Unexpected localization in chloroplasts rather than specialized acidocalcisomes known from other species, polyphosphate could be one of the major adaptation advantages in the terrestrialization process of zygnematophytes, the sister group of land plants.

Barcyte et al. (2020). Journal of Phycology

Barcytė, D., Pilátová, J., Mojzeš, P., & Nedbalová, L. (2020). The arctic Cylindrocystis (Zygnematophyceae, Streptophyta) green algae are genetically and morphologically diverse and exhibit effective accumulation of polyphosphate. Journal of Phycology, 56(1): 217–232. 10.1111/jpy.12931, – top cited article