Insight into the B3Transcription Factor Superfamily and Expression Profiling of B3 Genes in Axillary Buds after Topping in Tobacco (Nicotiana tabacum L.)
文献类型： 外文期刊
作者： Xia, Fei 1 ; Sun, Tingting 3 ; Yang, Shuangjuan 5 ; Wang, Xiao 1 ; Chao, Jiangtao 1 ; Li, Xiaoxu 1 ; Hu, Junhua 1 ; Cui, 1 ;
作者机构： 1.Chinese Acad Agr Sci, Tobacco Res Inst, Qingdao 266101, Peoples R China
2.State Tobacco Monopoly Adm, Key Lab Tobacco Gene Resources, Qingdao 266101, Peoples R China
3.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China
4.Chinese Acad Agr Sci, China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China
5.Henan Acad Agr Sci, Inst Hort, Zhengzhou 450002, Henan, Peoples R China
关键词： transcription factor; B3 superfamily; genome analysis; expression patterns; axillary buds
期刊名称：GENES （ 影响因子：4.096； 五年影响因子：4.339 ）
ISSN： 2073-4425
年卷期： 2019 年 10 卷 2 期
页码：
收录情况： SCI
摘要： Members of the plant-specific B3 transcription factor superfamily play important roles in various growth and developmental processes in plants. Even though there are many valuable studies on B3 genes in other species, little is known about the B3 superfamily in tobacco. We identified 114 B3 proteins from tobacco using comparative genome analysis. These proteins were classified into four subfamilies based on their phylogenetic relationships, and include the ARF, RAV, LAV, and REM subfamilies. The chromosomal locations, gene structures, conserved protein motifs, and sub-cellular localizations of the tobacco B3 proteins were analyzed. The patterns of exon-intron numbers and arrangement and the protein structures of the tobacco B3 proteins were in general agreement with their phylogenetic relationships. The expression patterns of 114 B3 genes revealed that many B3 genes show tissue-specific expression. The expression levels of B3 genes in axillary buds after topping showed that the REM genes are mainly up-regulated in response to topping, while the ARF genes are down-regulated after topping.
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