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Black sigatoka is a leaf-spot disease of banana plants caused by the ascomycete fungus Mycosphaerella fijiensis (Morelet), also known as black leaf streak.It was discovered in 1963 and named for its similarities with yellow Sigatoka, which is caused by Mycosphaerella musicola (Mulder), which was itself named after the Sigatoka Valley in Fiji.
After this the infection will continue to colonize for a week before the plant exhibits symptoms. The initial symptoms are small spots on the undersides of the leaves. These appear 10–15 days after infection and grow until they appear as black streaks on the leaves. This is what gives black sigatoka its alternate name of black leaf streak. [41]
For example, Black Sigatoka, an economically important pathogen of banana, is resistant to the QoI fungicides, due to a single nucleotide change resulting in the replacement of one amino acid (glycine) by another (alanine) in the target protein of the QoI fungicides, cytochrome b. [9]
The Sigatoka disease complex consists of three fungi of banana: Mycosphaerella fijiensis – Black sigatoka; Mycosphaerella musicola – Yellow sigatoka;
A new species even more aggressive than Black Sigatoka and spreading in Asia and the Indian Ocean. Sheath rot Nectria foliicola Mycosphaerella musicola Pseudocercospora musae Sooty mold Limacinula tenuis: Speckle Mycosphaerella musae: Squirter (black end disease) Nigrospora sphaerica: Stem-end rot Colletotrichum musae: Trachysphaera finger rot
Sigatoka leaf spot disease (SD) is a disease of bananas and is caused by the ascomycetous fungus, Mycosphaerella musicola.This pathogen can be distinguished morphologically from Mycosphaerella fijiensis, which causes black leaf streak disease (BLSD), by the characteristics of the conidia and conidiophore.
Banana freckle is a disease caused by the fungus Guignardia musae or Phyllosticta musarum . [1] Generally, the causal agent of disease is referred to as Guignardia-Phyllosticta sp. There are several different strains of the fungus that exist to infect different banana varieties around the globe.
Amazonia (fungus) Amphobotrys ricini; Anguillosporella vermiformis; ... Black rot on orchids; Black sigatoka; Blakeslea trispora; Blumeria graminis; Boeremia lycopersici;
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