SOME EFFECTS OF ULTRAVIOLET RADIATION ON SPORULATING CULTURES OF
            <i>BACILLUS CEREUS</i>

Romig, W. R.; Wyss, Orville

doi:10.1128/jb.74.3.386-391.1957

Cited by 28 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An approximate survival average for all the vegetative bacteria listed in the table was 37 Jm )2 for a 1 Log 10 kill and 101 Jm )2 for a 4 Log 10 kill. Additional studies of relevance here (some of which are cited in Table 1) have been reported (52)(53)(54)(55)(56)(57)(58)(59). The data in Table 1 should be useful in selecting surrogate bacteria for pathogens for which there is no available date (e.g.…”

Section: Discussionmentioning

confidence: 99%

Overview of the Inactivation by 254 nm Ultraviolet Radiation of Bacteria with Particular Relevance to Biodefense

Coohill

Sagripanti

2008

Photochem & Photobiology

141

126

View full text Add to dashboard Cite

Our goal was to ultimately predict the sensitivity of untested bacteria (including those of biodefense interest) to ultraviolet (UV) radiation. In this study, we present an overview and analysis of the relevant 254 nm data previously reported and available in the literature. The amount of variability in this data prevented us from determining an ''average'' response for any bacterium. Therefore, we developed particular selection criteria to include the data in our analysis and suggested future guidelines for reporting UV sensitivity results. We then compiled a table of the sensitivity to 254 nm UV for 38 bacteria and three bacterial spores. The UV sensitivity was quite similar (within 10%) among the spores of Bacillus anthracis (strains Vollum 1B and Sterne), Bacillus subtilis, and Bacillus megaterium. These data indicate that spores of B. subtilis and B. megaterium could be adequate simulants of B. anthracis spores in UVC experiments. Spores of B. anthracis, B. subtilis and B. megaterium were 5-10 times more resistant to UV than were their corresponding vegetative cells. The vegetative cells of B. anthracis showed similar UV sensitivity to those of Burkholderia pseudomallei, Shigella sonnei, and a wild-type strain of Escherichia coli. Yersinia enterocolitica and Vibrio cholerae appeared more sensitive to UV and Salmonella typhi slightly more resistant to UV than E. coli. The sensitivity (at 254 nm) of all vegetative bacteria ranged from 11 to 80 Jm 2 for a 1 Log 10 kill and from 25-200 Jm 2 for 4 Log 10 kill.

show abstract

Section: Discussionmentioning

confidence: 99%

Overview of the Inactivation by 254 nm Ultraviolet Radiation of Bacteria with Particular Relevance to Biodefense

Coohill

Sagripanti

2008

Photochem & Photobiology

141

126

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

“…The bacterial endospore typically exhibits greater ultraviolet light (UV) resistance than does the vegetative form of the same species (11,14). Resistance to UV inactivation appears about midway in the sequence of sporulation events (11,15). Studies to date, however, have relied on the determination of the survivors of a single UV dose which was sufficient to inactivate vegetative forms but not spores (11,15).…”

mentioning

confidence: 99%

“…Resistance to UV inactivation appears about midway in the sequence of sporulation events (11,15). Studies to date, however, have relied on the determination of the survivors of a single UV dose which was sufficient to inactivate vegetative forms but not spores (11,15). Although this approach clearly gives the time of appearance and increase in the population of forms resistant to the particular UV dose used, jt does not allow one to observe whether changes occur in the UV inactivation pattems of sporulating bacteria.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Development of Ultraviolet Resistance in Sporulating Bacillus cereus T

1973

View full text Add to dashboard Cite

Ultraviolet (UV) resistance patterns of sporulating Bacillus cereus were determined. Six different categories of UV resistance were discernible as the organism progressed from exponential growth to the free, mature spore. Light microscope observations allowed the assignment of certain sporulation stages to specific UV resistance categories. Marked changes in UV resistance were associated with stages III, mid-IV, and post-IV of sporulation. Dipicolinic acid was shown to sensitize forespores to UV radiation. Mechanisms invoked to explain the different UV categories are discussed.

show abstract

“…Dipicolinic acid (DPA) and its chelates absorb strongly in the most lethal portion of the UV spectrum (6,10,12,13,20) and, consequently, have been associated with the resistance of spores to UV irradiation (1,6,20). We studied the effect of dipicolinate on UV inactivation through UV action spectra determined for spores with different levels of DPA and for DPA-less spores irradiated through calcium dipicolinate (CaDPA) filters.…”

mentioning

confidence: 99%

Photoprotection by Dipicolinate Against Inactivation of Bacterial Spores with Ultraviolet Light

1973

View full text Add to dashboard Cite

show abstract

SOME EFFECTS OF ULTRAVIOLET RADIATION ON SPORULATING CULTURES OF BACILLUS CEREUS

Cited by 28 publications

References 19 publications

Overview of the Inactivation by 254 nm Ultraviolet Radiation of Bacteria with Particular Relevance to Biodefense

Overview of the Inactivation by 254 nm Ultraviolet Radiation of Bacteria with Particular Relevance to Biodefense

Development of Ultraviolet Resistance in Sporulating Bacillus cereus T

Photoprotection by Dipicolinate Against Inactivation of Bacterial Spores with Ultraviolet Light

Contact Info

Product

Resources

About