Agrobacterium Strains

Agrobacterium strains represent engineered or naturally derived bacterial lines used for plant genetic transformation and related workflows. In Flask Track, strains act as a bridge between plasmids and biological workflows, ensuring traceability, safety, and reproducibility.

What Is an Agrobacterium Strain?

An Agrobacterium strain is a specific bacterial background (for example AGL1, GV3101, or EHA105) that can carry one or more plasmids and is used to introduce genetic material into plant cells.

Each strain defines:

• The genetic background of the bacterium
• Which plasmids it carries
• Which selectable markers apply
• Any notes or experimental considerations
• Associated sequence files (optional)

Strains are commonly reused across many experiments, so Flask Track treats them as first-class catalog entities.

Strain Overview Page

The strain view page provides a complete snapshot of the strain, including:

• Strain name (e.g. AGL1)
• Background / lineage
• Internal notes
• Linked plasmids
• Selectable markers
• Attached files (including sequences)

Background

The Background field describes the genetic origin of the strain.

Examples:

• C58-derived
• Disarmed Ti plasmid background
• Super-virulent strain

This information helps users understand:

• Transformation efficiency expectations
• Compatibility with certain plasmids
• Regulatory or biosafety implications

Notes

The Notes section is free-form and intended for practical lab context, such as:

• Enhanced vir gene expression
• Known transformation efficiencies
• Growth characteristics
• Special handling considerations

These notes are especially useful for onboarding new lab members or maintaining institutional knowledge.

Associated Plasmids

What This Means

Each Agrobacterium strain can be linked to one or more plasmids. This linkage represents the actual biological pairing used in experiments.

For each linked plasmid, Flask Track records:

• Plasmid name
• Selectable marker
• Ability to unlink the plasmid

Why This Matters

Linking plasmids to strains allows Flask Track to:

• Automatically validate workflows that require plasmids
• Enforce compliance rules (e.g. GMO handling)
• Ensure experiments are reproducible
• Prevent invalid combinations at execution time

Selectable Markers

What Is a Selectable Marker?

A selectable marker is a gene that allows researchers to select for bacteria that successfully contain a plasmid.

In practice:

• The marker provides resistance to a specific antibiotic
• Only bacteria carrying the plasmid survive when the antibiotic is present

Common examples include:

• kanamycin
• aac
• hygromycin
• spectinomycin

Where Markers Apply

Selectable markers appear at two levels:

1. Plasmid level – what resistance the plasmid encodes
2. Strain–plasmid linkage – which marker is actively used in that strain

Why Flask Track Tracks Markers Explicitly

Explicit marker tracking allows Flask Track to:

• Prevent incompatible plasmid–strain combinations
• Guide correct antibiotic selection during culture
• Support audits and compliance reviews
• Reduce experimental errors for less experienced users

Linking a Plasmid to a Strain

To associate a plasmid with a strain:

1. Select the strain
2. Choose the plasmid
3. Enter the selectable marker
4. Click Link

Once linked:

• The relationship becomes immediately visible
• The strain becomes eligible for workflows requiring plasmids
• Marker information propagates into downstream steps

Files & Sequence Viewer

Attached Files

Strains may have files attached, such as:

• FASTA / FASTQ sequence files
• Reference annotations
• Internal documentation

Sequence Viewer

When a sequence file is attached, Flask Track automatically enables the Sequence Viewer, which provides:

• Circular or linear sequence visualization
• Base-level inspection
• Length and orientation information
• Amino acid translations (where applicable)

The sequence viewer is consistent across the system and appears anywhere sequence files are uploaded.

Usage in Workflows

Agrobacterium strains are referenced by:

• Protocols (e.g. transformation steps)
• Workflows (Agro co-cultivation pipelines)
• Compliance rules (GMO handling and containment)
• Species defaults (pre-filled transformation settings)

This ensures experiments remain tied to real biological materials, not just abstract steps.

Compliance & Traceability

Because Agrobacterium strains often involve recombinant DNA:

• All changes are recorded in the Audit Log
• Linked plasmids inherit compliance context
• Strains can trigger compliance checklists
• Usage is reviewable during audits

This design supports both academic research and regulated environments.

Summary

Agrobacterium strains in Flask Track provide:

• Clear representation of bacterial backgrounds
• Explicit plasmid and selectable marker tracking
• Built-in compliance and audit support
• End-to-end traceability across experiments
• A shared source of truth for transformation workflows