bacterial leaf blight in rice
- caused by a bacterium Xanthomonas oryzae pv. oryzae.
- Also called Xoo bacteria. Xoo is a gram-negative bacteria.
- It is a vascular disease.
- Xoo infection initiates from the leaf sheath and eventually spreads to mature leaves through the water flow.
- Xoo may infect other plants, such as rice cut-grass (Leersia oryzoides), Chinese sprangletop (Leptochloa chinensis), and common grasses and weeds.
- The most-common method of defending against rice bacterial blight is the cultivation of rice varieties with genes that confer resistance to Xoo infection.
- scientists from the Centre for Plant Molecular Biology (CPMB) have uncovered the mechanism by which a bacterium called Xoo interacts with rice plants and causes disease.