Remote sensing of the xanthophyll cycle and chlorophyll fluorescence in sunflower leaves and canopies
- 1 November 1990
- journal article
- research article
- Published by Springer Nature in Oecologia
- Vol. 85 (1) , 1-7
- https://doi.org/10.1007/bf00317336
Abstract
Sudden illumination of sunflower (Helianthus annuus L. cv. CGL 208) leaves and canopies led to excess absorbed PFD and induced apparent reflectance changes in the green, red and near-infrared detectable with a remote spectroradiometer. The green shift, centered near 531 nm, was caused by reflectance changes associated with the de-epoxidation of violaxanthin to zeaxanthin via antheraxanthin and with the chloroplast thylakoid pH gradient. The red (685 nm) and near-infrared (738 nm) signals were due to quenching of chlorophyll fluorescence. Remote sensing of shifts in these spectral regions provides non-destructive information on in situ photosynthetic performance and could lead to improved techniques for remote sensing of canopy photosynthesis.Keywords
This publication has 20 references indexed in Scilit:
- Light-Induced Spectral Absorbance Changes in Relation to Photosynthesis and the Epoxidation State of Xanthophyll Cycle Components in Cotton LeavesPlant Physiology, 1989
- Chlorophyll Fluorescence as a Probe of the Photosynthetic Competence of Leaves in the Field: A Review of Current InstrumentationFunctional Ecology, 1989
- Relating seasonal patterns of the AVHRR vegetation index to simulated photosynthesis and transpiration of forests in different climatesRemote Sensing of Environment, 1988
- Models of vegetation canopy reflectance and their use in estimation of biophysical parameters from reflectance dataRemote Sensing Reviews, 1988
- Relationships between vegetation indices, radiation absorption, and net photosynthesis evaluated by a sensitivity analysisRemote Sensing of Environment, 1987
- Canopy reflectance, photosynthesis, and transpiration, II. The role of biophysics in the linearity of their interdependenceRemote Sensing of Environment, 1987
- Photoinduced quenching of chlorophyll fluorescence in intact chloroplasts and algae. Resolution into two componentsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1982
- The effects of dithiothreitol on violaxanthin de-epoxidation and absorbance changes in the 500-nm regionBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1972
- Conformational changes of chloroplasts induced by illumination of leaves in vivoBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1969
- The Distortion of Fluorescence Spectra in Leaves by Light Scattering and Its Reduction by InfiltrationPhysiologia Plantarum, 1954