Core cis-element variation confers subgenome-biased expression of a transcription factor that functions in cotton fiber elongation.
Core cis-element variation confers subgenome-biased expression of a transcription factor that functions in cotton fiber elongation.
复制标题
DOI:
10.1111/nph.15063
复制
发表时间:
2018-05
期刊:
影响因子:
--
通讯作者:
Chen XY
中科院分区:
文献类型:
--
作者:
Zhao B;Cao JF;Hu GJ;Chen ZW;Wang LY;Shangguan XX;Wang LJ;Mao YB;Zhang TZ;Wendel JF;Chen XY
Cotton cultivars have evolved to produce extensive, long, seed‐born fibers important for the textile industry, but we know little about the molecular mechanism underlying spinnable fiber formation. Here, we report how PACLOBUTRAZOL RESISTANCE 1 (PRE1) in cotton, which encodes a basic helix‐loop‐helix (bHLH) transcription factor, is a target gene of spinnable fiber evolution. Differential expression of homoeologous genes in polyploids is thought to be important to plant adaptation and novel phenotypes. PRE1 expression is specific to cotton fiber cells, upregulated during their rapid elongation stage and A‐homoeologous biased in allotetraploid cultivars. Transgenic studies demonstrated that PRE1 is a positive regulator of fiber elongation. We determined that the natural variation of the canonical TATA‐box, a regulatory element commonly found in many eukaryotic core promoters, is necessary for subgenome‐biased PRE1 expression, representing a mechanism underlying the selection of homoeologous genes. Thus, variations in the promoter of the cell elongation regulator gene PRE1 have contributed to spinnable fiber formation in cotton. Overexpression of GhPRE1 in transgenic cotton yields longer fibers with improved quality parameters, indicating that this bHLH gene is useful for improving cotton fiber quality.
登录
查看更多内容
影响因子:
3.3
作者:
Gong L;Kakrana A;Arikit S;Meyers BC;Wendel JF
通讯作者:
Wendel JF
影响因子:
4.5
作者:
Lemmon ZH;Bukowski R;Sun Q;Doebley JF
通讯作者:
Doebley JF
影响因子:
46.9
作者:
Li, Fuguang;Fan, Guangyi;Yu, Shuxun
通讯作者:
Yu, Shuxun
影响因子:
1
作者:
Gallagher, Joseph P.;Grover, Corrinne E.;Wendel, Jonathan F.
通讯作者:
Wendel, Jonathan F.
影响因子:
4.4
作者:
Flagel LE;Wendel JF;Udall JA
通讯作者:
Udall JA