Insect gut bacteria: a promising tool for enhanced biogas production

2022 ◽  
Author(s):  
Binoy Kumar Show ◽  
Sandipan Banerjee ◽  
Aishiki Banerjee ◽  
Richik GhoshThakur ◽  
Amit Kumar Hazra ◽  
...  
Keyword(s):  
Biogas Production ◽  
Gut Bacteria ◽  
Promising Tool ◽  
Insect Gut ◽  
Insect Gut Bacteria

Insect Gut Bacteria and Iron Metabolism in Insects

2021 ◽  
pp. 343-366
Author(s):  
Mahesh S. Sonawane ◽  
Rahul C. Salunkhe ◽  
R.Z. Sayyed
Keyword(s):  
Iron Metabolism ◽  
Gut Bacteria ◽  
Insect Gut ◽  
Insect Gut Bacteria

scholarly journals Bioactivities of rose-scented geranium nanoemulsions against the larvae of Anopheles stephensi and their gut bacteria

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246470
Author(s):  
Maryam Dehghankar ◽  
Naseh Maleki-Ravasan ◽  
Azar Tahghighi ◽  
Fateh Karimian ◽  
Mohsen Karami
Keyword(s):  
Larvicidal Activity ◽  
Anopheles Stephensi ◽  
Antibacterial Properties ◽  
Gut Bacteria ◽  
Morphological Properties ◽  
Tem Analysis ◽  
Wide Range ◽  
Insect Gut ◽  
Insect Gut Bacteria ◽  
Chemical Pesticides

Anopheles stephensi with three different biotypes is a major vector of malaria in Asia. It breeds in a wide range of habitats. Therefore, safer and more sustainable methods are needed to control its immature stages rather than chemical pesticides. The larvicidal and antibacterial properties of the Pelargonium roseum essential oil (PREO) formulations were investigated against mysorensis and intermediate forms of An. stephensi in laboratory conditions. A series of nanoemulsions containing different amounts of PREO, equivalent to the calculated LC50 values for each An. stephensi form, and various quantities of surfactants and co-surfactants were developed. The physical and morphological properties of the most lethal formulations were also determined. PREO and its major components, i.e. citronellol (21.34%), L-menthone (6.41%), linalool (4.214%), and geraniol (2.19%), showed potent larvicidal activity against the studied mosquitoes. The LC50/90 values for mysorensis and intermediate forms were computed as 11.44/42.42 ppm and 12.55/47.69 ppm, respectively. The F48/F44 nanoformulations with 94% and 88% lethality for the mysorensis and intermediate forms were designated as optimized formulations. The droplet size, polydispersity index, and zeta-potential for F48/F44 were determined as 172.8/90.95 nm, 0.123/0.183, and -1.08/-2.08 mV, respectively. These results were also confirmed by TEM analysis. Prepared formulations displayed antibacterial activity against larval gut bacteria in the following order of decreasing inhibitory: LC90, optimized nanoemulsions, and LC50. PREO-based formulations were more effective against mysorensis than intermediate. Compared to the crude PREO, the overall larvicidal activity of all nanoformulations boosted by 20% and the optimized formulations by 50%. The sensitivity of insect gut bacteria may be a crucial factor in determining the outcome of the effect of toxins on target insects. The formulations designed in the present study may be a good option as a potent and selective larvicide for An. stephensi.

scholarly journals Synergism of gut microbiota to double-stranded RNAs in RNA interference of a leaf beetle

2019 ◽  
Author(s):  
Letian Xu ◽  
Shijing Xu ◽  
Liuwei Sun ◽  
Yiqiu Zhang ◽  
Jing Luo ◽  
...  
Keyword(s):  
Rna Interference ◽  
Gut Microbiota ◽  
Insect Pests ◽  
Leaf Beetle ◽  
Gut Bacteria ◽  
Biotic And Abiotic Stress ◽  
Epithelial Surface ◽  
Pass Through ◽  
Insect Gut ◽  
Insect Gut Bacteria

AbstractRNA interference (RNAi) has emerged as an efficient tool to control insect pests. When lethal double-stranded RNAs (dsRNAs) were ingested by the insects, strong gene silencing and mortality can be induced. To exert their function, dsRNA molecules must pass through insect’s gut and enter epithelial cells and/or the hemolymph. Gut bacteria are known to inhabit on the epithelial surface to confer host new capabilities to counter both biotic and abiotic stress. Whether there is a crosstalk between gut bacteria and dsRNAs and the effects of the microbiome on RNAi efficiency remains unknown. Here, using a leaf beetle-gut microbiota system, we investigated whether and how gut bacteria interact with dsRNA molecules and its effects on host insects. We firstly showed that the leaf beetle Plagiodera versicolora (Coleoptera) is highly susceptible to RNAi. Then, we found that ingestion of dsRNAs by non-axenic P. versicolora larvae results in (i) significantly accelerated mortality compared to axenic larvae, and (ii) over-growth and dysbiosis of the gut microbiota. The latter is mainly caused by the bacterial utilization of the dsRNA degraded products initiated by the host insect. Furthermore, we found that Pseudomonas putida, a gut bacterium of P. versicolora, was a main commensal-to-pathogen strain that accelerated the death of P. versicolora larvae. Taken together, our findings reveal a synergistic role of gut microbiota to dsRNA-induced mortality of pest insects, which provides new insights in the ecological functions of insect gut bacteria, and also contributes to a better understanding of the RNAi mechanisms in insects.

Insect Gut Bacteria: A Novel Source for Siderophore Production

2016 ◽  
Vol 88 (2) ◽  
pp. 567-572 ◽  
Author(s):  
M. S. Sonawane ◽  
R. D. Chaudhary ◽  
Y. S. Shouche ◽  
R. Z. Sayyed
Keyword(s):  
Gut Bacteria ◽  
Siderophore Production ◽  
Insect Gut ◽  
Insect Gut Bacteria

scholarly journals Strict Host-Symbiont Cospeciation and Reductive Genome Evolution in Insect Gut Bacteria

PLoS Biology ◽  
2006 ◽  
Vol 4 (10) ◽  
pp. e337 ◽  
Author(s):  
Takahiro Hosokawa ◽  
Yoshitomo Kikuchi ◽  
Naruo Nikoh ◽  
Masakazu Shimada ◽  
Takema Fukatsu
Keyword(s):  
Genome Evolution ◽  
Gut Bacteria ◽  
Insect Gut ◽  
Insect Gut Bacteria

A novel Dps-type protein from insect gut bacteria catalyses hydrolysis and synthesis of N-acyl amino acids

2007 ◽  
Vol 9 (6) ◽  
pp. 1572-1583 ◽  
Author(s):  
Liyan Ping ◽  
Rita Büchler ◽  
Axel Mithöfer ◽  
Aleš Svatoš ◽  
Dieter Spiteller ◽  
...  
Keyword(s):  
Amino Acids ◽  
Gut Bacteria ◽  
Type Protein ◽  
Insect Gut ◽  
Insect Gut Bacteria
Sign in / Sign up

Export Citation Format

Share Document