Moving beyond state birds and animals, Kerala’s recognition of a ‘good bacterium’ signals the rise of microbiome literacy in public policy
In January 2026, Kerala became the first Indian state to declare an official ‘State microbe: Bacillus subtilis’. This probiotic bacterium, commonly found in soil, the human gut and fermented foods, was chosen to represent the beneficial role of microorganisms. The declaration coincided with the dedication of the Centre of Excellence in Microbiome (CoEM), the first such national hub for translational research in human health, agriculture and environmental sustainability.
Why it matters
- Shifting the narrative: For decades, microbes were viewed through the lens of ‘germ theory’ (as pathogens). This precedent highlights them as ecosystem engineers essential for digestion, immunity, and soil fertility.
- Agricultural catalyst: B. subtilis is a powerhouse ‘bio-fungicide’. It colonises plant roots, outcompetes harmful fungi and triggers the plant’s own immune system (Induced Systemic Resistance), reducing the need for chemical pesticides.
- Industrial workhorse: Due to its ability to secrete large amounts of enzymes and survive extreme conditions by forming heat-resistant endospores, it is a ‘model organism’ for biotechnology, used in everything from vitamins to waste-water treatment.
- The ‘One Health’ approach: By recognising a microbe, the state acknowledges the interconnectedness of human, animal and environmental health, often referred to as the ‘One Health’ framework.
Key significance
National comparison: While India declared ‘Lactobacillus bulgaricus’ (the curd bacterium) as the ‘National Microbe’ in 2012, Kerala is the first to do so at the state level, linking it to a specific regional research and economic agenda.
Economic bio-foundry: The global market for ‘B. subtilis’ products (probiotics and bio-fertilisers) is projected to reach nearly $166 million by 2033, offering a new ‘Green Economy’ pathway for the state.
Final outlook
The declaration of a State Microbe is an act of ‘Environmental Ethics’. It teaches that conservation isn’t just about the ‘charismatic megafauna’ (like tigers or elephants) but also about the microscopic foundations that keep our soil fertile and our bodies healthy. It marks the transition of India’s bio-policy from ‘fighting disease’ to ‘fostering life’.