title: Identification of novel miRNAs and miRNA expression profiling in wheat hybrid necrosis.
abstract: MicroRNAs (miRNAs) play essential roles in a vast array of biological processes, including growth and development, defense against viral infection, and responses to environmental changes in plant. Wheat hybrid necrosis is an interesting genetic phenomenon observed frequency and it is lethal or semi lethal, resulting in gradual death or loss of productivity. However, the molecular basis and mechanisms associated with hybrid necrosis in wheat are still not well understood. Here, we report the population and expression profiles of miRNAs in wheat hybrid necrosis. We identified a total of 57 conserved miRNA families as well as 182 putative novel miRNAs. Expression profiling revealed that expression of 49 known miRNAs and 165 novel miRNAs was changed in hybrid necrosis. And the expression levels of some miRNAs and their predicated targets have been confirmed by qRT-PCR. These results indicate that these miRNAs, especially miR159, miR166, miR167 and miR5072 could be involved in the extensive regulation of gene expression in response to hybrid necrosis.
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Zhou
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Meiqi
authors.initials: M
authors.lastname: Yin
authors.affiliation: Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China.
authors.forename: Ennian
authors.initials: E
authors.lastname: Yang
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Wenping
authors.initials: W
authors.lastname: Gong
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Liu
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Xuelian
authors.initials: X
authors.lastname: Zheng
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Kejun
authors.initials: K
authors.lastname: Deng
authors.affiliation: State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
authors.forename: Zhenglong
authors.initials: Z
authors.lastname: Ren
authors.affiliation: School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D020869:Gene Expression Profiling; D035683:MicroRNAs / Q000235:genetics*; D010935:Plant Diseases / Q000235:genetics*; D014908:Triticum / Q000235:genetics*
chemical_list: D035683:MicroRNAs