Prelims Bits
Discovery: Identified by researchers at Banaras Hindu University
Target Host: Found affecting Chrysopogon zizanioides (Vetiver/Khus)
Identification Process
- Morpho-cultural analysis: Key traits observed
- Molecular phylogenetic studies: Confirmed the species as distinct
- The fungus formed a separate clade from related Epicoccum species
Significance of Vetiver (Khus)
- Valued for medicinal properties: Treats pain, inflammation, and infections
- Used in traditional medicine and as an essential oil source
- Threat to vetiver cultivation underscores the need for early diagnosis and control
Leaf Spot Disease Overview
- Characterised by discoloured, necrotic spots on leaves
- Reduces plant’s photosynthesis, causing weakened growth and potential defoliation
Favourable Conditions for Disease Spread
- Prolonged wet and humid environments
- Spread through wind, rain splashes, or irrigation
Etymology and Cultural Note
- ‘Vetiver’ comes from the Tamil word meaning “root dug up”
- Known as Khus in Northern India
- Should not be confused with Khus Khus (poppy seeds)
This discovery highlights the importance of protecting medicinal plants like vetiver and improving fungal disease management in agriculture.