STRUCTURAL REMODELING. “The ultrastructure of mesophyll cells of Pinus silvestris L. is known to vary depending on the conditions of the physical environment (e.g., temperature, light level). Changes in cell ultrastructure of P. silvestris L. needles cell under natural conditions involve all organelles and take place either in response to spontaneously occurring extreme weather events or to regular seasonal changes (in spring and in autumn).”
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