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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Factors affecting the inhibitory activity of 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one (DIMBOA) against Erwinia carotovora, a nonpathogen of Zea mays L., and against a maize pathovar of Erwinia chrysanthemi (ECZ) were examined. Most experiments were performed with DIMBOA dissolved in a bacterial growth medium containing 10 g/liter of sucrose, inorganic salts, and 1 g/liter of casamino acids at pH 6.75. When temperature and pH were held constant, inhibition of E. carotovora varied linearly with the logarithm of the initial cell population. By altering temperatures, assays with constant pH and initial cell populations were performed under conditions of varying DIMBOA stability. When E. carotovora was grown at 24, 28, 32, and 36 C in the presence of 0.1 to 0.5 mm DIMBOA, the inhibition of bacterial growth was maintained long after DIMBOA had decomposed in the medium to levels which, if added initially, would not have been inhibitory. When assays were performed at pH 5.5, the pH of aqueous maize extracts, E. carotovora was more inhibited than at pH 6.75; however, ECZ was substantially less inhibited at the lower pH.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
May
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
61
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
803-5
pubmed:dateRevised
2010-9-15
pubmed:year
1978
pubmed:articleTitle
Factors That Influence the Activity of 2,4-Dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one on Erwinia Species in Growth Assays.
pubmed:affiliation
Department of Plant Pathology, University of Wisconsin, Madison, Wisconsin 53706.
pubmed:publicationType
Journal Article