Curvularia pallescens

Curvularia pallescens is a soil fungus,[1] that commonly grows on crops found in tropical regions.

On Dichloran Chloramphenicol Malt Agar (DCMA), the colonies are 50–65 mm in diameter, and pale brownish-grey in colour.

Lastly, colonies of C. pallescens grown on Phenylethyl Alcohol Agar (PEA) appear woolly at the centre.

[13] Sulphur and phosphorus are macronutrients involved in the production of DNA, RNA and proteins in fungal species.

[15] Curvularia pallescens acts as a biological reducing agent of AgNO3, resulting in the production of silver nanoparticles (Ag NPs).

[16] Silver nanoparticles have widespread applications in industries such as healthcare, environmental health and drug-gene delivery.

Despite the limited genome sequencing of this fungus,[12] C. pallescens has been found to produce several enzymes with differing immunological and physiological functions in humans.

[12] Curvularia pallescens has been reported to cause subcutaneous,[4][7] pulmonary, and cerebral lesions,[19][1] in immunocompetent individuals.

[9] In addition to human infection, there have been multiple reported cases of leaf spots caused by C. pallescens, in crops.

In particular, infections have occurred in bamboos (such as Bambusa vulgaris, Dendrocalamus longispathus and Thyrsostachys oliveri),[20] sugarcanes, and grasses (such as Imperata arundinacea and Eleusine coracana).

In B. vulgaris, the leaf spots appear circular or irregular in shape with a greyish-black centre and yellow perimeter.

Over time, the spots combine to form necrotic zones at the leaf tips causing dehydration in those areas.