Spatial chloroplast-to-nucleus signalling involving plastid-nuclear complexes and stromules.

ABSTRACT: Communication between chloroplasts and the nucleus in response to various environmental cues may be mediated by various small molecules. Signalling specificity could be enhanced if the physical contact between these organelles facilitates direct transfer and prevents interference from other subcellular sources of the same molecules. Plant cells have plastid-nuclear complexes, which provide close physical contact between these organelles. Plastid-nuclear complexes have been proposed to facilitate transfer of photosynthesis-derived H₂O₂ to the nucleus in high light. Stromules (stroma filled tubular plastid extensions) may provide an additional conduit for transfer of a wider range of signalling molecules, including proteins. However, plastid-nuclear complexes and stromu

SUBMITTER: Mullineaux PM 

PROVIDER: S-EPMC7209948 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature