ABSTRACT GENETICALLY MODIFIED MICROALGAE The present disclosure provides genetically modified Chlorella sorokiniana. DAD1 gene is overexpressed in wild type Chlorella sorokiniana to obtain the genetically modified Chlorella sorokiniana. The genetically modified Chlorella sorokiniana is characterized by increased biomass, increased carrying capacity, reduced clumping, and increased stress tolerance to ultraviolet light and high light intensity, as compared to the wild type Chlorella sorokiniana. The genetically modified Chlorella sorokiniana can be used for the production of industrially important products.