Ion homeostasis in a salt-secreting halophytic grass #MMPMID25990364
Sanadhya P; Agarwal P; Agarwal PK
AoB Plants 2015[]; 7 (ä): ä PMID25990364show ga
Salinity adversely affects plant growth and development, and disturbs intracellular ion homeostasis, resulting in cellular toxicity. Glycophytes tolerate salinity up to 40 mM NaCl, however halophytes grow luxuriantly in salt-marshes where the salt concentration is 200 mM NaCl or more. Aeluropus lagopoides secretes salt crystals from the adaxial and abaxial leaf surface through salt glands. At high salt concentrations the level of different organic and inorganic osmolytes is elevated to prevent toxicity and maintain a sustainable K+/Na+ ratio. Different transporter genes AlHKT2;1, HAK, SOS1, NHX1, and V-ATPase expression coordinate to regulate ion homeostasis in A. lagopoides.