Heavy metals contamination of the Quaternary coral reefs, Red Sea coast, Egypt

El‐Sorogy, Abdelbaset S.; Mohamed, Mohamed A.; Nour, Hamdy E.

doi:10.1007/s12665-012-1535-0

Cited by 54 publications

(13 citation statements)

References 24 publications

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“…Interestingly, a large fraction of these genes were also lost in the genome of Prochlorococcus marinus CCMP1375. Cyanobacteria are a large and highly diverse group of photosynthetic prokaryotes which can adapt to various habitats, including those containing natural and artificial antibiotics and heavy metals ( 37 ). Resistance to these toxins in open water is important for the survival of these organisms ( 38 ).…”

Section: Resultsmentioning

confidence: 99%

Symbiotic Adaptation Drives Genome Streamlining of the Cyanobacterial Sponge Symbiont “ Candidatus Synechococcus spongiarum”

Gao

Wang

Tian

et al. 2014

mBio

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ABSTRACT“Candidatus Synechococcus spongiarum” is a cyanobacterial symbiont widely distributed in sponges, but its functions at the genome level remain unknown. Here, we obtained the draft genome (1.66 Mbp, 90% estimated genome recovery) of “Ca. Synechococcus spongiarum” strain SH4 inhabiting the Red Sea sponge Carteriospongia foliascens. Phylogenomic analysis revealed a high dissimilarity between SH4 and free-living cyanobacterial strains. Essential functions, such as photosynthesis, the citric acid cycle, and DNA replication, were detected in SH4. Eukaryoticlike domains that play important roles in sponge-symbiont interactions were identified exclusively in the symbiont. However, SH4 could not biosynthesize methionine and polyamines and had lost partial genes encoding low-molecular-weight peptides of the photosynthesis complex, antioxidant enzymes, DNA repair enzymes, and proteins involved in resistance to environmental toxins and in biosynthesis of capsular and extracellular polysaccharides. These genetic modifications imply that “Ca. Synechococcus spongiarum” SH4 represents a low-light-adapted cyanobacterial symbiont and has undergone genome streamlining to adapt to the sponge’s mild intercellular environment.

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Section: Resultsmentioning

confidence: 99%

Symbiotic Adaptation Drives Genome Streamlining of the Cyanobacterial Sponge Symbiont “ Candidatus Synechococcus spongiarum”

Gao

Wang

Tian

et al. 2014

mBio

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“…The main sources of Pb in the marine environment are from storm water runoff from hinterland and sewage input (Peters et al, 1997;El-Sorogy et al, 2012). Sorption of lead by sediment is correlated to the organic content, the grain size and the anthropogenic pollution (Huang and Lin, 2003;Muniz et al, 2004).…”

Section: Leadmentioning

confidence: 99%

“…Heavy metals can enter into the coastal environments from different sources including natural weathering processes and anthropogenic activities (Sadiq and Alam, 1989;Sadiq et al, 1992;Ziko et al, 2001;Abd El-Wahab and El-Sorogy, 2003;Krishna and Govil, 2007;Badr et al, 2009;Venkatramanan et al, 2012;Garali et al, 2010;Madkour, 2013;El-Sorogy et al, 2012, 2013a. Many studies have been dealt with fauna, environmental assessment, and sedimentology of the Arabian and Oman gulfs (Dance and Eames, 1966;Dance et al, 1992;Bosch et al, 1995;Al-Homaidan, 2006;Loughland et al, 2012;El-Sorogy et al, 2015;Almasoud et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessment of heavy metal contamination in intertidal gastropod and bivalve shells from central Arabian Gulf coastline, Saudi Arabia

El‐Sorogy

Youssef

2015

Journal of African Earth Sciences

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“…Intensive studies have been done on the Pleistocene marine terraces along the Red Sea coast and their Suez and Aqaba gulfs from different points of view, e.g., geology and biology (Behairy, Sheppard, & El‐Sayed, ; Walther, ), carbonate diagenesis (Friedman, ; Gvirtzman, Friedman, & Miller, ; Gvirtzman & Friedman, ; Friedman & Brenner, ; Dullo, , ; El‐Sorogy, ), fossil record and facies analysis (Alexandroff, Zuschin, & Kroh, ; Al‐Rifaii & Cherif, ; Casazza, ; Dullo, ; El‐Sorogy, , ; Manaa, ; Taviani, Montagna, Rasul, Angeletti, & Bosworth, ), palaeontology and depositional environments (Ziko & El‐Sorogy, ; El‐Sorogy, ; Mandurah, ; Khalil, ), and environmental geology (Abd El‐Wahab & El‐Sorogy, ; El‐Sorogy, Abdelwahab, & Nour, ; El‐Sorogy, Nour, Essa, & Tawfik, ).…”

Section: Introductionmentioning

confidence: 99%

Biofacies and diagenetic alterations of the Pleistocene coral reefs, northwest Red Sea coast, Saudi Arabia

et al. 2019

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Middle to Late Pleistocene coral reefs stretch in three discontinuously elevated units above the present sea level between Duba and Sharma along the Red Sea coast, northwest Saudi Arabia. They correspond to MIS 5, MIS 7, and MIS 9 of the deep sea cores. Each unit exhibits prominent terraces as a result of the onlap during different sea levels, erosion during transgression, and tectonic uplift. Framestones, bafflestones, bindstones, packstones, grainstones and floatstones of coral, algal, and other bioclasts are the main microfacies types recorded from these reefal units and their internal sediment. The lower and the upper units exhibited a vertical pattern of a transgressive sequence, starting at the base with a coral assemblage of coral rock zone and graded into the upper reef slope community at the top, while the middle one exhibited a regressive sequence. Corals progressively changed from aragonite in the lower unit to calcite in the upper one by meteoric leaching of the trabeculae, and the cements changed from marine aragonitic needles and peloidal Mg‐calcite in the lower unit to blocky and dog teeth cements and silica in the middle and upper units. The gravel lenses within coral colonies of the upper unit with plagioclase, epidote, and fractured quartz grains are attributed to a granitic province from the hinterland mountains, driven to the reef during rainy periods.

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Heavy metals contamination of the Quaternary coral reefs, Red Sea coast, Egypt

Cited by 54 publications

References 24 publications

Symbiotic Adaptation Drives Genome Streamlining of the Cyanobacterial Sponge Symbiont “ Candidatus Synechococcus spongiarum”

Symbiotic Adaptation Drives Genome Streamlining of the Cyanobacterial Sponge Symbiont “ Candidatus Synechococcus spongiarum”

Assessment of heavy metal contamination in intertidal gastropod and bivalve shells from central Arabian Gulf coastline, Saudi Arabia

Biofacies and diagenetic alterations of the Pleistocene coral reefs, northwest Red Sea coast, Saudi Arabia

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