Draft Genome Sequence of Lactobacillus crispatus JCM5810, Which Can Reduce Campylobacter jejuni Colonization in Chicken Intestine

Abstract

We present the 2.05-Mb draft genome sequence of Lactobacillus crispatus JCM5810, a chicken intestinal isolate with the ability to reduce Campylobacter jejuni colonization in chickens. The genome sequence will provide insights on the probiotic mechanisms of L. crispatus JCM5810.

GENOME ANNOUNCEMENT

Lactobacilli comprise the largest genus of lactic acid bacteria (LAB) and are of interest because some possess probiotic characteristics (1). Lactobacillus crispatus JCM5810, originally isolated from chicken feces, has gained increased interest because of its potential probiotic properties in vitro and in vivo. In particular, the ability of L. crispatus JCM5810 to reduce Campylobacter jejuni colonization in chicken intestine is of great interest (2). C. jejuni is a Gram-negative, spiral-shaped bacterium which is the most common bacterial cause of food-borne illness and diarrheal disease in the United States (3). Consumption of contaminated chicken is one of the most common ways humans contract diseases caused by C. jejuni (World Health Organization; http://www.who.int/mediacentre/factsheets/fs255/en). In a study conducted by Neal-McKinney et al. (2), experiments were conducted to evaluate the ability of four Lactobacillus strains to reduce colonization of C. jejuni in commercial broiler chickens. Of the four strains, L. crispatus JCM5810 was the most effective in reducing the number of chickens colonized with C. jejuni. In addition, they provided evidence that the production of lactic acid by L. crispatus JCM5810 was responsible for this activity. More recently, in vitro trials demonstrated that L. crispatus JCM5810 was able to coaggregate with C. jejuni NCTC 11168 (4), suggesting another potential mechanism for how L. crispatus JCM5810 reduces C. jejuni colonization in chickens.

To better understand the probiotic potential and its genetic traits, the whole genome of L. crispatus JCM5810 has been sequenced. Here, we report the draft genome sequence of L. crispatus JCM5810, consisting of 7 scaffolds for a total of 2.05 Mb with a GC content of 36.5%. All sequencing was conducted at the Roy J. Carver Biotechnology Center at the University of Illinois at Urbana-Champaign. Whole-genome sequencing was done using the Illumina MiSeq platform, generating a mate-pair library containing 5,226,355 reads with an average length of 300 bp. Data processing, including adapter trimming, quality control, and de novo assembly, was performed using CLC Genomics Workbench version 8.5.1 (CLC bio; https://www.qiagenbioinformatics.com/products/clc-genomics-workbench). The sequencing reads were assembled into 12 contigs with an average length of 170,057. These 12 contigs were further constructed into 7 scaffolds by Sanger sequencing. The final orientation and ordering was assisted using L. crispatus ST1 (NC_014106.1) as a reference.

Nucleotide sequence accession numbers.

This whole-genome shotgun project has been deposited at DDBJ/ENA/GenBank under the accession number LSVK00000000. The version described in this paper is the first version, LSVK00000000.1.

Funding Statement

This work was supported by funds awarded to Michael E. Konkel (Washington State University) and Michael J. Miller (University of Illinois, Urbana-Champaign) from the U.S. Department of Agriculture, National Institute of Food and Agriculture (award number 2011-67015-30772) (www.nifa.usda.gov).