Ben-Gurion University Scientists Discover Plants Absorb Phosphorus and Iron Directly from Atmospheric Dust Particles

Plants can extract phosphorus and iron from atmospheric dust on their leaves, Ben-Gurion University researchers find. A major shift in botanical science.

By: AXL Media

Published: Apr 29, 2026, 6:40 AM EDT

Source: Information for this report was sourced from EurekAlert

The Leaf as a Functional Digestive Interface

Groundbreaking research from Ben-Gurion University of the Negev has revealed that the plant canopy serves as a far more active nutritional interface than previously understood. Traditionally, the scientific community viewed soil as the primary, if not exclusive, medium for nutrient acquisition. However, this study demonstrates that atmospheric dust settling on leaf surfaces can dissolve and release critical elements like phosphorus and iron. This foliar pathway allows plants to bypass the root system for immediate nutrient intake, effectively utilizing the atmosphere as a direct resource for survival and growth.

Simulating Mediterranean Dust Deposition Events

The findings were established through a rigorous field study in a Mediterranean environment designed to simulate natural dust events. Investigators observed that the mildly acidic nature of certain leaves facilitates the dissolution of dust particles, which then release both macronutrients and micronutrients into the plant's internal systems. According to Dr. Anton Lokshin, a researcher at BGU, the integration of field observations with global dust-deposition estimates shows that during these events, the daily nutrient input from leaves can match or even exceed the amount of nutrients drawn upward from the soil.

Challenging the Soil-Centric Botanical Paradigm

This discovery marks a significant shift in how ecologists and plant biologists view ecosystem functioning. By moving away from a soil-centric model, the research highlights a vegetation-mediated pathway where the plant is not a passive collector of dust but an active processor of it. In regions where the soil is naturally depleted of essential minerals, this leaf-based acquisition could be the defining factor in a plant's ability to thrive. This overlooked contribution to plant nutrition provides a new lens through which to examine global environmental changes and vegetation health.