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Transcriptome analysis of Dunaliella salina on carotenoid biosynthesis under red and blue light induction

ABSTRACT: Transcriptome analysis of Dunaliella salina on carotenoid biosynthesis under red and blue light induction

PROVIDER: PRJNA526058 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8697960_1.fastq.gz	Fastqsanger.gz
	SRR8697960_2.fastq.gz	Fastqsanger.gz
	SRR8697961_1.fastq.gz	Fastqsanger.gz
	SRR8697961_2.fastq.gz	Fastqsanger.gz
	SRR8697962_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis of Dunaliella salina on carotenoid biosynthesis under red and blue light induction

Project description:Light quality is an important abiotic factor that affects growth and development of photosynthetic organism. In this study, D. salina was exposed to red (660 nm) and blue light (450 nm), and cell growth, pigments, and transcriptome were analyzed. The RNA of D. salina was sequenced and transcriptomic response of algal cells after transitioning from white light to red and blue light was investigated. Genes encoding for enzymes involved in photosynthesis were down-regulated, whereas genes involved in the metabolism of carotenoid were up-regulated. Genes encoding for photoprotective enzymes related to reactive oxygen species scavenging were up-regulated under both red and blue light. The present transcriptomic study would assist in the comprehensive understanding of carotenoid biosynthesis of D. salina.

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Project description:The unicellular green alga Dunaliella salina is an attractive model organism for studying photoacclimation responses. Changes in irradiance levels during cell growth affect the organization and structure of the photosystem and the pigments composition. We sequenced the RNA of D. salina to investigate the transcriptomic response of the organism after transitioning from normal light conditions to higher light intensity. Specific transcripts encoding for enzymes involved in photosynthesis were down-regulated, whereas genes involved in the metabolism of carotenoid and triacylglycerol were up-regulated. Genes encoding for photoprotective enzymes related to reactive oxygen species (ROS) scavenging and to the xanthophyll cycle were also up-regulated at higher irradiance levels. The present transcriptomic study would assist in the comprehensive understanding of photoacclimation mechanisms of D. salina.

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