Jing Peng: The Plant Cell First Author

Jing Peng, first author of “COP1 positively regulates ABA signaling during Arabidopsis seedling growth in darkness by mediating ABA-induced ABI5 accumulation”

Current Position: Postdoc, China Agricultural University

Education: B.S. (2016) from Shanxi Agricultural University; Ph.D. (2022) from China Agricultural University

Non-scientific Interests: Travelling, Watching movies

Brief bio: I have had the strong interest in plants since childhood. After completing my undergraduate study in 2016, I was fortunate to join Prof. Jigang Li’s lab as a Ph.D. student to study plant biology. Prof. Li’s lab is interested in how plants respond to abiotic stresses according to their light conditions. ABA is a plant hormone that plays important roles in plant adaptation to abiotic stresses, and my Ph.D. project aimed to elucidate how COP1, a central repressor of photomorphogenesis, regulates ABA signaling in darkness. Our study showed that COP1 positively regulates ABA signaling during Arabidopsis seedling growth in darkness. Further analyses demonstrated that COP1 mediates ABA induction of ABI5 accumulation through transcriptional and post-translational regulatory mechanisms. Interestingly, our data indicate that plants are more resistant to ABA in the light than in the dark, demonstrating that plants adjust their ABA signaling mechanisms according to their light environment. This is an unforgettable research experience for me.

 

姓名：彭晶

目前职位：中国农业大学博士后

教育经历：2016年获得山西农业大学理学学士学位；2022年获得中国农业大学理学博士学位

兴趣爱好：旅行，看电影

个人简介：

我从小就对植物有着浓厚的兴趣。2016年本科毕业后，我十分荣幸进入中国农业大学生物学院李继刚教授实验室进行博士研究生的学习。李老师实验室的研究方向是光如何调控植物对逆境的响应，而ABA是植物应对各种逆境胁迫非常重要的激素，因此我的博士课题是研究光形态建成的核心负调控因子COP1如何在黑暗下调控植物的ABA信号转导途径。我们的研究发现，COP1通过转录和翻译后水平的双重调控机制，介导ABA对ABI5的诱导，从而在黑暗下的幼苗生长阶段正调控ABA信号途径。有意思的是，我们的结果显示光下生长的植物比黑暗下具有更强的ABA耐受性，表明植物会根据环境中的光信号调整其内源ABA信号途径。这是我终生难忘的一段研究经历。