Auxin efflux carrier ZmPIN1a modulates auxin reallocation involved in nitrate-mediated root formation.

ABSTRACT:

Background

Auxin plays a crucial role in nitrate (NO₃^-)-mediated root architecture, and it is still unclear that if NO₃^- supply modulates auxin reallocation for regulating root formation in maize (Zea mays L.). This study was conducted to investigate the role of auxin efflux carrier ZmPIN1a in the root formation in response to NO₃^- supply.

Results

Low NO₃^- (LN) promoted primary root (PR) elongation, while repressed the development of lateral root primordia (LRP) and total root length. LN modulated auxin levels and polar transport and regulated the expression of auxin-responsive and -signaling genes in roots. Moreover, LN up-regulated the expression level of ZmPIN1a, and overexpression of

SUBMITTER: Wang Y 

PROVIDER: S-EPMC9896688 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature