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ABSTRACT: Biofilms in extremely acidic soil

PROVIDER: PRJNA543219 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9067750.fastq.gz	Fastqsanger.gz
	SRR9067760.fastq.gz	Fastqsanger.gz
	SRR9067770.fastq.gz	Fastqsanger.gz
	SRR9067780.fastq.gz	Fastqsanger.gz
	SRR9067790.fastq.gz	Fastqsanger.gz

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Project description:The vaginal acidic environment potentiates the formation of Candida glabrata biofilms, leading to complicated and recurrent infections. Importantly, the regulation of biofilm matrix is known to contribute to the recalcitrant features of Candida biofilms. In this study we reveal a new matrix regulator of C. glabrata acidic biofilms, Zap1, and analyzed its modulation of the transcriptome (by microarrays) and matrix proteome (by LC-MS/MS). For that, the deletion mutant zap1Δ and its complemented strain zap1Δ::ZAP1 were constructed and their biofilms were developed at pH 4 (adjusted with lactic acid). The results revealed that Zap1 is a negative regulator of the total amount of protein and carbohydrate in the biofilm matrix. Accordingly, various genes and matrix proteins with predicted functions in the regulation of carbohydrate metabolism, sugar binding, sugar transport and adhesion (including Epa family) were found to be repressed by Zap1. Nevertheless, the results also suggested that Zap1 is essential to the delivery and organization of some matrix components. Indeed, Zap1 was required to the secretion of 122 proteins to the matrix and induced the expression of 557 genes, including various targets involved in glucan-metabolism. Additionally, Zap1 induced targets with roles in virulence, resistance to antifungals and host immunity evasion, including yapsins, ERG family and moonlighting proteins. Zap1 was also required to the secretion of acidic-specific matrix proteins, indicating a contribution to the response to the acidic environment. Overall, this study demonstrates that Zap1 is a relevant regulator of biofilm matrix, contributing to a better understanding of C. glabrata acidic biofilms.

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