Mapping 5S ribosomal DNA on somatic chromosomes of four species of Ceratozamia and Stangeria eriopus (Cycadales)

Autor:	Goro Kokubugata, Katsuhiko Kondo, Andrew P. Vovides
Rok vydání:	2004
Předmět:	Genetics biology Ceratozamia norstogii Stangeria Karyotype Plant Science biology.organism_classification Ceratozamia kuesteriana Ceratozamia mexicana Botany Ceratozamia hildae Ribosomal DNA Ecology Evolution Behavior and Systematics Ceratozamia
Zdroj:	Botanical Journal of the Linnean Society. 145:499-504
ISSN:	1095-8339 0024-4074
DOI:	10.1111/j.1095-8339.2004.00299.x
Popis:	Somatic chromosomes of four species of Ceratozamia, C. hildae, C. kuesteriana, C. mexicana and C. norstogii, and Stangeria eriopus, were observed and compared by the fluorescence in situ hybridization method using 5S ribosomal (rDNA) probes. The four Ceratozamia species and S. eriopus showed the same chromosome number of 2n = 16, and had similar karyotypes, comprising 12 metacentric (m), two submetacentric (sm) chromosomes and two telocentric (t) chromosomes. The four Ceratozamia species exhibited a proximal 5S rDNA site in the interstitial region of two m chromosomes. Stangeria eriopus exhibited a distal 5S rDNA site in the interstitial region of two m chromosomes, which probably indicates that the two genera differ in chromosome structure by at least one paracentric inversion. © 2004 The Linnean Society of London, Botanical Journal of the Linnean Society, 2004, 145, 499–504.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b9bf2e9882e54b226c243075c773e3f3 https://doi.org/10.1111/j.1095-8339.2004.00299.x Zobrazit plný text záznamu Plný text ve formátu PDF