MicroRNA165 and 166 modulate response of the Arabidopsis root apical meristem to salt stress.

ABSTRACT: In plants, developmental plasticity allows for the modulation of organ growth in response to environmental cues. Being in contact with soil, roots are the first organ that responds to various types of soil abiotic stress such as high salt concentration. In the root, developmental plasticity relies on changes in the activity of the apical meristem, the region at the tip of the root where a set of self-renewing undifferentiated stem cells sustain growth. Here, we show that salt stress promotes differentiation of root meristem cells via reducing the dosage of the microRNAs miR165 and 166. By means of genetic, molecular and computational analysis, we show that the levels of miR165 and 166 respond to high salt concentration, and that miR165 and 166-dependent PHABULOSA (PHB) modulation is centra

SUBMITTER: Scintu D 

PROVIDER: S-EPMC10421904 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature