ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2003
Behaviour of ring bivalents in holokinetic systems: alternative sites of spindle attachment in Pachylis argentinus and Nezara viridula (Heteroptera).
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 54 citations in OpenAlex.
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- New cytogenetic data for three species of Pentatomidae (Heteroptera):Comparative cytogenetics · 2020Article
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- Karyotype diversity and chromosomal organization of repetitive DNA in Tityus obscurus (Scorpiones, Buthidae).BMC genetics · 2017Article
- Chromosomal evolutionary dynamics of four multigene families in Coreidae and Pentatomidae (Heteroptera) true bugs.Molecular genetics and genomics : MGG · 2016Article
- Restructuring of Holocentric Centromeres During Meiosis in the Plant Rhynchospora pubera.Genetics · 2016Article
- Holocentromere identity: from the typical mitotic linear structure to the great plasticity of meiotic holocentromeres.Chromosoma · 2016Review
- Alternative meiotic chromatid segregation in the holocentric plant Luzula elegans.Nature communications · 2014Article
- Karyotype diversity among predatory Reduviidae (Heteroptera).Comparative cytogenetics · 2014Article
- Meiotic chromosome analysis of the giant water bug, Lethocerus indicus.Journal of insect science (Online) · 2013Article
- Article
- The significance of cytogenetics for the study of karyotype evolution and taxonomy of water bugs (Heteroptera, Belostomatidae) native to Argentina.Comparative cytogenetics · 2013Article
- Karyotypes, male meiosis and comparative FISH mapping of 18S ribosomal DNA and telomeric (TTAGG) n repeat in eight species of true bugs (Hemiptera, Heteroptera).Comparative cytogenetics · 2011Article
- Male meiosis, heterochromatin characterization and chromosomal location of rDNA in Microtomus lunifer (Berg, 1900) (Hemiptera: Reduviidae: Hammacerinae).Comparative cytogenetics · 2011Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Heteropteran chromosomes are holokinetic; during mitosis, sister chromatids segregate parallel to each other but, during meiosis, kinetic activity is restricted to one pair of telomeric regions. This meiotic behaviour has been corroborated for all rod bivalents. For ring bivalents, we have previously proposed that one of the two chiasmata releases first, and a telokinetic activity is also achieved. In the present work we analyse the meiotic behaviour of ring bivalents in Pachylis argentinus (Coreidae) and Nezara viridula (Pentatomidae) and we describe for the first time the chromosome complement and male meiosis of the former (2n = 12 + 2m + X0, pre-reduction of the X). Both species possess a large chromosome pair with a secondary constriction which is a nucleolus organizer region as revealed by in-situ hybridization. Here we propose a new mode of segregation for ring bivalents: when the chromosome pair bears a secondary constriction, it is not essential that one of the chiasmata releases first since these regions or repetitive DNA sequences adjacent to them become functional as alternative sites for microtubule attachment and they undertake chromosome segregation to the poles during anaphase I.
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