Microbial solutions to reduce losses in vegetative plant propagation

Overview

Vegetative plant propagation through cuttings and in vitro cultures is widely used for crops and ornamentals, but it suffers from significant losses of 20-50% during the rooting phase due to abiotic stressors and disease pressure. This solution addresses that bottleneck by deploying specially selected and enhanced plant-associated bacteria that nurture cuttings and protect them against stress. Proof-of-concept trials in roses and chrysanthemums demonstrated rooting improvements of approximately 50% compared to untreated controls. The approach is designed to integrate into existing propagation workflows as a microbial inoculant treatment, offering a biological alternative or complement to conventional rooting hormones and fungicides.

Technical specifications

• Microbial inoculant platform based on beneficial bacteria isolated from plant root environments
• Functional gene screening using PCR against a curated gene set established for rooting physiology and stress tolerance
• Non-GMO enhancement through experimental evolution to increase expression of beneficial rooting-related genes
• Consortium design combining single strains that each excel at a specific function needed for successful rooting
• Validated proof-of-concept in two ornamental species (rose and chrysanthemum) showing 50% rooting improvement (ANOVA, N=200, p<0.001)
• Scientific basis established through prior work showing that genetic modifications in microorganisms can produce phenotypes equivalent to plant genome mutations
• Formulation development planned to optimize delivery, shelf life, and application ease for commercial propagation settings
• Target applications include ornamental propagation (rose as first model) and broader crop species propagated vegetatively

Technology readiness level

The technology is at an early-to-mid stage of development. Proof-of-concept validation has been completed in two ornamental species with statistically significant rooting improvements. The next phase involves isolating bacteria from natural root environments, enhancing them through non-GMO experimental evolution, testing single strains and consortia on rose as the primary target, and optimizing the formulation of the most promising candidates. The project is calibrated to last one year and requires support for a dedicated technician plus partial coverage of laboratory and travel costs. The underlying science is grounded in published research, and the company has existing capabilities in microbiome engineering, high-throughput sequencing, bioinformatics, and predictive analytics to support development.