Phyllosticta mortonii

Phyllosticta mortonii is a species of fungus in the family Phyllostictaceae. It is a plant pathogen that primarily affects the Morton Bay Fig tree, from which it derives its name.

Taxonomy

The species was first described in 1961 by mycologist John Sydney Karling. It belongs to the genus Phyllosticta, which comprises over 1000 species of fungi. The specific epithet mortonii is in honor of the Morton Bay Fig tree, the primary host of this fungus.

Description

Phyllosticta mortonii is a ascomycete fungus, meaning it reproduces through the formation of structures called asci, which contain spores known as ascospores. The fungus is characterized by its dark, almost black coloration and its ability to cause leaf spots on its host plants.

Distribution and habitat

Phyllosticta mortonii is found primarily in Australia, where the Morton Bay Fig tree is native. It thrives in warm, humid climates and is most commonly found in coastal regions.

Pathogenicity

As a plant pathogen, Phyllosticta mortonii causes a disease known as leaf spot, which is characterized by the appearance of dark, necrotic spots on the leaves of the host plant. The disease can lead to premature leaf drop and, in severe cases, death of the plant.

Management

Management of Phyllosticta mortonii involves the use of fungicides and cultural practices such as pruning and sanitation to remove infected plant material. In some cases, resistant varieties of the Morton Bay Fig tree may be planted to prevent infection.

See also

• List of Phyllosticta species
• Plant pathology