Bacterial inocula to enhance carbon sequestration in perennial crops

Overview

This solution offers curated collections of plant-associated bacterial strains and consortia designed to modulate carbon partitioning in crop plants. By redirecting a greater share of photosynthetic carbon belowground, the inocula aim to enhance soil carbon sequestration while simultaneously improving plant growth, yield, and resilience. The approach is particularly suited to perennial biomass crops such as Miscanthus, where belowground carbon allocation represents both a productivity asset and a climate-mitigation opportunity. The technology draws on extensive bacterial culture libraries isolated from plants growing under extreme and stress-limited environments, including soils characterized by salinity and heavy metal contamination.

Technical specifications

• Curated bacterial strain library sourced from plant tissues across diverse environments, identified via 16S rRNA gene sequencing
• Functional screening for traits including salt tolerance, heavy metal tolerance, biofilm production, antagonism, and plant growth promotion in model species
• Stress-validated isolates with demonstrated positive and negative effects on plant growth under standard and abiotic stress conditions (drought and salinity)
• Consortium formulation combining complementary strains to enhance nutrient acquisition, hormone production, and plant gene expression modulation
• Genome analysis pipeline underway to identify genetic factors underlying beneficial traits, enabling strain enhancement and accelerated discovery of additional candidates
• Plant gene expression profiling following inoculation to identify novel breeding targets for longer-term crop improvement
• Application as inocula for near-term field deployment alongside breeding strategies for sustained crop improvement

Technology readiness level

The technology is currently at a mid-stage development level. Bacterial isolates have been cultured, taxonomically identified, and functionally characterized for plant growth promotion and stress tolerance traits. Genome analysis of strains of interest is in progress, and gene expression studies are elucidating the plant-side mechanisms involved. Near-term validation will involve controlled plant growth experiments with and without bacterial inoculation under abiotic stress conditions, using inbred lines to accelerate strain selection for eventual field testing on crops. The pathway to deployment includes development of optimized strains or consortia as commercial inocula for perennial biomass cropping systems.