Plants adapt to environmental changes by adjusting growth and defense, and the role of epigenetic modifications in this process remains unclear. Sensing and adjusting to environmental changes are more pronounced in certain tissues such as epidermis, vasculature, meristem, and reproductive tissues. These tissues possess sensory plastids that are enriched in stress response proteins. We investigated the effects of perturbation of four sensory plastid-localized proteins, MutS HOMOLOG 1 (MSH1), PsbP