Year: 2009
Type: review
Abstract: Although physiological and biochemical data since long suggested that Na(+)/H(+) and K(+)/H(+) antiporters are involved in intracellular ion and pH regulation in plants, it has taken a long time to identify genes encoding antiporters that could fulfil these roles. Genome sequencing projects have now shown that plants contain a very large number of putative Cation/Proton antiporters, the function of which is only beginning to be studied. The intracellular NHX transporters constitute the first Cation/Proton exchanger family studied in plants. The founding member, AtNHX1, was identified as an important salt tolerance determinant and suggested to catalyze Na(+) accumulation in vacuoles. It is, however, becoming increasingly clear, that this gene and other members of the family also play crucial roles in pH regulation and K(+) homeostasis, regulating processes from vesicle trafficking and cell expansion to plant development.
Source: Plant Signaling & Behavior
DOI: 10.4161/psb.4.4.7919
Authors: M. Pilar Rodríguez-Rosales, Francisco J. Gálvez, Raúl Huertas, M. Nieves Aranda, Mourad Baghour, Olivier Cagnac, Kees Venema
Language: English
Subfield: Plant Science
Domain: Life Sciences
Open Access status: bronze
Funder: Junta de Andalucía
OpenAlex ID: W2094074924