How to upgrade stolen organelles into permanent plastids: A comparative transcriptomic perspective.

ABSTRACT: Tertiary plastids derived from diatoms in "dinotom" dinoflagellates offer a rare view of organellogenesis in action, while the genomic and metabolic processes underlying their conversion remain poorly understood. Here, we present a comparative transcriptomic analysis of two dinotoms at different plastidial levels: Durinskia capensis at the kleptoplastidy state, alongside its kleptoplastid-source diatom Nitzschia captiva, and its close relative Durinskia kwazulunatalensis at an early permanent state. We show that in both dinotoms, the diatom nucleus retains high transcriptional autonomy, but its expression profile is plastid biased, signaling early host influence. In contrast, only D. kwazulunatalensis exhibits striking signs of genomic reconfiguration in the dia

SUBMITTER: Yamada N 

PROVIDER: S-EPMC12519138 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature