Nitrogen regulates CRY1 phosphorylation and circadian clock input pathways

被引：6

作者：

Zhou, Yang-Hong ^{[1
]}

Zhang, Zhong-Wei ^{[1
]}

Zheng, Chong ^{[2
]}

Yuan, Shu ^{[1
,2
]}

He, Yikun ^{[2
]}

机构：

[1] Sichuan Agr Univ, Coll Resources Sci & Technol, Chengdu, Peoples R China

[2] Capital Normal Univ, Coll Life Sci, Beijing, Peoples R China

来源：

PLANT SIGNALING & BEHAVIOR | 2016年 / 11卷 / 09期

关键词：

Adenosine monophosphate-activated protein kinase; circadian clock; cryptochrome; 1; nitrate reductase; nitrogen-regulated flowering; ARABIDOPSIS-THALIANA; IN-VIVO; INHIBITION; SUGAR;

D O I：

10.1080/15592324.2016.1219830

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The delayed flowering phenotype caused by nitrogen (N) fertilizer application has been known for a long time, but we know little about the specific molecular mechanism for this phenomenon before. Our study indicated that low nitrogen increases the NADPH/NADPC and ATP/AMP ratios which affect adenosine monophosphate-activated protein kinase (AMPK) activity and phosphorylation and abundance of nuclear CRY1 protein. Then CRY1 acts in the N signal input pathway to the circadian clock. Here we further discuss: (1) the role of C/N ratio in flowering, (2) circadian oscillation of plant AMPK transcripts and proteins, (3) conservation of nutrition-mediated CRY1 phosphorylation and degradation, and (4) crosstalks between nitrogen signals and nitric oxide (NO) signals in flowering.

引用

页数：3

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