Colletotrichum sublineolum

Acervuli_of_Colletotrichum_sublineolum_on_Sweet_sorghum

Colletotrichum sublineolum

Colletotrichum sublineolum is a plant pathogenic fungus that causes anthracnose in sorghum plants. It is a significant disease that affects sorghum production worldwide.

Description

Colletotrichum sublineolum is a filamentous fungus belonging to the genus Colletotrichum. It is known for its ability to infect sorghum plants, causing symptoms such as leaf spots, stem lesions, and grain discoloration. The fungus spreads through spores that are dispersed by wind, rain, and agricultural practices.

Host Range

Colletotrichum sublineolum primarily infects sorghum (Sorghum bicolor) plants. However, it has also been reported to infect other grass species, including maize (Zea mays) and sugarcane (Saccharum officinarum).

Disease Cycle

The disease cycle of Colletotrichum sublineolum typically begins with spores landing on the host plant. The spores germinate and penetrate the plant tissues, leading to the development of characteristic symptoms. The fungus produces more spores on infected plant parts, which are then spread to other plants, completing the cycle.

Management

Management of Colletotrichum sublineolum involves a combination of cultural practices, chemical control, and resistant cultivars. Practices such as crop rotation, sanitation, and planting disease-resistant varieties can help reduce the impact of the disease. Fungicides may also be used to control severe outbreaks.

Importance

Anthracnose caused by Colletotrichum sublineolum is a major concern for sorghum farmers, as it can lead to significant yield losses if left unmanaged. Understanding the biology and management of this fungus is crucial for sustainable sorghum production.