Related Experiment Video
Updated: Aug 2, 2026

09:50
Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Carotenoid biosynthesis in flowering plants
1Department of Genetics, The Alexander Silberman Life Science Institute, The Hebrew University of Jerusalem, 91904, Jerusalem, Israel. Joseph.Hirschberg@huji.ac.il
Current Opinion in Plant Biology
|April 20, 2001
Summary
Carotenoid biosynthesis pathways are well-understood, with plant molecular details emerging in the 1990s. Current research enables genetic manipulation of carotenoid production in crops.
Area of Science:
- Biochemistry
- Plant Molecular Biology
- Metabolic Engineering
Background:
- The overall carotenoid biosynthesis pathway has been established for over 30 years.
- Molecular insights into plant carotenogenesis intensified in the 1990s following gene cloning for key enzymes.
- Carotenoids are vital plant pigments with roles in photosynthesis and human health.
Purpose of the Study:
- To review the current understanding of carotenoid biosynthesis in plants.
- To highlight recent advancements in the biochemistry and regulation of carotenogenesis.
- To explore the potential for genetic manipulation of carotenoid pathways in crop species.
Main Methods:
- Literature review of established and recent research on carotenoid biosynthesis.
- Analysis of molecular data concerning carotenogenic genes and enzymes in plants.
- Synthesis of biochemical and regulatory information relevant to in vivo studies.
Main Results:
- The fundamental carotenoid pathway is conserved, but plant-specific molecular details have been elucidated.
- Recent biochemical data provide a deeper understanding of pathway regulation within the plant cell.
- The cloning of carotenogenic enzyme genes has paved the way for targeted genetic studies.
Conclusions:
- Genetic manipulation of carotenoid biosynthesis in crops is now feasible.
- Enhanced carotenoid content in crops could improve nutritional value and agricultural applications.
- Continued research into pathway regulation will optimize genetic engineering strategies.
More Related Videos
Related Concept Videos
C4 Pathway and CAM
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
Morphogenesis
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
Photoreceptors and Plant Responses to Light
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
The Calvin Benson Cycle
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
The Antenna Complex
Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
Cell Signaling in Plants
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...

