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1.
Sci Rep ; 10(1): 19990, 2020 11 17.
Article in English | MEDLINE | ID: mdl-33203914

ABSTRACT

Corals are dependent upon lipids as energy reserves to mount a metabolic response to biotic and abiotic challenges. This study profiled lipids, fatty acids, and microbial communities of healthy and white syndrome (WS) diseased colonies of Acropora hyacinthus sampled from reefs in Western Australia, the Great Barrier Reef, and Palmyra Atoll. Total lipid levels varied significantly among locations, though a consistent stepwise decrease from healthy tissues from healthy colonies (HH) to healthy tissue on WS-diseased colonies (HD; i.e. preceding the lesion boundary) to diseased tissue on diseased colonies (DD; i.e. lesion front) was observed, demonstrating a reduction in energy reserves. Lipids in HH tissues were comprised of high energy lipid classes, while HD and DD tissues contained greater proportions of structural lipids. Bacterial profiling through 16S rRNA gene sequencing and histology showed no bacterial taxa linked to WS causation. However, the relative abundance of Rhodobacteraceae-affiliated sequences increased in DD tissues, suggesting opportunistic proliferation of these taxa. While the cause of WS remains inconclusive, this study demonstrates that the lipid profiles of HD tissues was more similar to DD tissues than to HH tissues, reflecting a colony-wide systemic effect and provides insight into the metabolic immune response of WS-infected Indo-Pacific corals.


Subject(s)
Anthozoa/microbiology , Microbiota/genetics , Animals , Cell Proliferation/genetics , Coral Reefs , Immunity/genetics , Lipids/chemistry , RNA, Ribosomal, 16S/genetics , Rhodobacteraceae/genetics
2.
J Venom Res ; 10: 7-12, 2020.
Article in English | MEDLINE | ID: mdl-32566125

ABSTRACT

Phylogenetic evidence is provided for horizontal transfer of a natterin-like toxin encoding gene from fungi into the genome of the coral Acropora digitifera. Sequencing analysis of the coral tissues supported that a fungal taxon predicted to be the most likely gene donor was represented in the coral microbiome. Further bioinformatics data suggested widespread recruitment of the natterin-like gene into venomous terrestrial invertebrates, and repositioning of this gene to non-toxic functions in non-venomous teleost fish.

3.
Int J Clin Exp Hypn ; 68(2): 151-166, 2020.
Article in English | MEDLINE | ID: mdl-32223617

ABSTRACT

The feasibility of mindful hypnotherapy (MH) intervention for stress reduction was investigated in a randomized trial. Forty-two college-age participants with elevated stress were randomized into MH intervention or wait-list control condition. MH participants completed an 8-week intervention with 1-hour individual sessions and self-hypnosis audio recordings for daily mindfulness. Results indicated excellent feasibility, determined by participant satisfaction, treatment adherence (84% compliance rate), and low rate of adverse events (4.5%). There were significant differences between the MH and control groups postintervention, with the mindful hypnotherapy intervention resulting in significant and large decrease in perceived distress, p < .001, 15.35 (1.54), Hedge's g = - 1.14, and increase in mindfulness, p < .001, 50.07 (2.04), Hedge's g = 1.36. This study indicates that MH is a feasible intervention for stress reduction and increasing mindfulness.


Subject(s)
Hypnosis/methods , Mindfulness/methods , Stress, Psychological/therapy , Adolescent , Female , Humans , Male , Pilot Projects , Psychological Tests , Stress, Psychological/psychology , Surveys and Questionnaires , Young Adult
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