Systemic movement of long non-coding RNA ELENA1 attenuates leaf senescence under nitrogen deficiency.

Nitrogen is an essential macronutrient that is absorbed by roots and stored in leaves, mainly as ribulose-1,5-bisphosphate carboxylase/oxygenase. During nitrogen deficiency (-N), plants activate leaf senescence for source-to-sink nitrogen remobilization for adaptative growth. However, how -N signals perceived by roots are propagated to shoots remains underexplored.