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Seawater, Pocillopora damicornis and Galaxea fascicularis

ABSTRACT: Symbiodiniaceae communities in seawater and coral samples

PROVIDER: PRJNA940648 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23815200_1.fastq.gz	Fastqsanger.gz
	SRR23815200_2.fastq.gz	Fastqsanger.gz
	SRR23815300_1.fastq.gz	Fastqsanger.gz
	SRR23815300_2.fastq.gz	Fastqsanger.gz
	SRR23815201_1.fastq.gz	Fastqsanger.gz

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Project description:Reef-building corals live in a mutualistic relationship with photosynthetic algae (family Symbiodiniaceae) that usually provide the bulk of the energy required by the coral host. This relationship is very sensitive to temperature stress, with as little as 1°C increase above mean in sea surface temperatures (SSTs) often leading to the collapse of the association. The meta-stability of these associations has led to interest in the potential of more stress tolerant algae to supplement or substitute for the normal Symbiodiniaceae mutualists. In this respect, the apicomplexan-like microalga Chromera is of particular interest as it is considerably more temperature tolerant than are most members of the Symbiodiniaceae. Here we generated a de novo transcriptome for a Chromera strain isolated from a GBR coral (“GBR Chromera”) and compared to those of the reference strain of Chromera (“Sydney Chromera”), and to those of Symbiodiniaceae algae (Fugacium, Cladocopium and Breviolum), as well as the apicomplexan parasite, Plasmodium falciparum. By contrast with the Symbiodiniaceae, the two Chromera strains had a high level of sequence similarity evident by very low levels of divergence in orthologous genes. Although surveys of specific KEGG categories provided few general criteria by which true coral mutualists might be identified, they provide a molecular rationalization for the near ubiquitous association of Cladocopium strains with Indo-Pacific reef corals in general and with Acropora spp. in particular. In addition, HSP20 genes may underlie the higher thermal tolerance shown by Chromera compared to Symbiodiniaceae

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| S-EPMC4435422 | biostudies-literature

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