Halophytic Hordeum brevisubulatum HbHAK1 Facilitates Potassium Retention and Contributes to Salt Tolerance.

ABSTRACT: Potassium retention under saline conditions has emerged as an important determinant for salt tolerance in plants. Halophytic Hordeum brevisubulatum evolves better strategies to retain K⁺ to improve high-salt tolerance. Hence, uncovering K⁺-efficient uptake under salt stress is vital for understanding K⁺ homeostasis. HAK/KUP/KT transporters play important roles in promoting K⁺ uptake during multiple stresses. Here, we obtained nine salt-induced HAK/KUP/KT members in H. brevisubulatum with different expression patterns compared with H. vulgare through transcriptomic analysis. One member HbHAK1 showed high-affinity K⁺ transporter activity in athak5 to cope with low-K⁺ or salt stresses. The expression

SUBMITTER: Zhang H 

PROVIDER: S-EPMC7432250 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature