W-box and G-box elements play important roles in early senescence of rice flag leaf

doi:10.1038/srep20881

	W-box and G-box elements play important roles in early senescence of rice flag leaf
	Liu, Li1,2 ; Xu, Wei1,2 ; Hu, Xuesong 3; Liu, Haoju 4,5,6; Lin, Yongjun 5,6
	2016-02-11
发表期刊	SCIENTIFIC REPORTS
卷号	6
摘要	Plant 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.
DOI	10.1038/srep20881
收录类别	SCI
语种	英语
WOS记录号	WOS:000369922500002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/25962
专题	资源植物与生物技术所级重点实验室
作者单位	1.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
推荐引用方式 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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