Diversity and mechanisms of alkali tolerance in lactobacilli.

Diversity and mechanisms of alkali tolerance in lactobacilli. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Diversity and mechanisms of alkali tolerance in lactobacilli. Abstract Text:

Yuki Sawatari,Atsushi Yokota,

We determined the maximum pH that allows growth (pHmax) for 34 strains of lactobacilli. High alkali tolerance was exhibited by strains of Lactobacillus casei, L. paracasei subsp. tolerans, L. paracasei subsp. paracasei, L. curvatus, L. pentosus, and L. plantarum that originated from plant material, with pHmax values between 8.5 and 8.9. Among these, L. casei NRIC 1917 and L. paracasei subsp. tolerans NRIC 1940 showed the highest pHmax, at 8.9. Digestive tract isolates of L. gasseri, L. johnsonii, L. reuteri, L. salivarius subsp. salicinius, and L. salivarius subsp. salivarius exhibited moderate alkali tolerance, with pHmax values between 8.1 and 8.5. Dairy isolates of L. delbrueckii subsp. bulgaricus, L. delbrueckii subsp. lactis, and L. helveticus exhibited no alkali tolerance, with pHmax values between 6.7 and 7.1. Measurement of the internal pH of representative strains revealed the formation of transmembrane proton gradients (DeltapH) in a reversed direction (i.e., acidic interior) at alkaline external-pH ranges, regardless of their degrees of alkali tolerance. Thus, the reversed DeltapH did not determine alkali tolerance diversity. However, the DeltapH contributed to alkali tolerance, as the pHmax values of several strains decreased with the addition of nigericin, which dissipates DeltapH. Although neutral external-pH values resulted in the highest glycolysis activity in the presence of nigericin regardless of alkali tolerance, substantial glucose utilization was still detected in the alkali-tolerant strains, even in a pH range of between 8.0 and 8.5, at which the remaining strains lost most activity. Therefore, the alkali tolerance of glycolysis reactions contributes greatly to the determination of alkali tolerance diversity.

Diversity and mechanisms of alkali tolerance in lactobacilli. Publishing Authors By Initials

Y Sawatari,A Yokota,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Diversity and mechanisms of alkali tolerance in lactobacilli. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Applied and environmental microbiology

VOLUME: 73

Page Numbers: 3909-15

Journal Abbreviation: Appl. Environ. Microbiol.

ISSN: 0099-2240

DAY: 20

MONTH: 04

YEAR: 2007

Diversity and mechanisms of alkali tolerance in lactobacilli. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 7605801

Diversity and mechanisms of alkali tolerance in lactobacilli. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Diversity and mechanisms of alkali tolerance in lactobacilli. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Diversity and mechanisms of alkali tolerance in lactobacilli.

AFFILIATION: Laboratory of Microbial Physiology, Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo, Hokkaido 060-8589, Japan.

Country: United States

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Appl Environ Microbiol

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Diversity and mechanisms of alkali tolerance in lactobacilli Related Publications

• Access to treatment and care associated with HIV infection among members of AIDS support groups in Thailand.
• Amphibacillus sediminis sp. nov., an endospore-forming bacterium isolated from lake sediment in Japan.
• Anesthetic management of simultaneous coronary artery bypass grafting and cardiac pheochromocytoma resection under cardiopulmonary bypass.
• Cerebral endothelial damage after severe head injury.
• Continuous spectrophotometric assays for three regulatory enzymes of the arginine biosynthetic pathway.
• Diversity and mechanisms of alkali tolerance in lactobacilli.
• Effects of surgical holes in mouse tibiae on bone formation induced by knee loading.
• Efficacy of plasma exchange therapy for Kawasaki disease intractable to intravenous gamma-globulin.
• Enzymatic characterization of 5-methylthioribose 1-phosphate isomerase from Bacillus subtilis.
• Facilitation of perceptual filling-in for spatio-temporal frequency of dynamic textures.
• Forced expression of Id2 in fetal thymic T cell progenitors allows some of their progeny to adopt NK cell fate.
• Frequency-dependent enhancement of bone formation in murine tibiae and femora with knee loading.
• Halobacillus faecis sp. nov., a spore-forming bacterium isolated from a mangrove area on Ishigaki Island, Japan.
• Henoch-Schonlein purpura presenting duodenal involvement similar to superior mesenteric artery syndrome in a girl.
• Homozygous deletion scanning of the lung cancer genome at a 100-kb resolution.
• In vitro glucuronidation of estradiol-17beta by microsomes prepared using liver biopsy specimens from dairy cows.
• Influence of Small Eye Movement on Perceptual Filling-in Time.
• Knee loading accelerates bone healing in mice.
• Knee loading dynamically alters intramedullary pressure in mouse femora.
• Knee-loading modality drives molecular transport in mouse femur.
• Localization of a human lung adenocarcinoma susceptibility locus, possibly syntenic to the mouse Pas1 locus, in the vicinity of the D12S1034 locus on chromosome 12p11.2-p12.1.
• Long-term follow-up of busulfan, etoposide, and nimustine hydrochloride (ACNU) or melphalan as conditioning regimens for childhood acute leukemia and lymphoma.
• Modelling and identification of transcription-factor binding motifs in human chondrogenesis.
• Pelagicoccus croceus sp. nov., a novel marine member of the family Puniceicoccaceae within the phylum 'Verrucomicrobia' isolated from seagrass.
• Purification and characterization of alkaline phosphatase in cultured rat liver cells.
• Role of COX inhibition in pathogenesis of NSAID-induced small intestinal damage.
• Rubritalea spongiae sp. nov. and Rubritalea tangerina sp. nov., two carotenoid- and squalene-producing marine bacteria of the family Verrucomicrobiaceae within the phylum 'Verrucomicrobia', isolated from marine animals.
• Stress to endoplasmic reticulum of mouse osteoblasts induces apoptosis and transcriptional activation for bone remodeling.
• Toxic epidermal necrolysis in a child successfully treated with cyclosporin A and methylprednisolone.
• [Gene therapy of ALS with short interfering RNA]