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How dynamic could be the 45S rDNA cistron? An intriguing variability in a grasshopper species revealed by integration of chromosomal and genomic data
(Springer Verlag Berlín, 2019-05)
To better understand the structure and variability of the 45S rDNA cistron and its evolutionary dynamics in grasshoppers, we performed a detailed analysis combining classical and molecular cytogenetic data with whole-genome ...
Allotetraploid evolution in Dactylorhiza (Orchidaceae)Allotetraploid evolution in Dactylorhiza (Orchidaceae)
(Universidad de Costa Rica, 2015)
Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
(Springer Tokyo, 2015-10)
Notolathyrus is a section of South American endemic species of the genus Lathyrus. The origin, phylogenetic relationship and delimitation of some species are still controversial. The present study provides an exhaustive ...
Male meiosis, heterochromatin characterization and chromosomal location of rDNA in Microtomus lunifer (Berg, 1900) (Hemiptera: Reduviidae: Hammacerinae)
(Pensoft Publishers, 2011-05)
In the present work, we analysed the male meiosis, the content and distribution of heterochromatin and the number and location of nucleolus organizing regions in Microtomus lunifer (Berg, 1900) by means of standard technique, ...
Relation between variation in copy number of ribosomal RNA encoding genes and size of harbouring chromosomes in Leishmania of subgenus Viannia
(Elsevier, 1998)
Chromosomal size polymorphism in Leishmania of subgenus Viannia has been correlated with eco-geography. The sizes of chromosomes bearing rDNA genes were determined in 69 isolates. A considerable size-variation was observed, ...
Structural alignment of 18S and 28S rDNA sequences provides insights into phylogeny of Phytophaga (Coleoptera: Curculionoidea and Chrysomeloidea)
(Wiley Blackwell Publishing, Inc, 2009-01-01)
We performed a comparative study of partial rDNA sequences from a variety of Coleoptera taxa to construct an annotated alignment based on secondary structure information, which in turn, provides improved rRNA structure ...
Hosts, distribution and genetic divergence (16S rDNA) of Amblyomma dubitatum (Acari: Ixodidae)
(Springer, 2010-08)
We supply information about hosts and distribution of Amblyomma dubitatum. In addition, we carry out an analysis of genetic divergence among specimens of A. dubitatum from different localities and with respect to other ...
Morphological and molecular data on a new species of Plagiorhynchus Lühe, 1911 (Acanthocephala: Plagiorhynchidae) from the long-billed curlew (Numenius americanus) from northern Mexico
(Cambridge University Press, 2019-07)
A new species of the genus Plagiorhynchus Lühe, 1911 from the intestine of the long-billed curlew Numenius americanus from northern Mexico is described. Plagiorhynchus Plagiorhynchus aznari n. Sp. Is morphologically ...
Highly GC-rich heterochromatin in chili peppers (Capsicum-Solanaceae): A cytogenetic and molecular characterization
(Elsevier Science, 2018-08)
Capsicum comprises 35 species of chili peppers and five of them are cultivated worldwide as spices or vegetables. Diploid karyotypes based in x = 12 and x = 13 are common in Capsicum and the constitutive heterochromatin ...