Recognizing Plant Cell first author: Xiaoying Li

Xiaoying Li, first author of ETR1/RDO3 Regulates Seed Dormancy by Relieving the Inhibitory Effect of the ERF12-TPL Complex on DELAY OF GERMINATION1 Expression

Current Position: Postdoctoral fellow, Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China

Education: PhD in Plant Molecular Physiology (2010-2016), Institute of Botany, Chinese Academy of Sciences, Beijing, China

Non-scientific Interests: Photography, drawing and badminton

Brief bio: During my undergraduate study, I developed a great interest in plant science. My graduation thesis was cytological analysis of Sparganium stoloniferum on systematic classification. During my master study, my work was focused on the identification mechanism of pollen-stigma of distant hybrid sterility in Lilium. In 2010, I got the honor to study for a doctor’s degree in Dr. Yongxiu Liu ‘s group, and carried out the research on the regulation mechanism of seed dormancy. From then, I really come to do the research related to plant molecular genetics which I prefer. I confirmed that the non-dormant mutant rdo3 was caused by a mutation in ethylene receptor ETR1 through the map-based cloning. ERF12, which is an ethylene response factor, was up-regulated in rdo3, and genetic analysis indicated that ERF12 negatively regulated seed dormancy downstream of ETR1. ERF12 could recruit the transcriptional co-repressor TOPLESS to the promoter of DOG1 to inhibit the expression of DOG1, and further regulated seed dormancy. Thus, I identified a dormancy pathway ETR1-ERF12/TPL-DOG1 and provided a mechanistic insight on the regulation of seed dormancy by linking the ethylene and DOG1 pathways, which has important theoretical guiding significance for the optimal breeding in agriculture.


教育经历: 2010-2016 中国科学院植物研究所 植物分子生理学 理学博士