scholarly journals Sister Dehalobacter Genomes Reveal Specialization in Organohalide Respiration and Recent Strain Differentiation Likely Driven by Chlorinated Substrates

2016 ◽  
Vol 7 ◽  
Author(s):  
Shuiquan Tang ◽  
Po Hsiang Wang ◽  
Steven A. Higgins ◽  
Frank E. Löffler ◽  
Elizabeth A. Edwards
Keyword(s):  
Strain Differentiation ◽  
Organohalide Respiration

scholarly journals Substrate-dependent competition and cooperation relationships between Geobacter and Dehalococcoides for their organohalide respiration

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Yongyi Liang ◽  
Qihong Lu ◽  
Zhiwei Liang ◽  
Xiaokun Liu ◽  
Wenwen Fang ◽  
...  
Keyword(s):  
Electron Donors ◽  
Community Stability ◽  
Organohalide Respiration ◽  
Competition And Cooperation ◽  
Free Competition ◽  
Isolation And Characterization ◽  
Geochemical Cycling ◽  
New Strategy ◽  
Insight Into

AbstractObligate and non-obligate organohalide-respiring bacteria (OHRB) play central roles in the geochemical cycling and environmental bioremediation of organohalides. Their coexistence and interactions may provide functional redundancy and community stability to assure organohalide respiration efficiency but, at the same time, complicate isolation and characterization of specific OHRB. Here, we employed a growth rate/yield tradeoff strategy to enrich and isolate a rare non-obligate tetrachloroethene (PCE)-respiring Geobacter from a Dehalococcoides-predominant microcosm, providing experimental evidence for the rate/yield tradeoff theory in population selection. Surprisingly, further physiological and genomic characterizations, together with co-culture experiments, revealed three unique interactions (i.e., free competition, conditional competition and syntrophic cooperation) between Geobacter and Dehalococcoides for their respiration of PCE and polychlorinated biphenyls (PCBs), depending on both the feeding electron donors (acetate/H2 vs. propionate) and electron acceptors (PCE vs. PCBs). This study provides the first insight into substrate-dependent interactions between obligate and non-obligate OHRB, as well as a new strategy to isolate fastidious microorganisms, for better understanding of the geochemical cycling and bioremediation of organohalides.

scholarly journals Strain differentiation ofCandida albicansby morphotyping

1987 ◽  
Vol 99 (2) ◽  
pp. 421-428 ◽  
Author(s):  
S. Phongpaichit ◽  
D. W. R. Mackenzie ◽  
C. Fraser
Keyword(s):  
Candida Albicans ◽  
Surface Topography ◽  
Epidemiological Studies ◽  
Morphological Features ◽  
Malt Agar ◽  
Strain Differentiation ◽  
Specialized Equipment

SUMMARYStrains ofCandida albicanscan be differentiated by the morphological features of streak colonies developed on malt agar. A morphotyping system is proposed, where numerical codes are assigned primarily on the basis of the nature and extent of marginal fringing and the surface topography of the streak colony. The system allows ready differentiation to be made of morphotypcs, requires no specialized equipment or expertise and provides a simple and reproducible means for epidemiological studies of candida and candidosis.

Cytomegalovirus Strain Differentiation by DNA Restriction Analysis

Oncology ◽  
1979 ◽  
Vol 36 (6) ◽  
pp. 245-247 ◽  
Author(s):  
H.W. Doerr ◽  
A. Künzler ◽  
H. Schmitz
Keyword(s):  
Restriction Analysis ◽  
Strain Differentiation ◽  
Dna Restriction

scholarly journals Genomic determinants of organohalide-respiration in Geobacter lovleyi, an unusual member of the Geobacteraceae

BMC Genomics ◽  
2012 ◽  
Vol 13 (1) ◽  
pp. 200 ◽  
Author(s):  
Darlene D Wagner ◽  
Laura A Hug ◽  
Janet K Hatt ◽  
Melissa R Spitzmiller ◽  
Elizabeth Padilla-Crespo ◽  
...  
Keyword(s):  
Organohalide Respiration

Progress on strain differentiation of Citrus tristeza virus and its application to the epidemiology of citrus tristeza disease

2000 ◽  
Vol 71 (1-2) ◽  
pp. 97-106 ◽  
Author(s):  
C.L. Niblett ◽  
H. Genc ◽  
B. Cevik ◽  
S. Halbert ◽  
L. Brown ◽  
...  
Keyword(s):  
Citrus Tristeza Virus ◽  
Strain Differentiation ◽  
Tristeza Virus ◽  
Citrus Tristeza
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