Bacterial Community and PHB-Accumulating Bacteria Associated with the Wall and Specialized Niches of the Hindgut of the Forest Cockchafer (Melolontha hippocastani)

Alonso-Pernas, Pol; Arias-Cordero, Erika M; Novoselov, Alexey L.; Ebert, Christina; Rybak, Jürgen; Kaltenpoth, Martin; Westermann, Martin; Neugebauer, Ute; Boland, Wilhelm

doi:10.3389/fmicb.2017.00291

Cited by 22 publications

(30 citation statements)

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“…These were assigned to 72 taxa (and a further unclassified group) based on NCBI Blasting. The number of OTUs per sample varied between 69 and 119, which is within the range of OTU richness recorded from similar studies for other plant-herbivore systems (e.g., Alonso-Pernas et al, 2017;Grünwald, Pilhofer, & Höll, 2010;Montagna et al, 2015;Suen et al, 2010;Tang et al, 2010). Our PERMANOVA analyses indicated that, when all OTUs or genera were included together, the origin of the leafhopper colonies was a more significant determinant of microbiome community structure than was the host plant and its resistance genes.…”

Section: The Leafhopper Microbiomediversity and Functionsupporting

confidence: 81%

“…Five of the endosymbiont taxa in particular ( Bosea , Candidatus sulcia , Dyella , Mycobacterium , and Sandaracinus ) showed strong responses to phase I selection and consistent response patterns from phase II selection. Bacteria of the genus Bosea , which occurred at high densities in our leafhopper samples, have been linked to nitrogen metabolism (denitrification in soil) and occur in the hind wall of the cockchafer gut (Alonso‐Pernas et al, ; Dandie et al, ). Bosea have also been associated with detoxification of bendiocarb and carbofuran insecticides (Jiménez‐Arévalo, Ahuatzi‐Chacón, Galíndez‐Mayer, Juárez‐Ramírez, & Ruiz‐Ordaz, ; Shin, Kim, Seong, Song, & Ka, ).…”

Section: Discussionmentioning

confidence: 99%

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Microbiome responses during virulence adaptation by a phloem‐feeding insect to resistant near‐isogenic rice lines

Horgan

Srinivasan

Crisol‐Martínez

et al. 2019

Ecology and Evolution

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The microbiomes of phloem‐feeding insects include functional bacteria and yeasts essential for herbivore survival and development. Changes in microbiome composition are implicated in virulence adaptation by herbivores to host plant species or host populations (including crop varieties). We examined patterns in adaptation by the green leafhopper, Nephotettix virescens, to near‐isogenic rice lines (NILs) with one or two resistance genes and the recurrent parent T65, without resistance genes. Only the line with two resistance genes was effective in reducing leafhopper fitness. After 20 generations on the resistant line, selected leafhoppers attained similar survival, weight gain, and egg laying to leafhoppers that were continually reared on the susceptible recurrent parent, indicating that they had adapted to the resistant host. By sequencing the 16s rRNA gene, we described the microbiome of leafhoppers from colonies associated with five collection sites, and continually reared or switched between NILs. The microbiomes included 69–119 OTUs of which 44 occurred in ≥90% of samples. Of these, 14 OTUs were assigned to the obligate symbiont Candidatus sulcia clade. After 20 generations of selection, collection site had a greater effect than host plant on microbiome composition. Six bacteria genera, including C. sulcia, were associated with leafhopper virulence. However, there was significant within‐treatment, site‐related variability in the prevalence of these taxa such that the mechanisms underlying their association with virulence remain to be determined. Our results imply that these taxa are associated with leafhopper nutrition. Ours is the first study to describe microbiome diversity and composition in rice leafhoppers. We discuss our results in light of the multiple functions of herbivore microbiomes during virulence adaptation in insect herbivores.

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Section: The Leafhopper Microbiomediversity and Functionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Microbiome responses during virulence adaptation by a phloem‐feeding insect to resistant near‐isogenic rice lines

Horgan

Srinivasan

Crisol‐Martínez

et al. 2019

Ecology and Evolution

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“…Achromobacter mucicolens has not been previously cultivated on lignocellulosic hydrolysate, nevertheless presented high efficiency in using xylose and xylose‐rich hydrolysate (agave) for PHA production; thus, it will be interesting to continuing studying this strain. Moreover, this specific strain has not been reported as a PHAs‐producer, but other related species have been mentioned as positives for PHAs accumulation such as A. marplatensis (Alonso‐Pernas et al ).…”

Section: Resultsmentioning

confidence: 99%

Forest soil bacteria able to produce homo and copolymers of polyhydroxyalkanoates from several pure and waste carbon sources

Clifton-García

González-Reynoso

Robledo‐Ortíz

et al. 2020

Lett Appl Microbiol

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Two bacterial strains able to produce polyhydroxyalkanoates (PHAs) from a wide variety of pure carbon sources (dextrose, xylose, sucrose, lactose and glycerol) were isolated from forest soils and identified as Achromobacter mucicolens and Stenotrophomonas rhizophila. Achromobacter mucicolens also produced poly(3‐hydroxybutyrate) (PHB) from different wastes (cheese whey, molasses, agave bagasse hydrolysate, nejayote and mango waste pulp). Stenotrophomonas rhizophila, produced the copolymer poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHB‐co‐HV) from glycerol (7·7 mol% of HV), and from sucrose with addition of propionic or valeric acid (4·5 and 25 mol% of HV, respectively). The copolymers presented a lower melting point (145, 156 and 127°C) and crystallinity (23, 26 and 16%) than PHB. The maximum biopolymer accumulation (PHB) for each strain growing in pure carbon source was as follows: 31·3 g per 100 g dry cell weight (DCW) for A. mucicolens from xylose; and 13·7 g per 100 g DCW for S. rhizophila from sucrose. Regarding the waste carbon sources, the highest PHB accumulation was obtained from agave bagasse hydrolysate (20·4 g per 100 g DCW) by A. mucicolens. The molecular weights of the biopolymers obtained ranged from 200 to 741 kDa. Significance and Impact of the Study The economic cost of the carbon source for the culture of polyhydroxyalkanoates (PHAs)‐producing microorganisms is one of the main process limitations. Therefore, it is vital to find versatile microorganisms able to grow and to accumulate homo and copolymers of PHAs from low‐cost substrates. In this research, we report two bacterial strains that produce poly(3‐hydroxybutyrate), poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) or both from at least five pure and five waste carbon sources. These results, by such bacterial strains have not been reported, especially the production of copolymer from glycerol without addition of precursors by Stenotrophomonas rhizophila and the production of PHB from xylose and agave bagasse hydrolysate by Achromobacter mucicolens.

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“…The bacterial 16S rRNA gene sequences determined in this study have been deposited to GenBank (NCBI). A draft genome of strain PJC48 is available in NCBI (GenBank) under accession number MSBQ00000000 .…”

Section: Methodsmentioning

confidence: 99%

Efficient production and characterization of homopolymeric poly(3‐hydroxyvalerate) produced by Bacillus strain PJC48

Zhou

Tong

et al. 2018

Biotech and App Biochem

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Aliphatic polyester, poly(3-hydroxyvalerate) (PHV), is commonly produced as a granular component in bacterial cells of various species. Based on 16S rDNA gene sequence analysis, strain PJC48 was identified as a Bacillus species. The current study is aimed to screen for a high-yield strain that can produce PHV efficiently and to increase PHV product yield by optimizing the fermentative process. We identified a high-producer strain based on Nile red staining. Characterization of the PHV produced by PJC48 by nuclear magnetic resonance spectroscopy revealed that it consisted of (R)-3-hydroxyvalerate monomers. The suggested model was validated by response surface methodology. Optimization of the PHV yield resulted in an increase of 32.75% compared to control, with a maximum production of 1.64 g/L after 48 H.

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Bacterial Community and PHB-Accumulating Bacteria Associated with the Wall and Specialized Niches of the Hindgut of the Forest Cockchafer (Melolontha hippocastani)

Cited by 22 publications

References 50 publications

Microbiome responses during virulence adaptation by a phloem‐feeding insect to resistant near‐isogenic rice lines

Microbiome responses during virulence adaptation by a phloem‐feeding insect to resistant near‐isogenic rice lines

Forest soil bacteria able to produce homo and copolymers of polyhydroxyalkanoates from several pure and waste carbon sources

Efficient production and characterization of homopolymeric poly(3‐hydroxyvalerate) produced by Bacillus strain PJC48

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