+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Gene expression profiles during short-term heat stress; branching vs. massive Scleractinian corals of the Red Sea

, : Gene expression profiles during short-term heat stress; branching vs. massive Scleractinian corals of the Red Sea. Peerj 4: E1814-E1814

It is well-established that there is a hierarchy of susceptibilities amongst coral genera during heat-stress. However, molecular mechanisms governing these differences are still poorly understood. Here we explored if specific corals possessing different morphologies and different susceptibilities to heat stress may manifest varied gene expression patterns. We examined expression patterns of seven genes in the branching corals Stylophora pistillata and Acropora eurystoma and additionally in the massive robust coral, Porites sp. The tested genes are representatives of key cellular processes occurring during heat-stress in Cnidaria: oxidative stress, ER stress, energy metabolism, DNA repair and apoptosis. Varied response to the heat-stress, in terms of visual coral paling, algal maximum quantum yield and host gene expression was evident in the different growth forms. The two branching corals exhibited similar overall responses that differed from that of the massive coral. A. eurystoma that is considered as a susceptible species did not bleach in our experiment, but tissue sloughing was evident at 34 °C. Interestingly, in this species redox regulation genes were up-regulated at the very onset of the thermal challenge. In S. pistillata, bleaching was evident at 34 °C and most of the stress markers were already up-regulated at 32 °C, either remaining highly expressed or decreasing when temperatures reached 34 °C. The massive Porites species displayed severe bleaching at 32 °C but stress marker genes were only significantly elevated at 34 °C. We postulate that by expelling the algal symbionts from Porites tissues, oxidation damages are reduced and stress genes are activated only at a progressed stage. The differential gene expression responses exhibited here can be correlated with the literature well-documented hierarchy of susceptibilities amongst coral morphologies and genera in Eilat's coral reef.


PMID: 27069783

DOI: 10.7717/peerj.1814

Other references

Volkoff, B.; Matsui, E.; Cerri, C.C., 1982: Isotopic carbon differentiation in the humus of latosols and podzols of the Amazonian region of Brazil. Variations in 13C/12C ( delta 13C) and in humus composition were studied in two Podzol profiles and three Latosols of the Manaus region. For humus characterization, the relative proportions of the humic fractions were determined using a selective...

Davis, L.S.; Miller, G.D., 1992: Satellite tracking of Adelie penguins. Female Adelie penguins (Pygoscelis adeliae) that take too long on their first post-laying foraging trip are a major cause of breeding failure, but in the ice-filled waters of Antarctica, determining where they go and why they are away so long has...

Amgwerd, R., 1962: The mediastinoscopy, a sure method in the diagnosis of disease of the lungs and of the mediastinum 42nd Meeting of the Swiss Scientific Society against Tuberculoses and the Swiss Society of Medical Specialists in Tuberculoses, Fribourg, Switzerland, 1962. The technique and indications of mediastinoscopy for diseases of the lungs and of the mediastinum are discussed. The mediastinal, bronchopulmonal, tracheobronchial and paratracheal lymphnodes or tumors of the dorsal mediastinum are palpated and bi...

El'konin, L.A.; Tyrnov, V.S., 2000: Genetic control of cytoplasmic male sterility in plants: state of the problem and current approaches. The organization and functions of genetic systems controlling cytoplasmic male sterility (CMS) in plants are reviewed. Mitochondrial genes that code for specific proteins disturbing the functions of mitochondria have been found by comparisons betw...

Amore, G.; Bonavita, V., 1970: Enzyme changes in experimental isoniazid neuropathy. Brain Research 21(3): 455-459

Stowe, R.R., 1985: Hydrologic characteristics of backfill materials. AMAX Coal Company has reconstructed a portion of a sand aquifer at the Belle Ayr mine. Premining hydrologic conductivity (permeability) of this sand was 14 gallons/day ftsuperscript 2. Slug testing the reconstructed sand aquifer yielded a permeabi...

Nassar, N.M.A., 2002: Keeping options alive and threat of extinction: a survey of wild cassava survival in its natural habitat. Wild cassava, Manihot spp., are sources of many useful characters. Their occurrence in natural habitats is diminishing and a number of them almost have come to extinction. This paper presents the results of occurrence survey of these species in th...

Anonymous, 1953: STAFF conference Vanderbilt University Hospital; anorexia nervosa. Journal of the Tennessee State Medical Association. Tennessee State Medical Association 46(9): 330-337

Leconte, D.; Renault, D.; Godefroy, Y.; Charbonnel, E.; Van Kote, G., 1988: Simple cysts of the testis in children. Apropos of 2 cases. Reporting two cases of simple testicular cysts in children, the authors analyse these rare benign tumors (9 other cases in literature). The cystic dilatation first affect the rete testis, it can be partial (simple cyst) or extensive (multicystic d...

Ballantyne, J.C.; Fleisher, L.A., 2010: Ethical issues in opioid prescribing for chronic pain. Pain 148(3): 365-367