Individual Final Project

🌸 Litmusanthemum

A Living pH Indicator Plant

Deep Dalvi — Vadodara, India

🧠 Concept Overview

Litmusanthemum is a genetically engineered ornamental plant with pH-sensitive flower petals that function as biological litmus paper.

Instead of using disposable chemical strips, users can simply dip petals into a solution and observe color changes; creating a renewable, zero-waste pH testing system.

❓ What

A bioengineered flowering plant with:

• Petals rich in anthocyanins
• Visible color shifts across pH ranges
• Direct usability as a natural pH indicator

👉 Think: Litmus paper, but grown in a pot.

⚙️ How

The system combines plant biology with controlled genetic optimization:

1. 🌈 Enhanced Pigment Expression

• Increase anthocyanin concentration in petals
• Use natural biosynthetic pathways (no unnatural chemistry)
• Target broad and visible pH response range

2. 🌼 Sterile Flower Engineering

• Prevent reproduction to allow:
  • Safe petal harvesting
  • Controlled cultivation
• Avoid ecological spread

3. 🔁 Continuous Flowering

• Engineer everblooming traits or manipulate:
  • Photoperiod response
  • Flowering gene regulation
• Ensures year-round supply

🎯 Why

Problems with current litmus systems:

• ❌ Single-use
• ❌ Chemical waste generation
• ❌ Recurring cost
• ❌ No aesthetic or educational engagement

What Litmusanthemum solves:

• ✅ Renewable and biodegradable
• ✅ Zero-waste pH testing
• ✅ Lower long-term cost
• ✅ Visually engaging learning tool

This isn’t just a tool—it’s a living interface between biology and chemistry.

👥 Who It’s For

• 🏫 Educational institutions (school labs, STEM programs)
• 🧪 DIY bio & hobbyists
• 🌱 Sustainability advocates
• 🌍 Low-resource regions needing low-cost testing tools

🧪 Functional Demonstration

🚧 Challenges

• 🌿 Engineering robust flowering genes
• 🌼 Selecting optimal species for:
  • Continuous bloom
  • High pigment stability
• 🎯 Creating specific vs broad pH sensitivity variants
• 🧬 Genetic drift affecting pigment consistency
• 📜 Regulatory approval for engineered plants

⚖️ Key Considerations

• ⏳ Petal Shelf Life
  • Anthocyanins degrade after detachment
  • Requires rapid usage or preservation strategies
• 🌡️ Environmental Sensitivity
  • Bloom depends on light & temperature conditions
• 🎨 Color Standardization
  • Batch-to-batch variation must be minimized
• ✂️ Harvesting Strategy
  • Avoid stressing the plant while maintaining supply
• 🌸 Aesthetic vs Functional Balance
  • Must remain an ornamental plant, not just a tool

🔬 Project Aims

🎯 Aim 1 — Experimental

• Identify plant species with:
  • Naturally high anthocyanin expression
  • Strong visible pH response
• Characterize pigment behavior across pH spectrum

⚙️ Aim 2 — Developmental

• Engineer:
  • Continuous flowering phenotype
  • Stable pigment production
• Optimize harvesting cycles

🌍 Aim 3 — Visionary

• Replace traditional litmus paper in:
  • Schools
  • Basic labs
• Reduce chemical waste globally
• Establish a new category of biological testing tools

Litmusanthemum sits at a strange, beautiful intersection, where plants become instruments,
and science becomes something you can water every day.