Recognizing Plant Physiology authors: Jishan Jiang
Jishan Jiang, first author of Retrograde induction of phyB orchestrates ethylene-auxin hierarchy to regulate growth
Current Position: Candidate for a tenure track faculty position, college of Grassland Science and Technology at China Agricultural University, Beijing, China
Education: Ph.D; Forage Genetics, Breeding and Seed Sciences at Chinese academy of Agricultural Sciences
Non-scientific Interests: hiking, camping and drawing
Brief bio: My long term interest in plants’ ability to survive in harsh conditions led me to join the Dehesh lab at UC Davis as a visiting Ph. D student. During this period I learned about and was fascinated by how a mutant accumulating large quantities of a stress-specific retrograde signaling metabolite can sense and transmit stress signal. Towards understanding of the signal transduction pathway, I performed a genetic screen and identified phytochrome B (phyB) as a component of the pathway. Here in this paper I established that MEcPP-mediated induction of phyB abundance leads to modulation of auxin and ethylene levels for optimal adaptive responses to ever-changing light environment. This convergence of light and hormonal singling through MEcPP-mediated actions positions the plastidial function at the center of adaptive response.
I am currently working toward the establishment of my own research group at the China Agricultural University, aiming to address the two following goals:
1: Identification of the key components involved in survival rate of Medicago Sativa over winter.
2: Characterization of cytosol- to -nucleus translocational machinery of phyB.
姓名：姜霁珊
现任职位：中国农业大学，草业科学与技术学院，教授
教育经历：中国农业科学院牧草遗传育种与种子科学专业博士
非学术兴趣：徒步，露营，绘画
个人简介：植物如何在恶劣环境中生存是我一直以来感兴趣的问题，这也促使我在博士期间加入加州大学戴维斯分校Dehesh实验室开展相关研究。在此期间，逆境条件下可以快速积累特异性逆行信号代谢物的突变体引起了我的兴趣，为了研究该突变是如何感知和传递逆境信号，我筛选了大量的突变体，并首次证明植物光敏色素B（phyB）参与该信号传导途径。在本研究中，我们发现MEcPP可以通过诱导phyB蛋白丰度调节植物体内生长素和乙烯水平，使植物可以更好的适应不断变化的光环境。通过MEcPP介导，光和激素的这种相互作用使质体功能在植物适应性生长中起到核心作用。我目前正在中国农业大学组建自己的科研团队，研究方向为：
1：发掘决定紫花苜蓿越冬性的关键基因并揭示其具体的调控机制。
2：phyB由细胞质到细胞核转运的分子机制。
