ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2016
Cytomolecular characterization and origin of de novo formed maize B chromosome variants.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 10 citations in OpenAlex.
- The maize B chromosome shapes the transcriptome throughout the entire plant life cycle.Journal of experimental botany · 2025Article
- Effect of aneuploidy of a non-essential chromosome on gene expression in maize.The Plant journal : for cell and molecular biology · 2022Article
- Comprehending the dynamism of B chromosomes in their journey towards becoming unselfish.Frontiers in cell and developmental biology · 2022Review
- The r-X1 deletion induces terminal deficiencies in the maize B chromosome.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2021Article
- The supernumerary B chromosome of maize: drive and genomic conflict.Open biology · 2021Article
- Novel B-chromosome-specific transcriptionally active sequences are present throughout the maize B chromosome.Molecular genetics and genomics : MGG · 2020Article
- Analysis of B chromosome nondisjunction induced by the r-X1 deficiency in maize.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2018Article
- The origin of B chromosomes in yellow-necked mice (Apodemus flavicollis)-Break rules but keep playing the game.PloS one · 2017Article
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
B chromosomes are dispensable elements that occur in many species, including maize. The maize B chromosome is acrocentric and highly heterochromatic and undergoes nondisjunction during the second pollen mitosis. In this study, we determined the genetic behavior and organization of two naturally occurring B chromosome variants (designated B(ta) and B(tb)). The morphology and genetic behavior of the B(ta) chromosome were similar to those of the typical B chromosome, but the B(ta) chromosome contained a deletion in the first heterochromatin region and had higher transmission frequencies through both male and female parents. The B(tb) chromosome was reduced in size, consisted primarily of heterochromatin, and had a lower transmission frequency. The B(tb) chromosome lacked nondisjunctional behavior, which was restored by the presence of normal B chromosomes in the cell. Furthermore, the B(tb) chromosome contained two centromeric regions, only one of which was active. The organization of these two naturally occurring B chromosome variants was also determined using fluorescence in situ hybridization with B-associated sequences and by amplification of B-specific molecular markers to create possible evolutionary models.
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