Elsinoë theae

Elsinoë theae is a species of fungus in the family Elsinoaceae, first described by Hans Sydow and Paul Sydow in 1915. It is known to cause a disease in tea plants, specifically Camellia sinensis, commonly known as the tea plant.

Taxonomy

The species was first described by German mycologists Hans Sydow and Paul Sydow in 1915. The genus name Elsinoë is derived from the Greek word 'elsinos', meaning 'whirlwind', while the species epithet 'theae' refers to its host plant, the tea plant.

Description

Elsinoë theae is a phytopathogenic fungus, meaning it causes disease in plants. The fungus produces ascospores, which are the primary means of dispersal and infection. These ascospores are produced in structures called ascocarps, which are embedded in the plant tissue.

Disease Cycle

The disease cycle of Elsinoë theae begins when ascospores are released from mature ascocarps and dispersed by wind or rain splash. These ascospores then germinate and penetrate the plant tissue, causing infection. The fungus then grows and reproduces within the plant, causing symptoms such as leaf spots and defoliation. Eventually, new ascocarps are formed within the infected plant tissue, completing the disease cycle.

Management

Management of Elsinoë theae involves a combination of cultural practices and chemical control. Cultural practices include the removal and destruction of infected plant material to reduce the source of inoculum. Chemical control involves the use of fungicides to prevent the germination and growth of the fungus.

Economic Impact

As a pathogen of the tea plant, Elsinoë theae has a significant economic impact, particularly in regions where tea is a major crop. The disease caused by this fungus can result in reduced yield and quality of the tea leaves, leading to economic losses for tea growers.

See Also

• List of tea diseases
• Elsinoë fawcettii
• Elsinoë phaseoli