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Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram of seawater has approximately 35 grams (1.2 oz) of dissolved salts. Average density at the surface is 1.025 kg/l. Seawater is denser than both fresh water and pure water because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about −2 °C (28 °F). The coldest seawater still in the liquid state ever recorded was found in 2010, in a stream under an Antarctic glacier: the measured temperature was −2.6 °C (27.3 °F). Seawater pH is typically limited to a range between 7.5 and 8.4. However, there is no universally accepted reference pH-scale for seawater and the difference between measurements based on different reference scales may be up to 0.14 units.
Gallaecimonas is a recently described genus of bacteria. The first described species of this genus was Gallaecimonas pentaromativorans gen. nov., sp. nov. isolated by Rodríguez Blanco et al. in 2010 from intertidal sediments of the ria of Corcubión. It is a Gram-negative, rod-shaped, halotolerant bacterium in the class Gammaproteobacteria. It can degrade high molecular mass polycyclic aromatic hydrocarbons of 4 and 5 rings. The 16S rRNA gene sequences of the type strain CEE_131(T) proved to be distantly related to those of Rheinheimera and Serratia. Its G+C content was 41.7 mol%.
Streptomyces xiamenensis is a bacterium species from the genus of Streptomyces which has been isolated from mangrove sediments in Xiamen in the Fujian Province in China. Streptomyces xiamenensis produces the antifibrotic drug xiamenmycin.
Dyadobacter is a genus of gram negative rod-shaped bacteria belonging to the family Spirosomaceae in the phylum Bacteroidota. Typical traits of the genus include yellow colony colour, positive flexirubin test and non-motile behaviours. They possess an anaerobic metabolism, can utilise a broad range of carbon sources, and test positive for peroxide catalase activity. The type species is Dyadobacter fermentans, which was isolated from surface sterilised maize leaves,.
Altererythrobacter xiamenensis is a Gram-negative and aerobic bacterium from the genus of Altererythrobacter which has been isolated from seawater in Xiamen in China.
Phaeodactylibacter is a genus from the family Lewinellaceae.
Gallaecimonas xiamenensis is a Gram-negative, rod-shaped and motile bacterium from the genus of Gallaecimonas which has been isolated from seawater near the Xiamen Island in China.
Pseudodonghicola is a genus of bacteria from the family of Rhodobacteraceae with one known species. Pseudodonghicola xiamenensis has been isolated from surface seawater from the Taiwan Strait in China.
Youngimonas is a Gram-negative, strictly aerobic, rod-shaped, non-spore-forming and non-motile genus of bacteria from the family of Rhodobacteraceae with one known species. Youngimonas vesicularis has been isolated from seawater from the coast of Kending in Taiwan.
Mangroviflexus is a Gram-positive, non-spore-forming, rod-shaped and obligately anaerobic genus of bacteria from the family of Marinilabiliaceae with one known species. Mangroviflexus xiamenensis has been isolated from mangrove sediments from the Dongzhai Port in China.
Thermophagus is a moderately thermophilic and strictly anaerobic genus of bacteria from the family of Marinilabiliaceae with one known species. Thermophagus xiamenensis has been isolated from sediments from a hot spring from Xiamen in China.
Nonlabens aestuariivivens is a Gram-negative, aerobic and non-motile bacterium from the genus of Nonlabens which has been isolated from tidal flat from Oido.
Nonlabens agnitus is a bacterium from the genus of Nonlabens.
Nonlabens antarcticus is a Gram-negative, strictly aerobic, psychrophilic and rod-shaped bacterium from the genus of Nonlabens which has been isolated from the core of a glacier from the King George Island.
Nonlabens arenilitoris is a Gram-negative, aerobic, non-spore-forming, rod-shaped and non-motile bacterium from the genus of Nonlabens which has been isolated from marine sand from the coast of South Korea.
Nonlabens dokdonensis is a Gram-negative, non-spore-forming, rod-shaped and non-motile bacterium from the genus of Nonlabens which has been isolated from sea water.
Nonlabens halophilus is a Gram-negative, aerobic, non-spore-forming, rod-shaped and non-motile bacterium from the genus of Nonlabens.
Nonlabens marina is a Gram-negative, aerobic and rod-shaped bacterium from the genus of Nonlabens which has been isolated from seawate from the Pacific Ocean.
Nonlabens spongiae is a Gram-negative, strictly aerobic, rod-shaped and motile bacterium from the genus of Nonlabens which has been isolated from a marine sponge from the Bahamas.
Nonlabens ulvanivorans is a Gram-negative, strictly aerobic, rod-shaped, chemoorganotrophic and non-motile bacterium from the genus of Nonlabens which has been isolated from the faeces of the sea slug Aplysia punctata.
References
- 1 2 "Species: Nonlabens xiamenensis". lpsn.dsmz.de.
- 1 2 Huang, Zhaobin; Du, Yaping; Lai, Qiliang; Shao, Zongze (August 2019). "Nonlabens xiamenensis sp. nov., isolated from coastal seawater". Antonie van Leeuwenhoek. 112 (8): 1263–1271. doi:10.1007/s10482-019-01258-8.
- ↑ "Nonlabens xiamenensis". www.uniprot.org.