Home Botany Fluorescence intensity measurement
Steps
  1. 1 Open fluorescence intensity macro --:--
  2. 2 Select image folder for analysis 00:30
  3. 3 Set threshold limit value 00:57
  4. 4 Generate vacuole masks automatically 01:12
  5. 5 Quantify red and green fluorescence 01:25
  6. 6 Save fluorescence intensity ratios 01:41
Botany Bio-protocol Video Citable · DOI

Fluorescence intensity measurement

DOI: 10.21769/BioProtoc.v269
Protocol
Difficulty
intermediate

Steps

1
Open fluorescence intensity macro

Navigate to Plugins, Macros, Run and locate the fluorescenceintensity.igm macro file in the Autoflux folder.

▶ --:--
2
Select image folder for analysis

Choose the folder containing pre-processed images that have already undergone image processor and calibration macros. The demo uses the Flux vs. Time sample dataset.

▶ 00:30
3
Set threshold limit value

Input the upper threshold limit value determined from the calibration macro. For this example, a value of 3 is selected.

▶ 00:57
4
Generate vacuole masks automatically

The macro automatically identifies vacuolar regions using the green fluorescent protein channel and saves the selected area masks as .tif files.

▶ 01:12
5
Quantify red and green fluorescence

The masks are applied to measure fluorescence intensities in both red and green channels of the corresponding image regions.

▶ 01:25
6
Save fluorescence intensity ratios

Ratios of vacuolar red to green fluorescence intensities are automatically calculated and exported to .csv files with matching filenames.

▶ 01:41
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