Mangrove health along the hyper-arid southern Red Sea coast of Saudi Arabia

Arshad, Muhammad; Eid, Ebrahem M.; Hasan, Mudassir

doi:10.1007/s10661-020-8140-6

Cited by 25 publications

(13 citation statements)

References 65 publications

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“…Additionally, genome analysis confirmed the presence of genes encoding for osmoprotectant biosynthesis or transport (Table S2), such as the genes for proline (proABC, HW532_13700, HW532_17195 and HW532_137005), ectoine (lysC, HW532_10325) and betaine and choline (betA, HW532_01520) and for a glycine betaine/proline transport system (proVWX, HW532_05850-60), as well as genes associated with the synthesis of phytoene, a carotenoid precursor, via the nonmevalonate pathway. These compounds are used by R1DC25 T to adapt to the conditions of osmotic stress and the harsh mangrove environment [8,10,68], thus allowing survival in the salty sediments of the mangroves, where salinity can reach 15 % in summer [10]. The basic nature of the proteome, which has an average isoelectric point of 6.63, is similar to that of Desulfohalobium retbaense (6.5), a halophilic strain that uses the same osmoprotective mechanisms [69].…”

Section: Phylogeny Based On the 16s Rrna Gene And Genome Sequencesmentioning

confidence: 99%

“…In the present study, we used this novel approach to investigate the microbial diversity of the subtropical mangrove sediments in the arid environment of the coast of the Red Sea, an unexplored natural ecosystem. Mangrove forests are highly productive ecosystems and are widespread in tropical and subtropical coastlines, with a coverage of 60-70 % [6][7][8][9]. Mangroves represent unique ecological niches as they host a diverse variety of microorganisms [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Kaustia mangrovi gen. nov., sp. nov. isolated from Red Sea mangrove sediments belongs to the recently proposed Parvibaculaceae family within the order Rhizobiales

Sefrji

Marasco

Michoud

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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We isolated a novel strain, R1DC25T, described as Kaustia mangrovi gen. nov. sp. nov. from the sediments of a mangrove forest on the coast of the Red Sea in Saudi Arabia. This isolate is a moderately halophilic, aerobic/facultatively anaerobic Gram-stain-negative bacterium showing optimum growth at between 30 and 40 °C, at a pH of 8.5 and with 3–5 % NaCl. The genome of R1DC25T comprises a circular chromosome that is 4 630 536 bp in length, with a DNA G+C content of 67.3 mol%. Phylogenetic analyses based on the 16S rRNA gene sequence and whole-genome multilocus sequence analysis of 120 concatenated single-copy genes revealed that R1DC25T represents a distinct lineage within the family Parvibaculaceae in the order Rhizobiales within the class Alphaproteobacteria . R1DC25T showing 95.8, 95.3 and 94.5 % 16S rRNA gene sequence identity with Rhodoligotrophos appendicifer , Rhodoligotrophos jinshengii and Rhodoligotrophos defluvii , respectively. The predominant quinone was Q-10, and the polar lipids were phosphatidylglycerol, phosphatidylcholine, diphosphatidylglycerol, as well as several distinct aminolipids and lipids. The predominant cellular fatty acids were C19 : 0 cyclo ω8c, a combination of C18 : 1 ω7c and/or C18 : 1 ω6c and C16 : 0. On the basis of the differences in the phenotypic, physiological and biochemical characteristics from its known relatives and the results of our phylogenetic analyses, R1DC25T (=KCTC 72348T;=JCM 33619T;=NCCB 100699T) is proposed to represent a novel species in a novel genus, and we propose the name Kaustia mangrovi gen. nov., sp. nov. (Kaustia, subjective name derived from the abbreviation KAUST for King Abdullah University of Science and Technology; mangrovi, of a mangrove).

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Section: Phylogeny Based On the 16s Rrna Gene And Genome Sequencesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kaustia mangrovi gen. nov., sp. nov. isolated from Red Sea mangrove sediments belongs to the recently proposed Parvibaculaceae family within the order Rhizobiales

Sefrji

Marasco

Michoud

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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“…S2b), indicating that the strain was halophilic [48]. This result revealed an adaptation to/dependence on the saline conditions of the mangrove sediments of the Red Sea, in which dilution with freshwater never occurs because of the extremely limited freshwater input (no rivers and extremely rare rainfall), and the sediments are cyclically water-logged by seawater during tides [6, 49]. The carbon sources used by R1DC9 T for growth included pectin, 2-deoxy- d -ribose, d -ribose, 5-keto- d -gluconic acid, l -ornithine and dihydroxyacetone.…”

Section: Morphological Physiological and Chemotaxonomic Characterizationmentioning

confidence: 99%

Mangrovivirga cuniculi gen. nov., sp. nov., a moderately halophilic bacterium isolated from bioturbated Red Sea mangrove sediment, and proposal of the novel family Mangrovivirgaceae fam. nov.

Sefrji

Michoud

Marasco

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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A strictly aerobic, Gram-stain-negative, non-motile, rod-shaped bacterium, designated strain R1DC9T, was isolated from sediments of a mangrove stand on the Red Sea coast of Saudi Arabia via diffusion chamber cultivation. Strain R1DC9T grew at 20–40 °C (optimum, 37 °C), pH 6–10 (optimum, pH 8) and 3–11 % NaCl (optimum, 7–9 %) in the cultivation medium. The genome of R1DC9T was 4 661 901 bp long and featured a G+C content of 63.1 mol%. Phylogenetic analyses based on the 16S rRNA gene sequence and whole-genome multilocus sequence analysis using 120 concatenated single-copy genes revealed that R1DC9T represents a distinct lineage in the order Cytophagales and the phylum Bacteroidetes separated from the Roseivirgaceae and Marivirgaceae families. R1DC9T displayed 90 and 89 % 16S rRNA gene sequence identities with Marivirga sericea DSM 4125T and Roseivirga ehrenbergii KMM 6017T, respectively. The predominant quinone was MK7. The polar lipids were phosphatidylethanolamine, two unknown phospholipids and two unknown lipids. The predominant cellular fatty acids were the saturated branch chain fatty acids iso-C15 : 0, iso-C17 : 0 3-OH and iso-C17 : 0, along with a low percentage of the monounsaturated fatty acid C16 : 1 ω5c. Based on differences in phenotypic, physiological and biochemical characteristics from known relatives, and the results of phylogenetic analyses, R1DC9T (=KCTC 72349T=JCM 33609T=NCCB 100698T) is proposed to represent a novel species in a new genus, and the name Mangrovivirga cuniculi gen. nov., sp. nov. is proposed. The distinct phylogenetic lineage among the families in the order Cytophagales indicates that R1DC9T represents a new family for which the name Mangrovivirgaceae fam. nov. is proposed.

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“…Mangroves can be found in almost all of the Indonesian archipelago, the widest distribution of mangroves is in Irian Jaya with an area of 1,350,600 Ha (38%), Kalimantan with an area of 978,200 Ha (28%), and Sumatra with an area of 673,300 Ha (19%). In other areas, mangroves will grow and develop well on beaches that have large and protected river mouths (Andriansah et , 2020;Noor et al, 2006), as well as small waves.…”

Section: A Introductionmentioning

confidence: 99%

“…One of the contributing factors is humans, namely due to the construction of facilities and the increasing human population (Cissell et al, 2018). In addition, dredging for reclamation also has an impact on mangrove forest damage (Arshad et al, 2020).…”

Section: A Introductionmentioning

confidence: 99%

Mangrove Health Analysis Using Sentinel-2A Image with NDVI Classification Method

Purwanto

Eviliyanto

2021

geoeco

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This study aims to determine 1) the mangrove vegetation density index, 2) the health of mangrove plants in Sungai Batang Village to Kuala Secapah. The data used in this study is the image of Sentinel-2A, dated June 8, 2020. The data taken are vegetation density (NDVI) and mangrove health. The method in this study uses the vegetation index transformation (NDVI). Data analysis used the supervised classification method and the vegetation density index (NDVI). The results showed that the NDVI value of -1 – 0.32 indicates a sparse vegetation density, a value of 0.33 – 0.42 indicates a medium density and 0.43 – 1 indicates a dense density. From this NDVI index value, it can be used as a basis for classifying the health of mangrove vegetation. The health of mangrove vegetation based on the vegetation index value of 0.43 – 1 (meet) indicates that the health of the mangrove vegetation is very good. Vegetation value 0.33 – 0.42 (moderate) indicates good health of mangrove vegetation and vegetation index value -1 – 0.32 (rare) indicates poor vegetation health. Mangrove health level is very good with an area of 3.0314 km2, healthy has an area of 0.204806 km2 and poor health has an area of 0.625875 km2.

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Mangrove health along the hyper-arid southern Red Sea coast of Saudi Arabia

Cited by 25 publications

References 65 publications

Kaustia mangrovi gen. nov., sp. nov. isolated from Red Sea mangrove sediments belongs to the recently proposed Parvibaculaceae family within the order Rhizobiales

Kaustia mangrovi gen. nov., sp. nov. isolated from Red Sea mangrove sediments belongs to the recently proposed Parvibaculaceae family within the order Rhizobiales

Mangrovivirga cuniculi gen. nov., sp. nov., a moderately halophilic bacterium isolated from bioturbated Red Sea mangrove sediment, and proposal of the novel family Mangrovivirgaceae fam. nov.

Mangrove Health Analysis Using Sentinel-2A Image with NDVI Classification Method

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