PcNPF2.7 from the Xerophyte <i>Pugionium cornutum</i> Facilitates Root-to-Shoot NO₃^- Transport and Affects Na⁺ Transport Under Salt Stress.

ABSTRACT: Nitrate Excretion Transporter 1 (NAXT1/NPF2.7) is known to regulate NO₃^- transport in Arabidopsis, a salt-sensitive glycophyte that exhibits a significant reduction in the NO₃^- content under salt stress. However, its role in the NO₃^- homeostasis and salt tolerance of xerophytes, which exhibit strong stress tolerance, remains unclear. In the present study, we cloned the NPF2.7 homolog (PcNPF2.7) from the xerophyte Pugionium cornutum, which exhibits stable NO₃^- content in the shoot under salt stress, and investigated its function in ion homeostasis and salt tolerance. PcNPF2.7 was specifically expressed in the stele tissue of roots and localized to the plasma membrane; its expr

SUBMITTER: Ren PF 

PROVIDER: S-EPMC12650163 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature