[Effects of root abscisic acid on Na transport and photosystem 2 in Helianthus tuberosus under salt stress].

The effects of root abscisic acid (ABA) signal on Na transport and photosystem 2 (PS2) in Jerusalem artichoke (Helianthus tuberosus) under salt stress (150 mmol·L NaCl) were examined by applying ABA synthesis inhibitor sodium tungstate to roots. Sodium tungstate inhibited ABA synthesis in roots, reduced root Na efflux, and increased the efficiency of Na transport from roots to leaves under salt stress. Salt stress increased leaf Na content and did not affect leaf membrane lipid peroxidation, PS2 reaction center protein and PS2 maximum photochemical efficiency (F/F ).

Salt adaptability in a halophytic soybean (Glycine soja) involves photosystems coordination.

Background: Glycine soja is a halophytic soybean native to saline soil in Yellow River Delta, China. Photosystem I (PSI) performance and the interaction between photosystem II (PSII) and PSI remain unclear in Glycine soja under salt stress. This study aimed to explore salt adaptability in Glycine soja in terms of photosystems coordination.