Firmicutes dominate the bacterial taxa within sugar-cane processing plants

Abstract

Sugar cane processing sites are characterised by high sugar/hemicellulose levels, available moisture and warm conditions, and are relatively unexplored unique microbial environments. The PhyloChip microarray was used to investigate bacterial diversity and community composition in three Australian sugar cane processing plants. These ecosystems were highly complex and dominated by four main Phyla, Firmicutes (the most dominant), followed by Proteobacteria, Bacteroidetes, and Chloroflexi. Significant variation (p < 0.05) in community structure occurred between samples collected from ‘floor dump sediment’, ‘cooling tower water’, and ‘bagasse leachate’. Many bacterial Classes contributed to these differences, however most were of low numerical abundance. Separation in community composition was also linked to Classes of Firmicutes, particularly Bacillales, Lactobacillales and Clostridiales, whose dominance is likely to be linked to their physiology as ‘lactic acid bacteria’, capable of fermenting the sugars present. This process may help displace other bacterial taxa, providing a competitive advantage for Firmicutes bacteria.

Attenuation of veterinary antibiotics in full-scale vermicomposting of swine manure via the housefly larvae (Musca domestica)

“…2 and Table 2) that occurred during vermicomposting generated an unfavorable environment for anaerobic-prevailing microorganisms as well as microbes that cannot compete with others for the limited nutrients832; and 2) Pathogens cannot survive the gut fluids during the passage of waste through the gut (e.g., earthworms) and are eliminated and/or competitively displaced by the proliferation of other microorganisms3233. The enhanced proportions of these two phyla demonstrate an abundance of such bacteria to regulate hydrolytic enzyme activities for organic breakdown343536. During the bioconversion process, these serial reactions of microorganism-enzyme-waste directly impacted the degradation of manure/vermicompost antibiotics (Fig.…”

Biological ball filters regulate bacterial communities in marron ( Cherax cainii ) culture system

“…), whereas the genus Lactobacillus is the most common probiotic bacteria for aquatic animals and reported to be associated with organic waste decomposition generated from sugar cane industry (Sharmin et al . ). Although the pH, nitrate, nitrite and ammonia of the treated water remained mostly stable, the concentration of DO increased, indicating the improvement of water quality by the Fimucutes bacteria after application of Bio‐ball., Recently Gao et al .…”

“…The bacteria from phylum Firmicutes are known to be involved in nitrification and denitrification process in the aquatic environment and water (Sharmin et al . ; Tian et al . ), whereas the genus Lactobacillus is the most common probiotic bacteria for aquatic animals and reported to be associated with organic waste decomposition generated from sugar cane industry (Sharmin et al .…”

“…Letters in Applied Microbiology 68, 455--463 © 2019 The Society for Applied Microbiology water after Bio-ball treatment. The bacteria from phylum Firmicutes are known to be involved in nitrification and denitrification process in the aquatic environment and water (Sharmin et al 2013;Tian et al 2014), whereas the genus Lactobacillus is the most common probiotic bacteria for aquatic animals and reported to be associated with organic waste decomposition generated from sugar cane industry (Sharmin et al 2013). Although the pH, nitrate, nitrite and ammonia of the treated water remained mostly stable, the concentration of DO increased, indicating the improvement of water quality by the Fimucutes bacteria after application of Bio-ball., Recently Gao et al (2018) reported an ideal combination of microbial community composed of Firmicutes, Bacillus, Planctomycetes, Actinobacter, nitrifying and denitrifying bacteria, lactic acid bacteria, Actinomycetes, Acetobacter and others were found to be highly effective in the bioremediation of polluted river water.…”

Starch- and cellulose-related microbial diversity of soil sown with sugarcane crops in the Papaloapan Basin, a megadiverse region of Mexico

“…Ribotyping was used for the classification of the obtained OTUs that were assigned to a species level in some cases, or at least to a complex of really close species (Figures 1, 2 Acidobacteria (23%), Bacteroides (12%) and Firmicutes (10%) as the principal reported phylum proportion (Pisa et al, 2011;Sharmin et al, 2013). Differences could exist due to type of soil and the methodology used.…”