Supernumerary B chromosomes of Aegilops speltoides undergo precise elimination in roots early in embryo development

B chromosomes are supernumerary chromosomes exhibiting dramatic differences between different organs in same species. Here, the authors show programmed B chromosome elimination in goatgrass starts at the onset of embryo differentiation by nondisjunction of chromatids, anaphase lagging, and ends with...

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Main Authors: Alevtina Ruban, Thomas Schmutzer, Dan D. Wu, Joerg Fuchs, Anastassia Boudichevskaia, Myroslava Rubtsova, Klaus Pistrick, Michael Melzer, Axel Himmelbach, Veit Schubert, Uwe Scholz, Andreas Houben
Format: article
Language:EN
Published: Nature Portfolio 2020
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Online Access:https://doaj.org/article/8d75cf9235494bcc879942775e12430f
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Summary:B chromosomes are supernumerary chromosomes exhibiting dramatic differences between different organs in same species. Here, the authors show programmed B chromosome elimination in goatgrass starts at the onset of embryo differentiation by nondisjunction of chromatids, anaphase lagging, and ends with the degradation of micronucleated DNA.