Source 1primary paper2003Proceedings of the National Academy of Sciences
Toolkit/chlorophyll fluorescence lifetime measurements
chlorophyll fluorescence lifetime measurements
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Chlorophyll fluorescence lifetime measurements are an optical assay method used to detect free chlorophyll. In Arabidopsis chaos leaves, this method detected free chlorophyll before visible symptoms of oxidative stress appeared.
Usefulness & Problems
Why this is useful
This assay is useful for identifying free chlorophyll, which the cited study describes as a generator of singlet oxygen in the light. It therefore provides an optical readout associated with early photooxidative stress-related states before overt visible damage.
Problem solved
The method addresses the problem of detecting free chlorophyll in plant tissue at an early stage, before visible oxidative stress symptoms appear. In the cited Arabidopsis context, it enabled earlier detection than symptom-based observation.
Problem links
Need precise spatiotemporal control with light input
DerivedChlorophyll fluorescence lifetime measurements are an optical assay method used to detect free chlorophyll. In the cited Arabidopsis study, this method detected free chlorophyll in chaos leaves before visible symptoms of oxidative stress appeared.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Mechanisms
fluorescence lifetime measurementfluorescence lifetime measurementoptical detectionoptical detectionTarget processes
No target processes tagged yet.
Input: Light
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: spectral hardware requirementoperating role: sensor
The assay uses light-based chlorophyll fluorescence lifetime measurement to detect free chlorophyll in plant leaves. The provided evidence does not specify excitation or emission settings, instrument configuration, sample preparation, or calibration requirements.
The supplied evidence is limited to a single study and a single reported application in Arabidopsis chaos leaves. No details are provided here on instrumentation, sensitivity, specificity, temporal resolution, or performance in other organisms or sample types.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Approval Evidence
1 source1 linked approval claimfirst-pass slug chlorophyll-fluorescence-lifetime-measurements
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements
Source:
detectionsupports
Free chlorophyll was detected in chaos leaves before symptoms of oxidative stress appeared using chlorophyll fluorescence lifetime measurements.
Free chlorophyll, a generator of singlet oxygen in the light, was detected by chlorophyll fluorescence lifetime measurements in chaos leaves before the symptoms of oxidative stress appeared.
Source:
Comparisons
Source-backed strengths
The reported strength is early detection: free chlorophyll was detected in chaos leaves before visible oxidative stress symptoms appeared. The evidence directly supports use in Arabidopsis leaves as a non-destructive optical measurement, but does not provide quantitative performance metrics in the supplied material.
Compared with native green gel system
chlorophyll fluorescence lifetime measurements and native green gel system address a similar problem space.
Shared frame: same top-level item type; same primary input modality: light
Compared with open-source microplate reader
chlorophyll fluorescence lifetime measurements and open-source microplate reader address a similar problem space.
Shared frame: same top-level item type; same primary input modality: light
Compared with plant transcriptome profiling
chlorophyll fluorescence lifetime measurements and plant transcriptome profiling address a similar problem space.
Shared frame: same top-level item type; same primary input modality: light
Ranked Citations
- 1.