| Original language | English |
|---|---|
| Title of host publication | Encyclopedia of Plant and Crop Science |
| Editors | RM Goodman |
| Place of Publication | New York |
| Publisher | Marcel Dekker Inc. |
| Pages | 245-249pp |
| Volume | 1 |
| Edition | 1st |
| ISBN (Print) | 0824709438 |
| Publication status | Published - 2004 |
Abstract
Carotenoids are plant pigments that are essential for the survival and productivity of all photosynthetic organisms. Their function in harvesting light energy complements the role of chlorophylls. The structure and assembly of the photosystems is dependent on the availability of specific carotenoids that assist in correct folding and maintain stability of photosystem proteins. In addition, carotenoids are essential for several of the photoprotective mechanisms employed by plants to effectively dissipate (as heat) excess photon energy absorbed by chlorophyll, thus preventing formation of highly reactive oxygen species. Carotenoids also deactivate singlet oxygen generated in the reaction centers and antennae.