Indigenous PAH-degrading bacteria from oil-polluted sediments in Caleta Cordova, Patagonia Argentina

Response of PAH-degrading genes to PAH bioavailability in the overlying water, suspended sediment, and deposited sediment of the Yangtze River

“…However, few studies have been performed to investigate the relationship between the abundance of the HOC-degrading population using functional degrading genes as biomarkers and the bioavailability of HOCs in aquatic environments. Some researchers have demonstrated that the bioavailability of HOCs directly affects their biodegradation efficiencies (Isaac et al, 2013;Fuentes et al, 2014). Thus, we hypothesized that the bioavailability of HOCs might significantly affect the distribution and abundance of HOC-degrading microorganisms.…”

Pesticide relevance and their microbial degradation: a-state-of-art

“…Large numbers of indigenous microorganisms have been used in many studies for the removal and detoxification of toxicants from the certain environments (Desaint et al 2000;Wang et al 2005). The use of various microorganisms to enhance the rate of biodegradation as well as plant growth promoting activities (production, plant growth hormones biological nitrogen fixation, phosphate solubilization, hydrogen cyanide, siderophore and antagonistic properties) are well documented in various studies (Glick 1995;Vessey 2003;Sakamoto and Tsutsumi 2004;Verma et al 2012;Isaac et al 2013) (Fig. 6).…”

“…Pseudomonas, Marinobacter Salinibacterium and Brevibacterium are able to colonize plant root system and promote plant growth, thus, referred to plant growth promoting microbes. These isolated bacteria from polluted sediment samples degraded the phenanthrene, naphthalene, phenanthrene, and pyrene (Isaac et al 2013). Archetypical naphthalene and catechol dioxygenase genes were found in two isolates belonging to genus Pseudomonas (Pseudomonas monteilii P26 and Pseudomonas xanthomarina N12) which degrades the polycyclic aromatic hydrocarbons (Isaac et al 2013).…”

“…These isolated bacteria from polluted sediment samples degraded the phenanthrene, naphthalene, phenanthrene, and pyrene (Isaac et al 2013). Archetypical naphthalene and catechol dioxygenase genes were found in two isolates belonging to genus Pseudomonas (Pseudomonas monteilii P26 and Pseudomonas xanthomarina N12) which degrades the polycyclic aromatic hydrocarbons (Isaac et al 2013). Pesticide degrading microorganism is an effective indigenous plant growth promoting microorganism (PGPM), which is generally free-living, soil-borne bacterium, isolated from the rhizosphere, when applied to seeds or crops, enhanced the growth of the plant through suppression of plant disease (bioprotectants), improved nutrient acquisition (biofertilizers), production phytohormones (biostimulants) and acting as biopesticides (Vessey 2003) (Fig.…”

Molecular Markers in Hydrocarbon Degradation: State of the Art and Prospective in South America

“…In this sense, bacterial and archaeal diversity in polluted coastal areas of oil-producing countries in South America have been reported (Vieira et al Artigas et al 2008 ) as well as their role in bioremediation (Gomes et al 2008 ; reviewed in Dionisi et al 2012 ). The presence of typical hydrocarbondegrading bacteria inhabiting marine environments is not an exception in coasts of South America (Brito et al 2006 ;dos Santos et al 2011 ;Isaac et al 2013 ). Genera like Pseudomonas , Marinobacterium , Marinobacter , and Cycloclasticus , capable of degrading PAH and Alcanivorax , a specialist in alkane degradation, have been detected or isolated.…”