Calcium signaling in plant mineral nutrition: From uptake to transport.

Plant mineral nutrition is essential for crop yields and human health. However, the uneven distribution of mineral elements over time and space leads to a lack or excess of available mineral elements in plants. Among the essential nutrients, calcium (Ca) stands out as a prominent second messenger that plays crucial roles in response to extracellular stimuli in all eukaryotes. Distinct Ca signatures with unique parameters are induced by different stresses and deciphered by various Ca sensors. Recent research on the participation of Ca signaling in regulation of mineral elements has made great progress. In this review, we focus on the impact of Ca signaling on plant mineral uptake and detoxification. Specifically, we emphasize the significance of Ca signaling for regulation of plant mineral nutrition and delve into key points and novel avenues for future investigations, aiming to offer new insights into plant ion homeostasis.