Substrate selection as a possible strategy for amelioration of acid pH by Rhizobium leguminosarum biovar viciae

Citation
Sm. Castro et al., Substrate selection as a possible strategy for amelioration of acid pH by Rhizobium leguminosarum biovar viciae, SOIL BIOL B, 32(7), 2000, pp. 1039-1041
Citations number
14
Categorie Soggetti
Environment/Ecology
Journal title
SOIL BIOLOGY & BIOCHEMISTRY
ISSN journal
00380717 → ACNP
Volume
32
Issue
7
Year of publication
2000
Pages
1039 - 1041
Database
ISI
SICI code
0038-0717(200007)32:7<1039:SSAAPS>2.0.ZU;2-B
Abstract
A possible mechanism for bacteria to ameliorate an unfavorably acidic exter nal pH would be to select for catabolism of those substrates in a mixture t hat would alkalinize the medium. This hypothesis was tested with cultures o f Rhizobium leguminosarum biovar viciae WSM710 grown at pH 7.0 or 5.5 on bi nary mixtures of glucose plus fumarate or glucose plus histidine. The resul ts showed no significant increase in the absolute or relative utilization o f the alkalinizing substrates (fumarate or histidine) at pH 5.5. (C) 2000 E lsevier Science Ltd. All rights reserved.