Lactobacillus plantarum and its biological implications

Introduction

Electron micrograph of L. plantarum

By Katie Adlam

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Introduce the topic of your paper. What microorganisms are of interest? Habitat? Applications for medicine and/or environment?

Section 1

Genome-atlas view of the L. plantarum WCFS1 chromosome, with the predicted origin of replication at the top. The outer to inner circles show (i) positive strand ORFs (red); (ii) negative strand ORFs (blue); (iii) GC-skew (green); (iv) G+C content (black); (v) prophage-related functions (green) and IS-like elements (purple); and (vi) rDNA operons (black) and tRNA encoding genes (red). Kleerebezem 2003.

Include some current research, with at least one figure showing data.

Section 2

Lactate and acetate production pathways in Lactobacillus plantarum. EMP, Embden–Meyerhof Parnas pathway; LDH, lactate dehydrogenase; POX, pyruvate oxidase; PDH, pyruvate dehydrogenase; PFL, pyruvate formate lyase; PTA, phosphotransacetylase; AK, acetate kinase. Quatravaux 2006.

Include some current research, with at least one figure showing data.

Section 3

Schematic representation of the human gastrointestinal tract (GI tract) indicating its different regions where recombinant lactic acid bacteria (rLAB) encounter various challenges. Daniel 2011.

a) Effect of 16 and 62 cCFS on the growth of Rhodotorula mucilaginosa in orange juice. Control juice (), juice containing cCFS from Lactobacillus plantarum 16 (), juice containing cCFS from Lact. plantarum 62 (). P < 0·001 (***). (b) Effect of 16 and 62 cCFS on the growth of R. mucilaginosa in yoghurt. Control yoghurt (), yoghurt containing cCFS from Lact. plantarum 16 (), yoghurt containing cCFS from Lact. plantarum 62 (). P < 0·001 (***). Crowley 2012.

Hematoxylin-eosin stained gastric sections (×20). A: Control group showed normal gastric histopathology; B: Helicobacter pylori infected group showed infiltration of inflammatory cells (arrows); C and D: Lactobacillus plantarum (L. plantarum) B7 106 CFUs/mL treated and L. plantarum B7 1010 CFUs/mL treated groups showed improvements in gastric inflammation. GE: Gastric epithelium; LP: Lamina propria; MM: Muscularis mucosae; SM: Submucosa; ML: Muscularis.Sunanliganon 2012.

Include some current research, with at least one figure showing data.

Antibody response to oral administration of recombinant L. plantarum: mucosal IgA. del Rio 2010

Conclusion

Overall text length at least 3,000 words, with at least 3 figures.

References

Kleerebezem, M.; Boekhorst, J.; van Kranenburg, R.; Molenaar, D.; Kuipers, O. P.; Leer, R.; Tarchini, R.; Peters, S.A.; Sandbrink, H.M.; Fiers, M.W.E.J.; Stiekema, W.; Lankhorst, R.M.K.; Bron, P.A.; Hoffer, S.M.; Groot, M.N.N.; Kerkhoven, R.; de Vries, M.; Ursing, B.; de Vos, W.M.; Siezen, R.J. Complete genome sequence of Lactobacillus plantarum WCFS1. PNAS 2003, 100, 1990-1995.

Quatravaux, S.; Remize, F.; Bryckaert, E.; Colavizza, D.; Guzzo, J. Examination of Lactobacillus plantarum lactate metabolism side effects in relation to the modulation of aeration parameters. J Appl. Microbiol. 2006, 101, 903-912.

Daniel, C.; Roussel, Y.; Kleerebezem, M.; Pot, B. Recombinant lactic acid bacteria as mucosal biotherapeutic agents. Trends Biotechnol. 2011, 29, 499- 508.

Crowley, S.; Mahony, J.; van Sinderen, D. Comparative analysis of two antifungal Lactobacillus plantarum isolates and their application as bioprotectants in refrigerated foods. J. Appl. Microbiol. 2012, 113, 1417-1427.

Sunanliganon, C.; Thong-Ngam, D.; Tumwasorn, S.; Klaikeaw, N. Lactobacillus plantarum B7 inhibits Helicobacter pylori growth and attenuates gastric inflammation. World J Gastroenterol. 2012, 18, 2472-2480.

Rio, B.; Seegers, J.F.M.L.; Gomes-Solecki, M. Immune response of Lactobacillus plantarum expressing Borrelia burgdorferi OspA is modulated by the lipid modification of the antigen. PLoS ONE 2010, 5, e11199.

Edited by student of Joan Slonczewski for BIOL 238 Microbiology, 2011, Kenyon College.