Analysis of thylakoid membrane proteins responsible for protection of photosystem I in barley cultivar "Sarab 1 (SRB1)" with high Fe deficiency tolerance

齋藤 彰宏*; 栗田 圭輔  ; 鈴井 伸郎*; 河地 有木*; 鹿内 勇佑*; 樋口 恭子*

Saito, Akihiro*; Kurita, Keisuke; Suzui, Nobuo*; Kawachi, Naoki*; Shikanai, Yusuke*; Higuchi, Kyoko*

Iron (Fe) is an essential element for plants and is particularly indispensable for the functioning of the photosystem in chloroplasts. Fe deficiency perturbs the photosystem I (PSI) function since it requires a large amount of Fe and thus generates photo-oxidative stress. The barley cultivar "Sarab 1" exhibits extremely high tolerance to Fe deficiency, which is associated with PSI maintenance with high photosynthetic Fe-use efficiency during Fe deficiency. However, how "Sarab 1" maintains PSI function has not been clarified. This study explores the mechanisms associated with maintaining PSI in "Sarab 1" during Fe deficiency.