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Applied and Environmental Microbiology, November 2003, p. 6954-6958, Vol. 69, No. 11
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.11.6954-6958.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Phenylacetic and Phenylpropionic Acids Do Not Affect Xylan Degradation by Ruminococcus albus

Carine Reveneau,1 Sarah E. Adams,1 M. A. Cotta,1,2 and M. Morrison1*

The MAPLE Research Program, Department of Animal Sciences, The Ohio State University, Columbus, Ohio 43210,1 Fermentation Biochemistry Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, Peoria, Illinois 616042

Received 20 June 2003/ Accepted 9 July 2003

Since the addition of either ruminal fluid or a combination of phenylacetic and phenylpropionic acids (PAA/PPA) has previously been shown to dramatically improve cellulose degradation and growth of Ruminococcus albus, it was of interest to determine the effects of these additives on xylan-grown cultures. Although cell-bound xylanase activity increased when either PAA/PPA or ruminal fluid was added to the growth medium, total xylanase did not change, and neither of these supplements affected the growth or xylan-degrading capacity of R. albus 8. Similarly, neither PAA/PPA nor ruminal fluid affected xylan degradation by multiple strains of R. albus when xylan prepared from oat spelts was used as a carbohydrate source. These results show that the xylanolytic potential of R. albus is not conditional on the availability of PAA/PPA or other components of ruminal fluid.

* Corresponding author. Mailing address: The MAPLE Research Program, Department of Animal Sciences, The Ohio State University, Columbus, OH 43210. Phone: (614) 688-5399. Fax: (614) 292-7116. E-mail: morrison.234{at}osu.edu.

Applied and Environmental Microbiology, November 2003, p. 6954-6958, Vol. 69, No. 11
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.11.6954-6958.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Oelker, E. R., Reveneau, C., Firkins, J. L. (2009). Interaction of molasses and monensin in alfalfa hay- or corn silage-based diets on rumen fermentation, total tract digestibility, and milk production by Holstein cows. J DAIRY SCI 92: 270-285 [Abstract] [Full Text]  
  • Rakotoarivonina, H., Larson, M. A., Morrison, M., Girardeau, J.-P., Gaillard-Martinie, B., Forano, E., Mosoni, P. (2005). The Ruminococcus albus pilA1-pilA2 locus: expression and putative role of two adjacent pil genes in pilus formation and bacterial adhesion to cellulose. Microbiology 151: 1291-1299 [Abstract] [Full Text]  


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