Linked Life Data

19935894

Source:http://linkedlifedata.com/resource/pubmed/id/19935894

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2009-11-25
pubmed:abstractText
Competition assays with Sinorhizobium meliloti 1021 and its GFP-labelled pSymA cured and deleted derivatives, SmA818 and SmA146, demonstrated that Sm1021 could still inhibit rice seedling growth even when outnumbered by a large excess of the noninhibitory cured or deleted strain. The wild-type strain Sm1021 also inhibited the growth of its noninhibitory pSymA-cured strain SmA818(gfp) and its pSymA-deleted strain SmA146(gfp) in a manner suggesting that Sm1021 produced a bacteriocin-like substance. The production of, and resistance to, this substance seemed to be pSymA-associated, but it was not the cause of killing in competition experiments on rice, suggesting that the killing of SmA818(gfp) and SmA146(gfp) was medium dependent. The addition of agar in liquid F10 medium at concentrations < or = 0.4% (m/v) abolished the rice growth inhibition of strain Sm1021 and Sm1021(gfp). The increased medium viscosity at higher agar concentrations decreased the diffusion of gases and small molecules through the media. Thus, the low agar concentrations may mimic waterlogged soil conditions leading to the production of inhibitory compounds by the bacterial strains under microaerobic conditions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1480-3275
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1217-23
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Strain competition and agar affect the interaction of rhizobia with rice.
pubmed:affiliation
ARC Centre of Excellence for Integrative Legume Research, Genomics Interaction Group, Research School of Biological Sciences, GPO Box 475, Canberra, ACT 2601, Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't