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Reduced seawater pH alters marine biofilms with impacts for marine polychaete larval settlement

ABSTRACT: Reduced seawater pH alters marine biofilms with impacts for marine polychaete larval settlement Metagenome

PROVIDER: PRJNA661961 | ENA |

REPOSITORIES: ENA

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Interdependent photo- and chemosensory systems regulate larval settlement in a marine sponge

Project description:Marine pelagic larvae from throughout the animal kingdom use a hierarchy of environmental cues to identify a suitable benthic habitat on which to settle and metamorphose into the reproductive phase of the life cycle. The majority of larvae are induced to settle by biochemical cues and many species have long been known to preferentially settle in the dark. Combined, these data suggest that larval responses to light and biochemical cues may be linked, but this is yet to be explored at the molecular level. Here, we track vertical position of larvae of the sponge Amphimedon queenslandica to show that they descend to the benthos at twilight, by which time they are competent to respond to biochemical cues, consistent with them naturally settling in the dark. We then conduct larval settlement assays under three different light regimes (natural day-night, constant dark or constant light), and use transcriptomics on individual larvae to identify candidate molecular pathways underlying the different settlement responses that we observe. We find that constant light prevents larval settlement in response to biochemical cues, likely via actively repressing chemostransduction; this is consistent with the sustained upregulation of a photosensory cryptochrome and two putative inactivators of G-protein signalling in the constant light only. We hypothesise that photo- and chemosensory systems may be hierarchically integrated into ontogeny to regulate larval settlement via nitric oxide (NO) and cyclic guanosine monophosphate (cGMP) signalling in this sponge that belongs to one of the earliest branching of the extant animal lineages.

2019-10-09 | GSE130274 | GEO

Interdependent photo- and chemosensory systems regulate larval settlement in a marine sponge

Project description:Interdependent photo- and chemosensory systems regulate larval settlement in a marine sponge

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Sponge larval settlement cues: the role of microbial biofilms in a warming ocean.

Project description: Not available

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Monospecific Biofilms of Pseudoalteromonas Promote Larval Settlement and Metamorphosis of Mytilus coruscus.

Project description: Not available

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Molecular response of the coral Acropora millepora to three settlement and/or metamorphosis induced stimuli

Project description:Two known settlement/metamorphosis inducing stimuli (crustose coralline algae, and ethanolic extract of crustose coralline algae) and one stimulus which just induces metamorphosis (LWamide) were used to stimulate competent planula larvae of the coral Acropora millepora. Samples were taken 0.5h, 4h and 12h post induction isolate the genes controlling settlement and metamorphosis in this coral.

2009-12-07 | GSE11709 | GEO

Larval settlement and metamorphosis in a marine gastropod in response to multiple conspecific cues.

Project description: Not available

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Identification of recombinant settlement-inducing protein complex from Amphibalanus amphitrite by LC-MS/MS

Project description:Settlement-inducing protein complex (SIPC) is a protein that acts as a phoromone cue to attract conspecific of the barnacle Amphibalanus amphitrite to settle on a substrate. Recombinant settlement-inducing protein complex was expressed in insect Sf9 cells through a baculovirus overexpression system, purified and analysed by mass spectrometry to confirm its identity.

2019-01-07 | PXD006858 | Pride

Settlement of Polynesia

Project description:Genotypes used to reconstruct the settlement timings and paths of Polynesia.

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Marine biofilms

Project description:Bacterial community structure of early-stage marine biofilms on various artificial substrata.

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Project description:One-week marine biofilms grown on elasnin-based coatings subjected to proteomics analysis.

2023-06-21 | PXD034385 | Pride