Analysis of a B chromosome undergoing tissue-type specific elimination during embryogenesis of Aegilops speltoides

特定DNA的程序性消除是发育程序的一部分，与某些真核生物产生不同的种系和体细胞基因组有关。DNA消除的一个关键问题是染色体是如何选择性地丢失的。本项目旨在研究野生小麦Aegilops speltoides胚胎发育过程中多余B染色体的组织型特异性消除过程，并分析这种自私染色体的起源。在本种中，B染色体在根中不存在，但在同一个体的地上组织中存在。

Programmed elimination of specific DNA is part of the developmental program, associated with the generation of distinct germline and somatic genomes in some eukaryotes. A key question in DNA elimination is how chromosomes are selectively lost. The project aims to investigate the processes of tissue-type-specific elimination of supernumerary B chromosomes during the development of the wild wheat Aegilops speltoides embryos and to analyse the origin of this selfish chromosome. In this species the B chromosomes are absent in the roots but present in the aerial tissue of the same individual.