''Colletotrichum sublineola'' is a

plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomy ...

that causes

anthracnose A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticultur ...

wild rice Wild rice, also called manoomin, Canada rice, Indian rice, or water oats, is any of four species of grasses that form the genus ''Zizania'', and the grain that can be harvested from them. The grain was historically gathered and eaten in both ...

and

sorghum ''Sorghum'' () is a genus of about 25 species of flowering plants in the grass family ( Poaceae). Some of these species are grown as cereals for human consumption and some in pastures for animals. One species is grown for grain, while many ot ...

''Colletotrichum sublineola'' (wrongly named for many years as ''Colletotrichum sublineolum''), is the causal agent of sorghum anthracnose, which is one of the most important diseases in sorghum and can cause losses up to 25%.

Symptoms

Symptoms appear as small circular red/orange lesions with distinct margins on the upper portion of the stalks, leaves and seeds. The lesions can measure 2mm-2 cm and can contain dark brown fungal structures. Brown sunken areas can also appear on the stems.

Management

Partners of the CABI-led programme,

Plantwise CABI (legally CAB International, formerly Commonwealth Agricultural Bureaux) is a nonprofit intergovernmental development and information organisation focusing primarily on agricultural and environmental issues in the developing world, and the c ...

recommend several methods for preventing spread of ''C. sublineolum,'' these include; planting two weeks after onset of rains, planting resistant varieties/hybrids and using certified seed from known seed dealers. Crop rotation with other crops including soybean, groundnuts, cowpea and chickpeas can be used to prevent disease spread. The disease can also be controlled by removing or burying crop residues after harvest. It is also recommended by Plantwise partners, including the National Agriculture Research Organization in Uganda to remove alternate hosts such as Johnson grass and any volunteer sorghum plants in the field.

Sources

References

External links

USDA ARS Fungal Database
Culture of Colletotrichum sublineolum

sublineolum Fungal plant pathogens and diseases Cereal diseases Fungi described in 1913 {{Phyllachorales-stub