期刊
CANADIAN JOURNAL OF MICROBIOLOGY
卷 56, 期 4, 页码 342-347出版社
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.1139/W10-011
关键词
lipopolysaccharide; LPS; Herbaspirillum; diazotrophic bacteria
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fundacao Araucaria
- PRONEX Carboidratos
Bacteria from the genus Herbaspirillum are endophytes responsible for nitrogen fixation in grainineous plants of economic importance such as maize, sugarcane, sorghum, rice, and wheat. Some species are known to produce plant growth substances. In contrast, Herbaspirillum rubrisubalbicans strains are known to be mild plant pathogens. The molecular communication between the plant and the microbes might involve lipopolysaccharides present in the outer membrane of these gram-negative bacteria. Phenol water extraction was used to obtain lipopolysaccharides from 7 strains of Herbaspirillum seropedicae (SmR1, Z67, Z78, ZA95, and M2) and H. rubrisubalbicans (M1 and M4). The electrophoretic profiles and chemical composition of the lipopolysaccharides obtained in the phenol and aqueous extracts were shown herein.
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