Genome-wide identification and expression pattern of sugar transporter genes in salt tolerant fungus Aspergillus sydowii H-1

Abstract Aspergillus sydowii is a kind of fungus with rich metabolic capacity, halophilic and can cause coral disease. In this paper, 173 sugar transporter genes in A. sydowii H-1 genome were identified and divided into 9 subgroups by bioinformatics method. The transcription levels of these genes were analyzed under different fermentation time and different salt concentration. Combined with protein interaction network analysis, we identified that a glycerol transporter AsSTL1 gene interacted with five MAPK cascade genes: HOG, SSK22, STE11, PBS2 and FUS3. The abundant sugar transporter genes may be an important condition for A. sydowii to survive in extreme marine environment, and also indicate that these sugar transporters respond to low carbon source stress caused by prolonged fermentation cycle and salt stress.