Microbial diversity in Brazilian mangrove sediments: a mini review

Abstract

The importance and protection of mangrove ecosystems has been recognized in Brazilian Federal law since 1965. Being protected in law, however, has not always guaranteed their protection in practice. Mangroves are found in coastal and estuarine locations, which are prime real estate for the growth of cities, ports and other economic activities important for Brazilian development. In this mini-review we introduce what mangroves are and why they are so important. We give a brief overview of the microbial diversity found in mangrove sediments and then focus on diversity studies from Brazilian mangroves. We highlight the breadth and depth of knowledge about mangrove microbial communities gained from studying Brazilian mangroves. We report on the exciting findings of molecular microbial ecology methods that have been very successfully applied to study bacterial communities. We note that there have been fewer studies that focus on fungal communities and that fungal diversity studies deserve more attention. The review ends with a look at how a combination of new molecular biology methods and isolation studies are being developed to monitor and conserve mangrove ecosystems and their associated microbial communities. These recent studies are having a global impact and we hope they will help to protect and re-establish mangrove ecosystems.

Electrochemical and microbial monitoring of multi-generational electroactive biofilms formed from mangrove sediment

“…However, the loss observed in electrical performances of the second and third generations of biofilms needed further explanation. Indeed, it was surprisingly conflicting with the studies on EAB generations' performance cited before which were showing performance improvement when a second generation was developed [21][22].…”

“…Among them, mangroves' sediments were described as good inocula for the electrical production by specific bacteria [22][23]. Mangrove-type environments are at the interface between sea and land.…”

“…This is due to a very rapid turnover of the organic matter, but also to location-dependent phenomena such as seasonality (rainy and dry seasons occurring in tropical regions) and tides. Mangroves' sediments constitute a predominantly anaerobic environment, which is an additional characteristic determining the microfauna which composes it [22]. There are very few papers reporting information regarding the microbial diversity of mangrove soils.…”

Screening for Polypropylene Degradation Potential of Bacteria Isolated from Mangrove Ecosystems in Peninsular Malaysia

“…The high temperature, high levels of salinity, pH, and organic matter, as well as low aeration and moisture improves the substrate conditions thereby, making it conducive for the development of diverse bacteria [14]. Such environmental factors typically enhance the availability of wide genera of microbes with diverse potentials that may include polypropylene degradation.…”

Contexto genômico e expressão de genes envolvidos na redução do sulfato em solos de manguezal

“…Consiste em um ambiente único que apresenta condições de alta salinidade e temperatura, muito lodo, solo anaeróbico e rico em matéria orgânica (GHIZELINI et al, 2012;KRAUSS et al, 2014). Dessa forma, o manguezal abriga diversas plantas e microrganismos com adaptações ecofisiológicas para viver nessas condições (ALONGI, 2009, THATOI et al, 2013.…”