Enhancement of plasmalemmasome formation in spinach mesophyll cells

Abstract

Plasmalemmasomes (PLSs) are intrusions of the plasmalemma into the cytoplasm and further into the vacuole. A dramatically increased frequency of PLSs was found in mesophyll cells of developing and mature spinach leaves sprayed with Ti-ascorbate as compared to the K-ascorbate and water control. Some details of their early development are presented. The increased frequency of PSs is discussed in the context of eustress, aquaporins and increased water-flux. ARTICLE HISTORY

Plant cell compartments

“…Peculiar organization of the plasma membranes analogous to charasomes (Absolonova, Foissner, and Sommer 2019) can be also observed in angiosperm plant cells for instance during the formation of the socalled plasmalemmasomes (Keresztes and Bóka 2019). These structures are omega-shaped small engulfings of the plasma membrane first into the cytoplasm and finally into the vacuolar compartment.…”

“…These structures are omega-shaped small engulfings of the plasma membrane first into the cytoplasm and finally into the vacuolar compartment. In this Special Issue, the research paper by Keresztes and Bóka (2019) presents evidence for plasmalemmasome formation and discusses the factors inducing this process as well as the potential role of these organelles in facilitating water transport between the apoplast and the vacuole.…”