Publications [#230038] of Zhen-Ming Pei
search www.ncbi.nlm.nih.gov.Papers Published
- Tang, R-H; Han, S; Zheng, H; Cook, CW; Choi, CS; Woerner, TE; Jackson, RB; Pei, Z-M, Coupling diurnal cytosolic Ca2+ oscillations to the CAS-IP3 pathway in Arabidopsis.,
Science (New York, N.Y.), vol. 315 no. 5817
(March, 2007),
pp. 1423-1426 [17347443], [doi] .
(last updated on 2024/08/25)Abstract:
Various signaling pathways rely on changes in cytosolic calcium ion concentration ([Ca2+]i). In plants, resting [Ca2+]i oscillates diurnally. We show that in Arabidopsis thaliana, [Ca2+]i oscillations are synchronized to extracellular Ca2+ concentration ([Ca2+]o) oscillations largely through the Ca2+-sensing receptor CAS. CAS regulates concentrations of inositol 1,4,5-trisphosphate (IP3), which in turn directs release of Ca2+ from internal stores. The oscillating amplitudes of [Ca2+]o and [Ca2+]i are controlled by soil Ca2+ concentrations and transpiration rates. The phase and period of oscillations are likely determined by stomatal conductance. Thus, the internal concentration of Ca2+ in plant cells is constantly being actively revised.