Poster
Seungmee Jung
University of Wyoming
Laramie, Wyoming, United States
Jongchan Woo
University of Wyoming
Laramie, Wyoming, United States
Mather A. Khan
University of Missouri
Columbia, Missouri, United States
David G. Mendoza Cozatl
University of Missouri
Columbia, Missouri, United States
Eunsook Park
Assisitant Professor
University of Wyoming
Laramie, Wyoming, United States
Organelle communication within a plant cell is essential for the effective exchange signals that regulate acclimation under stress conditions. Chloroplasts serve as a major site for the production of defense-related molecules and communicate with other organelles through stromules during immune responses. While little is known about the transfer of molecules from chloroplasts to the nucleus during these responses, it is believed that retrograde signaling facilitates inter-organelle communication. Although some communication pathways have been identified, the specific signals exchanged between chloroplasts and the nucleus remain largely unexplored. Here, we investigate the translocation of proteins from the chloroplast to the nucleus during immune responses. The chloroplast-localized protein NADPH-dependent thioredoxin reductase C (NTRC) is translocated to the nucleus via stromules under immune response. Furthermore, in vivo interaction studies reveal that NTRC interacts with several transcription factors, promoting the immune response. These findings suggest a novel mechanism of NTRC in regulating immune responses, highlighting its role in chloroplast-nucleus communication.