Plant environmental sensing relies on specialized plastids

Sally A. Mackenzie, Philip M. Mullineaux

Research output: Contribution to journalReview articlepeer-review

8 Scopus citations


In plants, plastids are thought to interconvert to various forms that are specialized for photosynthesis, starch and oil storage, and diverse pigment accumulation. Post-endosymbiotic evolution has led to adaptations and specializations within plastid populations that align organellar functions with different cellular properties in primary and secondary metabolism, plant growth, organ development, and environmental sensing. Here, we review the plastid biology literature in light of recent reports supporting a class of ‘sensory plastids’ that are specialized for stress sensing and signaling. Abundant literature indicates that epidermal and vascular parenchyma plastids display shared features of dynamic morphology, proteome composition, and plastid–nuclear interaction that facilitate environmental sensing and signaling. These findings have the potential to reshape our understanding of plastid functional diversification.

Original languageEnglish (US)
Pages (from-to)7155-7164
Number of pages10
JournalJournal of experimental botany
Issue number21
StatePublished - Nov 19 2022

All Science Journal Classification (ASJC) codes

  • Physiology
  • Plant Science

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