PHR-Mediated Pi Starvation Response Mobile Messenger RNAs Represent Noncoding Transcripts in Recipient Tissues.

ABSTRACT: Nutritional deficiency for phosphate (Pi) or nitrogen triggers long-distance transport of specific mobile mRNAs, but little is known about the underlying regulation, function, and structural features of these mobile nutrient starvation-specific mRNAs. Here, heterografting and high-throughput sequencing are used to explore the landscape of long-distance mRNA transport in Arabidopsis under normal and Pi-starvation conditions. Hundreds of Pi starvation response (PSR)-specific mobile mRNAs are discovered, although their abundance is constant between normal and Pi starvation conditions. The mobility of these PSR-specific mobile mRNAs is largely dependent on PHOSPHATE STARVATION RESPONSE (PHR) function, based on mutant analysis. Notably, translatome analysis and transgenic experiments reveal tha

SUBMITTER: Dong W 

PROVIDER: S-EPMC12822437 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature