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1. Identification of different cytoplasms based on newly developed mitotype-specific markers for marker-assisted selection breeding in cultivated Brassica napus | |||
HENG Shuangping,CHEN Fengyi,YANG Zonghui,HU Kaining,WEI Chao,WEN Jing,YI Bing,MA Chaozhi,TU Jinxing,SI Ping,FU Tingdong,SHEN Jinxiong | |||
Agronomy 30 September 2015 | |||
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Abstract:Mitotype-specific markers have been developed in order to distinguish among different mitotypes in plant. Here, we comparatively analyzed six sequenced mitochondrial genomes that are studied in Brassica napus and identified the collinear blocks and mitotype-specific sequences (MSSs) of these mitochondrial genomes. The collinear relationship between mitochondrial genomes of nap, cam, and pol cytoplasmic male sterility (CMS) lines were higher than those of other lines. After comparative analysis of the six sequenced mitochondrial genomes (cam, nap, ole, pol CMS, ogu CMS, and hau CMS), 90 MSSs with sizes ranging from 101 to 9981 bp and a total length of 103,756 bp (accounting for 6.77% of the mitochondrial genome sequences) were identified. Additionally, 12 mitotype-specific markers were developed based on the mitochondrial genome specific sequences in order to distinguish among these different mitotypes. Cytoplasms of 570 different inbred lines collected from various scientific research institutes in China were identified using the MSS markers developed in our study. In addition to confirming the accuracy of the cytoplasmic identification, we also identified mitotypes that have not been reported in Brassica napus. Our study may provide guidance for the classification of different mitotypes in B. napus breeding. | |||
TO cite this article:HENG Shuangping,CHEN Fengyi,YANG Zonghui, et al. Identification of different cytoplasms based on newly developed mitotype-specific markers for marker-assisted selection breeding in cultivated Brassica napus[OL].[30 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4656522 |
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