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Calcium-dependent oligomerization of CAR proteins at cell membrane modulates ABA signaling

2015; National Academy of Sciences; Volume: 113; Issue: 3 Linguagem: Inglês

10.1073/pnas.1512779113

1091-6490

Maira Díaz, María José Sánchez-Barrena, Juana María González-Rubio, Lesia Rodríguez, Daniel Fernández, Regina Antoni, Cristina Yunta, Borja Belda‐Palazón, Miguel González‐Guzmán, Marta Peirats‐Llobet, Margarita Menéndez, Jasminka Boskovic, José A. Márquez, Pedro L. Rodrı́guez, Armando Albert,

Plant-Microbe Interactions and Immunity

Significance Drought and salinity are the major threats to crop productivity at a worldwide scale. A fundamental portion of the plant response to these environmental stresses occurs at the cell membrane, where the molecular machinery to preserve cell turgor and the appropriate balance of intracellular ions is found. The C2-domain ABA-related (CAR) family of proteins contributes to these processes by delivering the regulatory proteins controlling this machinery from other cell compartments to the cell membrane. Our analysis provides an explanation on how CAR proteins specifically reach a particular membrane place to develop their function and trigger the plant defense mechanism against stress.