Dear Colleagues,

Root development, in terms of root system architecture, i.e., size and shape, together with micro-traits (such as root hairs and a relative capacity to take up individual nutrients via uptake channels), is key within the complex system of the soil–plant continuum that influences plant nutritional status. This nutrient status can have ecosystem impacts through plant feeders, and ultimately, in the case of crop plants, the productivity of the human food chain, in terms of both quantity and quality.

Roots influenced by genotype are also highly influenced in their development by their environment. Natural soil environments can be very heterogenous, in terms of physical and nutrient status, in contrast to many contained environment systems used for screening root systems. In addition, changes in climate can influence the soil environment, e.g., no-till, and regenerative agriculture can produce a soil environment with different physical and biological properties to conventional inversion tilled soil. There is still uncertainty surrounding the impacts of root traits in these plant–soil systems in terms of nutrient flows, and how we can ensure that crops are future-proofed to maintain yields and ensure nutritious crops in line with the UN sustainability goals. 
This Special Issue aims to highlight adaptive root (and plant) traits that influence the optimal uptake and utilization nutrients from the soil in a wide range of environments.

Dr. Tracy Valentine
Dr. Surya Kant 
Guest Editors

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• root system architecture
• root hairs
• nutrient uptake
• nutrient partitioning
• plant–soil interactions
• microbial–plant interactions
• exudates
• genetic diversity