MiR319a-mediated salt stress response in poplar.

ABSTRACT: Maintenance of intracellular ion balance, especially Na⁺ and K⁺, plays an important role in plant responses to salt stress. Vessels in xylem are responsible for long-distance ion transport in vascular plants. Knowledge on the salt stress response in woody plants in limited. In this study, we identified miR319a as an important regulator in respond to salt stress in poplar. miR319a overexpression transgenic poplar showed a salt-tolerant phenotype, and cytological observation showed reduced cambium cell layers, wider xylem, increased number and lumen area of vessels and fibers, and thinner cell wall thickness in the transgenics. The miR319a-MIMIC plants, meanwhile, had opposite phenotypes, with narrower xylem, reduced number and lumen area of vessels and fibers cells, an

SUBMITTER: Cheng Y 

PROVIDER: S-EPMC11298623 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature