Chapter 19: MOA Part 4 – Photosynthesis Inhibitors (Photosystems)
19.1 Objectives
Learning Objectives
After completing this chapter, you will be able to:
- Explain the role of photosystems.
- Explain the importance of the D1 protein.
- Describe the mechanism by which herbicides interfere with Photosystem I and Photosystem II.
- Explain how selectivity can be achieved in the design of the herbicides which interfere with photosystems.
- Describe the symptoms seen in susceptible plants to the Photosystem Inhibitors.
- Summarize weed resistance findings to both Photosystem Inhibitors.
- Define vocabulary words: Photosystem I and II, D1, PQ, electron transfer chain, ferredoxin, chlorophyll, chloroplast, triplet chlorophyll, necrosis