The Fate of Arabidopsis thaliana Homeologous CNSs and Their Motifs in the Paleohexaploid Brassica rapa
文献类型: 外文期刊
第一作者: Subramaniam, Sabarinath
作者: Subramaniam, Sabarinath;Freeling, Michael;Wang, Xiaowu;Pires, J. Chris
作者机构:
关键词: conserved noncoding sequence;CNS;fractionation;mutagenesis;deletion;G-box;PIL5;Arabidopsis;Brassica rapa
期刊名称:GENOME BIOLOGY AND EVOLUTION ( 影响因子:3.416; 五年影响因子:4.079 )
ISSN: 1759-6653
年卷期: 2013 年 5 卷 4 期
页码:
收录情况: SCI
摘要: Following polyploidy, duplicate genes are often deleted, and if they are not, then duplicate regulatory regions are sometimes lost. By what mechanism is this loss and what is the chance that such a loss removes function? To explore these questions, we followed individual Arabidopsis thaliana-A. thaliana conserved noncoding sequences (CNSs) into the Brassica ancestor, through a paleohexaploidy and into Brassica rapa. Thus, a single Brassicaceae CNS has six potential orthologous positions in B. rapa; a single Arabidopsis CNS has three potential homeologous positions. We reasoned that a CNS, if present on a singlet Brassica gene, would be unlikely to lose function compared with a more redundant CNS, and this is the case. Redundant CNSs go nondetectable often. Using this logic, each mechanism of CNS loss was assigned a metric of functionality. By definition, proved deletions do not function as sequence. Our results indicated that CNSs that go nondetectable by base substitution or large insertion are almost certainly still functional (redundancy does not matter much to their detectability frequency), whereas those lost by inferred deletion or indels are approximately 75% likely to be nonfunctional. Overall, an average nondetectable, once-redundant CNS more than 30 bp in length has a 72% chance of being nonfunctional, and that makes sense because 97% of them sort to a molecular mechanism with "deletion" in its description, but base substitutions do cause loss. Similarly, proved-functional G-boxes go undetectable by deletion 82% of the time. Fractionation mutagenesis is a procedure that uses polyploidy as a mutagenic agent to genetically alter RNA expression profiles, and then to construct testable hypotheses as to the function of the lost regulatory site. We show fractionation mutagenesis to be a "deletion machine" in the Brassica lineage.
分类号:
- 相关文献
作者其他论文 更多>>
-
Development of self-compatible Chinese cabbage lines of Chiifu through marker-assisted selection
作者:Chang, Lichun;Liang, Jianli;Cai, Xu;Zhang, Li;Li, Yufang;Wu, Jian;Wang, Xiaowu
关键词:Chinese cabbage; self-incompatibility; MLPK; HRM (High-Resolution Melting); MAS (Marker-Assisted Selection)
-
BL-Hi-C reveals the 3D genome structure of Brassica crops with high sensitivity
作者:Zhang, Lupeng;Zhao, Ranze;Liang, Jianli;Cai, Xu;Zhang, Lei;Guo, Huiling;Zhang, Zhicheng;Wu, Jian;Wang, Xiaowu
关键词:
-
Insights into spinach domestication from genome sequences of two wild spinach progenitors, Spinacia turkestanica and Spinacia tetrandra
作者:She, Hongbing;Liu, Zhiyuan;Xu, Zhaosheng;Zhang, Helong;Wu, Jian;Wang, Xiaowu;Cheng, Feng;Qian, Wei;Charlesworth, Deborah
关键词:bottlenecks; domestication; evolution; pericentromeric region; wild spinach relatives
-
Characterization and evaluation of the morphological attributes of Ethiopian mustard (Brassica carinata A. Braun) landraces
作者:Abraha, Rahiel Hagos;Liang, Jianli;Wu, Jian;Lin, Runmao;Wang, Xiaowu;Abraha, Rahiel Hagos;Shaibu, Abdulwahab S.
关键词:Characterization; Ethiopian mustard; Evaluation; Landraces; Morphological attributes; Seasons
-
BrERF109 positively regulates the tolerances of drought and salt stress in Chinese cabbage
作者:Li, Chao;Cui, Jian;Zeng, Qi;Zhang, Ruixing;Bai, Xue;Sun, Qingguo;Chen, Lin;Li, Baohua;Wang, Xiaowu;Chen, Lin;Shen, Yongrui
关键词:BrERF109; Chinese cabbage; Drought stress; Salt stress; Virus-induced gene silencing
-
Effect of microbial inoculation on nitrogen transformation, nitrogen functional genes, and bacterial community during cotton straw composting
作者:Zhou, Liuyan;Xie, Yuqing;Wang, Xiaowu;Wang, Zhifang;Yang, Xinping;Sa, Renna;Li, Pengbing
关键词:Nitrogen conversion; Biocontrol; Functional metabolism; Coexistence pattern; Agricultural waste
-
Physiological and transcriptome analyses of Chinese cabbage in response to drought stress
作者:Chen, Lin;Li, Chao;Zhang, Jiahao;Li, Zongrui;Zeng, Qi;Sun, Qingguo;Zhao, Limin;Zhang, Lugang;Li, Baohua;Wang, Xiaowu
关键词:Chinese cabbage; drought stress; abscisic acid; weighted gene co-expression network analysis; glucosinolate