird karyotypes by Zoo FISH with chicken chromosome painting probes(Abstracts of the 52nd Annual Meeting of the Society of Chromosome Research)
- cDNA-based gene mapping and GC3 profiling in the soft-shelled turtle suggest a chromosomal size-dependent GC bias shared by sauropsids
- O-01. Establishment of FISH mapping system of functional cDNA clones for two planarian species(Abstracts of the oral and poster presentations)
- Transition of Genomic GC-content and Karyotype Evolution in Vertebrates(Joint Symposium of the Society of Chromosome Research and the Chromosome Colloquium : "Dynamics of genome and chromosomes-aspects from gene expression to evolution-",Abstracts of the
- Nuclear reorganization during dedifferentiation of differentiated cells(Joint Symposium of the Society of Chromosome Research and the Chromosome Colloquium : "Dynamics of genome and chromosomes-aspects from gene expression to evolution-",Abstracts of the
- O-12. Establishment of FISH mapping system for genome analysis of newt(Abstracts of the oral and poster presentations, Abstracts of the 54th Annual Meeting of the Society of Chromosome Research)
- O-13. Expression analysis of the M33 gene in the Amami spiny rat(Abstracts for the oral and the poster presentations,Abstracts of the Joint Meeting: the 58th Annual Meeting of the Society of Chromosome Research and the 17th Annual Meeting of the Chromosom
- O-15. Increase in the copy number of the M33 gene of Ryukyu spiny rat(Abstracts of the oral and poster presentations)
- O-14. Chromosomal localization of mammalian Y-linked genes in X0/X0 mammal, Ryukyu spiny rat(Abstracts of the oral and poster presentations)
- O-13. Centromere repositioning in X chromosome of X0/X0 mammals, Ryukyu spiny rat(Abstracts of the oral and poster presentations)
- O-24. Detection of chromosomal differences between female and male Amami spiny rat, XO(Abstracts of the oral and poster presentations, Abstract of the 56th Annual Meeting of The Society of Chromosome Research)
- O-07. Search of sex determination gene in Amami spiny rat, XO(Abstracts of the oral and poster presentations, Abstract of the 56th Annual Meeting of The Society of Chromosome Research)
- O-07. Comparative cytogenetic study on the origin and differentiation of sex chromosomes of reptiles. II. The origin and differentiation of sex chromosomes of the gekkonid lizard (Gekko hokouensis)(Abstracts of the oral and poster presentations)
- Chromosome homology between mouse and three Muridae species, Millardia meltada, Acomys dimidiatus and Micromys minutus, and conserved chromosome segments in murid karyotypes
- Comparative chromosome painting map between two Ryukyu spiny rat species, Tokudaia osimensis and Tokudaia tokunoshimensis (Muridae, Rodentia)
- O-12. Karyotypic evolution and the ancestral karyotype of the Muridae inferred from comparative chromosome painting(Abstracts of the oral and poster presentations)
- O-23. Conserved chromosome synteny and the karyotype of the common ancestor inferred from comparative chromosome painting in the Murinae(Abstracts of the oral and poster presentations, Abstract of the 56th Annual Meeting of The Society of Chromosome Resea
- O-01. Sponge cytogenetics : The mitotic chromosomes of ten species of freshwater sponge(Abstracts for the oral and the poster presentations,Abstracts of the Joint Meeting: the 58th Annual Meeting of the Society of Chromosome Research and the 17th Annual M
- P-07. Conserved repetitive DNA sequences in the kW1 genomic region of ratite W chromosomes(Abstracts of the oral and poster presentations)
- Karyotypic Evolution of Apodemus (Muridae, Rodentia) Inferred from Comparative FISH Analyses
- Identification of chromosome rearrangements between the laboratory mouse (Mus musculus) and the Indian spiny mouse (Mus platythrix) by comparative FISH analysis
- O-10. Comparative cytogenetic study on the origin and differentiation of sex chromosomes in reptiles(Abstracts of the oral and poster presentations, Abstract of the 56th Annual Meeting of The Society of Chromosome Research)
- Mouse N-Acetylgalatosamine 4-Sulfotransferases-1 and -2. Molecular Cloning, Expression, Chromosomal Mapping and Detection of Their Activity with GalNAcβ1-4GlcNAcβ1-octyl
- Molecular Cloning, Expression, and Chromosomal Mapping of Human Chondroitin 4-Sulfotransferase, Whose Expression Pattern In Human Tissues Is Different from That of Chondroitin 6-Sulfotransferase^1
- O-14. Molecular cytogenetic studies on chromosome evolution in the Galliformes(Abstracts of the oral and poster presentations, Abstracts of the 54th Annual Meeting of the Society of Chromosome Research)
- O-17. Gene dosage compensation of birds(Abstracts of the oral and poster presentations, Abstracts of the 54th Annual Meeting of the Society of Chromosome Research)
- Characterization of chromosome structures of Falconinae (Falconidae, Falconiformes, Aves) by chromosome painting and delineation of chromosome rearrangements during their differentiation
- O-21. Evolution of sex chromosomes in ratite birds(Abstracts of the oral and poster presentations,Abstracts of the 55th Annual Meeting of the Society of Chromosome Research)
- O-06. A study on chromosome evolution in Japanese quail, Chinese painted quail and California quail by comparative FISH analysis(Abstracts of the oral and poster presentations)(The 53rd Annual Meeting of the Society of Chromosome Research)
- O-09. Molecular and cytogenetic characterization of centromeric heterochromatin of the Siamese crocodile (Crocodylus siamensis) and their origin and evolution(Abstracts for the oral and the poster presentations,Abstracts of the Joint Meeting: the 58th Ann
- Sponge Cytogenetics — Mitotic Chromosomes of Ten Species of Freshwater Sponge
- Isolation of Ef silicatein and Ef lectin as molecular markers for sclerocytes and cells involved in innate immunity in the freshwater sponge Ephydatia fluviatilis