tailieunhanh - Wide crossing diversify mitogenomes of rice

In most angiosperms, the inheritance of the mitochondria takes place in a typical maternal manner. However, very less information is available about if the existence of structural variations or not in mitochondrial genomes (mitogenomes) between maternal parents and their progenies. | Yang et al. BMC Plant Biology 2020 20 159 https s12870-020-02380-w RESEARCH ARTICLE Open Access Wide crossing diversify mitogenomes of A. J Check foi . updates rice Weilong Yang Jianing Zou Jiajia Wang Nengwu Li Xiaoyun Luo Xiaofen Jiang and Shaoqing Li Abstract Background In most angiosperms the inheritance of the mitochondria takes place in a typical maternal manner. However very less information is available about if the existence of structural variations or not in mitochondrial genomes mitogenomes between maternal parents and their progenies. Results In order to find the answer a stable rice backcross inbred line BIL population was derived from the crosses of Oryza glaberrima Oryza sativa Oryza sativa. The current study presents a comparative analysis of the mitogenomes between maternal parents and five BILs. There were recorded universal structural variations such as reversal translocation fusion and fission among the BILs. The repeat-mediated recombination and non-homologous end-joining contributed virtually equal to the rearrangement of mitogenomes. Similarly the relative order copynumber expression level and RNA-editing rate of mitochondrial genes were also extensively varied among BILs. Conclusions These novel findings unraveled an unusual mystery of the maternal inheritance and possible cause for heterogeneity of mitogenomes in rice population. The current piece of work will greatly develop our understanding of the plant nucleo-cytoplasmic interaction and their potential role in plant growth and developmental processes. Keywords Mitochondria Rice Genomic rearrangement Maternal inheritance Nucleo-cytoplasmic interaction Background A coordinated nucleo-cytoplasmic interaction plays a crucial role in the plant development 1 2 . However inter- or intraspecies hybridization in plants may lead to the reshuffling of the nuclear genome and eventually might disturb the equilibrium of cytonuclear interactions. Therefore maintenance of a coordinated