Talk to your neighbors in an emergency: Stromule-mediated chloroplast-nucleus communication in plant immunity

Curr Opin Plant Biol. 2024 Apr 10;79:102529. doi: 10.1016/j.pbi.2024.102529. Online ahead of print.ABSTRACTHypersensitive response-programmed cell death (HR-PCD) is a response mounted by plants to defend themselves against pathogens. Communication between the chloroplast and the nucleus is critical for the progression of HR-PCD. Tubular protrusions of chloroplasts, known as stromules, are tightly associated with the HR-PCD progression. There is emerging evidence that signaling molecules originating from chloroplasts are transferred to the nucleus through stromules. The translocation of signaling molecules from the chloroplast to the nucleus might trigger defense responses, including transcriptional reprogramming. In this review, we discuss the possible functions of stromules in the rapid transfer of signaling molecules in the chloroplast-nucleus communication.PMID:38604000 | DOI:10.1016/j.pbi.2024.102529
Source: Current Opinion in Plant Biology - Category: Biology Authors: Source Type: research