Nitric oxide promotes light-initiated seed germination by repressing PIF1 expression and stabilizing HFR1

文献类型： 外文期刊

第一作者： Li, Ruijing

作者： Li, Ruijing;Jia, Yujie;Yang, Wenjuan;Chen, Zhen;Hu, Xiangyang;Yu, Lijuan;Chen, Haiying

作者机构：

关键词： HFR1;NO;PIF1;Seeds germination

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN： 0981-9428

年卷期： 2018 年 123 卷

页码：

收录情况： SCI

摘要： Seed germination is a crucial stage in the life cycle of plants and is tightly controlled by internal and external signals. Phytochrome photoreceptors perceive light stimulation to promote seed germination. Previous studies have shown that PHYTOCHROME-INTERACTION FACTOR 1 (PIF1) is a negative regulatory factor and represses seed germination, while LONG HYPOCOTYL IN FAR-RED (HFR1) sequesters PIF1 by forming a heterodimer to relieve the inhibitory effect of seed germination during the initial phase. Nitric oxide (NO) has been reported to break seed dormancy, but the underlying mechanism is not well understood. Here, we report that NO signal enhances phytochrome B (PHYB)-dependent seed germination, and PHYB perceives red light stimulation to activate NR activity and NO accumulation. NO signal not only downregulates the transcription of PIF1, but also stabilize HFR1 proteins to intensify the interaction of the HFR1-PIF1 heterodimer, and compensate for the inhibitory effect of PIF1 on its target genes associated with hormone metabolism and cell wall loosening, consequently initiating seed germination. Thus, our results reveal a new mechanism for NO signals in modulating PHYB-mediated seed germination by repressing PIF1 expression at the transcriptional level as well as preventing PIF1 activity by stabilizing HFR1 protein.

分类号：

  • 相关文献

[1]Isolation of an anti-tumor polysaccharide from Auricularia polytricha (Jew's ear) and its effects on macrophage activation. Qing, Yuan,Yang, Zhirong,Zheng, Linyong,Zheng, Linyong,Yu, Mengyao,Xu, Xiaoyan,Qing, Yuan,Luo, Xia.

[2]Koumine Attenuates Lipopolysaccaride-Stimulated Inflammation in RAW264.7 Macrophages, Coincidentally Associated with Inhibition of NF-kappa B, ERK and p38 Pathways. Wu, Jing,Sun, Zhiliang,Yuan, Zhihang,Wu, Jing,Sun, Zhiliang,Matias, Froilan Bernard,Liang, Zengenni. 2016

[3]In Vitro Antioxidant and Anti-Inflammatory Activities of Protocatechualdehyde Isolated from Phellinus gilvus. Chang, Zhi-Qiang,Gebru, Elias,Rhee, Man-Hee,Park, Seung-Chun,Chang, Zhi-Qiang,Lee, Sam-Pin,Kim, Jong-Choon,Cheng, Henrique. 2011

[4]Supplementation of pre-weaning diet with L-arginine has carry-over effect to improve intestinal development in young piglets. Yang, X. F.,Jiang, Z. Y.,Gong, Y. L.,Zheng, C. T.,Hu, Y. J.,Wang, L.,Huang, L.,Ma, X. Y.,Yang, X. F.,Jiang, Z. Y.,Gong, Y. L.,Zheng, C. T.,Hu, Y. J.,Wang, L.,Huang, L.,Ma, X. Y.,Yang, X. F.,Jiang, Z. Y.,Gong, Y. L.,Zheng, C. T.,Hu, Y. J.,Wang, L.,Huang, L.,Ma, X. Y.,Yang, X. F.,Jiang, Z. Y.,Gong, Y. L.,Zheng, C. T.,Hu, Y. J.,Wang, L.,Huang, L.,Ma, X. Y..

[5]The behavior of the manganese-cerium loaded metal-organic framework in elemental mercury and NO removal from flue gas. Zhang, Xiao,Shen, Boxiong,Zhang, Xiaoqi,Si, Meng,Yuan, Peng,Zhang, Xiao,Shen, Feng.

[6]Effects of 1-Methylcyclopropene on NO Content, NOS Activity, and H2O2 Content in Postharvest Suli Pears. Dong Yu,Liu Li-qin,Guan Jun-feng,Dong Yu,Liu Li-qin. 2011

[7]Involvement of NO and ROS in sulfur dioxide induced guard cells apoptosis in Tagetes erecta. Wei, Aili,Zhai, Xiaoyan,Zhang, Xiaobing,Fu, Baocun,Wang, Yunshan,Zhang, Chao,Cao, Dongmei,Xin, Xiaojing.

[8]Chinese herbal medicinal ingredients affect secretion of NO, IL-10, ICAM-1 and IL-2 by endothelial cells. Hu, Yiyi,He, Kongwang,Zhu, Haodan,Hu, Yiyi,He, Kongwang,Zhu, Haodan.

作者其他论文 更多>>

微信小程序