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W-box and G-box elements play important roles in early senescence of rice flag leaf
Liu, Li1,2; Xu, Wei1,2; Hu, Xuesong3; Liu, Haoju4,5,6; Lin, Yongjun5,6
2016-02-11
Source PublicationSCIENTIFIC REPORTS
Volume6
AbstractPlant cis-elements play important roles in global regulation of gene expression. Based on microarray data from rice flag leaves during early senescence, we identified W-box and G-box cis-elements as positive regulators of senescence in the important rice variety Minghui 63. Both cis-elements were bound by leaf senescence-specific proteins in vitro and influenced senescence in vivo. Furthermore, combination of the two elements drove enhanced expression during leaf senescence, and copy numbers of the cis-elements significantly affected the levels of expression. The W-box is the cognate cis-element for WRKY proteins, while the G-box is the cognate cis-element for bZIP, bHLH and NAC proteins. Consistent with this, WRKY, bZIP, bHLH and NAC family members were overrepresented among transcription factor genes up-regulated according during senescence. Crosstalk between ABA, CTK, BR, auxin, GA and JA during senescence was uncovered by comparing expression patterns of senescence up-regulated transcription factors. Together, our results indicate that hormone-mediated signaling could converge on leaf senescence at the transcriptional level through W-box and G-box elements. Considering that there are very few documented early senescence-related cis-elements, our results significantly contribute to understanding the regulation of flag leaf senescence and provide prioritized targets for stay-green trait improvement.
DOI10.1038/srep20881
Indexed BySCI
Language英语
WOS IDWOS:000369922500002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/25962
Collection资源植物与生物技术所级重点实验室
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650201, Peoples R China
2.Yunnan Key Lab Wild Plant Resources, Kunming 650201, Peoples R China
3.Peking Univ, Peking Tsinghua Ctr Life Sci, Coll Life Sci, Beijing 100871, Peoples R China
4.Jiangxi Agr Univ, Dept Biosci & Bioengn, Nanchang 330045, Peoples R China
5.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China
6.Huazhong Agr Univ, Natl Ctr Plant Gene Res, Wuhan 430070, Peoples R China
Recommended Citation
GB/T 7714
Liu, Li,Xu, Wei,Hu, Xuesong,et al. W-box and G-box elements play important roles in early senescence of rice flag leaf[J]. SCIENTIFIC REPORTS,2016,6.
APA Liu, Li,Xu, Wei,Hu, Xuesong,Liu, Haoju,&Lin, Yongjun.(2016).W-box and G-box elements play important roles in early senescence of rice flag leaf.SCIENTIFIC REPORTS,6.
MLA Liu, Li,et al."W-box and G-box elements play important roles in early senescence of rice flag leaf".SCIENTIFIC REPORTS 6(2016).
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